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Project HARP, short for ''High Altitude Research Project'', was a joint project of the United States Department Of Defense and Canada 's Department Of National Defence created with the goal of studying Ballistics of Re-entry Vehicle s at low cost; whereas most such projects used expensive (and failure-prone) Rocket s, HARP used a very large Gun to fire the models to high Altitude s and Speed s. Started in 1961 , it was created largely due to lobbying from Gerald Bull , a controversial but highly successful Ballistics Engineer who went on to head the project. His ultimate goal was to fire a payload into space from a gun, and many have suggested that the ballistics study was offered up simply to gain funding. The project received just over 10 million dollars during its lifetime. The project was based on a flight range in Barbados , from which Shell s were fired eastward toward the Atlantic Ocean . Using an old U.S. Navy 16 inch (406 mm) 50 Caliber gun (20 m), later extended to 100 calibers (40 m), the team was able to fire a 180 Kilogram slug at 3600 Meters Per Second , reaching an altitude of 180 kilometers. While the speed was not nearly enough to reach orbit, it was a major achievement at much lower cost than most ballistic missile programs. The program was cancelled shortly after this. Most of the criticism was focused upon Bull and whether a ballistically-fired Payload could ever reach orbit, although the politics of the Vietnam War and soured Canada/U.S. relations played their role as well. While it is questionable whether Projectile s could ever be directly fired as a single stage from Earth without the use of exotic materials in construction, HARP demonstrated an efficient way to launch a projectile part of the way. Additionally, it showed that Electronics could survive such a launch, making it possible that a Sabot -fired rocket could launch once it reaches its peak altitude, and continue the rest of the way into orbit. A second incarnation of the HARP project, Project Babylon , also conducted by Gerald Bull , was done in Iraq under the patronage of Saddam Hussein . The March 1990 assassination of Bull (allegedly at the hands of the Mossad ) in his Brussels apartment, and the 1991 Gulf War ended the project partway through development. MARTLET PROJECTILES There were several models of test projectile fired or designed during Project HARP.
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