AFOQT Practice Test

What does "Flight Envelope" describe?

1. Speed and momentum limits during landing

2. Limits of speed, altitude, and angle of attack for stable flight

3. Weight limits during various phases of flight

4. Dimensions and size limits of the aircraft

The correct answer is: Limits of speed, altitude, and angle of attack for stable flight

"Flight Envelope" specifically refers to the limits of speed, altitude, and angle of attack for stable flight. This concept is essential for understanding the operational capabilities and constraints of an aircraft. The flight envelope illustrates the safe operational boundaries within which an aircraft can maneuver effectively and safely. Within the flight envelope, pilots can determine the optimal conditions for takeoff, cruising, and landing without risking loss of control or performance issues. It encompasses various parameters that influence flight dynamics, giving pilots crucial information about how the aircraft will behave under different conditions. Other options focus on specific aspects of flight performance but do not encompass the comprehensive definition of the flight envelope as it relates to stability and control in varied flight conditions. For example, weight limits are just one factor that can influence performance but do not encompass the broader operational limits defined by speed, altitude, and angle of attack.