Chandelle

It is rather a maneuver designed to show the pilot's proficiency in controlling the aircraft while performing a minimum radius climbing turn at a constant rate of turn (expressed usually in degrees per second) through a 180° change of heading, arriving at the new reciprocal heading at an airspeed in the "slow-flight" regime, very near the aerodynamic stall.

The aircraft can be flown in "slow-flight" after establishing the new heading, or normal cruise flight may be resumed, depending upon the purposes of the exercise or examination.

To begin the maneuver the pilot first rolls the aircraft in the desired direction with the controls (the ailerons), and quickly but smoothly establishes a medium-banked turn.

The aircraft should not lose altitude during the last part of the maneuver, nor during the recovery, when engine power may be used to re-establish normal cruising speed on the new heading.

In aerial combat, the chandelle maneuver was used both aggressively to position the aircraft for attack, and defensively to evade an enemy.

Chandelle from the FAA Publication FAA-H-8083-3A (Airplane Flying Handbook)