vanguard 1造句

• Its payload, Vanguard 1, is the oldest satellite currently in orbit.
• The oldest object tracked is Object # 4 ( Vanguard 1 ) launched in 1958.
• In Alexander Bergs, Abby Cohn, and Jeff Good, eds ., Linguistic Vanguard 1.
• The success of Vanguard 1 led Hoffman to broaden the use of his solar cells into other products and applications.
• There are also inoperative satellites, including Vanguard 1, the oldest satellite currently in orbit, and over 16, 000 pieces of tracked space debris.
• Like its American counterpart, " Vanguard 1 ", " Sputnik 3 " had succeeded in making it into orbit during the IGY.
• On 17 March 1958, the US orbited its second satellite, Vanguard 1, which was about the size of a grapefruit, and remains in a orbit.
• Because of its symmetrical shape, Vanguard 1 was used by experimenters for determining upper atmospheric densities as a function of altitude, latitude, season, and solar activity.
• :Solar panels on spacecraft have been one of the first applications of photovoltaics since the launch of Vanguard 1 in 1958, the first satellite to use solar cells.
• The AN / FPS-16 was used to guide the first U . S . space satellite launches, Explorer 1 and Vanguard 1, at Cape Canaveral in 1958.
• NRL space scientists say that the " Vanguard 1 " program introduced much of the technology that has since been applied in later U . S . satellite programs, from rocket launching to satellite tracking.
• It was initially fueled by nitric acid and UDMH . An AJ10 engine was first fired in flight during the third Vanguard launch, on 17 March 1958, which successfully placed the Vanguard 1 satellite into orbit.
• But the next launch, Vanguard 1 on Vanguard TV4 was successful and put into orbit the fourth artificial Earth orbital satellite and the first satellite to be solar powered . Solar cells on Vanguard 1B satellite were manufactured by Bell Laboratories.
• After the United States succeeded in launching the Explorer 1 on Jan . 31, 1958, another try with the Vanguard 1 in March 1958 was smooth, and the satellite went into orbit, where it remains as the oldest man-made object circling Earth.
• Of course small missions of the Explorer program offer a lot of flexibility and launch opportunities, and the lessons learned can be applied to the same missions goals, but on a different mission ( Compare Vanguard 1 to Explorer 1 ) Just a couple years later two new X-ray polarimetry mission won a NASA award to develop a X-ray polarimetry missions.