- Hovering is the most challenging part of flying a helicopter. This is because a helicopter generates its own gusty air while in a hover, which acts against the fuselage and flight control surfaces. The end result is constant control inputs and corrections by the pilot to keep the helicopter where it is required to be. Despite the complexity of the task, the control inputs in a hover are simple. The cyclic is used to eliminate drift in the horizontal plane, that is to control forward and back, right and left. The collective is used to maintain altitude. The pedals are used to control nose direction or heading. It is the interaction of these controls that makes hovering so difficult, since an adjustment in any one control requires an adjustment of the other two, creating a cycle of constant correction.
- Transition from hover to forward flight
- As a helicopter moves from hover to forward flight it 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, and may be necessary for a helicopter to obtain flight.
- Forward flight
- In forward flight a helicopter's flight controls behave more like those of a fixed-wing aircraft. Displacing the cyclic forward will cause the nose to pitch down, with a resultant increase in airspeed and loss of altitude. Aft cyclic will cause the nose to pitch up, slowing the helicopter and causing it to climb. Increasing collective (power) while maintaining a constant airspeed will induce a climb while decreasing collective will cause a descent. Coordinating these two inputs, down collective plus aft cyclic or up collective plus forward cyclic, will result in airspeed changes while maintaining a constant altitude. The pedals serve the same function in both a helicopter and a fixed-wing aircraft, to maintain balanced flight. This is done by applying a pedal input in whichever direction is necessary to center the ball in the turn and bank indicator.
Read more about this topic: Helicopter
Other articles related to "flight":
... X-15 Flight 3-65-97, also known as X-15 Flight 191, was a test flight of the North American X-15 experimental aircraft ...
... The weekend after the accident, an unofficial FRC (NASA Dryden Flight Research Center) search party found the camera, but could not find the film cartridge ... The electrical disturbance early in the flight degraded the overall effectiveness of the aircraft's control system and further added to pilot workload ... install a telemetered heading indicator in the control room, visible to the flight controller and medically screen X-15 pilot candidates for labyrinth (vertigo) sensitivity ...
... recovery ship in the Project Mercury orbital space flight of astronaut Walter Schirra after splashdown ... On 3 October, after a flawless flight, the carrier played her role in the Space Age by retrieving Schirra and his space capsule, Sigma 7, and returning him to Honolulu for flight back to the States ...
... Delta Air Lines Reported Incidents Flight Date Aircraft Location Description Casualties Fatal Serious Minor Uninjured Ground N/A April 22, 1947 DC-3 Columbus, Georgia A Vultee BT-13, owned by the Tuskegee ... The flight which originated from Dallas Love Field was on approach to Shreveport, Louisiana ... The improper use of flight and power controls by both instructor and the Captain-trainee during a simulated two-engine out landing approach ...
... hijackings which resulted in no injuries and the flight landing in Cuba include March 28, 1984 (Delta 357 New Orleans-Dallas 727), August 18, 1983 (Delta 784 Miami-Tampa 727), July 17, 1983 ... The flight was allowed to return with passengers to the U.S ... stormed aboard Delta Air Lines Flight 523, DC-9 flight at Baltimore Friendship Airport (now Baltimore/Washington International Thurgood Marshall Airport ...
Famous quotes containing the word flight:
“No Ravens wing can stretch the flight so far
As the torn bandrols of Napoleons war.
Choose then your climate, fix your best abode,
Hell make you deserts and hell bring you blood.
How could you fear a dearth? have not mankind,
Tho slain by millions, millions left behind?
Has not conscription still the power to weild
Her annual faulchion oer the human field?
A faithful harvester!”
—Joel Barlow (17541812)
“Fear of error which everything recalls to me at every moment of the flight of my ideas, this mania for control, makes men prefer reasons imagination to the imagination of the senses. And yet it is always the imagination alone which is at work.”
—Louis Aragon (18971982)
“Here I am.... You get the parts of me you like and also the parts that make you uncomfortable. You have to understand that other peoples comfort is no longer my job. I am no longer a flight attendant.”
—Patricia Ireland (b. 1935)