sea-level specific impulse
41Force — For other uses, see Force (disambiguation). See also: Forcing (disambiguation) Forces are also described as a push or pull on an object. They can be due to phenomena such as gravity, magnetism, or anything that might cause a mass to accelerate …
42Non-rocket spacelaunch — Non rocket space launch (NRS) is a launch into space where some or all needed speed and altitude is provided by non rocket means, rather than simply using conventional chemical rockets from the ground. A number of alternatives to rockets have… …
43Czech Republic — a republic in central Europe: includes the regions of Bohemia, Moravia, and part of Silesia; formerly part of Czechoslovakia; independent since 1993. 10,318,958; 30,449 sq. mi. (78,864 sq. km). Cap.: Prague. * * * Czech Republic Introduction… …
44MBDA Meteor — Meteor Type Beyond Visual Range Air to Air Missile Se …
45F-1 (rocket engine) — The F 1 is a rocket engine developed by Rocketdyne and used in the Saturn V. Five F 1 engines were used in the S IC first stage of each Saturn V, which served as the main launch vehicle in the Apollo program. History The F 1 was originally… …
46Orders of magnitude (speed) — To help compare different orders of magnitude, the following list describes various speed levels between approximately 1×10−10 m/s and 3×108 m/s. Values in bold are exact. List of orders of magnitude for speed List of orders of… …
47Geocentric orbit — Earth orbit redirects here. For the motion of the Earth around the Sun, see Earth s orbit. Earth orbiter redirects here. For the shuttle simulator, see Earth Orbiter 1. The following words may have more than one definition or other non Earth… …
48Serbia — /serr bee euh/, n. a former kingdom in S Europe: now, with revised boundaries, a constituent republic of Yugoslavia, in the N part; includes the autonomous provinces of Kosovo and Vojvodina. 9,660,000; 34,116 sq. mi. (88,360 sq. km). Cap.:… …
49Big Sur — is a sparsely populated region of the central California, United States, coast where the Santa Lucia Mountains rise abruptly from the Pacific Ocean. The terrain offers stunning views, making Big Sur a popular tourist destination. Big Sur s Cone… …
50Nozzle extension — Artist rendition of liquid rocket engine J 2X with expanded nozzle extension …
