deceleration force
41ASTRODYNAMIQUE — L’astrodynamique est la science qui s’attache à expliciter la dynamique des astres et des forces qui les font se mouvoir. Par extension, la dynamique des satellites artificiels lui est assimilée. On peut dès lors définir l’astrodynamique comme la …
42SOCIALISME - Histoire économique des pays socialistes — L’ensemble des pays appartenant au système socialiste d’économie pouvait se définir, jusqu’à l’effondrement de ce système en 1989 1990, à partir de trois critères principaux. En premier lieu, les activités économiques, tout comme la vie politique …
43Dragon boat — This article is about Dragon boats and racing. For the festivals and holidays associated with dragon boats, see Duanwu Festival. Dragon boat Traditional Chinese 龍舟 Simplified Chinese 龙舟 …
44Clutch control — refers to the act of controlling the speed of a vehicle with a manual transmission by partially engaging the clutch plate, using the clutch pedal instead of (or in conjunction with) the accelerator pedal. The purpose of a clutch is in part to… …
45Loi de Murphy — Cet article concerne la Loi de Murphy. Pour le film américain de 1986, voir La Loi de Murphy (film, 1986). Pour le film français de 2009, voir La Loi de Murphy (film, 2009). La loi de Murphy est un adage qui s énonce « si quelque chose… …
46Bussard ramjet — The Bussard ramjet is a theoretical method of spacecraft propulsion proposed in 1960 by the physicist Robert W. Bussard, popularized by Larry Niven in his Known Space series of books, and referenced by Carl Sagan in the television series and book …
47productivity — pro·duc·tiv·i·ty (prō dŭk tĭvʹĭ tē, prŏd ək ) n. 1. The quality of being productive. 2. Economics. The rate at which goods or services are produced especially output per unit of labor. 3. Ecology. The rate at which radiant energy is used by… …
48radiation measurement — ▪ technology Introduction technique for detecting the intensity and characteristics of ionizing radiation, such as alpha, beta, and gamma rays or neutrons, for the purpose of measurement. The term ionizing radiation refers to those… …
49Scramjet — Part of a series on Aircraft propulsion Shaft engines (to drive pr …
50Space Shuttle Solid Rocket Booster — The Space Shuttle Solid Rocket Boosters (SRBs) are the pair of large solid rockets used by the Space Shuttle during the first two minutes of powered flight. They are located on either side of the orange external propellant tank. Each SRB produces …
