DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click HERE
to register or log in.
THE DYNAMICS OF SPINNING BODIES AT LARGE ANGLE OF ATTACK
ADVANCED TECHNOLOGY CORP SANTA BARBARA CALIF
Pagination or Media Count:
A theoretical study was conducted to determine the motion of nonstabilized rolling and spinning bodies at very large angles of attack. From numerical integration of the non-line r sixdegrees-of-fre dom equations of motion it was found that a rolling cone-cylinder body couldACHIEVE A SELF-SUSTAINED SPINNING MOTION FOR LARGE RANGES OF BOTH CENTER-OF-GRAVITY POSITION AND Reynolds number. The stability of the autorotative motion was investigated using linear theory. For configuratio s representative of current small missiles descent velocities as low as approximately 100 ftsec were achieved with spinning motion. Stable spins could be ini i ted from small angle of attack either by supplying a pitch impulse or effecting aerodynamic destabilization. Author
APPROVED FOR PUBLIC RELEASE