AVT 203 Aerodynamics Unit 4 Test Guide Questions And Correct Answers

AVT 203 Aerodynamics Unit 4 Test Guide
Questions And Correct Answers


The angle of attack on individual main rotor blades is the same during

rotation.

True or False - ANSWER False



To compensate for dissymmetry of lift, the advancing blade will flap ______ to

_______ lift.

a. Down, reduce

b. Up, reduce

c. Down, increase - ANSWER Up, reduce



To compensate for dissymmetry of lift, the retreating blade will flap ______ to

_______ lift.

a. Down, reduce

b. Up, reduce

c. Down, increase - ANSWER Down, increase



The Torque applied to the rotor causes the rotor to spin in one direction and

causes the fuselage to spin in the opposite direction.

a. true

b. false - ANSWER true



The advancing blade generates ________ lift, while the retreating blade

, generates ________ lift, creating dissymmetry of lift.

a. More, less

b. Less, more - ANSWER More, less



The main rotor blades flap in order to compensate for

a. Dissymmetry of lift

b. The Coriolis Effect

c. Ground resonance - ANSWER Dissymmetry of lift



If you are flying forward at 100 knots, and your blade tip speed is 400 knots,

how fast will the advancing blade spin (ignore wind).

a. 300 knots

b. 400 knots

c. 500 knots - ANSWER 500 knots



In a hover the blade tip speed is 400 knots, how fast will the advancing blade

spin (ignore wind)

a. 300 knots

b. 400 knots

c. 500 knots - ANSWER 400 knots



The most effective way to compensate for dissymmetry of lift is to have a

a. Feathering hinge

b. Flapping hinge

c. Lead/lag hinge - ANSWER flapping hinge



Rotor blade speed is faster at the blade tip than at the blade root