Helicopter integrated fire and flight control having constraint

Details Helicopter integrated fire and flight control having constraint Helicopter integrated fire and flight control having constraint

1992-05-19

1994-05-10

Peters, Jr., Joseph F.

Aeronautics and astronautics

Aircraft, heavier-than-air

Helicopter or auto-rotating wing sustained, i.e., gyroplanes

244 75R, 89 4121, 364423, B64C 1134

Patent

active

053101367

ABSTRACT:
During operation of an integrated fire and flight control (IFFC) system in a coupled aiming mode, the occurrence of a weapon (172), weapon mount (145) or sensor (146) reaching a constraint limit (210) indices a fade-in of a constraint limiting axis command signal (140) for a respective attitude axis as the aircraft attitude reference, replacing the flight control system attitude feedback error signal (111) for the respective attitude axis. The constraint limiting axis command signals provide the aircraft attitude reference only while the pilot manually depresses and holds an enable switch (920). The pilot command stick input (90) remains the primary input to the IFFC system to thereby provide override capability for pilot command maneuvers.

REFERENCES:
patent: 2737652 (1956-03-01), White et al.
patent: 3383987 (1968-05-01), MacMillan
patent: 4382283 (1983-05-01), Clelford et al.
patent: 4528891 (1985-07-01), Branello et al.
McDonnell Douglas Helicopter Company, Integrated Air-to-Air Weapon (INTAAW) Evaluation System Definition Report, Final Issue, Jan. 23, 1990, pp. 6-1 to 6-31.
"A Simulator Investigation of Parameters Affecting Helicopter Handling Qualities in Air Combat (HAC II)", pp. 1-18, by Michael S. Lewis and M. Hossein Mansur, Aerospace Engineers, Ames Research Center; and Robert T. M. Chen, NASA Ames Research Center.
IFEE AES Systems Magazine, Jan. 1992, "Integrated Flight/Fire Control for Attack Helicopters", pp. 17-23, by Stephen Osder of McDonnell Douglas Helicopter Company.
Chief Engineer, vol. 6, No. 4, Jul.-Aug. 1983, "Design and Analysis of a Digitally Controlled Integrated Flight/Fire Control System", pp. 251-257, by John H. Blakelock, Applications Research Corporation.

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