FREE ATPL Aircraft Systems and Performance Questions and Answers
What does the term "Balanced Field Length" refer to in aircraft performance?
What is the primary function of the Auxiliary Power Unit (APU) on an aircraft?
The APU is a small engine located in the tail of the aircraft that provides electrical power and bleed air, primarily for starting the main engines and for air conditioning when the engines are not running.
What is the purpose of the aircraft's fuel jettison system?
The fuel jettison system allows the aircraft to dump fuel quickly in order to reduce its weight to a safe landing weight in the event of an emergency after takeoff.
What is the significance of V1 speed in takeoff performance?
V1 is the critical decision speed during takeoff. At or below V1, the pilot can safely abort the takeoff and bring the aircraft to a stop on the remaining runway. Above V1, the pilot is committed to continuing the takeoff.
What is the purpose of the aircraft's pressurization system?
The pressurization system ensures that the cabin remains at a comfortable pressure level for passengers and crew when the aircraft is flying at high altitudes where the outside air pressure is too low to breathe comfortably.