Lesson Plan
Performance Maneuvers: Chandelles
Purpose
The chandelle originates from the earliest days of combat aviation, when dogfighting pilots executed rapid course reversals and maximum gains in altitude.
The purpose of the chandelle is to demonstrate the pilot's planning, orientation, coordination, and accuracy during a maximum-performance maneuver. This is accomplished by the pilot's smoothness, aircraft control through changing airspeeds and attitudes, and a maximum-performance gain in altitude at the end of the maneuver.
Elements
Maximum performance climbing turn: A chandelle is a maximum performance, 180° climbing turn that begins from approximately straight-and-level flight and concludes with the airplane in a wings-level, nose-high attitude just above stall speed.
Get the most altitude possible: The goal of a chandelle is to gain the most altitude possible for a given bank angle and power setting.
Constant bank, changing pitch: The first 90° of a chandelle is defined by constant bank and changing pitch.
Constant pitch, changing bank: The second 90° of the maneuver is defined by constant pitch and changing bank.
Chandelle entry: The chandelle should be entered from straight-and-level flight or a shallow dive at the airplane's design maneuvering speed (Va), or at an airspeed recommended by the manufacturer.
Climbing turn: Once the bank angle is established (generally 30°), a climbing turn should be started with elevator back-pressure applied at a constant rate while simultaneously increasing engine power to the recommended setting.
The first 90°: During the first 90°, the pilot will set the bank angle, and then increase power and pitch at a rate so that maximum pitch-up is set at the completion of the first 90°.
The second 90°: Starting at the 90° point, the pilot begins a slow and coordinated constant rate rollout so as to have the wings level when the airplane is at the 180° point while maintaining the constant pitch attitude set in the first 90°.
Left-turning tendencies: Since the airspeed is constantly decreasing throughout the chandelle, the effects of left turning tendencies, such as P-factor, becomes more apparent.
Smooth roll-out: At the 90° point, begin to smoothly roll out of the bank at a constant rate while maintaining the pitch attitude.
Completion left and right: Near the completion of the chandelle, airspeed is slowest, which means right rudder pressure will be substantial for coordinated flight.
End of maneuver: At the completion of 180° of turn, the wings should be leveled to the horizon and the airspeed should be just above stall speed.
Common errors
Too shallow, early stall: If a chandelle is begun with a bank that is too shallow, the pitch angle will increase excessively, and the airplane is likely to stall before it reaches the 180° point.
Too steep, excessive airspeed on rollout: If a chandelle is begun with a bank that is too steep, the airplane will make a comparatively level turn without enough airspeed loss. This would result in a tendency to raise the nose to reduce speed on rollout.
Incorrect pitch = inaccurate airspeed: During the first 90°, if the pitch is not correct, airspeed will be either above stall speed, or the airplane may aerodynamically stall prior to the completion of the maneuver.
Incorrect rollout rate = inaccurate heading: During the second 90°, if the rate of rollout is too rapid or sluggish, the airplane will either undershoot or exceed the 180° reversal heading turn as the wings come level to the horizon.
Procedure
Common Errors
Common errors when performing chandelles include:
Completion Standards
Commercial Pilot & CFI Airmen Certification Standards (ACS)
More Details
More details are available in the Airplane Flying Handbook
Lesson Plan Checklist
Chandelles