rotor blade
61Helicopter noise reduction — is a topic of research into designing helicopters which can be operated more quietly, reducing the public relations problems with night flying or expanding an airport. In addition, it is useful for military applications in which stealth is… …
62Autogyro — An autogyro is a type of rotorcraft invented by Juan de la Cierva in 1919, making its first successful flight on January 9, 1923 at Cuatro Vientos Airfield in Madrid. [http://www.vectorsite.net/avheli 1.html#m4 Vector Flight] ] Similar to… …
63Coaxial rotors — Kamov Ka 32A 12 Coaxial rotors are a pair of helicopter rotors mounted one above the other on concentric shafts, with the same axis of rotation, but that turn in opposite directions (contra rotation). This configuration is a feature of… …
64Autorotation (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… …
65Los Angeles Airways Flight 417 — Accident summary Date August 14, 1968 Type Mechanical Failure Site …
66Wind turbine — Offshore wind farm using 5MW turbines REpower 5M in the North Sea off Belgium This article discusses wind powered electrical generators. See windmill for wind powered machinery used to grind grain or pump water. A wind turbine is a device that… …
67Asymmetry of lift — is the term used to describe the nature of aerodynamic lift generation by the rotor blades of a helicopter.The phenomenon is best analysed when a helicopter is in the hover condition (i.e., maintaining a fixed altitude above ground level, with no …
68Boeing AH-64 Apache — AH 64 Apache An AH 64D Apache from U.S. Army s 101st Aviation R …
69Helicopter flight controls — Location of flight controls in a helicopter A helicopter pilot manipulates the helicopter flight controls in order to achieve controlled aerodynamic flight.[1] The changes made to …
70AH-64 Apache — Infobox Aircraft name= AH 64 Apache caption= A US Army AH 64 Apache from 101st Aviation Regiment, in Iraq type= Attack helicopter national origin = United States manufacturer= Hughes Helicopters McDonnell Douglas Boeing Integrated Defense Systems …
