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Helicopters with fly-by-wire systems allow a cyclic-style controller to be mounted to the side of the pilot seat. The cyclic is used to control the main rotor in order to change the helicopter's direction of movement. In a hover, the cyclic controls the movement of the helicopter forward, back, and laterally.
From 1981 to 1987, five Black Hawks crashed (killing or injuring all on board) while flying near radio broadcast towers because their electromagnetic emissions disrupted the helicopters' flight control systems. The Black Hawk helicopters were not hardened against high-intensity radiated fields, contrary to the SH-60 Seahawk Navy version. The ...
A Sea King helicopter landing on HMCS Assiniboine (DDH 234); the beartrap is the small rectangle on the flight deck. Recover assist landing of a SH-60B helicopter with a RAST system. A helicopter hauldown and rapid securing device (HHRSD) or beartrap enables helicopters to land on and depart from smaller ships in a wide range of weather ...
The signs of VRS are a vibration in the main rotor system [8] followed by an increasing sink rate and possibly a decrease of cyclic authority. [9]In single rotor helicopters, the vortex ring state is traditionally corrected by slightly lowering the collective to regain cyclic authority and using the cyclic control to apply lateral motion, often pitching the nose down to establish forward flight.
Airbus Helicopters manufactures and markets a broad range of civil helicopters. With large facilities in Texas and Mississippi and service centers throughout the country, Airbus Helicopters, Inc. has a U.S. footprint of over 860,000 square feet (79,900 m 2) and controls over 50% of the U.S. market. [1]
A carburetor heat control is used to supply heated air to the carburetor; this can prevent or cure icing, but also causes a reduction in engine power output because hot air is less dense, enriching the fuel-air mixture. The carburetor heat control is a simple plunger-type control mounted on the center console near the collective pitch control ...
The Wingless Electromagnetic Air Vehicle (WEAV) is a heavier-than-air flight system which can self-lift, hover, and fly reliably with no moving components The Wingless Electromagnetic Air Vehicle ( WEAV ) is a heavier than air flight system developed at the University of Florida , funded by the Air Force Office of Scientific Research .
Many of the helicopters made their way to the civilian market and museums. Under the aircraft designation system used by the U.S. Navy pre-1962, Navy and U.S. Marine Corps versions were originally designated as the HTK, HOK or HUK, for their use as training, observation or utility aircraft, respectively. The Air Force Version was the H-43A ...