Russian Pilot Launching Air Brakes in mid air - MIG 29 Fulcrum

Russian Pilot Launching Air Brakes in mid air - MIG 29 - Supermaneuverability is the ability of aircraft to have control and do maneuvers in situations and in the ways exceeding that which is possible by pure aerodynamic mechanisms.[citation needed] This ability was first introduced in the Russian Sukhoi Su-27 and Mikoyan MiG-29 fighter aircraft in the 1980s, which has since become a standard in their advanced 4th and 5th generation aircrafts. There has been some conjectures, but the mechanism behind the supermaneuverability of the Russian aircrafts is still unknown. However, post-stall analyses are increasingly used in recent years to advance maneuverability via the use of thrust vectoring engine nozzles.[1] As the result of such studies, United States produced the Lockheed Martin F-22 Raptor, which is the first non-Russian supermaneuverable aircraft.



Russian emphasis on close-range slow-speed supermaneuverability runs counter to Western Energy–maneuvrability theory, which favors retaining kinetic energy to control the range of the engagement.[2]



Traditional aircraft maneuvering is accomplished by altering the flow of air passing over the control surfaces of the aircraft—the ailerons, elevators, flaps, air brakes and rudder. Some of these control surfaces can be combined—such as in the "ruddervators" of a V-tail configuration—but the basic properties are unaffected. When a control surface is moved to present an angle to the oncoming airflow, it alters the airflow around the surface, changing its pressure distribution, and thus applying a pitching, rolling, or yawing moment to the aircraft. The angle of control surface deflection and resulting directional force on the aircraft are controlled both by the pilot and the aircraft's inbuilt control systems to maintain the desired attitude, such as pitch, roll and heading, and also to perform aerobatic maneuvers that rapidly change the aircraft's attitude. For traditional manoeuvring control to be maintained, the aircraft must maintain sufficient forward velocity and a sufficiently low angle of attack to provide airflow over the wings (maintaining lift) and also over its control surfaces. As airflow decreases so does effectiveness of the control surfaces and thus the maneuverability. On the other hand, if the angle of attack exceeds its critical value, the airplane will stall. Pilots are trained to avoid stalls during aerobatic maneuvering and especially in combat, as a stall can permit an opponent to gain an advantageous position while the stalled aircraft's pilot attempts to recover.



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