ISProgram
SketchUp Orbinaut
SpaceX planning propulsive Dragon landing tests...
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2.1.1 DragonFly RLV
The DragonFly RLV is the Dragon capsule with an integrated trunk (which may or may not be attached during a DragonFly operation) and up to four steel landing legs. The Dragon capsule primary structure consists of a welded aluminum pressure vessel, primary heat shield support structure, back shell thermal protection system support structure, and a nosecone. This structure supports secondary structures including eight SuperDraco engines (two in each of the four modules [quadrants]), propellant tanks, pressurant tanks, parachute system, and necessary avionics. The propulsion system includes four self‐contained quadrants with independent sets of propellant tanks for system redundancy. The SuperDraco engine uses a fuel‐centered injector to provide appropriate performance for the application. It is also designed to seal off both fuel and oxidizer from the combustion chamber, enabling operation with fast shut‐off and limited propellant “dribble” volumes.
The DragonFly RLV weighs approximately 14,000 pounds (lbs) un‐fueled, with a height of 17 ft and a base width of 13 ft. Each pair of SuperDraco engines (eight total engines) are mounted to a monolithic aluminum bracket. This bracket is connected to the pressure vessel with three mounts.
Draft Environmental Assessment for Issuing an Experimental Permit to SpaceX for Operation of the Dragon Fly Vehicle at the McGregor Test Site, Texas, May 2014
http://www.faa.gov/about/office_org.../media/20140513_DragonFly_DraftEA(Public).pdf
http://www.faa.gov/about/office_org/headquarters_offices/ast/environmental/review/permits/
A equivalent NSF thread...