cape canaveral Archives

October 1, 2014December 23, 2015 by Ken Kremer

ULA Delta IV Heavy Rocket Rolled to Cape Launch Pad and Raised for Orion’s First Flight

The United Launch Alliance Delta-IV Heavy rocket tasked with launching NASA’s Orion EFT-1 mission being hoisted vertical atop Space Launch Complex-37B at Cape Canaveral Air Force Station in Florida on the morning of Oct. 1, 2014. Photo Credit: Alan Walters / AmericaSpace

The march towards first launch of NASA’s next generation Orion crew vehicle is accelerating rapidly.

The world’s most powerful rocket – the United Launch Alliance Delta IV Heavy – was moved to its Cape Canaveral launch pad overnight and raised at the pad today, Oct. 1, thereby setting in motion the final steps to prepare for blastoff of NASA’s new Orion capsule on its first test flight in just over two months.

All the pieces are ready and now it’s just a matter of attaching all those components together for the inaugural uncrewed liftoff of the state-of-the-art Orion spacecraft on its maiden mission dubbed Exploration Flight Test-1 (EFT-1) in December.

“We’ve been working toward this launch for months, and we’re in the final stretch,” said Kennedy Director Bob Cabana, in a NASA statement.

“Orion is almost complete and the rocket that will send it into space is on the launch pad. We’re 64 days away from taking the next step in deep space exploration.”

The triple barreled Delta IV Heavy topped by the Orion EFT-1 capsule is slated to blastoff on December 4, 2014, from Space Launch Complex 37 (SLC-37) at Cape Canaveral Air Force Station in Florida.

United Launch Alliance Delta-IV Heavy rocket launching NASA’s Orion’s EFT-1 in Dec. 2014 being hoisted vertical at SLC-37B on the morning of Oct. 1, 2014. Photo Credit: Alan Walters / AmericaSpace — United Launch Alliance Delta IV Heavy rocket launching NASA’s Orion’s EFT-1 in Dec. 2014 being hoisted vertical at SLC-37B on the morning of Oct. 1, 2014. Photo Credit: Alan Walters / AmericaSpace

After a nearly two day delay due to drenching rain storms, the Delta IV Heavy integrated first and second stages were transported horizontally overnight Wednesday starting around 10 p.m. from the processing hanger inside ULA’s Horizontal Integration Facility (HIF) to the nearby launch complex and servicing gantry at Pad 37.

Early this morning, the rocket was hoisted up into its launch configuration. Several of my space photo-journalist colleagues were on hand. See their photos herein.

From now until launch technicians will conduct the final processing, testing and checkout of the Delta IV Heavy booster. They will also carry out “a high fidelity rehearsal to include fully powering up the booster and loading the tanks with fuel and oxidizer,” according to ULA.

“This is a tremendous milestone and gets us one step closer to our launch later this year,” said Tony Taliancich, ULA’s director of East Coast Launch Operations, in a ULA statement.

“The team has worked extremely hard to ensure this vehicle is processed with the utmost attention to detail and focus on mission success.”

“The Delta IV Heavy is the world’s most powerful launch vehicle flying today, and we are excited to be supporting our customer for this critical flight test to collect data and reduce overall mission risks and costs for the program,” said Taliancich.

ULA Delta IV Heavy rocket launching NASA’s Orion’s EFT-1 in Dec. 2014 being hoisted vertical at SLC-37B on the morning of Oct. 1, 2014. Credit: Jeff Seibert/Wired4Space

NASA’s Orion Program manager Mark Geyer told me in a recent interview that the Orion spacecraft, built by prime contractor Lockheed Martin, will be transported to the pad around November 10 or 11. Then the Orion will be hoisted and attached to the top of the Delta IV Heavy rocket at the base of its service module.

The Delta IV Heavy first stage is comprised of a trio of three Common Booster Cores (CBCs).

These three RS-68 engines will power each of the attached Delta IV Heavy Common Booster Cores (CBCs) that will launch NASA’s maiden Orion on the EFT-1 mission in December 2014. Credit: Ken Kremer/kenkremer.com

Each CBC measures 134 feet in length and 17 feet in diameter. They are equipped with an RS-68 engine powered by liquid hydrogen and liquid oxygen propellants producing 656,000 pounds of thrust. Together they generate 1.96 million pounds of thrust.

The Delta IV Heavy became the world’s most powerful rocket upon the retirement of NASA’s Space Shuttle program and is the only vehicle that is sufficiently powerful to launch the Orion EFT-1 spacecraft.

The first CBC booster was attached to the center booster in June. The second one was attached in early August.

Beyond the ruins of Launch Complex 34, where three astronauts died in the Apollo 1 fire, NASA looks to the future as workers raise a United Launch Alliance Delta 4 rocket on the pad at Space Launch Complex 37. This Delta vehicle will power the first test flight of NASA's Orion spacecraft, the first human spacecraft designed to travel beyond low Earth orbit since the Apollo program. Launch of Exploration Flight Test 1 (EFT-1) is targeted for the morning of December 4. Photo Credit:Matthew Travis / Zero-G News — Beyond the ruins of Launch Complex 34, where three astronauts died in the Apollo 1 fire, NASA looks to the future as workers raise a United Launch Alliance Delta 4 rocket on the pad at Space Launch Complex 37. This Delta vehicle will power the first test flight of NASA’s Orion spacecraft, the first human spacecraft designed to travel beyond low Earth orbit since the Apollo program. Launch of Exploration Flight Test 1 (EFT-1) is targeted for the morning of December 4. Photo Credit:Matthew Travis / Zero-G News

I recently visited the HIF during a media tour after the three CBCs had been joined together as well as earlier this year after the first two CBCs arrived by barge from their ULA assembly plant in Decatur, Alabama, located about 20 miles west of Huntsville. See my photos herein.

I was also on hand at KSC when the Orion crew module/service module (CM/SM) stack was rolled out on Sept. 11, 2014, on a 36 wheeled transporter from its high bay assembly facility in the Neil Armstrong Operations and Checkout Building.

It was moved about 1 mile to the KSC fueling facility named the Payload Hazardous Servicing Facility (PHFS). Read my Orion move story – here.

Fueling of Orion was completed over the weekend and it has now been moved to the Launch Abort System Facility (LASF) for the installation of its last component – the Launch Abort System (LAS).

Orion’s next stop is SLC-37.

