On June 20, 2007 the company unveiled a model of the space jet, a one-stage sub-orbital hybrid craft, utilising both jet and rocket engines.
Project Highwater was an experiment carried out as part of two of the test flights of NASA's Saturn I launch vehicle (using battleship upper stages), successfully launched into a sub-orbital trajectory from Cape Canaveral, Florida.
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America's Space Prize is a US$50 million orbital spaceflight competition established and funded by hotel entrepreneur Robert Bigelow.
Mercury-Redstone 2, A sub-orbital spaceflight, carrying Ham (A Chimpanzee).
Mercury-Redstone 3, The first American manned (sub-orbital) spaceflight, made by astronaut Alan Shepard.
Mercury-Redstone 4, a manned sub-orbital spaceflight made by astronaut Gus Grissom.