HYBRID SPIN/FIN STABILIZED PROJECTILE

摘要

A hybrid spin/fin stabilized projectile (10). The novel projectile (10) includes a body (12), a first mechanism (18) for spin stabilizing the body (12) during a first mode, and a second mechanism (20) for fin stabilizing the body (12) during a second mode. In an illustrative embodiment, the projectile (10) includes a rifling band (18) adapted to engage with rifling in a gun to impart a spin rate compatible with spin stabilization to the projectile (10), and a plurality of folding fins (20) attached to an aft end of the body (12). A fin locking mechanism (32) locks the fins (20) in an undeployed position during the first mode and deploys the fins (20) to switch the projectile (10) to fin stabilization during the second mode. The projectile (10) also includes a mechanism (26) for reducing the spin of the projectile (10) to a rate compatible with guided flight.