Accession Number : ADP005868

Title :   Alternative Polar Homing Strategies,

Corporate Author : BRITISH AEROSPACE PLC HATFIELD (UNITED KINGDOM)

Personal Author(s) : Gate, M. S. ; Randall, R. S.

Report Date : MAR 1989

Pagination or Media Count : 14

Abstract : The coupled lateral and roll requirements are considered for a 'twist-to-track' missile which is constrained by the seeker to maintain the sight line at an approximately fixed polar angle from the body. Two alternative approaches, one based on roll profile optimisation and the other on adopting a non-cruciform missile configuration, are described. The polar homing problems addressed here are those which arise when for some reason we wish to design a missile system with a seeker which has limited rollwise field of view. While it is possible to design a system in which the missile spins continuously and the guidance is designed to operate with only intermittent looks at the target, the concern here is with systems in which the missile is roll controlled so as to follow the target throughout. Such systems have been termed 'Twist-to-Track' or TTT. Guided missiles. (JES)

Descriptors :   *GUIDED MISSILES, *HOMING DEVICES, ANGLES, COUPLING(INTERACTION), HOMING, LINE OF SIGHT, POLAR REGIONS, PROBLEM SOLVING, REQUIREMENTS, ROLL, STRATEGY.

Subject Categories : Guided Missiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE