sierra nevada corporation Archives

November 14, 2017 by Matt Williams

NASA’s Next-Generation Spaceplane Passes Free Flight Test

Sierra Nevada Corp’s Dream Chaser lands on Edwards Air Force Base in California. The spacecraft went through preparations for flight at NASA’s Armstrong Flight Research Center. Credits: NASA/Carla Thomas

It’s called the Dream Chaser, a reusable spaceplane that will one day transport cargo and crews to the International Space Station. For the past ten years, the Sierra Nevada Corporation and NASA have been developing and testing this next-generation space vehicle. When it is ready, this vehicle will not only provide a more cost-effective way of servicing the ISS, it will also help restore domestic launch capability to the United States.

On Saturday, November 11th, the Dream Chaser passed an important milestone by conducting a successful free flight test. This took place at Edwards Air Force Base in California, and verified the spaceplane’s ability to glide and land autonomously. This, in addition to verifying several key avionic and flight systems, is a strong indication that the spaceplane will be capable of conducting runs to and from Low-Earth Orbit (LEO) in the near future.

This test involved the spaceplane being lifted to an altitude of 3,780 meters (12,400 feet) and then let go to glide freely. It then deployed its landing gears and touched down on the Edwards Air Force Base runway before coming to a full stop. This runway, it should be noted, is very similar to the Kennedy Space Center Shuttle Landing Facility runway that the Dream Chaser will land on once it is operational.

This flight test validated the performance of the Dream Chaser during what is arguably the most critical part of a mission – the approach and landing phase – which will be the final phase of future flights from the ISS. The ability to conduct automated landings is central to the spaceplane’s reusability, which operates in much the same way as the now-retired Space Shuttle did.

This process entails the craft being launched into orbit aboard a rocket (Atlas V or Ariane 5), maneuvering under its own power while in orbit so that it can dock with the ISS (or other orbiting facilities), and then re-entering the atmosphere and returning to a landing strip. As Mark Sirangelo, the corporate vice president of SNC’s Space System business area, said in a company press release:

“The Dream Chaser flight test demonstrated excellent performance of the spacecraft’s aerodynamic design and the data shows that we are firmly on the path for safe, reliable orbital flight.”

The flight test also helped advance the vehicle as part of NASA’s Commercial Crew Program and prepare it for service under Commercial Resupply Services 2 program. These programs consist of NASA working closely with private aerospace companies to develop new spacecraft and launch systems that will be capable of carrying crews to locations in LEO and to the ISS.

Front-end view of the Dream Chaser spaceplane. Credit: Sierra Nevada Corporation

This approach and landing test expands on the phase one flight test, which took place back in October of 2013. For this free-flight test, the vehicle was released from a “skycrane” helicopter and flew a short flight, touching down less than a minute later. Just prior to landing, the left main landing gear failed to deploy resulting in a crash landing. However, the vehicle and its crew compartment were left intact.

For the second flight test, SNC and NASA incorporated orbital vehicle avionics and flight software for the first time. The trajectory also included specific program test inputs which, together with the added software, provided validations for orbital vehicle operations. Over the coming days and weeks, SNC and NASA will be evaluating all the data obtained during the flight, which includes the Dream Chaser aerodynamic and integrated system performance.

The data that SNC gathers from this test campaign will help inform the final design of the cargo Dream Chaser, which will be capable of transporting crews of six astronauts to the ISS. As Fatih Ozmen, the CEO of SNC, exclaimed:

“I’m so proud of the Dream Chaser team for their continued excellence. This spacecraft is the future and has the ability to change the way humans interact with space, and I couldn’t be happier with SNC’s dedicated team and the results of the test.”

If all goes well, SNC and NASA are hoping to begin conducting cargo deliveries by 2019. By 2024, it is hoped that a total of six cargo delivery missions will take place. No indications have been given as to when the crewed variant could start bringing astronauts to the ISS. But once that is possible, NASA will no longer be forced to rely on Roscosmos and their fleet of Soyuz rockets to send astronauts into space.