The two-orbit, four and a half hour EFT-1 flight will lift the Orion spacecraft and its attached second stage to an orbital altitude of 3,600 miles, about 15 times higher than the International Space Station (ISS) – and farther than any human spacecraft has journeyed in 40 years.

NASA is simultaneously developing a monster heavy lift rocket known as the Space Launch System or SLS, that will eventually launch Orion on its deep space missions.

The maiden SLS/Orion launch on the Exploration Mission-1 (EM-1) unmanned test flight is now scheduled for no later than November 2018 – read my story here.

SLS will be the world’s most powerful rocket ever built and the assembly of its core stage has begun at NASA’s Michoud Assembly Facility in New Orleans. Read my story – here.

Stay tuned here for Ken’s continuing Orion, SLS, Boeing, Sierra Nevada, Orbital Sciences, SpaceX, commercial space, Curiosity, Mars rover, MAVEN, MOM and more Earth and planetary science and human spaceflight news.

Ken Kremer

Orion’s EFT-1 launch vehicle being hoisted vertical at SLC-37B this morning. Photo Credit: Alan Walters / AmericaSpace — Orion’s EFT-1 launch vehicle being hoisted vertical at SLC-37B on the morning of Oct. 1, 2014. Photo Credit: Alan Walters / AmericaSpace

NASA’s completed Orion EFT 1 crew module loaded on wheeled transporter during move to Launch Abort System Facility (LASF) on Sept. 11, 2014 at the Kennedy Space Center, FL. Credit: Ken Kremer - kenkremer.com — NASA’s completed Orion EFT 1 crew module loaded on wheeled transporter during move to the Payload Hazardous Servicing Facility (PHFS) on Sept. 11, 2014, at the Kennedy Space Center, FL. Credit: Ken Kremer – kenkremer.com

Delta 4 Heavy rocket and super secret US spy satellite roar off Pad 37 on June 29, 2012 from Cape Canaveral, Florida. NASA’s Orion EFT-1 capsule will blastoff atop a similar Delta 4 Heavy Booster in December 2014. Credit: Ken Kremer- kenkremer.com — Delta 4 Heavy rocket and super secret US spy satellite roar off Pad 37 on June 29, 2012, from Cape Canaveral, Florida. NASA’s Orion EFT-1 capsule will blastoff atop a similar Delta 4 Heavy Booster in December 2014. Credit: Ken Kremer- kenkremer.com

September 28, 2014December 23, 2015 by Ken Kremer

Assembly Completed on Powerful Delta IV Rocket Boosting Maiden Orion Capsule Test Flight

A United Launch Alliance technician monitors the core booster elements of a Delta IV Heavy rocket after being integrated in preparation for Exploration Flight Test-1 at Space Launch Complex 37 on Cape Canaveral Air Force Station. Credit: Ken Kremer/kenkremer.com

CAPE CANAVERAL AIR FORCE STATION, FL – Assembly of the powerful Delta IV rocket boosting the pathfinder version of NASA’s Orion crew capsule on its maiden test flight in December has been completed.

Orion is NASA’s next generation human rated vehicle that will eventually carry America’s astronauts beyond Earth on voyages venturing farther into deep space than ever before – beyond the Moon to Asteroids, Mars and other destinations in our Solar System.

The state-of-the-art Orion spacecraft is scheduled to launch on its inaugural uncrewed mission, dubbed Exploration Flight Test-1 (EFT-1), in December 2014 atop the Delta IV Heavy rocket. It replaces NASA’s now retired space shuttle orbiters.

The triple barreled Delta IV Heavy is currently the most powerful rocket in America’s fleet following the retirement of the NASA’s Space Shuttle program.

Engineers from the rocket’s manufacturer – United Launch Alliance (ULA) – took a major step forward towards Orion’s first flight when they completed the integration of the three primary core elements of the rockets first stage with the single engine upper stage.

These three RS-68 engines will power each of the attached Delta IV Heavy Common Booster Cores (CBCs) the will launch NASA’s maiden Orion on the EFT-1 mission in December 2014. Credit: Ken Kremer/kenkremer.com — These three RS-68 engines will power each of the attached Delta IV Heavy Common Booster Cores (CBCs) that will launch NASA’s maiden Orion on the EFT-1 mission in December 2014. Credit: Ken Kremer/kenkremer.com

All of the rocket integration work and preflight processing took place inside ULA’s Horizontal Integration Facility (HIF), at Cape Canaveral Air Force Station in Florida.

Universe Today recently visited the Delta IV booster during an up close tour inside the HIF facility last week where the rocket was unveiled to the media in a horizontally stacked configuration. See my Delta IV photos herein.

The HIF building is located at Space Launch Complex 37 (SLC-37), on Cape Canaveral, a short distance away from the launch pad where the Orion EFT-1 mission will lift off on Dec. 4.

“The day-to-day processing is performed by ULA,” said Merri Anne Stowe of NASA’s Fleet Systems Integration Branch of the Launch Services Program (LSP), in a NASA statement.

“NASA’s role is to keep a watchful eye on everything and be there to help if any issues come up.”

The first stage is comprised of a trio of three Delta IV Common Booster Cores (CBCs).

Side view shows trio of Common Booster Cores (CBCs) with RS-68 engines powering the Delta IV Heavy rocket resting horizontally in ULA’s HIF processing facility at Cape Canaveral that will launch NASA’s maiden Orion on the EFT-1 mission in December 2014 from Launch Complex 37. Credit: Ken Kremer/kenkremer.com

This past spring I visited the HIF after the first two CBCs arrived by barge from their ULA assembly plant in Decatur, Alabama, located about 20 miles west of Huntsville.

The first CBC booster was attached to the center booster in June. The second one was attached in early August, according to ULA.

“After the three core stages went through their initial inspections and processing, the struts were attached, connecting the booster stages with the center core,” Stowe said. “All of this takes place horizontally.”

The Delta IV cryogenic second stage testing and attachment was completed in August and September. It measures 45 feet in length and 17 feet in diameter. It is equipped with a single RL10-B-2 engine, that also burns liquid hydrogen and liquid oxygen propellant and generates 25,000 pounds of thrust.

“The hardware for Exploration Flight Test-1 is coming together well,” Stowe noted in a NASA statement.

“We haven’t had to deal with any serious problems. All of the advance planning appears to be paying off.”

