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The NASA X-43 was an experimental unmanned hypersonic aircraft with multiple ... Removing the need to carry oxygen significantly reduces the vehicle's size and weight.
Single-stage-to-orbit spaceplane [43] Canceled and never built. X-31: Rockwell-MBB DARPA, USAF, BdV: 1990 Thrust vectoring supermaneuverability [44] X-32A: Boeing USAF, USN, USMC, RAF: 2000 Joint Strike Fighter [45] X-32B: 2001 X-33: Lockheed Martin: NASA 2001 Half-scale reusable launch vehicle prototype. [46] Prototype never completed. X-34 ...
Thus with for example scramjet designs (e.g. X-43) the mass budgets do not seem to close for orbital launch. [citation needed] Similar issues occur with single-stage vehicles attempting to carry conventional jet engines to orbit—the weight of the jet engines is not compensated sufficiently by the reduction in propellant. [37]
The result was a program funded by NASA, ... A more modest hypersonic program culminated in the uncrewed X-43 "Hyper-X ... Gross weight: 300,000 lb (136,077 ...
The July 1944 unofficial record of the Me 163B V18 was officially surpassed in November 1947, when Chuck Yeager flew the Bell X-1 to 1,434 km/h (891 mph). The official speed record for a seaplane moved by piston engine is 709.209 km/h (440.682 mph), which attained on 24 October 1934, by Francesco Agello in the Macchi-Castoldi M.C.72 seaplane ...
The Lockheed Martin X-33 was a proposed uncrewed, sub-scale technology demonstrator suborbital spaceplane that was developed for a period in the 1990s. The X-33 was a technology demonstrator for the VentureStar orbital spaceplane, which was planned to be a next-generation, commercially operated reusable launch vehicle.
X-41 is the designation, initiated in 2003, for a still-classified United States military spaceplane. The X-41 is now part of the FALCON (Force Application and Launch from Continental United States) program sponsored by DARPA and NASA .
A scramjet (supersonic combustion ramjet) is a variant of a ramjet airbreathing jet engine in which combustion takes place in supersonic airflow.As in ramjets, [1] a scramjet relies on high vehicle speed to compress the incoming air forcefully before combustion (hence ramjet), but whereas a ramjet decelerates the air to subsonic velocities before combustion using shock cones, a scramjet has no ...