Table of Contents
- 1 Which flight control generates lift in a helicopter?
- 2 How does an aircraft fly what are the forces acting on it?
- 3 How are helicopters controlled?
- 4 Why there is specific lifting points in the aircraft?
- 5 Why does the nose pitch up when adding power?
- 6 What are the primary flight controls?
- 7 How does a tail rotor work on a helicopter?
- 8 How does a Sikorsky helicopter rotor work?
Which flight control generates lift in a helicopter?
The throttle controls the power of the engine, which is connected to the rotor by a transmission. The throttle setting must maintain enough engine power to keep the rotor speed within the limits where the rotor produces enough lift for flight.
How does an aircraft fly what are the forces acting on it?
An airplane in flight is acted on by four forces: lift, the upward acting force; gravity, the downward acting force; thrust, the forward acting force; and drag, the backward acting force (also called wind resistance). Airplane engine and propeller combination is designed to produce thrust to overcome drag.
How does lift work on a wing?
How Wings Lift the Plane. Airplane wings are shaped to make air move faster over the top of the wing. When air moves faster, the pressure of the air decreases. The difference in pressure creates a force on the wing that lifts the wing up into the air.
What causes an airplane to pitch nose down when power is reduced?
What causes an airplane (except a T tail) to pitch nose down when power is reduced and controls are not adjusted? The downwash on the elevators from the propeller slipstream is reduced and elevator effectiveness is reduced. An airplane has been loaded in such a manner that the CG is located aft CG limit.
How are helicopters controlled?
They are the collective pitch control, the cyclic pitch control, and the antitorque pedals or tail rotor control. In addition to these major controls, the pilot must also use the throttle control, which is usually mounted directly to the collective pitch control in order to fly the helicopter.
Why there is specific lifting points in the aircraft?
These jacking points are usually located in relation to the aircraft center of gravity so the aircraft will be well balanced on the jacks. However, there are some exceptions to this. On some aircraft it may be necessary to add weight to the nose or tail of the aircraft to achieve a safe balance.
Which force pushes a plane up?
Weight is the force caused by gravity. Lift is the force that holds an airplane in the air. The wings create most of the lift used by airplanes.
What causes lift?
Lift occurs when a moving flow of gas is turned by a solid object. The flow is turned in one direction, and the lift is generated in the opposite direction, according to Newton’s Third Law of action and reaction. Because air is a gas and the molecules are free to move about, any solid surface can deflect a flow.
Why does the nose pitch up when adding power?
The actual cause is the increased air flow over the tail. On non T-tail planes the horizontal stabilizer is also in the area of downdraft from the wings. These two effects combine to cause the tail to generate more negative lift, which raises the nose.
What are the primary flight controls?
Primary flight controls are required to safely control an aircraft during flight and consist of ailerons, elevators (or, in some installations, stabilator) and rudder.
What does a single engine do in a helicopter?
A single engine powers both the main rotor blade and the tail rotor. One of Sikorsky’s key innovations was to produce a helicopter that needed only one main rotor blade, with a tail rotor to balance it, for reasons discussed below.
What are the 4 main controls on a helicopter?
Control functions A helicopter has four controls: collective pitch control, throttle control, antitorque control, and cyclic pitch control. The collective pitch control is usually found at the pilot’s left hand; it is a lever that moves up and down to change the pitch angle of the main rotor blades.
How does a tail rotor work on a helicopter?
The tail rotor is driven by a drive shaft running back from the main engines, parallel to the body of the helicopter. If you look closely, you’ll see that the blades of the rotor can be tilted by the pilot as they spin around, which generates more or less pushing force and gives the helicopter the ability to rotate on the spot as it hovers.
How does a Sikorsky helicopter rotor work?
The main rotor blade rotates around a central hub (yellow) with an engine beneath it. A single engine powers both the main rotor blade and the tail rotor. One of Sikorsky’s key innovations was to produce a helicopter that needed only one main rotor blade, with a tail rotor to balance it, for reasons discussed below.