Position And Indicating Systems

Question 1

What is a stall

Answer 1

A flying condition where the air flow over the upper surface of the wing separates and becomes turbulent 

Question 2

What are the different types of stall warning indicators?

Answer 2

 Small aircraft, use audible tone, or a red light, many high-performance aircraft use a stick shaker, an electric stall warning is used on the leading edge of the tab to move in the upward direction to close the circuit 

Question 3

What is a reed type stall indicator?

Answer 3

Uses air flow through the cabin of the aircraft in order to create a tone, giving an indication of a stall happening. There are two points, one at the wing, and one in the cabin. 

Question 4

How do you measure the angle of attack on an aircraft? 

Answer 4

One method is with a slotted probe sticking out of the side of the aircraft fuselage
Another method is with a vane type sensor as the aircraft angle of attack increases. It moves the lever on the potentiometer indicating the angle. 

Question 5

What position indicating system uses DC power?

Answer 5

The direct current Selsyn system uses two coils of wire that sends voltage to indicate positions on aircraft items 

Question 6

What are the two types of position indicating systems for alternate current? 

Answer 6

The Magnesyn system that uses a permanent magnet in different poles, to send information from the transmitter to the indicator
The autosyn system uses an electromagnet to send information from the transmitter to the indicator