Stall warning system

It would be so helpful if some one alerts us about an imminent danger in advance.There is a system known as stall warning system which helps the pilot by alerting the them about stall conditions.

Video Credit: mzo

What is a stall condition?

A stall is a condition in which the wing loses the ability to generate required lift as it exceeds the critical angle of attack. Lift is the force which keeps the aircraft airborne. As a result of stall an aircraft may lose its altitude, sometime resulting in an accident.

How does a stall warning system work?

A stall warning system includes an angle of attack indicator, audible warning devices, and a stick shaker.

Angle of Attack Indicator

The angle of attack is the angle at which an airplane |ies, if this angle exceeds an aircraft may enter into a stall. Typically an airplane may stall at angles above 15 degrees. Angle of attack is measured by the on-board sensors and the indication is represented on the angle of attack indicator. Therefore showing the proximity to critical angle of attack.

Audible warning

If the threshold level is exceeded an audible warning is provided to the pilot by synthetic voice through speakers, Therefore the pilot is alerted.

stick shaker

A vibrating mechanical device is placed on the control yoke / stick which alerts the pilot by shaking the yoke, once an aircraft reaches critical stall condition.

A stall warning system is installed so that, an imminent danger can be prevented in advance. This ensures a safety while in flight.