Certified Flight Instructor (CFI) Practice Exam

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Study for the Certified Flight Instructor Test. Explore multiple-choice questions, detailed explanations, and get fully prepared for your CFI exam! Achieve success with your flight instructor exam by understanding key concepts and honing your technical skills.

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Which speed is referred to as Vmu?

Minimum unstick speed
Maximum operating limit speed
Lift off speed
Design flap speed

The correct answer is: Minimum unstick speed

The term Vmu refers to "minimum unstick speed." This is an important performance metric for aircraft, specifically related to the takeoff phase. Vmu is the lowest speed at which the aircraft can safely become airborne without risking a stall. At or above this speed, the aircraft is capable of lifting off, assuming all other conditions are met, such as pitch attitude and thrust. Understanding Vmu is crucial for pilots, particularly in training and during takeoff operations. It helps ensure that the aircraft has the necessary airflow over the wings to maintain lift while also being aware of factors such as weight and center of gravity, which can affect performance. This knowledge allows pilots to make informed decisions regarding their takeoff roll, ensuring an effective transition from ground to air, especially in scenarios where the aircraft may need to abort the takeoff if certain conditions are not met prior to reaching this critical speed.