Be sure to check out this video of the Dream Chaster Cargo System, courtesy of Sierra Nevada Corporation:

Further Reading: NASA, Sierra Nevada

July 25, 2017July 28, 2017 by Ken Kremer

Dream Chaser Mini-Shuttle to Fly ISS Resupply Missions on ULA Atlas V

Artist’s concept of the Sierra Nevada Corporation Dream Chaser spacecraft launching atop the United Launch Alliance Atlas V rocket in the 552 configuration on cargo missions to the International Space Station. Credit: ULA

The first two missions of the unmanned Dream Chaser mini-shuttle carrying critical cargo to the International Space Station (ISS) for NASA will fly on the most powerful version of the Atlas V rocket and start as soon as 2020, announced Sierra Nevada Corporation (SNC) and United Launch Alliance (ULA).

“We have selected United Launch Alliance’s Atlas V rocket to launch our first two Dream Chaser® spacecraft cargo missions,” said SNC of Sparks, Nevada.

Dream Chaser will launch atop the commercial Atlas V in its most powerful configuration, dubbed Atlas V 552, with five strap on solid rocket motors and a dual engine Centaur upper stage while protectively tucked inside a five meter diameter payload fairing – with wings folded.

Blast off of Dream Chaser loaded with over 5500 kilograms of cargo mass for the space station crews will take place from ULA’s seaside Space Launch Complex-41 on Cape Canaveral Air Force Station in Florida.

Sierra Nevada Corporation’s Dream Chaser spacecraft docks at the International Space Station.
Credits: Sierra Nevada Corporation

The unique lifting body design enables runway landings for Dream Chaser, similar to the NASA’s Space Shuttle at the Shuttle Landing Facility runway at NASA’s Kennedy Space Center in Florida.

The ULA Atlas V enjoys a 100% success rate. It has also been chosen by Boeing to ferry crews on piloted missions of their CST-100 Starliner astronaut space taxi to the ISS and back. The Centaur upper stage will be equipped with two RL-10 engines for both Dream Chaser and Starliner flights.

“SNC recognizes the proven reliability of the Atlas V rocket and its availability and schedule performance makes it the right choice for the first two flights of the Dream Chaser,” said Mark Sirangelo, corporate vice president of SNC’s Space Systems business area, in a statement.

“Humbled and honored by your trust in us,” tweeted ULA CEO Tory Bruno following the announcement.

Liftoff of the maiden pair of Dream Chaser cargo missions to the ISS are expected in 2020 and 2021 under the Commercial Resupply Services 2 (CRS2) contract with NASA.

Rendering of Launch of SNC’s Dream Chaser Cargo System Aboard an Atlas V Rocket. Credit: SNC

“ULA is pleased to partner with Sierra Nevada Corporation to launch its Dream Chaser cargo system to the International Space Station in less than three years,” said Gary Wentz, ULA vice president of Human and Commercial Systems.

“We recognize the importance of on time and reliable transportation of crew and cargo to Station and are honored the Atlas V was selected to continue to launch cargo resupply missions for NASA.”

By utilizing the most powerful variant of ULA’s Atlas V, Dream Chaser will be capable of transporting over 5,500 kilograms (12,000 pounds) of pressurized and unpressurized cargo mass – including science experiments, research gear, spare part, crew supplies, food, water, clothing and more per ISS mission.

“In addition, a significant amount of cargo, almost 2,000 kilograms is directly returned from the ISS to a gentle runway landing at a pinpoint location,” according to SNC.

“Dream Chaser’s all non-toxic systems design allows personnel to simply walk up to the vehicle after landing, providing immediate access to time-critical science as soon as the wheels stop.”

“ULA is an important player in the market and we appreciate their history and continued contributions to space flights and are pleased to support the aerospace community in Colorado and Alabama,” added Sirangelo.

