Rotor Blade
A helicopter main rotor or rotor system is the combination of several rotary wings (rotor blades) with a control system, that generates the aerodynamic lift force that supports the weight of the helicopter, and the thrust that counteracts aerodynamic drag in forward flight. Each main rotor is mounted on a vertical mast over the top of the helicopter, as opposed to a helicopter tail rotor, which connects through a combination of drive shaft(s) and gearboxes along the tail boom. The blade pitch is typically controlled by the pilot using the helicopter flight controls. Helicopters are one example of rotary-wing aircraft (rotorcraft). The name is derived from the Greek words ''helix'', helik-, meaning spiral; and ''pteron'' meaning wing. Design principles Overview The helicopter rotor is powered by the engine, through the transmission, to the rotating mast. The mast is a cylindrical metal shaft that extends upward from—and is driven by—the transmission. At the top of the mast i ...
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AH-1 Blade Flight
AH-1 or variant may refer to: Minor planets * ''1981 AH1'', or 2684 Douglas * ''1983 AH1'', or 4783 Wasson * ''1991 AH1'', or 8166 Buczynski * ''1994 AH1'', or 7257 Yoshiya * ''1996 AH1'', or 37699 Santini-Aichl * ''2002 AH1'', or 95008 Ivanobertini Vehicles * Bell Huey derived attack helicopters: ** Bell AH-1 Cobra, single engine attack helicopter ** Bell AH-1 SuperCobra, dual engine attack helicopter ** Bell 309 KingCobra, attack helicopter * , a hospital ship Other uses * AH1 Asian Highway 1 (AH1) is the longest route of the Asian Highway Network, running from Tokyo, Japan via Korea, China, Southeast Asia, Bangladesh, India, Pakistan, Afghanistan and Iran to the border between Turkey and Bulgaria west of Istanbul ...