This same Delta IV upper stage will be used in the Block 1 version of NASA’s new heavy lift rocket, the Space Launch System (SLS).

Be sure to read my recent article detailing the ribbon cutting ceremony opening the manufacture of the SLS core stage at NASA’s Michoud Assembly Facility in New Orleans, LA. The SLS will be the most powerful rocket ever built by humans, exceeding that of the iconic Saturn V rocket that sent humans to walk on the surface of the Moon.

Wide view of the new welding tool at the Vertical Assembly Center at NASA’s Michoud Assembly Facility in New Orleans at a ribbon-cutting ceremony Sept. 12, 2014. Credit: Ken Kremer – kenkremer.com

The Delta IV rocket will be rolled out to the SLC-37 Cape Canaveral launch pad this week.
Assembly of the Orion EFT-1 capsule and stacking atop the service module was also completed in September at the Kennedy Space Center (KSC).

I was also on hand at KSC when the Orion crew module/service module (CM/SM) stack was rolled out on Sept. 11, 2014, on a 36-wheel transporter from its high bay assembly facility in the Neil Armstrong Operations and Checkout Building.

It was moved about 1 mile to its next stop on the way to SLC-37 – the KSC fueling facility named the Payload Hazardous Servicing Facility (PHFS). Read my Orion move story here.

Ken Kremer

September 23, 2014December 23, 2015 by Ken Kremer

Commercial SpaceX Dragon Cargo Capsule Arrives at Space Station

The SpaceX Dragon CRS-4 private space freighter berths at the International Space Station on Sept.23, 2014. Credit: NASA TV

After a two day chase through space, a commercial SpaceX Dragon cargo capsule completed its orbital ballet and arrived at the International Space Station (ISS) today, Sept. 23, packed with some 2.5 tons of ground breaking science experiments and supplies for the human crew.

The Dragon CRS-4 resupply freighter rendezvoused with the station early this morning following a carefully choreographed series of thruster firings that brought the vessel to within a capture distance of some 10 meters (32 feet) beneath the massive orbiting outpost.

Expedition 41 crewmember and European Space Agency astronaut Alexander Gerst then maneuvered the station’s 58-foot Canadian built robotic arm. He deftly captured the Dragon at 6:52 a.m. EDT while working at the controls of the robotics workstation in the Cupola module and as the station soared some 260 miles above the Pacific Ocean.

NASA TV live coverage of the rendezvous and grappling process began at 5:00 a.m. EDT with berthing coverage concluding about 9:30 a.m. – http://www.nasa.gov/ntv

NASA astronaut Reid Wiseman assisted Gerst in operating the Canadarm2 from inside the domed, seven windowed Cupola.

Approximately two hours later at 9 a.m. EST, the private SpaceX Dragon was berthed at the Earth-facing port on the stations Harmony module.

See the Dragon’s location on ISS graphic below.

Current ISS configuration on Sept. 23, 2014 following berthing of SpaceX Dragon CRS-4. Credit: NASA TV

The SpaceX Dragon CRS-4 cargo mission thundered to space on the company’s Falcon 9 rocket from Space Launch Complex-40 at Cape Canaveral Air Force Station in Florida at 1:52 a.m. EDT Sunday, Sept. 21, just hours after a deluge of widespread rain showers inundated central Florida. Story here.

CRS-4 marks the company’s fourth resupply mission to the ISS under a $1.6 Billion contract with NASA to deliver 20,000 kg (44,000 pounds) of cargo to the ISS during a dozen Dragon cargo spacecraft flights through 2016.

Eight more Dragon cargo missions to the ISS are slated through 2016.

The Dragon spacecraft is loaded with more than 5,000 pounds of science experiments, spare parts, crew provisions, food, clothing and supplies to the six person crews living and working aboard the ISS soaring in low Earth orbit under NASA’s Commercial Resupply Services (CRS) contract.

Alexander Gerst and Reid Wiseman watch the approach of the SpaceX Dragon from the Cupola. Credit: NASA TV — Alexander Gerst and Reid Wiseman watch the approach of the SpaceX Dragon from the Cupola.
Credit: NASA TV

This mission opens a new era in Earth science for the ISS. Tucked inside the Dragon’s unpressurized trunk section at the rear is the ISS-Rapid Scatterometer.

RapidScat is NASA’s first research payload aimed at conducting Earth science from the station’s exterior. The station’s robot arm will pluck RapidScat out of the trunk and attach it to an Earth-facing point on the exterior trusswork of ESA’s Columbus science module.

The remote sensing instrument will use radar pulses to observe the speed and direction of winds over the ocean for the improvement of weather forecasting.

Dragon also carries the first 3-D printer to space for the first such space based studies ever attempted by the astronaut crews. The printer will remain at the station for at least the next two years.

Also aboard are 20 mice housed in a special rodent habitat, as well as fruit flies.

Dragon will remain docked to the ISS for about a month. Then it will return to Earth via a parachute assisted Pacific Ocean landing off the coast of Baja California. On the return trip, the capsule will be packed with nearly 3,300 pounds (1,486 kg) of cargo, science samples, and computer and vehicle hardware for engineering checks.

The next SpaceX unmanned resupply mission is set to launch in early December on the CRS-5 flight.

The SpaceX Dragon private space freighter approaches the International Space Station. Credit: NASA TV — The SpaceX Dragon private space freighter approaches the International Space Station.
Credit: NASA TV

Stay tuned here for Ken’s continuing Earth and Planetary science and human spaceflight news.

Ken Kremer

SpaceX Falcon 9 rocket carrying a Dragon cargo capsule packed with science experiments and station supplies blasts off from Space Launch Complex 40 at Cape Canaveral Air Force Station, Florida, at 1:52 a.m. EDT on Sept. 21, 2014 bound for the ISS. Credit: Jeff Seibert/Wired4Space

A SpaceX Falcon 9 rocket carrying a Dragon cargo capsule packed with science experiments and station supplies blasts off from Space Launch Complex 40 at Cape Canaveral Air Force Station, Florida, at 1:52 a.m. EDT on Sept. 21, 2014 bound for the ISS. Credit: Ken Kremer/kenkremer.com

September 19, 2014December 23, 2015 by Ken Kremer

SpaceX Commercial Resupply Dragon Set for Sept. 21 Blastoff to Station – Watch Live

SpaceX Falcon 9 erect at Cape Canaveral launch pad 40 awaiting launch on Sept 20, 2014 on the CRS-4 mission.
Credit: Ken Kremer – kenkremer.com
Story/launch date/headline updated[/caption]

KENNEDY SPACE CENTER, FL – SpaceX is on the cusp of launching the company’s fourth commercial resupply Dragon spacecraft mission to the International Space Station (ISS) shortly after midnight, Saturday, Sept. 20, 2014, continuing a rapid fire launch pace and carrying NASA’s first research payload – RapidScat – aimed at conducting Earth science from the stations exterior.

