Aircraft Systems

Question 1

What are the 4 control surfaces?

Answer 1

Ailerons, rudder, elevator, flaps

Question 2

What is the purpose of flaps?

Answer 2

Increase drag and lift while decreasing airspeed.

Question 3

What are the 4 strokes of an engine?

Answer 3

Induction, compression, power, exhaust

Question 4

Why is there an RPM drop when turning on carb heat?

Answer 4

We are adding heat to the engine, which decreases performance.

Question 5

Why is the battery lower voltage than the system?

Answer 5

To allow the battery to charge.

Question 6

Which instruments are gyroscopic?

Answer 6

Attitude indicator, heading indicator, and turn coordinator

Question 7

What are the 2 main fundamentals of a gyroscope?

Answer 7

Rigidity in space - Based on Newton’s first law “a body in motion tends to move at a constant speed and direction unless disturbed by an external force
Precession - When a force is applied to a spinning gyro, it will be applied as if the force had been applied 90 degrees in the direction of rotation

Question 8

Name the compass errors

Answer 8

VDMONA

• Variation - true vs. magnetic
• Deviation - error from instrument electrical signals
• Magnetic dip - towards the poles
• Oscillation - Turbulence, cracks or bubbles can increase it
• Northerly turning error - UNOS
• Acceleration/deceleration - ANDS