SpaceDev believes its SpaceDev Dream Chaser can meet the needs of the rapidly emerging commercial space tourism market, and NASA needs for routine, safe and affordable crew access to the International Space Station. SpaceDev believes SpaceDev Dream Chaser will be much faster and far less expensive to develop than a new crew launch vehicle as proposed by large aerospace companies.

The design concept for the SpaceDev Dream Chaser, which is the same size but lighter than the ten-passenger NASA HL-20 vehicle, is also suitable for safe, affordable sub-orbital space tourism applications. The long-term SpaceDev Dream Chaser design plan includes a scaled-up version of SpaceDev's non-explosive, rubber-burning hybrid rocket motors.

SpaceDev's proprietary hybrid rocket motor technology successfully powered Paul Allen's SpaceShipOne on its historic X Prize winning flights to space last year. To lower risk and cost, the SpaceDev Dream Chaser system is anticipated to combine existing and proven designs and technologies.

"When our focus was on supporting the development of suborbital space tourism two years ago, SpaceDev engineers selected the NASA X-34 vehicle design which was good for suborbital," said Jim Benson, SpaceDev's founding chairman and chief executive.

"Since then, national focus has changed to a Shuttle replacement, and we believe that our new SpaceDev Dream Chaser vehicle concept is ideal for both suborbital and orbital applications. However, funding is needed if we are going to be able to pursue this exciting new concept."

In 2004, SpaceDev signed a Space Act agreement with NASA Ames Research Center to explore various designs for safe, affordable sub-orbital and orbital human space flight. SpaceDev's initial in-house study analyzed and compared various higher performance hybrid-based propulsion modules and passenger vehicle designs.

Detailed, comparative launch trajectory and re-entry analyses were performed in conjunction with the NASA Ames thermal protection team in order to evaluate the performance requirements for the propulsion modules, and to define a thermal protection system that would provide the cost, performance and safety necessary for routine passenger flights to low orbit and back.

"Recent studies have shown great potential for a commercial suborbital space tourism market, and we believe SpaceDev Dream Chaser is the best solution," said Benson.

"NASA Administrator Mike Griffin has stated a desire to purchase crew and cargo services from the private sector, and we believe that we can provide safer and less expensive human transport to low earth orbit and to the Space Station than current multi-billion dollar development projects. By aiming for safe and affordable orbital operations, we get suborbital capabilities for 'free'."

A predecessor to the NASA HL-20 design reached orbit and re-entered safely. The SpaceDev Dream Chaser uses the same outer mold line (shape) as the HL-20 Personnel Launch System, but would fly six passengers instead of the HL-20 ten passengers, thus saving weight, which may improve handling.

SpaceDev personnel flew an HL-20 simulation in the Vertical Motion Simulator at NASA Ames, and found that landing the SpaceDev Dream Chaser may be very similar to landing the Shuttle.

The suborbital SpaceDev Dream Chaser is envisioned to use internal hybrid rocket motors and is designed to launch vertically from a simple launch pad at any commercial spaceport. The orbital version of SpaceDev Dream Chaser is proposed to launch on the side of three large hybrid boosters. Unlike the Shuttle, the orbital SpaceDev Dream Chaser system is not anticipated to use cryogenic propellants, thus it is anticipated that no foam insulation and no ice will hit the SpaceDev Dream Chaser vehicle.

SpaceDev selection criteria included basing its human space transport system on existing technology, the HL-20, and on scaled-up hybrid rocket motors. SpaceDev believes this combination should save time and money, and could result in a safe and affordable vehicle.

Subject to the availability of adequate funding, sources for which have not yet been identified, the initial SpaceDev Dream Chaser development plan includes milestones for multiple manned sub-orbital test flights by 2008, and manned test flights to orbit by 2010.

SpaceDev believes that its corporate culture and proven track record of rapidly and successfully developing innovative space technologies could provide the right environment in which SpaceDev could design and develop a complete human space flight system for a fraction of the cost of traditional Shuttle replacement programs.

Related Links
SpaceDaily
Search SpaceDaily
Subscribe To SpaceDaily Express

Thanks for being here; We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain. With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords. Our news coverage takes time and effort to publish 365 days a year. If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.
SpaceDaily Contributor $5 Billed Once credit card or paypal		SpaceDaily Monthly Supporter $5 Billed Monthly paypal only