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 .

Jul 8, 2021 · X-33 was the sub-scale prototype version of the Single Stage to Orbit Venture Star. It was wedge shaped X-33. It was developed jointly between NASA and Lockheed Martin Skunk Works of Palmdale, California. X-33 was cancelled in 2001.

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May 3, 2023 · Lockheed Martin's X-33 was a technology demonstrator of the VentureStar orbital spaceplane funded by NASA in the 1990s. Part of the Space Launch Initiative, the X-33's ultimate goal was to prove the feasibility of a completely reusable …

Feb 17, 2016 · The X-33, a half-scale vehicle, was expected to feature a lifting-body shape, a new "aerospike" rocket engine, and a rugged metallic thermal protection system. NASA selected Lockheed Martin to design, build, and fly the X-33 Advanced Technology Demonstrator test vehicle between March and December 1999.

Feb 28, 2014 · It awarded a contract to Lockheed Martin to build and fly an uncrewed technology demonstrator. Much of the vehicle was entirely new, including the linear aerospace rocket motor and the composite cryogenic propellant tanks. The leap exceeded what existing and developing technology could support.

Sep 26, 2009 · The most significant project under the umbrella of the Space Launch Initiative (SLI) was the Lockheed Martin X-33 announced in 1996. The ultimate goal of the X-33 was to develop a completely reusable single-stage-to-orbit (SSTO) launch vehicle to replace the aging Space Shuttle by about 2010.

Feb 1, 2014 · The X-33 design was based on a lifting body shape with two revolutionary “linear aerospike” rocket engines and a rugged metallic thermal protection system. The vehicle also was to have had lightweight components and fuel tanks built to conform to the vehicle’s outer shape.

Jan 1, 1999 · The X-33 avionics provides autonomous control of die vehicle throughout takeoff, ascent, descent, approach, landing, rollout, and vehicle safing. During flight the avionics provides communication to the range through uplinked commands and downlinked telemetry.

NASA-sponsored suborbital unmanned prototype for a single-stage-to-orbit rocketplane. The Lockheed Martin vehicle would have used a linear aerospike engine, metallic insulation, and other features similar to their Starclipper shuttle proposal of 1971.