Thetailslide is anaerobatic maneuver that starts from level flight with a1⁄4 loop up into a straight vertical climb (at full power) until theaircraft losesmomentum. When the aircraft's speed reaches zero and it stops climbing, thepilot maintains the aircraft in a stand-still position as long as possible (this is greatly helped bythrust vectoring on newerfighter aircraft), and as it starts to fall to the ground backward, tail first, the nose drops through thehorizon to a vertical down position and the aircraft enters adive. A1⁄4 loop (push or pull) recovers to level flight.
Tailslides will transiently reverse the airflow on many aircraft surfaces, giving abnormal forces compared with forward flight. The control surface linkages must be able to handle these forces without damage or deformation. Not all airplanes capable of aerobatics are also capable of tailslide maneuvers.
Thebell is a variation of the tailslide maneuver, with the only difference being that the pilot performs aroll in the longitudinal axis during the final 1/4 loop (push or pull) while recovering to level flight, out of plane.
Kvochur's bell orKvochur bell is a variation where the aircraft propels forward almost vertically while simultaneously braking and following the movement of its tail. It is named after Russian test pilotAnatoly Kvochur.[1][2]
