flapping blade
11Propeller — A propeller is essentially a type of fan which transmits power by converting rotational motion into thrust for propulsion of a vehicle such as an aircraft, ship, or submarine through a mass such as water or air, by rotating two or more twisted… …
12delta-three hinge — A hub hinge arrangement that is a coupling effect between either the flapping or lead lag hinge and a blade pitch. A blade has a delta three hinge if the movement of the blade in either axis causes the blade pitch to change. Pitch change rod… …
13Juan de la Cierva — This name uses Spanish naming customs; the first or paternal family name is De la Cierva and the second or maternal family name is Codorníu. Juan de la Cierva …
14Powered hang glider — A foot launched powered hang glider (FLPHG), also called powered harness, nanolight or hangmotor, is a powered hang glider harness with a motor and propeller in pusher configuration. An ordinary hang glider is used for its wing and control frame …
15Dissymmetry of lift — in rotorcraft aerodynamics refers to an uneven amount of lift on opposite sides of the rotor disc. It is a phenomenon that affects single rotor helicopters in lateral flight, whether the direction of flight be forwards, sideways or in reverse.… …
16List of Kirby characters — Contents 1 Main characters 1.1 Kirby 1.2 King Dedede 1.3 M …
17Stall (flight) — For other uses, see stall. In fluid dynamics, a stall is a reduction in the lift coefficient generated by a foil as angle of attack increases. This occurs when the critical angle of attack of the foil is exceeded. The critical angle of attack is… …
18Dynamic stall — is a non linear unsteady aerodynamic effect that occurs when aerofoils rapidly change the angle of attack. The rapid change can cause a strong vortex to be shed from the leading edge of the aerofoil, and travel backwards above the wing. The… …
19Sectaurs — Sectaurs: Warriors of Symbion was a line of action figures released by Coleco in 1984.The premise was that somewhere in space, somewhere in time, exists a planet called Symbion, where a genetic experiment fails. Frightening changes take place… …
20Origin of birds — For the book by Gerhard Heilmann, see The Origin of Birds (book). The famous Berlin specimen of Archaeopteryx lithographica The origin of birds is a contentious and central topic within evolutionary biology. A close relationship between birds and …