Under the NASA CRS-2 contract awarded in 2016, Dream Chaser becomes the third ISS resupply provider, joining the current ISS commercial cargo vehicle providers, namely the Cygnus from Orbital ATK of Dulles, Virginia and the cargo Dragon from SpaceX of Hawthorne, California.

NASA decided to plus up the number of ISS commercial cargo providers from two to three for the critical task of ensuring the regular delivery of critical science, crew supplies, provisions, spare parts and assorted gear to the multinational crews living and working aboard the massive orbiting outpost.

NASA’s CRS-2 contracts run from 2019 through 2024 and specify six cargo missions for each of the three commercial providers.

By adding a new third provider, NASA simultaneously gains the benefit of additional capability and flexibility and also spreads out the risk.

Both SpaceX and Orbital ATK suffered catastrophic launch failures during ISS resupply missions, in June 2015 and October 2014 respectively, from which both firms have recovered.

Orbital ATK and SpaceX both successfully launched ISS cargo missions this year. Indeed a trio of Orbital ATK Cygnus spacecraft have already launched on the Atlas V, including the OA-7 resupply mission in April 2017.

Orbital ATK’s seventh cargo delivery flight to the International Space Station -in tribute to John Glenn- launched at 11:11 a.m. EDT April 18, 2017, on a United Launch Alliance Atlas V rocket from Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida. Credit: Ken Kremer/kenkremer.com

SpaceX has already launched a pair of resupply missions this year on the CRS-10 and CRS-11 flights in February and June 2017.

Unlike the Cygnus which burns up on reentry and Dragon which lands via parachutes, the reusable Dream Chaser is capable of low-g reentry and runway landings. This is very beneficial for sensitive scientific experiments and allows much quicker access by researchers to time critical cargo.

1st Reused SpaceX Dragon cargo craft lifts off from Launch Complex 39A at NASA’s Kennedy Space Center in Florida at 5:07 p.m. June 3, 2017 on CRS-11 mission carrying 3 tons of research equipment, cargo and supplies to the International Space Station. Credit: Ken Kremer/kenkremer.com

Dream Chaser has been under development for more than 10 years. It was originally developed as a manned vehicle and a contender for NASA’s commercial crew vehicles. When SNC lost the bid to Boeing and SpaceX in 2014, the company opted to develop this unmanned variant instead.

A full scale test version of the original Dream Chaser is currently undergoing ground tests at NASA’s Armstrong Flight Research Center in California. Approach and landing tests are planned for this fall.

Other current cargo providers to the ISS include the Russian Progress and Japanese HTV vessels.

Watch for Ken’s onsite space mission reports direct from the Kennedy Space Center and Cape Canaveral Air Force Station, Florida.

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

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

Sierra Nevada Dream Chaser engineering test article in flight during prior captive-carry tests. Credit: NASA

October 19, 2015October 20, 2015 by Ken Kremer

SpaceX Sets Ambitious Falcon 9 ‘Return to Flight’ Agenda with Dual December Blastoffs

SpaceX ‘Return to Flight’ launch upcoming in December 2015 features 11 ORBCOMM satellites. SpaceX Falcon 9 rocket on Pad 40 at Cape Canaveral, FL, prior to launch on July 14, 2014 on prior ORBCOMM OG2 mission with six OG2 satellites. The USAF has certified the Falcon 9 to compete for US national security launches. Credit: Ken Kremer/kenkremer.com

SpaceX Falcon 9 rocket after successful static hot-fire test on June 13 on Pad 40 at Cape Canaveral, FL. Launch is slated for Friday, June 20, 2014 on ORBCOMM OG2 mission with six OG2 satellites. Credit: Ken Kremer/kenkremer.com — SpaceX ‘Return to Flight’ launch upcoming in December 2015 features 11 ORBCOMM satellites. SpaceX Falcon 9 rocket on Pad 40 at Cape Canaveral, FL, prior to launch on July 14, 2014 on prior ORBCOMM OG2 mission with six OG2 satellites. The USAF has certified the Falcon 9 to compete for US national security launches. Credit: Ken Kremer/kenkremer.com

SpaceX plans an ambitious ‘Return to Flight’ agenda with their Falcon 9 rocket comprising dual launches this coming December, nearly six months after their failed launch in June 2015 that culminated in the total mid-air loss of the rocket and NASA cargo bound for the crew aboard the International Space Station (ISS).

