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GATE 2024 AE – Question 27

Flight Mechanics & Space Dynamics · Aerodynamic forces and moments, angle of attack and sideslip, high-lift devices, roll, pitch and yaw controls · 1 mark · Multiple select

In a conventional configuration airplane, the rudder can be used:

  1. to overcome adverse yaw during a turning maneuver
  2. to overcome yawing moment due to failure of one engine in a multi engine airplane
  3. for landing the airplane in crosswind conditions
  4. for enhancing longitudinal stability

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Show answer and explanation

Correct answer: (A) to overcome adverse yaw during a turning maneuver; (B) to overcome yawing moment due to failure of one engine in a multi engine airplane; (C) for landing the airplane in crosswind conditions

Explanation

The rudder controls yaw. It cancels adverse yaw in turns, balances the asymmetric thrust when one engine fails, and is used to line the airplane up with the runway in a crosswind. It has no part in longitudinal (pitch) stability, which is provided by the horizontal tail.