Final preparations for the launch are underway right now at the Cape Canaveral launch pad with the stowage of sensitive late load items including a specially designed rodent habitat housing 20 mice.

Update 20 Sept: Poor weather scrubs launch to Sept. 21 at 1:52 a.m.

Fueling of the two stage rocket with liquid oxygen and kerosene propellants commences in the evening prior to launch.

If all goes well, Saturday’s launch of a SpaceX Falcon 9 rocket would be the second in less than two weeks, and the fourth over the past ten weeks. The last Falcon 9 successfully launched the AsiaSat 6 commercial telecom satellite on Sept. 7 – detailed here.

“We are ready to go,” said Hans Koenigsmann, SpaceX vice president of mission assurance, at a media briefing at the Kennedy Space Center today, Sept. 19.

Liftoff of the SpaceX Falcon 9 rocket on the CRS-4 mission bound for the ISS is targeted for an instantaneous window at 2:14 a.m. EDT from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida at the moment Earth’s rotation puts Cape Canaveral in the flight path of the ISS.

A SpaceX Falcon 9 rocket with Dragon cargo capsule bound for the ISS launched from Space Launch Complex 40 at Cape Canaveral, FL. File photo. Credit: Ken Kremer/kenkremer.com
Story/launch date/headline updated

You can watch NASA’s live countdown coverage which begins at 1 a.m. on NASA Television and NASA’s Launch Blog: http://www.nasa.gov/multimedia/nasatv/

Liftoff of SpaceX Falcon 9 rocket and Dragon from Cape Canaveral Air Force Station, Fla, April 18, 2014. Credit: Ken Kremer/kenkremer.com

The weather forecast is marginal at 50/50 with rain showers and thick clouds as the primary concerns currently impacting the launch site.

The CRS-4 missions marks the start of a new era in Earth science. The truck of the Dragon is loaded Dragon with the $30 Million ISS-Rapid Scatterometer to monitor ocean surface wind speed and direction.

RapidScat is NASA’s first research payload aimed at conducting Earth science from the stations exterior. The stations robot arm will pluck RapidScat out of the truck and attach it to an Earth-facing point on the exterior trusswork of ESA’s Columbus science module.

Dragon will also carry the first 3-D printer to space for studies by the astronaut crews over at least two years.

SpaceX Falcon 9 rests horizontally at Cape Canaveral launch pad 40 awaiting blastoff reset to Sept 21, 2014 on the CRS-4 mission. Credit: Ken Kremer - kenkremer.com — SpaceX Falcon 9 rests horizontally at Cape Canaveral launch pad 40 awaiting blastoff reset to Sept 21, 2014 on the CRS-4 mission. Credit: Ken Kremer – kenkremer.com

The science experiments and technology demonstrations alone amount too over 1644 pounds (746 kg) and will support 255 science and research investigations that will occur during the station’s Expeditions 41 and 42 for US investigations as well as for JAXA and ESA.

“This flight shows the breadth of ISS as a research platform, and we’re seeing the maturity of ISS for that,” NASA Chief Scientist Ellen Stofan said during a prelaunch news conference held today, Friday, Sept. 19 at NASA’s Kennedy Space Center.

After a two day chase, Dragon will be grappled and berth at an Earth-facing port on the stations Harmony module.

The Space CRS-4 mission marks the company’s fourth resupply mission to the ISS under a $1.6 Billion contract with NASA to deliver 20,000 kg (44,000 pounds) of cargo to the ISS during a dozen Dragon cargo spacecraft flights through 2016.

SpaceX Dragon resupply spacecraft arrives for successful berthing and docking at the International Space Station on Easter Sunday morning April 20, 2014. Credit: NASA TV

This week, SpaceX was also awarded a NASA contact to build a manned version of the Dragon dubbed V2 that will ferry astronauts crews to the ISS starting as soon as 2017.

NASA also awarded a second contact to Boeing to develop the CST-100 astronaut ‘space taxi’ to end the nation’s sole source reliance on Russia for astronaut launches in 2017.

Dragon V2 will launch on the same version of the Falcon 9 launching this cargo Dragon

Stay tuned here for Ken’s continuing SpaceX, Boeing, Sierra Nevada, Orbital Sciences, commercial space, Orion, Mars rover, MAVEN, MOM and more planetary and human spaceflight news.

Ken Kremer

SpaceX Falcon 9 awaits launch on Sept 20, 2014 on the CRS-4 mission. Credit: NASA

September 17, 2014December 23, 2015 by Ken Kremer

Completely Clandestine CLIO Climbs through Clouds to Orbit on Mystery Mission

United Launch Alliance (ULA) Atlas V rocket carrying the CLIO mission for Lockheed Martin Space Systems Company launched at 8:10 p.m. EDT September 16, 2014 from Space Launch Complex-41 on Cape Canaveral Air Force Station, Fla. Credit: Ken Kremer - kenkremer.com

CAPE CANAVERAL AIR FORCE STATION, FL – On a gloomy night and delayed by rain showers and thick threatening clouds to the very last moment of a two and a half launch window, the completely clandestine satellite known only as CLIO climbed slowly from a Cape Canaveral launch pad atop the thunderous flames of an Atlas V rocket on Tuesday evening on a mysterious mission to orbit.

Under a veil of secrecy for an unknown US government customer, the clouds cleared just enough to finally launch CLIO on a United Launch Alliance (ULA) Atlas V booster at 8:10 p.m. EDT September 16, 2014 from Space Launch Complex-41 on Cape Canaveral Air Force Station, Fla.

A series of ugly thunderstorms with a deluge of rain shows repeatedly passed by the launch pad forcing a weather related delay from the initial daylight launch time of 5:44 p.m.

The 19 story rocket is protected by a quartet of lighting masts ringing the launch pad. And they did their job last night.