The double barreled salvo of Falcon 9 blastoffs both involve launches of commercial communications satellites – first for Orbcomm followed by SES – and are specifically devised to allow a gradually ramp up in complexity, as SpaceX introduces fixes for the launch failure and multiple improvements to the boosters overall design. Continue reading “SpaceX Sets Ambitious Falcon 9 ‘Return to Flight’ Agenda with Dual December Blastoffs”

August 26, 2014December 23, 2015 by Ken Kremer

Boeing Completes All CST-100 Commercial Crew CCiCAP Milestones on Time and on Budget for NASA – Ahead of Competitors

Boeing unveiled full scale mockup of their commercial CST-100 'Space Taxi' on June 9, 2014 at its intended manufacturing facility at the Kennedy Space Center in Florida. The private vehicle will launch US astronauts to low Earth orbit and the ISS from US soil. Credit: Ken Kremer - kenkremer.com

In the ‘new race to space’ to restore our capability to launch Americans to orbit from American soil with an American-built commercial ‘space taxi’ as rapidly and efficiently as possible, Boeing has moved to the front of the pack with their CST-100 spaceship by completing all their assigned NASA milestones on time and on budget in the current phase of the agency’s Commercial Crew Program (CCP).

Boeing is the first, and thus far only one of the three competitors (including Sierra Nevada Corp. and SpaceX) to complete all their assigned milestone task requirements under NASA’s Commercial Crew Integrated Capability (CCiCap) initiative funded under the auspices of the agency’s Commercial Crew Program.

The CST-100 is a privately built, man rated capsule being developed with funding from NASA via the commercial crew initiative in a public/private partnership between NASA and private industry.

The overriding goal is restart America’s capability to reliably launch our astronauts from US territory to low-Earth orbit (LEO) and the International Space Station (ISS) by 2017.

Hatch opening to Boeing’s commercial CST-100 crew transporter. Credit: Ken Kremer - kenkremer.com — Hatch opening to Boeing’s commercial CST-100 crew transporter. Credit: Ken Kremer – kenkremer.com

Private space taxis are the fastest and cheapest way to accomplish that and end the gap in indigenous US human spaceflight launches.

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.

Boeing announced that NASA approved the completion of the final two commercial crew milestones contracted to Boeing for the CST-100 development.

These last two milestones are the Phase Two Spacecraft Safety Review of its Crew Space Transportation (CST)-100 spacecraft and the Critical Design Review (CDR) of its integrated systems.

The CDR milestone was completed in July and comprised 44 individual CDRs including propulsion, software, avionics, landing, power and docking systems.

The Phase Two Spacecraft Safety Review included an overall hazard analysis of the spacecraft, identifying life-threatening situations and ensuring that the current design mitigated any safety risks, according to Boeing.

“The challenge of a CDR is to ensure all the pieces and sub-systems are working together,” said John Mulholland, Boeing Commercial Crew program manager, in a statement.

“Integration of these systems is key. Now we look forward to bringing the CST-100 to life.”

Boeing CST-100 manned space capsule in free flight in low Earth orbit will transport astronaut crews to the International Space Station. Credit: Boeing

Passing the CDR and completing all the NASA milestone requirements is a significant step leading to the final integrated design for the CST-100 space taxi, ground systems and Atlas V launcher that will boost it to Earth orbit from Space Launch Complex-41 on Cape Canaveral Air Force Station in Florida.

The Sierra Nevada Dream Chaser and SpaceX Dragon V2 and are also receiving funds from NASA’s commercial crew program.

