15. Flight Controls Flashcards
What happens to degree of aileron movement relative to control wheel movement when flaps are extended and why?
It increases- this helps maintain control effectiveness at slower speeds.
How is the trim tab in the left aileron operated?
By an electric motor mounted within aileron.
What is the purpose of the flap-elevator interconnect trim tab (located on the trailing edge of the right elevator)?
To minimize pronounced pitch changes
What number is used for the markings on the flap selector lever and flap position indicator?
Average flap range of all flaps- 0° to 37.5°
When does the upper stall vane become active?
When the flaps are extended beyond 12°
How are heaters controlled on lift detector vanes?
By the PITOT HEAT switch
What is the purpose of the metal stall bar installed on the left wing leading edge?
It disrupts airflow over a small area of the wing at high angles of attack to provide a clear warning of the impending stall
Geared tabs are mechanically deflected in what direction of surface movement and why?
Opposite direction- provides aerodynamic assistance to control surface movement in flight
How are flaps actuated?
Hydraulically by an actuator located in cabin roof