Mysterious CLIO payload shrouded beneath 4-meter-diameter payload fairing in this up close view of the top of the United Launch Alliance (ULA) Atlas V rocket prior to launch from Space Launch Complex-41 on Cape Canaveral Air Force Station, Fla. Credit: Ken Kremer - kenkremer.com — Mysterious CLIO payload shrouded beneath 4-meter-diameter payload fairing in this up close view of the top of the United Launch Alliance (ULA) Atlas V rocket prior to launch from Space Launch Complex-41 on Cape Canaveral Air Force Station, Fla. Credit: Ken Kremer – kenkremer.com

It was touch and go with the weather at the Cape all evening. None of us knew what would happen with the satellite we know nothing about. So the weather induced hazy view of the pad fit perfectly with the mystery missions hazy motif.

Normally, even the highly secretive US National Reconnaissance Office (NRO) claims ownership of their satellites named with what seems to be a random numbering scheme.

But not for CLIO. The only publicly released information is that CLIO was built by Lockheed Martin and derived from their commercial A2100 series satellite bus used for commercial telecommunications satellites among others.

“It is an honor to work with Lockheed Martin Space Systems Company and all of our mission partners to launch this very important satellite,” said Jim Sponnick, ULA vice president, Atlas and Delta Programs, in a statement.

“Today’s launch marks ULA’s 11th successful mission this year and the 88th successful mission since ULA was formed in December 2006, a true testament to the team’s focus on mission success, one launch at a time.”

Myself and other media were allowed to visit the launch pad and photograph the rocket up close with the CLIO insignia emblazoned on the payload fairing, shrouding the mysterious satellite beneath.

But even the CLIO insignia is completely nondescript, unlike the rather artistic NRO logos with cool imaginary creatures and a number like NR0-66 for example.

We do know the type of rocket utilized is an Atlas V 401 configuration vehicle, which includes a 4-meter-diameter payload fairing and no solid rocket motors.

Mysterious CLIO and Atlas V rocket prior to launch from Space Launch Complex-41 on Cape Canaveral Air Force Station, Fla. Credit: Ken Kremer - kenkremer.com — Mysterious CLIO and Atlas V rocket prior to launch from Space Launch Complex-41 on Cape Canaveral Air Force Station, Fla. Credit: Ken Kremer – kenkremer.com

We do know that the Atlas booster for this mission was powered by a Russian made RD AMROSS RD-180 engine as is customary. The Centaur upper stage was powered by a single Aerojet Rocketdyne RL10A engine, according to ULA.

We do know the launch was successful and certainly a spectacular sight for myself and all the spectators.

Nightfall over CLIO and Atlas V rocket at Space Launch Complex-41 prior to weather delayed Sept. 16, 2014 launch from Cape Canaveral Air Force Station, Fla. Credit: Ken Kremer - kenkremer.com — Nightfall over CLIO and Atlas V rocket at Space Launch Complex-41 prior to weather delayed Sept. 16, 2014 launch from Cape Canaveral Air Force Station, Fla. Credit: Ken Kremer – kenkremer.com

CLIO is presumably somewhere in Earth orbit, circling overhead secretly at unknown altitude(s) and inclination(s).

CLIO marks ULA’s 60th successful mission from Cape Canaveral, the 11th successful mission this year and the 88th successful mission since the company’s formation in 2006.

Stay tuned here for Ken’s continuing Earth and Planetary science and human spaceflight news.

Ken Kremer

Extended time exposure partial streak shot of CLIO launch on September 16, 2014 from Space Launch Complex-41 on Cape Canaveral Air Force Station, Fla. Credit: Ken Kremer - kenkremer.com — Extended time exposure partial streak shot of CLIO launch on September 16, 2014 from Space Launch Complex-41 on Cape Canaveral Air Force Station, Fla. Credit: Ken Kremer – kenkremer.com

September 13, 2014December 23, 2015 by Ken Kremer

NASA’s First Completed Orion Takes First Step on Journey to the Launch Pad

NASA’s Orion EFT 1 crew module departs Neil Armstrong Operation and Checkout Building on Sept. 11, 2014 at the Kennedy Space Center, FL, beginning the long journey to the launch pad and planned liftoff on Dec. 4, 2014. Credit: Ken Kremer – kenkremer.com
Story updated[/caption]

KENNEDY SPACE CENTER – NASA’s first space worthy Orion crew module rolled out of its assembly facility at the Kennedy Space Center (KSC) on Thursday, Sept. 11, taking the first step on its nearly two month journey to the launch pad and planned blastoff this coming December.

The Orion spacecraft is NASA’s next generation human rated vehicle and is scheduled to launch on its maiden uncrewed mission dubbed Exploration Flight Test-1 (EFT-1) in December 2014.

Orion’s assembly was just completed this past weekend by technicians and engineers from prime contractor Lockheed Martin inside the agency’s Neil Armstrong Operations and Checkout (O & C) Facility. They have been working 24/7 to manufacture the capsule and prepare it for launch.

“I’m excited as can be,” said Scott Wilson, NASA’s Orion Manager of Production Operations at KSC during the move. “For some of us this has been ten years in the making.”

The black tiled Orion crew module (CM) was stacked atop an inert white colored service module (SM) in the O & C high bay in June. The CM/SM stack was placed on top of the Orion-to-stage adapter ring that will mate them to the booster rocket. Altogether the capsule, service module and adapter ring stack stands 40 feet tall and 16 feet in diameter.

“This is awesome,” Bob Cabana, Kennedy Space Center director and former shuttle commander, told the media during the rollout.

NASA’s Orion EFT 1 crew module enters the Payload Hazardous Servicing Facility on Sept. 11, 2014 at the Kennedy Space Center, FL, beginning the long journey to the launch pad and planned liftoff on Dec. 4, 2014. Credit: Ken Kremer - kenkremer.com — NASA’s Orion EFT 1 crew module enters the Payload Hazardous Servicing Facility on Sept. 11, 2014 at the Kennedy Space Center, FL, beginning the long journey to the launch pad and planned liftoff on Dec. 4, 2014. Credit: Ken Kremer – kenkremer.com

Workers subsequently covered the crew module and its thermal insulating tiles with a see through foil to shield the capsule and blanket it under a protective climate controlled atmosphere to guard against humidity.

The CM/SM stack was then lifted and placed onto a 36-wheeled transporter and moved about 1 mile to a KSC facility named the Payload Hazardous Servicing Facility (PHFS) for fueling. The move took about an hour.

“Orion will stay at the PHFS for about a month,” Wilson told me in a KSC interview during the move.

Orion will be fueled with ammonia and hyper-propellants for its flight test, said Wilson.

The fueled Orion will then move yet again to the Launch Abort System Facility (LASF) for the installation of the launch abort system (LAS).

The full Orion stack will rollout to Space Launch Complex 37 in early November.

“Nothing about building the first of a brand new space transportation system is easy,” said Mark Geyer, Orion Program manager.

“But the crew module is undoubtedly the most complex component that will fly in December. The pressure vessel, the heat shield, parachute system, avionics — piecing all of that together into a working spacecraft is an accomplishment. Seeing it fly in three months is going to be amazing.”

The Orion EFT-1 test flight is slated to soar to space atop the mammoth, triple barreled United Launch Alliance (ULA) Delta IV Heavy rocket from Cape Canaveral, Florida, on Dec. 4, 2014.

The state-of-the-art Orion spacecraft will carry America’s astronauts on voyages venturing farther into deep space than ever before – past the Moon to Asteroids, Mars and Beyond!

Ken Kremer

September 7, 2014December 23, 2015 by Ken Kremer

Sweet Success for SpaceX with Second Successful AsiaSat Launch This Summer

SpaceX Falcon 9 launch of AsiaSat 6 communications satellite at 1 a.m. EDT on Sept. 7, 2014 from Cape Canaveral. Florida. Credit: John Studwell/AmericaSpace

Shortly after midnight this morning, Sunday, Sept. 7, SpaceX scored a major success with the spectacular night time launch of the commercial AsiaSat 6 satellite from Cape Canaveral, Florida, that briefly turned night into day along the Florida Space Coast.

A SpaceX Falcon 9 rocket carrying the AsiaSat 6 communications satellite blasted off at 1 a.m. EDT today from Space Launch Complex 40 on Cape Canaveral Air Force Station at the opening of the launch window.

The two stage, 224 foot-tall (68.4 meter-tall) Falcon 9 rocket performed flawlessly, soaring to space and placing the five ton AsiaSat 6 into a geosynchronous transfer orbit.

SpaceX confirmed a successful spacecraft separation about 32 minutes after liftoff and contact with the satellite following deployment at about 1:30 a.m. EDT.

The Falcon 9 delivered AsiaSat 6 satellite into a 185 x 35,786 km geosynchronous transfer orbit at 25.3 degrees.

Stunning “streak” effect, with high-level clouds illuminated, during first-stage flight of SpaceX Falcon 9 rocket with AsiaSat 6 on Sept. 7, 2014 from Cape Canaveral, FL. Credit: John Studwell/AmericaSpace

Sunday’s liftoff marked a sweet success for SpaceX since it was the second successive launch of an AsiaSat communications satellite in about a month’s time. AsiaSat is a telecommunications operator based in Hong Kong.

The first launch of the two satellite series with AsiaSat 8 took place from Cape Canaveral on Aug. 5.

The launch was webcast live by SpaceX on the firm’s website.

The private satellites will serve markets in Southeast Asia and China.

Thailand’s leading satellite operator, Thaicom, is a partner of AsiaSat on AsiaSat 6 and will be using half of the satellite’s capacity to provide services under the name of THAICOM 7, according to the press kit.

SpaceX Falcon 9 launch of AsiaSat 6 communications satellite at 1 a.m. EDT on Sept. 7, 2014 from Cape Canaveral. Florida. Credit: Alan Walters/AmericaSpace

The AsiaSat 6 launch was originally scheduled for Aug. 26, just 3 weeks after AsiaSat 8, but was postponed at the last minute after the detonation of a Falcon 9R test rocket at a SpaceX test site in Texas.

SpaceX CEO Elon Musk said the team needed to recheck the rocket systems to insure a successful blastoff since both rockets use Merlin 1D engines, but are configured with different software.

The Falcon 9 first stage is loaded with liquid oxygen (LOX) and rocket-grade kerosene (RP-1) propellants and powered by nine Merlin 1D engines that generate about 1.3 million pounds of liftoff thrust.

The second stage is powered by a single, Merlin 1D vacuum engine.

SpaceX Falcon 9 soars to space with AsiaSat 6 communications satellite at 1 a.m. EDT on Sept. 7, 2014 from Cape Canaveral. Florida. Credit: Alan Walters/AmericaSpace

Today’s liftoff was critical in clearing the path for the next SpaceX launch – the CRS-4 cargo resupply mission for NASA bound for the International Space Station (ISS).

The Falcon 9 launch of the cargo Dragon on the CRS-4 mission is currently targeted for no earlier than Sept. 19. But a firm launch date has not been set.

Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.

Ken Kremer

September 2, 2014December 23, 2015 by Ken Kremer

NASA’s MAVEN Orbiter 3 Weeks and 4 Million Miles from Mars

NASA’s MAVEN spacecraft is depicted in orbit around an artistic rendition of planet Mars, which is shown in transition from its ancient, water-covered past, to the cold, dry, dusty world that it has become today. Credit: NASA

Now just 3 weeks and 4 million miles (6 million kilometers) from rendezvous with Mars, NASA’s ground breaking Mars Atmosphere and Volatile Evolution (MAVEN) orbiter is tracking precisely on course for the crucial Mars Orbital Insertion (MOI) engine firing slated for September 21, 2014.

MAVEN will investigate Mars transition from its ancient, water-covered past, to the cold, dry, dusty world that it has become today.

It’s been a picture perfect flight thus far during the ten month interplanetary voyage from Earth to Mars. To date it has traveled 93% of the path to the Red Planet.

As of August 29th, MAVEN was 198 million kilometers (123 million miles) from Earth and 6.6 million kilometers (4.1 million miles) from Mars. Its velocity is 22.22 kilometers per second (49,705 miles per hour) as it moves on a heliocentric arc around the Sun.

“MAVEN continues on a smooth journey to Mars. All spacecraft systems are operating nominally,” reported David Mitchell, MAVEN Project Manager at NASA’s Goddard Space Flight Center, in an update.

MAVEN is NASA’s next Mars Orbiter and will investigate how the planet lost most of its atmosphere and water over time. Credit: NASA

In fact, MAVEN’s navigation from Earth to Mars has been so perfect that the team will likely cancel the final Trajectory Correction Maneuver (TCM) that had been planned for September 12.