All three American aerospace firms vying for the multibillion dollar NASA contract to build an American ‘space taxi’ to ferry US astronauts to the International Space Station and back as soon as 2017.

NASA’s Commercial Crew Program office is expected to announce the winner(s) of the high stakes, multibillion dollar contract to build America’s next crew vehicles in the next program phase, known as Commercial Crew Transportation Capability (CCtCap), “sometime around the end of August/September,” NASA News spokesman Allard Beutel confirmed to me.

“We don’t have a scheduled date for the commercial crew award(s).”

There will be 1 or more CCtCAP winners.

Boeing CST-100 capsule interior up close. Credit: Ken Kremer - kenkremer.com — Boeing CST-100 capsule interior up close. Credit: Ken Kremer – kenkremer.com

On June 9, 2014, Boeing revealed the design of their CST-100 astronaut spaceliner by unveiling a full scale mockup of their commercial ‘space taxi’ at the new home of its future manufacturing site at the Kennedy Space Center (KSC) located inside a refurbished facility that most recently was used to prepare NASA’s space shuttle orbiters for assembly missions to the ISS.

The CST-100 crew transporter was unveiled at the invitation only ceremony and media event held inside the gleaming white and completely renovated NASA processing hangar known as Orbiter Processing Facility-3 (OPF-3) – and attended by Universe Today.

The huge 64,000 square foot facility has sat dormant since the shuttles were retired following their final flight (STS-135) in July 2011 and which was commanded by Chris Ferguson, who now serves as director of Boeing’s Crew and Mission Operations.

Ferguson and the Boeing team are determined to get Americans back into space from American soil with American rockets.

Read my exclusive, in depth one-on-one interviews with Chris Ferguson – America’s last shuttle commander – about the CST-100; here and here.

Chris Ferguson, last Space Shuttle Atlantis commander, tests the Boeing CST-100 capsule which may fly US astronauts to the International Space Station in 2017. Ferguson is now Boeing’s director of Crew and Mission Operations for the Commercial Crew Program vying for NASA funding. Credit: NASA/Boeing

Boeing’s philosophy is to make the CST-100 a commercial endeavor, as simple and cost effective as possible in order to quickly kick start US human spaceflight efforts. It’s based on proven technologies drawing on Boeing’s 100 year heritage in aviation and space.

“The CST-100, it’s a simple ride up to and back from space,” Ferguson told me. “So it doesn’t need to be luxurious. It’s an ascent and reentry vehicle – and that’s all!”

So the CST-100 is basically a taxi up and a taxi down from LEO. NASA’s complementary human space flight program involving the Orion crew vehicle is designed for deep space exploration.

The vehicle includes five recliner seats, a hatch and windows, the pilots control console with several attached Samsung tablets for crew interfaces with wireless internet, a docking port to the ISS and ample space for 220 kilograms of cargo storage of an array of equipment, gear and science experiments depending on NASA’s allotment choices.

The interior features Boeing’s LED Sky Lighting with an adjustable blue hue based on its 787 Dreamliner airplanes to enhance the ambience for the crew.

Boeing CST-100 crew capsule will carry five person crews to the ISS. Credit: Ken Kremer - kenkremer.com — Boeing CST-100 crew capsule will carry five person crews to the ISS. Credit: Ken Kremer – kenkremer.com

The reusable capsule will launch atop a man rated United Launch Alliance (ULA) Atlas V rocket.

“The first unmanned orbital test flight is planned in January 2017… and may go to the station,” Ferguson told me during our exclusive interview about Boeing’s CST-100 plans.

Since 2010, NASA has spent over $1.5 billion on the commercial crew effort.

Boeing has received the largest share of funding in the current CCiCAP phase amounting to about $480 million. SpaceX received $460 million for the Dragon V2 and Sierra Nevada Corp. (SNC) has received a half award of $227.5 million for the Dream Chaser mini-shuttle.

