control systems Flashcards
how are control systems typically controlled?
using cables that fully connect the control surfaces to the control column in the cockpit.
how does an elevator control column work?
- as pilot eases back on the control column the cables connected to the elevator cause an upward deflection creating a downwards force pitching the nose up.
how does a rudder control work?
as the pilot steps on the right rudder pedal deflecting the rudder to the right, it creates a force to the left which yaws the nose to the right and opposite for the other rudder.
how does an aileron control work?
pilot moves control column to the right, cables deflect the right aileron upwards which would cause it to roll to the right and the inverse with the other aileron.
how do trim tabs operate?
exclusively actuated by cables in light aircraft with some cables working via a bell crank and push rod to move the trim tab.
some utilise a spring on order to provide resistance against the elevator moving.
how do flaps operate?
via push rods in light aircraft with some being manually actuated or others via an electric motor.
what are control locks used for and how do they work?
used to secure the control in a fixed position to prevent them from being blown around and damaged by the wing and the propellor slipstream from other aircraft. must be removed before flight.
typical control lock includes a metal rod being placed through a hole in the control column preventing movement of the elevator and ailerons by stopping the control column from moving.
