Aircraft thrust control scheme for terrain following system

Details Aircraft thrust control scheme for terrain following system Aircraft thrust control scheme for terrain following system

1982-01-13

1984-08-21

Smith, Jerry

Boots, shoes, and leggings

364440, 343 7TA, 340967, 244182, G05D 108, G06G 778

Patent

active

044674295

ABSTRACT:
This system permits speed variation within certain constraints. The minimum speed is derived from a stall avoidance or acceleration margin condition and the maximum speed may be the lower limit of the transonic region or other design limit. Assuming the throttle is set at or near a trim value, adjustments need only be made if the terrain following flight path is tending to drive the speed to one of the two velocity extremes. Velocity predictions are based on predicted kinetic energy being equal to the difference between the current kinetic energy and the potential energy to the profile extreme. The throttle is adjusted when the predicted velocity is outside the limits to add or remove the required amount of energy.

REFERENCES:
patent: 3404398 (1968-10-01), Hoban
patent: 3530465 (1970-09-01), Treffeisen
patent: 3908934 (1975-09-01), Schloeman
patent: 4041341 (1977-08-01), Hart
patent: 4058710 (1977-11-01), Altmann
patent: 4067520 (1978-01-01), Hill
patent: 4093158 (1978-06-01), Clews et al.
patent: 4114842 (1978-09-01), Hofforbes et al.
patent: 4224669 (1980-09-01), Brame

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