Method and apparatus for obtaining accurately the angle of attac

Details Method and apparatus for obtaining accurately the angle of attac Method and apparatus for obtaining accurately the angle of attac

1974-06-03

1976-01-06

Morrison, Malcolm A.

Registers

Transfer mechanism

Traveling pawl

73178R, 23515026, 244 77D, G06G 778

Patent

active

039306100

ABSTRACT:
This invention relates to a method and apparatus for obtaining the angle of attack of an aircraft developed as a result of an appropriate processing of the vertical speed, the airspeed, and the pitch attitude of the aircraft. The latter involves resolving the inverse sine of the vertical speed signal over the airspeed signal, and subsequently differentially combining the end product of the inverse sine computation and the chord line angle signal. The air speed signal is corrected by a corrective network which receives a feedback signal proportional to the angle of attack as well as a signal proportional to drift angle.

REFERENCES:
patent: 3091962 (1963-06-01), Corson et al.
patent: 3398267 (1968-08-01), Hattendorf
patent: 3654443 (1972-04-01), Dendy et al.
patent: 3814912 (1974-06-01), Manke et al.

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