Aviation Aircraft Systems 2

Question 1

What is the purpose of a constant-speed propeller?

Accepted Answer

To maintain a selected RPM by automatically varying blade pitch as power or speed changes

Answer

A constant-speed propeller uses a governor to automatically change blade pitch to maintain the pilot-selected RPM as flight conditions change.

Question 2

What is the purpose of the aircraft's ELT (Emergency Locator Transmitter)?

Accepted Answer

To automatically transmit a distress signal on 406 MHz after an impact

Answer

An ELT automatically activates upon impact and transmits a distress signal on 406 MHz to COSPAS-SARSAT search and rescue satellites.

Question 3

What is the difference between IAS (Indicated Airspeed) and TAS (True Airspeed)?

Accepted Answer

TAS is IAS corrected for non-standard pressure and temperature (air density)

Answer

TAS is the actual speed through the air mass, calculated by correcting IAS for non-standard pressure and temperature (lower air density at altitude).

Question 4

What is an aircraft's 'service ceiling'?

Accepted Answer

The highest altitude at which the aircraft can maintain a 100 fpm climb rate

Answer

Service ceiling is the altitude at which an aircraft can maintain only a 100 ft/min rate of climb under standard conditions.

Question 5

What flight instrument uses the gyroscopic principle of rigidity in space?

Accepted Answer

Attitude indicator

Answer

The attitude indicator (artificial horizon) uses a gyroscope that remains rigid in space, providing a stable reference for aircraft pitch and bank.

Aviation Practice Test