Universe Today
In 2015, Russian billionaire Yuri Milner established
Breakthrough Initiatives
, a non-profit organization dedicated to enhancing the search for extraterrestrial intelligence (SETI). In April of the following year, he and the organization be founded announced the creation of
Breakthrough Starshot
, a program to create a lightsail-driven "wafercraft" that would make the journey to the nearest star system – Proxima Centauri – within our lifetime.
In the latest development, on
Wednesday May 23rd
, Breakthrough Starshot held an "industry day" to outline their plans for developing the Starshot laser sail. During this event, the Starshot committee submitted a Request For Proposals (RFP) to potential bidders, outlining their specifications for the sail that will carry the wafercraft as it makes the journey to Proxima Centauri within our lifetimes.
As we have noted in
several
previous
articles
, Breakthrough Starshot calls for the creation of a gram-scale nanocraft being towed by a laser sail. This sail will be accelerated by an Earth-based laser array to a velocity of about 60,000 km/s (37,282 mps) - or 20% the speed of light (o.2
c
). This concept builds upon the idea of a solar sail, a spacecraft that relies on solar wind to push itself through space.
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An artist's illustration of a light-sail powered by a radio beam (red) generated on the surface of a planet. Credit: M. Weiss/CfA
[/caption]
At this speed, the nanocraft would be able to reach the closest star system to our own – Proxima Centauri, located 4.246 light-years away – in just 20 years time. Since its inception, the team behind Breakthrough Starshot has invested considerable time and energy addressing the conceptual and engineering challenges such a mission would entail. And with this latest briefing, they are now looking to move the project from concept to reality.
In addition to being the Frank B. Baird, Jr. Professor of Science at Harvard University, Abraham Loeb is also the Chair of the Breakthrough Starshot Advisory Committee. As he explained to Universe Today via email:
In addition to outlining BI's many efforts to find ETI - which include
Breakthrough Listen
,
Breakthrough Message
and
Breakthrough Watch
- the RFP focused on Starshot's Objectives. As was stated in the RFP:
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A phased laser array, perhaps in the high desert of Chile, propels sails on their journey. Credit: Breakthrough Initiatives
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As Loeb indicated, this RFP comes not long after another "industry day" that was related to the development of the technology of the laser - termed the "Photon Engine". In contrast, this particular RFP was dedicated to the design of the laser sail itself, which will carry the nanocraft to Proxima Centauri.
"The Industry Day was intended to inform potential partners about the project and request for proposals (RFP) associated with research on the sail materials and design," added Loeb. "Within the next few years we hope to demonstrate the feasibility of the required sail and laser technologies. The project will allocate funds to experimental teams who will conduct the related research and development work. "
The RFP also addressed Starshot's long-term goals and its schedule for research and development in the coming years. These include the investment in $100 million over the next five years to determine the feasibility of the laser and sail, to invest the value of the
European Extremely Large Telescope
(EELT) from year 6 to year 11 and build a low-power prototype for space testing, and invest the value of the
Large Hardon Collider
(LHC) over a 20 year period to develop the final spacecraft.
"The European Extremely Large Telescope (EELT) will cost on order of a billion [dollars] and the Large Hadron Collider cost was ten times higher,' said Loeb. "These projects were mentioned to calibrate the scale of the cost for the future phases in the Starshot project, where the second phase will involve producing a demo system and the final step will involve the complete launch system."
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Artist's impression of Proxima b, which was discovered using the Radial Velocity method. Credit: ESO/M. Kornmesser
[/caption]
The research and development schedule for the sail was also outlined, with three major phases identified over the next 5 years. Phase 1 (which was the subject of the RFP) would entail the development of concepts, models and subscale testing. Phase 2 would involve hardware validation in a laboratory setting, while Phase 3 would consist of field demonstrations.
With this latest "industry day" complete, Starshot is now open for submissions from industry partners looking to help them realize their vision. Step A proposals, which are to consist of a five-page summary, are due on June 22nd and will be assessed by Harry Atwater (the Chair of the Sail Subcommittee) as well as Kevin Parkin (head of Parkin Research), Jim Benford (muWave Sciences) and Pete Klupar (the Project Manager).
Step B proposals, which are to consist of a more detailed, fifteen-page summary, will be due on July 10th. From these, the finalists will be selected by Pete Worden, the Executive Director of Breakthrough Starshot. If all goes according to plan, the initiative hopes to launch the first lasersail-driven nanocraft in to Proxima Centauri in 30 years and see it arrive there in 50 years.
So if you're an aerospace engineer, or someone who happens to run a private aerospace firm, be sure to get your proposals ready! To learn more about Starshot, the
engineering challenges
they are addressing, and their
research
, follow the links provided to the BI page. To see the slides and charts from the RFP, check out Starshot's
Solicitations page
.
Further Reading: Centauri Dreams, Breakthrough Starshot
