Thrust in Aviation Quiz

What happens to the angle of attack towards the blade tips?

• It increases.

• It remains constant.

• It reduces.

• It becomes zero.

What is the result of a reduction of thrust on the side of the disc nearest to an obstruction?

• Increased lift

• Reduced lift

• Increased speed

• Reduced speed

How is the countering effect produced in most single rotor helicopters?

• By increasing speed

• By applying a variable, horizontal force through a tail rotor

• By reducing weight

• By increasing lift

What must be countered for a single-rotor to be controlled?

• Lift

• Drag

• Torque reaction

• Gravity

What is the purpose of having an equal number of clockwise and anti-clockwise propellers in a multi-rotor?

• To increase speed

• To balance torque

• To reduce noise

• To save energy

What is not included in Empty Weight?

• Unusable fuel

• Undrainable oil

• Payload

• Fixed equipment

What is the Maximum Take-Off Weight (MTOW)?

• The weight of the fuel only

• The weight of the passengers only

• The maximum gross certificated weight permitted for take-off

• The weight of the cargo only

What is the primary purpose of determining OEW?

• To calculate fuel efficiency

• To determine the weight of passengers

• To include extra fixed operator items and optional equipment

• To measure the speed of the aircraft

What is the effect of increasing the angle of attack on a rotor blade?

• Decreased drag

• Increased drag

• Decreased lift

• Increased lift

What is the primary function of a tail rotor in a helicopter?

• To stabilize altitude

• To increase speed

• To counteract torque

• To provide additional lift