SNC will be the next company to complete all of NASA’s milestones this Fall, SNC VP Mark Sirangelo told me in an exclusive interview. SpaceX will be the final company finishing its milestones sometime in 2015.

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

Dream Chaser commercial crew vehicle built by Sierra Nevada Corp docks at 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

January 28, 2014December 23, 2015 by Nancy Atkinson

Video: How the Dream Chaser Was Built

The Dream Chaser space plane atop a United Launch Alliance Atlas V rocket. Image Credit: SNC

The origins of Sierra Nevada Corporation’s Dream Chaser go back over 50 years to the US Air Force’s and NASA’s research into lifting body concepts and the X-20 Dyna-Soar, so this winged, lifting-body spacecraft is one of the tested and reviewed vehicles ever. This new video about the vehicle provides a summary of the development, testing and manufacturing of the Dream Chaser, which will launch on its first orbital testflight in 2016 as part of NASA’s Commercial Crew Program to provide crew and cargo transportation to the International Space Station.

The Dream Chaser is a classic case of not reinventing the wheel.

“A lot of people told us we needed to get a clear sheet of paper and start all over again,” said Mark Sirangelo, the head of Sierra Nevada Space Systems. “We decided we didn’t want to do that. We wanted to build on something.”

The Dream Chaser — which looks like a mini space shuttle — is the only reusable, lifting-body, human-rated spacecraft capable of landing on a commercial runway. It is about 9 meters long (29.5 feet) with a wingspan of 7 meters (22.9 feet).

Read more about the history of the Dream Chaser design here or at the Sierra Nevada website.

October 29, 2013December 23, 2015 by Ken Kremer

Damaged Dream Chaser Can be Fixed and Program to Move Forward with Flight Tests – Video

Left landing gear failed to deploy as private Dream Chaser spaceplane approaches runway at Edwards Air Force Base, Ca. during first free flight landing test on Oct. 26, 2103. Credit: Sierra Nevada Corp. See video below

Left landing gear tire visibly failed to deploy as private Dream Chaser spaceplane approaches runway at Edwards Air Force Base, Ca. during first free flight landing test on Oct. 26, 2013 – in this screenshot. Credit: Sierra Nevada Corp.
Watch approach and landing test video below[/caption]

The privately built Dream Chaser ‘space taxi’ that was damaged after landing during its otherwise successful first ever free-flight glide test on Saturday, Oct 26, is repairable and the program will live on to see another day, says the developer Sierra Nevada Corp., (SNC).

The Dream Chaser engineering test vehicle skidded off the runway and landed sideways when its left landing gear failed to deploy at the last second during touchdown on runway 22L at Edwards Air Force Base, Calif., said Mark Sirangelo, corporate vice president for SNC Space Systems, at a media teleconference.

The primary goal of the Oct. 26 drop test was to see whether the Dream Chaser mini-shuttle would successfully fly free after being released by an Erickson Air-Crane from an altitude of over 12,000 feet and glide autonomously for about a minute to a touchdown on the Mojave desert landing strip.

“We had a very successful day with an unfortunate anomaly at the end of the day on one of the landing gears,” said Sirangelo.

Dream Chaser is one of three private sector manned spaceships being developed with funding from NASA’s commercial crew program known as Commercial Crew Integrated Capability (CCiCap) initiative to develop a next-generation crew transportation vehicle to ferry astronauts to and from the International Space Station – totally lost following the space shuttle retirement.

The unmanned approach and landing test (ALT) accomplished 99% of its objectives and was only marred by the mechanical failure of the left tire to drop down and deploy for a safe and smooth rollout.

SNC released a short 1 minute video of the test flight – see below – showing the helicopter drop, dive, glide and flare to touchdown. The failure of the landing gear to drop is clearly seen. But the video cuts away just prior to touchdown and does not show the aftermath of the skid or damage to the vehicle.

