Ads
related to: aircraft trim wheelebay.com has been visited by 1M+ users in the past month
Search results
Results from the WOW.Com Content Network
Typical trim tabs on aileron, rudder and elevator. Trim tabs are small surfaces connected to the trailing edge of a larger control surface on a boat or aircraft, used to control the trim of the controls, i.e. to counteract hydro- or aerodynamic forces and stabilise the boat or aircraft in a particular desired attitude without the need for the operator to constantly apply a control force.
Most fixed-wing aircraft have a trimming control surface on the elevator, but larger aircraft also have a trim control for the rudder, and another for the ailerons. The rudder trim is to counter any asymmetric thrust from the engines. Aileron trim is to counter the effects of the centre of gravity being displaced from the aircraft centerline ...
The most commonly available control is a wheel or other device to control elevator trim, so that the pilot does not have to maintain constant backward or forward pressure to hold a specific pitch attitude [4] (other types of trim, for rudder and ailerons, are common on larger aircraft but may also appear on smaller ones).
Some aircraft use a "ram's horn" style yoke, shaped like an "M", such as Embraer aircraft and the Concorde. There are some rarer exotic or archaic styles, such as circular or semi-circular designs, much like a steering wheel. In larger aircraft they are usually on a post protruding vertically from the floor, referred to as a control column.
In some aircraft trim devices are provided to eliminate the need for the pilot to maintain constant pressure on the elevator or rudder controls. [5] [6] The trim device may be: a trim tab on the rear of the elevators or rudder which act to change the aerodynamic load on the surface. Usually controlled by a cockpit wheel or crank. [5] [7]
As pilots pull on the 737 controls to raise the nose of the aircraft, aerodynamic forces on the elevator create an opposing force, effectively paralyzing the jackscrew mechanism that moves the stabilizer. [93] It becomes very difficult for pilots to hand crank the trim wheel. [93]
Ads
related to: aircraft trim wheelebay.com has been visited by 1M+ users in the past month