helicopter performance

The flying properties of a helicopter, which can be expressed quantitatively, including some of the following: top speed, cruising speed, best rate of climb, vertical rate of climb, hovering ceiling in and outside ground effect, pay-load, range and endurance, and single engine performance.
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.

Aviation dictionary. 2014.

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  • 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

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  • 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

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  • 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

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