“The Dream Chaser spacecraft automated flight control system gently steered the vehicle to its intended glide slope. The vehicle adhered to the design flight trajectory throughout the flight profile. Less than a minute later, Dream Chaser smoothly flared and touched down on Edwards Air Force Base’s Runway 22L right on centerline,” said SNC in a statement with the video.

The vehicle is “repairable and flyable again,” Sirangelo noted.

More good news is that the ships interior was not damaged and the exterior can be fixed.

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.

Since there was no pilot in the cockpit no one was injured. That also meant that no evasive action could be taken to drop the gear.

“We don’t think it’s actually going to set us back,” Sirangelo noted. “In some interesting way, it might actually accelerate it.

NASA’s commercial crew initiative aims at restoring America’s manned spaceflight access to low Earth orbit and the International Space Station (ISS) – perhaps by 2017 – following the forced shutdown of the Space Shuttle program in 2011.

Until an American commercial space taxi is ready for liftoff, NASA is completely dependent on the Russian Soyuz capsule for astronaut rides to the ISS at a cost of roughly $70 million per seat.

Because Congress continues to significantly cut NASA’s budget further delays can be expected – inevitably meaning more payments to Russia and no savings for the American tax payer.

SNC was awarded $227.5 million in the current round of NASA funding and must successfully complete specified milestones, including up to five ALT drop tests to check the aerodynamic handling in order to receive payment.

This particular vehicle had been intended to fly two test flights. Further drop tests were planned with a new test vehicle to be constructed.

The way forward is being evaluated.

“We don’t think there is going to be any significant delay to the program as a result of this. This was meant to be a test vehicle with a limited number of flights,” Sirangelo said.

SNC and NASA have assembled a team to investigate the cause of the anomaly.

“SNC cannot release any further video at this time,” said SNC.

Dream Chaser is a reusable mini shuttle that launches from the Florida Space Coast atop a United Launch Alliance Atlas V rocket and lands on the shuttle landing facility (SLF) runway at the Kennedy Space Center, like the space shuttle.

Ken Kremer

October 27, 2013December 23, 2015 by Ken Kremer

Dream Chaser spaceship test article damaged during 1st Free-Flight Drop Test

Sierra Nevada Dream Chaser engineering test article in flight during a captive-carry test this past summer. Credit: NASA

The engineering test article of the commercial Dream Chaser spaceship being developed by Sierra Nevada Corp (SNC) suffered some significant damage during its critical 1st ever approach-and-landing (ALT) drop test on Saturday, Oct. 26, in California due to an unspecified type of malfunction with the deployment of the left landing gear.

The Dream Chaser mini-shuttle suffered “an anomaly as it touched down on the Runway 22L at Edwards Air Force Base, Calif.,” according to a post-test statement from NASA.

A report at NASA Spaceflight.com indicated that the Dream Chaser “flipped over on the runway” after touchdown.

The full extent of damage to the winged vehicle or whether it can be repaired and reflown is not known at this time. No photos or details explaining the damage have yet emerged – beyond brief press releases issued by SNC and NASA.

The performance of the vehicles’ nose skid, brakes, tires and other flight systems is being tested to prove that it can safely land an astronaut crew returning from the space station after surviving the searing heat of re-entry from Earth orbit.

This initial atmospheric drop test was conducted in an automated mode. There was no pilot on board and no one was hurt on the ground.

“No personnel were injured. Damage to property is being assessed,” said NASA. “Edwards Air Force Base emergency personnel responded to scene as a precaution.

“Support personnel are preparing the vehicle for transport to a hangar.”

Dream Chaser on the runway with landing gear deployed. Credit: NASA

The NASA seed money aims at restoring America’s manned spaceflight access to low Earth orbit and the International Space Station (ISS) – perhaps by 2017 – following the forced shutdown of the Space Shuttle program in 2011.

Until one of the American commercial space taxis is ready for liftoff, NASA is completely dependent on the Russian Soyuz capsule for astronaut rides to the ISS at a cost of roughly $70 million per seat.

