翻訳と辞書 Words near each other ・ Pioneer Middle School ・ Pioneer mine ・ Pioneer Montessori Inter College ・ Pioneer Monument ・ Pioneer Monument (Houston) ・ Pioneer Monument (San Francisco) ・ Pioneer (video game) ・ Pioneer 0 ・ Pioneer 1 ・ Pioneer 1 (land speed racer) ・ Pioneer 10 ・ Pioneer 11 ・ Pioneer 12 ・ Pioneer 2 ・ Pioneer 2M ・ Pioneer 3 ・ Pioneer 4 ・ Pioneer 5 ・ Pioneer 6, 7, 8, and 9 ・ Pioneer Academy ・ Pioneer Academy, Puthimari ・ Pioneer Acres Museum ・ Pioneer Aerospace Corporation ・ Pioneer Amphitheatre ・ Pioneer and Endicott Buildings ・ Pioneer and Fayette Railroad ・ Pioneer and Military Memorial Park ・ Pioneer anomaly ・ Pioneer Arts Center of Easthampton ・ Pioneer Athletic Conference Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Pioneer 3 ： ウィキペディア英語版 Pioneer 3 Pioneer 3 was a spin stabilized spacecraft launched at 05:45:12 UTC on 6 December 1958 by the U.S. Army Ballistic Missile Agency in conjunction with the National Aeronautics and Space Administration, using a Juno II rocket. This spacecraft was intended as a lunar probe, but failed to go past the Moon and into a heliocentric orbit as planned, but did reach an altitude of 102,360 km before falling back to the Earth. The revised spacecraft objectives were to measure radiation in the outer Van Allen radiation belt using two Geiger-Müller tubes and to test the trigger mechanism for a lunar photographic experiment. == Spacecraft design == Pioneer 3 was a cone-shaped probe 58 cm high and 25 cm diameter at its base. The cone was composed of a thin fiberglass shell coated with a gold wash to make it electrically conducting and painted with black and white stripes to maintain the temperature between 10 and 50 degrees Celsius. At the tip of the cone was a small probe which combined with the cone itself to act as an antenna. At the base of the cone a ring of mercury batteries provided power. A photoelectric sensor protruded from the center of the ring. The sensor was designed with two photocells which would be triggered by the light of the Moon when the probe was within about 30,000 km of the Moon. At the center of the cone was a voltage supply tube and two Geiger-Müller tubes. A transmitter with a mass of 0.5 kg delivered a phase-modulated signal of 0.1 W at a frequency of 960.05 MHz. The modulated carrier power was 0.08 W and the total effective radiated power 0.18 W. A despin mechanism consisted of two 7 gram weights which could be spooled out to the end of two 150 cm wires when triggered by a hydraulic timer 10 hours after launch. The weights would slow the spacecraft spin from 400 rpm to 6 rpm and then weights and wires would be released. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pioneer 3」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.