The team will make a final decision on whether TCM-4 is necessary on Sept. 4.

Previously the team also cancelled TCM-3 that had been planned for July 23 because it was “not warranted.”

“We are tracking right where we want to be,” says Mitchell.

TCM-1 and TCM-2 took place as scheduled in December 2013 and February 2014, Bruce Jakosky, MAVEN’s Principal Investigator told Universe Today.

These thruster firings ensure the craft is aimed on the correct course through interplanetary space.

See MAVEN’s trajectory route map below.

Maven spacecraft trajectory to Mars. Credit: NASA

“Since we are now in a ‘pre-Mars Orbit Insertion (MOI) moratorium’, all instruments are powered off until after we arrive at the Red Planet,” according to Mitchell.

Although MAVEN’s instrument are resting, the team has no time to rest.

They must ensure that all is in readiness for the MOI burn and held a review at the Jet Propulsion Laboratory with the Deep Space Network (DSN) team and confirmed its readiness to support the engine firing on MOI night.

The entire team also conducted a readiness rehearsal, comprising Lockheed Martin operations center in Denver, Colorado, the backup operations center at Goddard Space Flight Center in Greenbelt, Maryland, and the Jet Propulsion Laboratory in Pasadena, California.

“The review was successful; DSN is ready to support us on MOI night,” says Mitchell.

The do or die MOI maneuver is scheduled for approximately 10 p.m. EDT on Sept. 21, 2014 when MAVEN will rendezvous with the Red Planet following a ten month interplanetary voyage from Earth.

The $671 Million MAVEN spacecraft’s goal is to study Mars upper atmosphere to explore how the Red Planet lost most of its atmosphere and water over billions of years.

The MAVEN probe carries nine sensors in three instrument suites to study why and exactly when did Mars undergo the radical climatic transformation.

“I’m really looking forward to getting to Mars and starting our science!” Bruce Jakosky, MAVEN’s Principal Investigator from the University of Colorado at Boulder, told me.

MAVEN aims to discover the history of water and habitability stretching back over billions of years on Mars.

It will measure current rates of atmospheric loss to determine how and when Mars lost its atmosphere and water.

NASA’s Mars bound MAVEN spacecraft launches atop Atlas V booster at 1:28 p.m. EST from Space Launch Complex 41 at Cape Canaveral Air Force Station on Nov. 18, 2013. Image taken from the roof of the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center. Credit: Ken Kremer/kenkremer.com

MAVEN thundered to space over nine months ago on Nov. 18, 2013 following a flawless blastoff from Cape Canaveral Air Force Station’s Space Launch Complex 41 atop a powerful Atlas V rocket and thus began a 10 month interplanetary voyage from Earth to the Red Planet.

MAVEN is streaking to Mars along with ISRO’s MOM orbiter, which arrives a few days later on September 24, 2014.

MOM and MAVEN will join Earth’s fleet of 3 current orbiters from NASA and ESA as well as NASA’s pair of sister surface rovers Curiosity and Opportunity.

Meanwhile last week, NASA announced it was proceeding with development of the mammoth SLS heavy lift rocket that will one day launch astronauts to Mars in the Orion capsule.

Stay tuned here for Ken’s continuing MAVEN, MOM, Rosetta, Opportunity, Curiosity, Mars rover and more Earth and planetary science and human spaceflight news.

Ken Kremer

August 9, 2014December 23, 2015 by Ken Kremer

Airframe Structure for First Commercial Dream Chaser Spacecraft Unveiled

SNC's Dream Chaser® orbital structural airframe at Lockheed Martin in Ft. Worth, Texas. Credit: Lockheed Martin

The orbital airframe structure for the first commercial Dream Chaser mini-shuttle that will launch to Earth orbit just over two years from now has been unveiled by Sierra Nevada Corporation (SNC) and program partner Lockheed Martin.

Sierra Nevada is moving forward with plans for Dream Chaser’s first launch and unmanned orbital test flight in November 2016 atop a United Launch Alliance (ULA) Atlas V rocket from Cape Canaveral, Florida.

The winged Dream Chaser is being developed under NASA’s Commercial Crew Program aimed at restoring America’s indigenous human spaceflight access to low Earth orbit and the International Space Station (ISS).

Lockheed Martin is fabricating the structural components for the Dream Chaser’s orbital spacecraft composite structure at the NASA’s Michoud Assembly Facility (MAF) in New Orleans, Louisiana.

MAF has played a long and illustrious history in human space flight dating back to Apollo and also as the site where all the External Tanks for NASA’s space shuttle program were manufactured. Lockheed Martin also builds the pressure vessels for NASA’s deep space Orion crew vehicle at MAF.

Each piece is thoroughly inspected to insure it meets specification and then shipped to Lockheed Martin’s Aeronautics facility in Fort Worth, Texas for integration into the airframe and co-bonded assembly.

Following helicopter release the private Dream Chaser spaceplane starts glide to runway at Edwards Air Force Base, Ca. during first free flight landing test on Oct. 26, 2013 - in this screenshot. Credit: Sierra Nevada Corp. — Following helicopter release the private Dream Chaser spaceplane starts glide to runway at Edwards Air Force Base, Ca. during first free flight landing test on Oct. 26, 2013 – in this screenshot. Credit: Sierra Nevada Corp.

Sierra Nevada chose Lockheed Martin for this significant role in building Dream Chaser airframe based on their wealth of aerospace experience and expertise.

The composite airframe structure was recently unveiled at a joint press conference by Sierra Nevada Corporation and Lockheed Martin at the Fort Worth facility.

“As a valued strategic partner on SNC’s Dream Chaser Dream Team, Lockheed Martin is under contract to manufacture Dream Chaser orbital structure airframes,” said Mark N. Sirangelo, corporate vice president of SNC’s Space Systems, in a statement.

“We competitively chose Lockheed Martin because they are a world leader in composite manufacturing, have the infrastructure, resources and quality control needed to support the needs of an orbital vehicle and have a proven track record of leading our nation’s top aviation and aerospace programs. Lockheed Martin’s diverse heritage coupled with their current work on the Orion program adds an extra element of depth and expertise to our program. SNC and Lockheed Martin continue to expand and develop a strong multi-faceted relationship.”

Dream Chaser measures about 29 feet long with a 23 foot wide wing span and is about one third the size of NASA’s space shuttle orbiters.

