U.S. Department of War no topic Update
U.S. Department of War sent this bulletin at 04/03/2013 07:30 AM EDT
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04/03/2013 06:09 AM CDT
One of the greatest challenges of the past half century for aerodynamics engineers has been how to increase the top speeds of aircraft that take off and land vertically without compromising the aircraft’s lift to power in hover or its efficiency during long-range flight. The versatility of helicopters and other vertical take-off and landing (VTOL) [...]
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