Nounspacecraft (plural spacecrafts or spacecraft) SynonymsFrom Wiktionary under the GNU Free Documentation License. A spacecraft is a craft or machine designed for spaceflight. Spacecraft are used for a variety of purposes, including communications, earth observation, meteorology, navigation, planetary exploration and space tourism. Spacecraft and space travel are common themes in works of science fiction. On a sub-orbital spaceflight, a spacecraft enters space and then returns to the surface, without having gone into an orbit. For orbital spaceflights, spacecraft enter closed orbits around the Earth or around other celestial bodies. Spacecraft used for human spaceflight carry people on board as crew or passengers, while those used for robotic space missions operate either autonomously or telerobotically. Robotic spacecraft used to support scientific research are space probes. Robotic spacecraft that remain in orbit around a planetary body are artificial satellites. Only a handful of interstellar probes, such as Pioneer 10 and 11, Voyager 1 and 2 , and New Horizons, are currently on trajectories that leave our Solar System. From Wikipedia under the
GNU Free Documentation License How is it possible that a satellite or spacecraft is never hit by space debris, meteors or asteroids? Q. Spacecraft are moving at high velocities. They don't have a anti-collision system, odds are that sooner or later they would run into objects in space and be destroyed. Asked by monty - Sun Jan 11 19:04:18 2009 - - 21 Answers - 0 Comments A. The magic plastic nano sheild protects satellities and spacecraft from mean space debris, the nano magic plastic sheild destroys anything dangerous up to 23 miles away. Answered by Sassy - Sun Jan 11 21:25:58 2009 What is the weight of this spacecraft at the following distances from Earth's surface? Q. The radius of Earth is about 6.38x10^3 km. A 7.30x10^3 N spacecraft travels away from Earth. What is the weight of the spacecraft at the following distances from Earth's surface? (a) 6.38x10^3 km (b) 1.35x10^4 km Asked by LiNDSi <3 - Tue Jul 29 01:58:53 2008 - - 2 Answers - 0 Comments A. According to newtons law of gravitation the weight force acting on the spacecraft is inversely proportional to the distance to the center of earth: F = G M m / r (G gravitation constant, M ass of earth, m mass of spacecraft,) Let F be the weight on earth surface (r =R) : F = G M m/R The weight at distance d to earth surface (r=R+d) is F = G M m/(R+d) So the ratio of the weight at two different distances is F/F = (R /(R+d)) <=> F = F / (1 + (d/R) ) (a) F = 7.30 10 N / (1 + (6.38 10 km / 6.38 10 km) ) = 1.825 10 N (b) F = 7.30 10 N / (1 + (1.35 10 km / 6.38 10 km) ) = 7.52 10 N Answered by schmiso - Tue Jul 29 05:26:28 2008 Find the magnitude of the net gravitational force exerted on the spacecraft by the earth and moon.?
Q. At a certain instant, the earth, the moon, and a stationary 1370kg spacecraft lie at the vertices of an equilateral triangle whose sides are in length. Asked by Jigs - Wed Apr 21 02:09:36 2010 - - 1 Answers - 0 Comments A. F : the force we have to find. Fe : the force due to earth on the satelite Fm: thr force due to moon on the satelite M(e) ; The mass of earth M(m) : The mass of moon. m : mass of satelite. Fe = GM(e)*m/ R^2; Fm = GM(m)*m/ R^2 F(e) /F(m) = M(e) / M(m) = k = 5.978e24/ 7.353e22 =7.353e+22 Angle between the two forces is 60 Using R^2 = P^2 + Q^2 + 2PQ cos [F]^2 = Fm ^2 [k^2 + 1 + 2 kcos60] [F]^2 = Fm ^2 [k^2 + 1 + k] [F] = 7.353e+22 Fm --- Fm = GM m /R^2. R = the distance between moon and earth. M is the mass of moon and m is the mass of the satelite. Fm = 6.673e-11*7.353e+22 *1370 / 3.844e8^2 = 0.0455 N --- [F] = 7.353e+22 *0.0455 = 3.35 e+21 N === Answered by Pearlsawme - Wed Apr 21 03:47:39 2010 From Yahoo Answer Search: "spacecraft"  news.google.com Mon, 28 Jun 2010 23:11:28 GMT+00:00 Politics Daily (blog) A mention of the "X Prize" typically conjures up images of experimental, futuristic commercial spacecraft -- particularly the SpaceShipOne, which won the ... Foundation to Offer $10-Million Prize for Gulf Spill Fix Chronicle of Philanthropy (subscription) (blog) Next from X Prize: An Award for Cleaning up BP's Oil Spill? Discover Magazine (blog) Gulf Oil Spill Solutions ~ X Prize Considers a New Multimillion Dollar Oil ... PlanetSave.com (blog) CNN (blog) news.google.com Wed, 09 Jun 2010 14:06:05 GMT+00:00 FOXNews NASA's Cassini spacecraft snapped new photos of Saturn's biggest moon Titan during a recent flyby over the moon's northern pole that targeted the home of ... NASA discovered that life may exist on Titan, Saturn's largest moon Momento24 English Saturn's largest moon, Titan "Is ALIVE!" ... maybe Examiner.com Saturn Moon Has Potential for Life Gearlog (blog) Softpedia - The Clare Herald - Focus News news.google.com Wed, 30 Jun 2010 10:07:38 GMT+00:00 Jamaica Observer 1971: Three Soviet cosmonauts, in space for more than three weeks, are found dead when their Soyuz 11 spacecraft lands. A leak had caused their craft to ... From Google News Search: "spacecraft"  studioroosegaarde.net 988px x 1400px | 185.00kB [source page] Review Digital Home Peking CN 2007 selection Review Spacecraft Berlin DE Interview Emzin Ljubljana SLO Review  saturn.jpl.nasa.gov 720px x 589px | 206.00kB [source page] multimedia images jupiter flyby index cfm zdj cia z przelotu ko o Jowisza podsycaj wyobra ni i pokazuj czubek gory lodowej tego czego si mo na spodziewa po 1 lipca cassini http saturn jpl nasa gov spacecraft images spacecraft litho jpg misja HUYGENSa http www esa int export esaSC 120378 index 0 m html  anthonares.net 678px x 640px | 47.70kB [source page] Science Space wmap in my undergraduate cosmology class my professor introduced this satellite as having brought about quantitative cosmolgy While that s probably just a bit of an exaggeration this little From Yahoo Image Search: "spacecraft"  universetoday.com Nancy Atkinson Fri, 05 Sep 2008 18:33:10 GM This has to be the sexiest looking . spacecraft. ever built by humankind. No, it's not a starship or battle cruiser (although it does look a little like the. From Google Blog Search: "spacecraft" |
