Preliminary Evaluation of the Flat Trajectory Projectile (FTP) Concept.
ARMY MISSILE RESEARCH AND DEVELOPMENT COMMAND REDSTONE ARSENAL AL TECHNOLOGY LAB
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As originally proposed by the NAVY, this lifting surface would be roll stabilized via a single degree of freedom gryo to keep the lift force in the vertical plane. This unit would attach to a projectile without altering the design, and this would compromise a simple retrofit. The resulting projectile trajectories would be essentially flat less than 1 ft for approximately 250 meters, thereby eliminating any range-dependent sight setting changes as currently required. Author
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