helicopter theory

См. также в других словарях:

• Helicopter parent — is a colloquial, early 21st century term for a parent who pays extremely close attention to his or her child s or children s experiences and problems, particularly at educational institutions. The term was originally coined by Foster W. Cline,… …   Wikipedia

• Helicopter rotor — This article is about helicopter main rotor systems. For antitorque control, see tail rotor. Helicopter rotor The rotor head of a Sikorsky S 92 A helicopter main rotor or rotor system is a type of fan that is used to generate both the aerodynamic …   Wikipedia

• Blade element theory — (BET) is a mathematical process originally designed by William Froude (1878), David W. Taylor (1893) and Stefan Drzewiecki to determine the behavior of propellers. It involves breaking an airfoil down into several small parts then determining the …   Wikipedia

• Black helicopter — For other uses, see Black helicopter (disambiguation). US servicemen in a black MH 6 Little Bird helicopter Black helicopters is a term which became popular in the United States militia movement and its associated political circles in the 1990s… …   Wikipedia

• De Bothezat helicopter — de Bothezat The Flying Octopus Role Experimental rotorcraft Manufacturer …   Wikipedia

• Momentum theory — In fluid dynamics, the momentum theory or disk actuator theory is a theory describing a mathematical model of an ideal actuator disk, such as a propeller or helicopter rotor, by W.J.M. Rankine (1865), Alfred George Greenhill (1888) and R.E.… …   Wikipedia

• New World Order (conspiracy theory) — This article is about the use of the term New World Order in conspiracy theory. For other uses, see New World Order. The reverse side of the Grea …   Wikipedia

• U.S. Helicopter Armament Subsystems — The United States military has developed a number of Helicopter Armament Subsystems since the early 1960s. These systems are used for offensive and defensive purposes and make use of a wide variety of weapon types including, but not limited to… …   Wikipedia

• Autorotation (helicopter) — Autorotation is the state of flight where the main rotor system of a helicopter is being turned by the action of air moving up through the rotor rather than engine power driving the rotor. The term autorotation can be traced back to a period of… …   Wikipedia

• Backpack helicopter — A backpack helicopter is a helicopter motor and rotor and controls assembly that can be strapped to a person s back, so that he can walk about on the ground wearing it, and can use it to fly. Its harness, like a parachute harness, should have a… …   Wikipedia

• Attachment theory — …   Wikipedia