SPC Basic Aerodynamics Principles 3

Question 1

During a coordinated turn at 60 degrees of bank, the load factor is approximately:

Accepted Answer

2.0 G

Answer

A 60-degree banked coordinated turn produces a load factor of 2.0 G because the vertical component of lift must still support the aircraft's full weight.

Question 2

What happens to the stall speed of an aircraft during a level, coordinated 60-degree banked turn?

Accepted Answer

Stall speed increases because of the higher load factor

Answer

Stall speed increases in a banked turn because the higher load factor requires greater angle of attack to maintain altitude, reaching the critical angle sooner.

Question 3

The Magnus effect in aerodynamics refers to:

Accepted Answer

Lift generated by a spinning cylinder or sphere in an airstream

Answer

The Magnus effect describes the aerodynamic lift produced when a spinning object moves through a fluid, as the spin creates unequal pressure on opposite sides.

Question 4

What is the purpose of wing washout (geometric twist)?

Accepted Answer

To ensure the wing root stalls before the wingtip, maintaining aileron effectiveness

Answer

Washout reduces the angle of incidence toward the wingtip so the root reaches its critical angle first, keeping the ailerons effective during an impending stall.

Question 5

Aspect ratio of a wing is defined as:

Accepted Answer

Wing span divided by mean chord length

Answer

Aspect ratio = wingspan ÷ mean chord (or wingspan² ÷ wing area), and higher aspect ratios reduce induced drag.

(SPC) Student Pilot Certificate Practice Test

(SPC) Student Pilot Certificate Practice Test

SPC Basic Aerodynamics Principles 3