helicopter — /hel i kop teuhr, hee li /, n. 1. any of a class of heavier than air craft that are lifted and sustained in the air horizontally by rotating wings or blades turning on vertical axes through power supplied by an engine. v.i. 2. to fly in a… … Universalium
Helicopter — For other uses, see Helicopter (disambiguation). Helicopter An LAPD Bell 206 … Wikipedia
performance Class 1 helicopter — A helicopter with performance such that, in case of critical power unit failure, it is able to land on the rejected take off area or safely continue flight to an appropriate landing area, depending on when the failure occurs (ICAO) … Aviation dictionary
performance Class 2 helicopter — A helicopter with performance such that, in case of critical power unit failure, it is able to safely continue flight, except when the failure occurs prior to a defined point after take off or after a defined point before landing, in which case a … Aviation dictionary
performance Class 3 helicopter — A helicopter with performance such that, in case of power unit failure at any point in the flight profile, a forced landing must be performed (ICAO) … Aviation dictionary
helicopter clearway — A defined area on the ground or the water under the control of the appropriate authority, selected and/or prepared as a suitable area over which a performance class 1 helicopter may accelerate and achieve a specific height. A clearway is to be… … Aviation dictionary
Radio-controlled helicopter — Nitro powered Align T Rex 600 NSP Electric powered Venom Ai … Wikipedia
U.S. Helicopter Armament Subsystems — The United States military has developed a number of Helicopter Armament Subsystems since the early 1960s. These systems are used for offensive and defensive purposes and make use of a wide variety of weapon types including, but not limited to… … Wikipedia
De Bothezat helicopter — de Bothezat The Flying Octopus Role Experimental rotorcraft Manufacturer … Wikipedia
Autorotation (helicopter) — Autorotation is the state of flight where the main rotor system of a helicopter is being turned by the action of air moving up through the rotor rather than engine power driving the rotor. The term autorotation can be traced back to a period of… … Wikipedia
Typical hover ceiling graph showing the relationship between the helicopter’s ability to hover in-ground effect (IGE) or out-ground effect (OGE) versus gross weight and pressure altitude.