Intro to UAV Mid Term

Increasing humidity _________.

• raises air density

• lowers air density

• eliminates air density

• does not change air density

An airplane said to be inherently stable will _________.

• require less effort to control

• be difficult to stall

• not spin

• tend to return to its original attitude

Which of the following is part of the empennage of a fixed-wing aircraft? Select all that apply.

• rudder

• landing gear

• vertical stabilizer

• horizontal stabilizer

Which safety measures are taken if the cabin of an airliner becomes depressurized? Select all that apply.

• The pilot would descend the airplane to a lower altitude.

• A safety hammer would be used to knock out a rear window.

• Passengers would be told to remain seated in a crouched position.

• Oxygen masks would be deployed.

• The crew would increase the temperature of the cabin.

With respect to the certification of aircraft, which are categories of aircraft?

• Normal, utility, acrobatic

• Airplane, rotorcraft, glider

• Landplane, seaplane

• Single-engine, twin-engine, multi-engine

What effect does high density altitude, as compared to low density altitude, have on propeller efficiency and why? (3.B.1)

• Efficiency is increased due to less friction on the propeller blades.

• Efficiency is reduced because the propeller exerts less force at high density altitudes than at low density altitudes.

• Efficiency is reduced due to the increased force of the propeller in the thinner air.

• Efficiency is increased due to the lower temperatures associated with high density altitude.

Density Altitude is calculated using what information? Select all that apply. (3.B.1)

• Weight of aircraft

• Outside air temperature

• Pressure altitude

• ISA at measured pressure altitude

• Cruising altitude

A ________ is a type of UAS that most closely resembles a helicopter. (1.B.2)

• sUAS

• Quadcopter

• Multirotor UAS

• Single-rotor UAS

Which type of drone does not have the ability to hover? (2.A.2)

• Tricopter

• Multirotor drone

• Single-rotor drone

• Fixed-wing drone

What is the purpose of the rudder on an airplane? (5.B.1)

• To control yaw

• To control overbanking tendency

• To pitch the airplane up and down

• To control roll