Accession Number : ADP005715

Title :   An Investigation of Steep Descent Guidance for Terminally-Guided Sub-Munitions,

Corporate Author : DEFENCE RESEARCH ESTABLISHMENT VALCARTIER (QUEBEC)

Personal Author(s) : Trottier, G.

Report Date : DEC 1987

Pagination or Media Count : 16

Abstract : The lateral acceleration requirement of a 'hit-to-kill' terminally-guided submunition (TGSM) aimed at hitting tanks near the top is examined. An analytic development of proportional navigation against stationary targets shows that a TGSM flying level at 150 m above the ground can hit a target 150 m in front of it with near vertical impact and without acceleration saturation if it can pull an initial 13.6 g. With acceleration saturation, a hit is theoretically possible with 6.8 g. TGSM configurations capable of hitting stationary and moving targets are then defined and tested with a nonlinear 6-DOF computer simulation. The footprint of a selected configuration is provided. It is observed that the 10-g configuration is sufficient to hit most stationary and moving tanks likely to be found on the battlefield with impact angles above 60 deg and reasonable angles of attack.

Descriptors :   *TERMINAL GUIDANCE, *SUBMUNITIONS, ANTITANK AMMUNITION, ANGLE OF ATTACK, DESCENT TRAJECTORIES, ACCELERATION, MOVING TARGETS, SURFACE TARGETS, STATIONARY, TARGET ANGLE, HIGH ANGLES, TERMINAL HOMING, KILL PROBABILITIES, VERTICAL ORIENTATION, SATURATION, AIR LAUNCHED, COMPUTERIZED SIMULATION, CANADA.

Subject Categories : Air Navigation and Guidance
      Ballistics

Distribution Statement : APPROVED FOR PUBLIC RELEASE