Indicator drive circuit for realizing five attack angle states of airplane

Abstract

The invention particularly relates to an indicator drive circuit structure for realizing five attack angle states of an airplane. The structure comprises an indicating lamp L1 (identification symbol:'V'), an indicating lamp L2 (identification symbol: '('), an indicating lamp L3 (identification symbol: ')') and an indicating lamp L4 (identification symbol: 'inverted V'). The brightness of the indicating lamp L1, the indicating lamp L2, the indicating lamp L3 and the indicating lamp L4 is logically controlled respectively by using different combination modes of the attack angle large signal A,the attack angle normal signal B and the attack angle small signal C, so that five states of large attack angle, relatively large attack angle, normal attack angle, relatively small attack angle and small attack angle are realized. The beneficial effects of the invention are that the whole circuit achieves five indication states, provides more accurate attack angle information for a pilot, adjuststhe attack angle in time in the take-off and landing and flight processes, guarantees the normal operation of take-off and landing, avoids the stall risk of a critical attack angle, and guarantees the stable flight.

Description

technical field [0001] The invention relates to the field of aircraft lighting, and relates to a driving circuit for realizing indications of five angles of attack states of an aircraft. Background technique [0002] The angle-of-attack indicator is a kind of cockpit instrument that indicates the angle of attack of the aircraft. It can provide a visual aid for the pilot to prevent the aircraft from malfunctioning during critical stages of flight. The angle-of-attack indicator can help avoid stalls due to stall Can occur at any speed, and stall judgment based on speed alone is not reliable. For a certain aircraft configuration, the aircraft always stalls at the critical angle of attack. Without an AOA indicator, AOA is difficult for the pilot to perceive. The angle of attack indicator can be linked to the airspeed and stall warning systems to provide an alert for the pilot's attention. [0003] See figure 1 , most of the existing angle-of-attack indicators have three indi...

AI Technical Summary

Problems solved by technology

Single receiving method and display status

Images