초록 ▼

A system for displaying to the pilot an indication to enable him to fly to a desired air speed and angle of attack, especially on takeoff. An artificial angle of attack error signal is generated from actual and desired air speeds and corrected by adding to it a differentiated pitch signal. The resul

A system for displaying to the pilot an indication to enable him to fly to a desired air speed and angle of attack, especially on takeoff. An artificial angle of attack error signal is generated from actual and desired air speeds and corrected by adding to it a differentiated pitch signal. The resultant calculated angle of attack error is displayed to the pilot unless flying to that indication would result in exceeding the actual maximum or minimum angle of attack limits, in which case an indication based on the actual exceeded limit is displayed.

대표청구항 ▼

Apparatus for generating an angle of attack (alpha) error signal comprising: means for generating a first signal proportional to a difference between a minimum angle of attack (alpha) and an actual alpha, means for generating a second signal proportional to a difference between a maximum alpha and a

Apparatus for generating an angle of attack (alpha) error signal comprising: means for generating a first signal proportional to a difference between a minimum angle of attack (alpha) and an actual alpha, means for generating a second signal proportional to a difference between a maximum alpha and an actual alpha, means for generating a third signal proportional to a difference between actual and reference aircraft speeds, and selector means for transmitting as an output a. the lower of said first and third signals when either represents an alpha less than minimum alpha, b. the higher of said second and third signals when either represents an alpha greater than maximum alpha, or said third means at all other times. The method of generating an aircraft angle of attack (alpha) error signal, comprising: generating a first signal proportional to the difference between actual and minimum alpha, generating a second signal proportional to the difference between actual and maximum alpha, generating a third signal proportional to the difference between actual and reference air speeds, and selecting for output as an alpha error signal a. the lower of said first and third signals when either represents an alpha smaller than minimum alpha, b. the higher of said second and third signal when either represents an alpha greater than maximum alpha, or c. said third signal at all other times.