“We are able to tailor our best manufacturing processes, and our innovative technology from across the corporation to fit the needs of the Dream Chaser program,” said Jim Crocker, vice president of Lockheed Martin’s Space Systems Company Civil Space Line of Business.

Upon completion of the airframe manufacturing at Ft Worth, it will be transported to SNC’s Louisville, Colorado, facility for final integration and assembly.

Lockheed Martin will also process Dream Chaser between orbital flights at the Kennedy Space Center, FL in the recently renamed Neil Armstrong Operations and Checkout Building.

SNC announced in July that they successfully completed and passed a series of risk reduction milestone tests on key flight hardware systems under its Commercial Crew Integrated Capability (CCiCap) agreement with NASA that move the private reusable spacecraft closer to its critical design review (CDR) and first flight.

As a result of completing Milestones 9 and 9a, SNC has now received 92% of its total CCiCAP Phase 1 NASA award of $227.5 million.

“We are on schedule to launch our first orbital flight in November of 2016, which will mark the beginning of the restoration of U.S. crew capability to low-Earth orbit,” says Sirangelo.

The private Dream Chaser is a reusable lifting-body design spaceship that will carry a mix of cargo and up to a seven crewmembers to the ISS. It will also be able to land on commercial runways anywhere in the world, according to SNC.

Dream Chaser is among a trio of US private sector manned spaceships being developed with seed money from NASA’s Commercial Crew Program in a public/private partnership to develop a next-generation crew transportation vehicle to ferry astronauts to and from the International Space Station by 2017 – a capability totally lost following the space shuttle’s forced retirement in 2011.

The SpaceX Dragon and Boeing CST-100 ‘space taxis’ are also vying for funding in the next round of contracts to be awarded by NASA around September 2014, NASA officials have told me.

Stay tuned here for Ken’s continuing Sierra Nevada, Boeing, SpaceX, Orbital Sciences, commercial space, Orion, Rosetta, Curiosity, Mars rover, MAVEN, MOM and more planetary and human spaceflight news.

Ken Kremer

Scale models of NASA’s Commercial Crew program vehicles and launchers; Boeing CST-100, Sierra Nevada Dream Chaser, SpaceX Dragon. Credit: Ken Kremer/kenkremer.com

July 23, 2014December 23, 2015 by Ken Kremer

Risk Reduction Milestone Tests Move Commercial Dream Chaser Closer to Critical Design Review and First Flight

The winged Dream Chaser mini-shuttle under development by Sierra Nevada Corp. (SNC) has successfully completed a series of risk reduction milestone tests on key flight hardware systems thereby moving the private reusable spacecraft closer to its critical design review (CDR) and first flight under NASA’s Commercial Crew Program aimed at restoring America’s indigenous human spaceflight access to low Earth orbit and the space station.

SNC announced that it passed NASA’s Milestones 9 and 9a involving numerous Risk Reduction and Technology Readiness Level (TRL) advancement tests of critical Dream Chaser® systems under its Commercial Crew Integrated Capability (CCiCap) agreement with the agency.

Seven specific hardware systems underwent extensive testing and passed a major comprehensive review with NASA including; the Main Propulsion System, Reaction Control System, Crew Systems, Environmental Control and Life Support Systems (ECLSS), Structures, Thermal Control (TCS) and Thermal Protection Systems (TPS).

SNC former astronaut Lee Archambault prepares for Dream Chaser® Crew Systems Test. Credit: SNC

The tests are among the milestones SNC must complete to receive continued funding from the Commercial Crew Integrated Capability initiative (CCiCAP) under the auspices of NASA’s Commercial Crew Program.

Over 3,500 tests were involved in completing the Risk Reduction and TRL advancement tests on the seven hardware systems whose purpose is to significantly retire overall program risk enable a continued maturation of the Dream Chaser’s design.

Dream Chaser is a reusable lifting-body design spaceship that will carry a mix of cargo and up to a seven crewmembers to the ISS. It will also be able to land on commercial runways anywhere in the world, according to SNC.

“By thoroughly assessing and mitigating each of the previously identified design risks, SNC is continuing to prove that Dream Chaser is a safe, robust, and reliable spacecraft,” said Mark N. Sirangelo, corporate vice president of SNC’s Space Systems, in a statement.

“These crucial validations are vital steps in our Critical Design Review and in showing that we have a very advanced and capable spacecraft. This will allow us to quickly and confidently move forward in restoring cutting-edge transportation to low-Earth orbit from the U.S.”

The Dream Chaser is among a trio of US private sector manned spaceships being developed with seed money from NASA’s Commercial Crew Program in a public/private partnership to develop a next-generation crew transportation vehicle to ferry astronauts to and from the International Space Station by 2017 – a capability totally lost following the space shuttle’s forced retirement in 2011.

The SpaceX Dragon and Boeing CST-100 ‘space taxis’ are also vying for funding in the next round of contracts to be awarded by NASA around August/September 2014.

“Our partners are making great progress as they refine their systems for safe, reliable and cost-effective spaceflight,” said Kathy Lueders, manager of NASA’s Commercial Crew Program.

“It is extremely impressive to hear and see the interchange between the company and NASA engineering teams as they delve into the very details of the systems that help assure the safety of passengers.”

After completing milestones 9 and 9a, SNC has now received 92% of its total CCiCAP Phase 1 NASA award of $227.5 million.

“We are on schedule to launch our first orbital flight in November of 2016, which will mark the beginning of the restoration of U.S. crew capability to low-Earth orbit,” says Sirangelo.

Dream Chaser measures about 29 feet long with a 23 foot wide wing span and is about one third the size of NASA’s space shuttle orbiters.

It will launch atop a United Launch Alliance (ULA) Atlas V rocket from Cape Canaveral Launch Complex 41 in Florida.

Since the forced shutdown of NASA’s Space Shuttle program following its final flight in 2011, US astronauts have been 100% dependent on the Russians and their cramped but effective Soyuz capsule for rides to the station and back – at a cost exceeding $70 million per seat.

The Dream Chaser design builds on the experience gained from NASA Langley’s earlier exploratory engineering work with the HL-20 manned lifting-body vehicle.

Read my prior story detailing the wind tunnel testing milestone – here.

Stay tuned here for Ken’s continuing Sierra Nevada, Boeing, SpaceX, Orbital Sciences, commercial space, Orion, Curiosity, Mars rover, MAVEN, MOM and more planetary and human spaceflight news.

Ken Kremer