spin axis of rotor
21Bowling machine — In cricket a bowling machine is a device which enables a batsman to practise (usually in the nets) when there is no one available to bowl, or no one of the desired style or standard.There are a number of different types of bowling machine… …
22Autorotation — In aviation, the word autorotation is applied to operation of fixed wing aircraft and rotary wing aircraft. The word has significantly different meanings in each of these two applications.In the operation of fixed wing aircraft, autorotation is… …
23Angular momentum coupling — Coupling in science Classical coupling Rotational–vibrational coupling Quantum coupling Quantum mechanical coupling Rovibrational coupling Vibronic coupling Rovibronic coupling Angular momentum coupling …
24Flight control surfaces — Aircraft flight control surfaces allow a pilot to adjust and control the aircraft s flight attitude.Development of an effective set of flight controls was a critical advance in the development of the aircraft. Early efforts at fixed wing aircraft …
25Picoo Z — The Picoo Z (also sold under the brand name of Air Hogs Havoc Heli in North America) is a miniature remote controlled 2 channel micro helicopter manufactured by Hong Kong based Silverlit Toys. In the US it is distributed by Spin Master. The Picoo …
26Nanotube nanomotor — A device generating linear or rotational motion using carbon nanotube(s) as the primary component, is termed a nanotube nanomotor. Nature already has some of the most efficient and powerful kinds of nanomotors. Some of these natural biological… …
27Aircraft — An aircraft is a vehicle which is able to fly through the Earth s atmosphere or through any other atmosphere. Rocket vehicles are not aircraft if they are not supported by the surrounding air. All the human activity which surrounds aircraft is… …
28Zippe-type centrifuge — The Zippe type centrifuge is a device designed to collect Uranium 235. It was developed in the Soviet Union by a team of 60 Austrian and German scientists captured after World War II, working in detention. The centrifuge is named after the team s …
29Brushed DC electric motor — A brushed DC motor is an internally commutated electric motor designed to be run from a direct current power source. Contents 1 Simple two pole DC motor 2 The commutating plane 2.1 Compensation for stator field distortion …
30Quadrotor — A quadrotor, also called a quadrotor helicopter, is an aircraft that is lifted and propelled by four rotors. Quadrotors are classified as rotorcraft, as opposed to fixed wing aircraft, because their lift is derived from four rotors. They can also …
