Ad
related to: hovering flight helicopter
Search results
Results From The WOW.Com Content Network
Location of flight controls in a helicopter. Helicopter flight controls are used to achieve and maintain controlled aerodynamic helicopter flight. [1] Changes to the aircraft flight control system transmit mechanically to the rotor, producing aerodynamic effects on the rotor blades that make the helicopter move in a desired way.
Translational lift is improved rotor efficiency resulting from directional flight in a helicopter.Translation is the conversion from the hover to forward flight. [1]: 2–27 As undisturbed air enters the rotor system horizontally, turbulence and vortices created by hovering flight are left behind and the flow of air becomes more horizontal.
In 2013, a combination of stereophotogrammetry and rigid-body correction in post processing was shown to be a valid tool for performing these studies, and the dynamics of a Robinson R44 helicopter were measured during hovering flight, to determine blade dynamics (e.g. harmonics) and the deflection profile. [2]
For an overloaded helicopter that can only hover IGE it may be possible to climb away from the ground by translating to forward flight first while in ground effect. [11] The ground-effect benefit disappears rapidly with speed but the induced power decreases rapidly as well to allow a safe climb. [ 12 ]
As a helicopter moves from hover to forward flight it flies out of this downward flowing vortex and enters a state called translational lift which provides extra lift without increasing power. This state, most typically, occurs when the airspeed reaches approximately 16–24 knots (30–44 km/h; 18–28 mph), and may be necessary for a ...
Some travelers may be weary of helicopters, but Flexjet has a long history of safety and requires its helicopter pilots to have at least 3,000 hours of flight experience. The Sikorsky helicopters ...
Tiltrotor design combines the VTOL capability of a helicopter with the speed and range of a conventional fixed-wing aircraft. For vertical flight, the rotors are angled so the plane of rotation is horizontal, generating lift the way a normal helicopter rotor does. As the aircraft gains speed, the rotors are progressively tilted forward, with ...
The investigation determined that the helicopter lost yaw control due to failure of flight control computer. On 29 May 2001, a Republic of Korea Army (ROK Army) CH-47D installing a sculpture onto Olympic Bridge in Seoul, South Korea failed to unlatch the sculpture. The helicopter's rotors struck the monument; then the fuselage hit and broke ...