thrust center
91Delta IV — This article is about the rocket. For the submarine see Delta class submarine. Delta IV (Delta 9000) Delta IV Medium launch carrying DSCS III B6 Function Orbital launch vehicle Manufacturer Boeing …
92Internal combustion engine — The internal combustion engine is an engine in which the combustion of a fuel (normally a fossil fuel) occurs with an oxidizer (usually air) in a combustion chamber. In an internal combustion engine, the expansion of the high temperature and high …
93Rocket — This article is about vehicles powered by rocket engines. For other uses, see Rocket (disambiguation). A Soyuz U, at Baikonur Site 1/5 A rocket is a missile, spacecraft, aircraft or other vehicle which obtains thrust from a rocket engi …
94Solar sail — Solar sails (also called light sails or photon sails, especially when they use light sources other than the Sun) are a proposed form of spacecraft propulsion using large membrane mirrors. Radiation pressure is about 10 5 Pa at Earth s distance… …
95Bachem Ba 349 — infobox Aircraft name = Ba 349 Natter type = Rocket interceptor manufacturer = Bachem caption = A replica of Bachem Ba349 at the Deutsches Museum in Munich, Germany designer = Erich Bachem first flight = March 1 avyear|1945 introduced = n/a… …
96Model aircraft — A die cast Boeing 747 400 model. Model aircraft are flying or non flying models of existing or imaginary aircraft using a variety of materials including plastic, diecast metal, polystyrene, balsa wood, foam and fibreglass. Flying designs range… …
97Helicopter 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 …
98P-factor — P factor, also known as asymmetric blade effect and asymmetric disc effect, is an aerodynamic phenomenon experienced by a moving propeller,[1] that is responsible for asymmetrical relocation of the propeller s center of thrust when aircraft is at …
992008 Sichuan earthquake — 2008 Earthquake 2008 Wenchuan Earthquake …
100Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