SNC was awarded $227.5 million in the current round of NASA funding and must complete specified milestones including up to five ALT drop tests to check the aerodynamic handling.

To date this test vehicle has successfully accomplished a series of runway tow and airborne captive carry tests.

Development of crew versions of the SpaceX Dragon and Boeing CST-100 capsules are also being funded by NASA’s commercial crew program office.

Dream Chaser can carry a crew of up to seven and is the only reusable, lifting body shuttle type vehicle with runway landing capability among the three competitors.

During Saturday’s test, SNC was performing the first in a series of free-flight approach-and-landing tests with the Dream Chaser prototype test vehicle known as the ETA.

The prototype spaceship was released as planned from its carrier aircraft, an Erickson Air-Crane helicopter, at approximately 11:10 a.m. Pacific Standard Time (2:10 p.m. EDT), said SNC in a statement.

Dream Chaser awaits launch atop United Launch Alliance Atlas V rocket

The post release flare and touchdown appeared normal at first until the left landing gear deployment failed at some point after runway touchdown.

“Following release, the Dream Chaser spacecraft automated flight control system gently steered the vehicle to its intended glide slope. The vehicle adhered to the design flight trajectory throughout the flight profile. Less than a minute later, Dream Chaser smoothly flared and touched down on Edwards Air Force Base’s Runway 22L right on centerline,” according to the SNC press release.

SNC went on to say that reviews are in progress to determine the cause of the landing gear failure.

“While there was an anomaly with the left landing gear deployment, the high-quality flight and telemetry data throughout all phases of the approach-and-landing test will allow SNC teams to continue to refine their spacecraft design. SNC and NASA Dryden are currently reviewing the data. As with any space flight test program, there will be anomalies that we can learn from, allowing us to improve our vehicle and accelerate our rate of progress.”

The engineering test article (ETA) is a full sized vehicle.

“It’s not outfitted for orbital flight. It is outfitted for atmospheric flight tests,” said Marc Sirangelo, Sierra Nevada Corp. vice president and SNC Space Systems chairman told Universe Today previously.

“The best analogy is it’s very similar to what NASA did in the shuttle program with the Enterprise, creating a vehicle that would allow it to do significant flights whose design then would filter into the final vehicle for orbital flight,” Sirangelo told me.

We’ll provide further details as they become known.

Ken Kremer

August 16, 2013December 23, 2015 by Elizabeth Howell

Dream Chaser Prepares For Flight After Crucial Ground Tests

Sierra Nevada Corp.'s Dream Chaser just before tow tests at NASA's Dryden Flight Research Center on Aug. 2, 2013. Credit: NASA/Ken Ulbrich

Another kind of commercial spacecraft is almost ready to take flight, its backers say.

Sierra Nevada Corp.’s Dream Chaser recently finished four low- and high-speed ground tests at NASA’s Dryden Flight Research Center in Edwards, Calif., the same spot where the shuttle was put through its paces in early tests of its program. Several shuttle flights also landed at Dryden.

The Dream Chaser tow-and-release tests, which took place at speeds ranging from 10 to 60 miles per hour (16 to 96 kilometers per hour), examined items such as the flight computer, how the guidance performed, steering parameters and the flight surfaces.

“Watching Dream Chaser undergo tow testing on the same runway where we landed several space shuttle orbiters brings a great amount of pride to our Dream Chaser team,” stated Steve Lindsey, SNC’s Space Systems senior director of programs, who is also a former NASA astronaut.

“We are another step closer to restoring America’s capability to return U.S. astronauts to the International Space Station.”

The next step will be an approach and landing test, which should take place sometime in the third quarter of 2013.

SNC is one of three companies receiving money from NASA under the agency’s commercial crew program, whose goal is to move astronaut launches back to American soil in the next few years. The other competitors are SpaceX and Boeing. You can read a more in-depth look at their proposals here.

Source: Sierra Nevada Corp.