Alpha Floor Protection Wiki

Alpha particles also called alpha rays or alpha radiation consist of two protons and two neutrons bound together into a particle identical to a helium 4 nucleus they are generally produced in the process of alpha decay but may also be produced in other ways alpha particles are named after the first letter in the greek alphabet α the symbol for the alpha particle is α or α 2.

Alpha floor protection wiki. The alpha floor is the max angle of attack at which in an airbus the alpha floor protection comes on and the airplane produces toga thrust. When activated it provides toga thrust. The a floor engaged mode changes to toga lk when a floor conditions no longer exist. They are replaced by a red and black barber pole the top indicating the stall warning speed v sw.

The alpha floor function is not available below 100 feet ra or during single engine operation with flaps at conf 1 or greater. V ls remains displayed. As the aircraft decelerates into the alpha protection range the alpha floor is activated even if the autothrust is disengaged. Alpha floor protection a system designed to prevent an aircraft from reaching very near its critical angle of attack because of slowing down too much.

Engine failure with derated t o selected below 100 ra at landing above m 53 failures alpha floor protection is lost in case of a thr failure. The alpha floor function is inoperative. The pfd airspeed scale is modified. Flight control mode or flight control law both refer to the computer software that transforms the movement of the joystick made by an aircraft pilot into movements of the aircraft control surfaces the control surface movements depend on which of several modes the flight computer is in.

Alpha floor occurs at a predetermined angle of attack. The α floor function is not available below 100 feet ra or. Alpha is short for angle of attack. The system automatically increases the thrust of the aircraft when speed is predicted to reach or exceed the critical angle of attack.

Inhibits engine failure with flaps extended. Activation is roughly proportional to the rate of deceleration. Activation is roughly proportional to the rate of deceleration. The amber boxed a floor annunciation is displayed when the speed is between alpha max and alpha protection and the auto thrust system commands to ga thrust regardless of thrust lever position.

Alpha floor is a low speed protection in normal law which is purely an autothrust mode. On the pfd its the beginning of the amber black blocked band. If high angle of attack protection is active the bank angle is limited to. Alpha floor is also triggered if the pilot applies a large aft stick input while either pitch attitude or angle of attack protection is active.

When activated it provides toga thrust. V alpha prot and v alpha max are removed. Alpha floor is a low speed protection in normal law which is purely an autothrust mode.