deceleration force
71Vol spatial habité vers Mars — Mission habitée vers Mars Mission sur mars Peinture de Les Bossinas du Lewis Research Center pour la NASA (1989) La mission spatiale habitée vers Mars est un des objectifs à long terme fixés à l astronautique depuis ses débuts. Initialement thème …
72Concorde — For other uses, see Concorde (disambiguation). Concorde Role Supersonic airliner …
73Wernher von Braun — Von Braun at his desk at Marshall Space Flight Center in May 1964, with models of the Saturn rocket family Born March 23, 1912(1912 03 23) Wirsitz, German Empire …
74Engine braking — is where the retarding forces within an engine are used to slow a vehicle down, as opposed to using an external braking mechanism, for example friction brakes or magnetic brakes. The term is often confused with several other types of braking,… …
75jet engine — an engine, as an aircraft engine, that produces forward motion by the rearward exhaust of a jet of fluid or heated air and gases. Also called jet, jet motor. [1940 45] * * * Any of a class of internal combustion engines that propel aircraft by… …
76Interstellar travel — Montage of fusion powered rocket concepts from 1987–2004, which could form the basis for an interstellar vehicle. Included are: VISTA (Lawrence Livermore National Laboratories,1987), Discovery II (NASA/GRC, 2002), Human Outer Planet Exploration… …
77Thrust reversal — Thrust reversal, also called reverse thrust, is the temporary diversion of an aircraft engine s exhaust or changing of propeller pitch so that the thrust produced is directed forward, rather than aft. This acts against the forward travel of the… …
78Automotive lighting — Blinker redirects here. For other uses, see Blinker (disambiguation). Not to be confused with Magneti Marelli company AL Automotive Lighting. For lights in seafaring and aviation, see navigation light. The lighting system of a motor vehicle… …
79PARACHUTE — Matériel aérien, le parachute sert à décélérer aérodynamiquement la vitesse d’un mobile, laquelle peut avoir pour origine la pesanteur ou la propulsion. La décélération est obtenue en offrant au vent relatif de l’air par rapport au mobile une… …
80External ballistics — is the part of the science of ballistics that deals with the behaviour of a non powered projectile in flight. External ballistics is frequently associated with firearms, and deals with the behaviour of the bullet after it exits the barrel and… …
