Boots – shoes – and leggings
Patent
1987-09-03
1990-03-27
LaRoche, Eugene R.
Boots, shoes, and leggings
36443107, 60 39281, 244182, G06F 1546
Patent
active
049126423
ABSTRACT:
An integrated engine control-autothrottle control system for controlling changes in the thrust of a jet aircraft engine during transients (i.e., changes in speed) in a manner that prevents throttle lead and overshoot (i.e., exceeds the response capability of the engine) is disclosed. The system uses the engine control to continuously monitor current fuel flow (WF), burner pressure (PB), high rotor speed (N2) and engine thrust (EPR), manipulates the signals and produces limiting fuel flow transient error (WFPBERR) and rotor speed transient error (N2DOTERR) signals for both acceleration and deceleration. The lower parameter transient error signal is selected as the controlling limit signal during acceleration and the higher parameter transient error signal is selected as the controlling limit signal during deceleration. The controlling limit signals are used to produce limiting throttle lever angle rate of change signals--+TRADOT for acceleration and -TRADOT for deceleration. The throttle lever angle rate of change signals denote the maximum rate at which the throttle can be advanced (+TRADOT) or retarded (-TRADOT) without exceeding the response capabilities of the engines. The TRADOT signals are transmitted to the autothrottle and used to limit fuel flow changes so that the response capability of the aircraft is not exceeded.
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Doherty John L.
Larsen Hals N.
Ham Seung
LaRoche Eugene R.
The Boeing Company
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