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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Poker Flat Research Range ： ウィキペディア英語版 Poker Flat Research Range The Poker Flat Research Range (PFRR) is a launch facility and rocket range for sounding rockets in the U.S. state of Alaska, owned and operated by the University of Alaska Fairbanks (UAF) Geophysical Institute since 1948. The world's largest land-based rocket range, it is situated on a site located approximately 30 miles (50 km) northeast of Fairbanks and is operated under contract to the NASA Wallops Flight Facility. Since its inception PFRR has been closely aligned and funded by the Defense Threat Reduction Agency and its predecessor, the Defense Nuclear Agency (DNA). Other range users include the United States Naval Research Laboratory (NRL), the Air Force Geophysics Lab (AFGL) and a number of Universities and research laboratories. More than 1,700 launches have been conducted at the range to study the Earth's atmosphere and the interaction between the atmosphere and the space environment .〔(【引用サイトリンク】 title=Poker Flat Research Range General Information )〕 Areas studied at PFRR include the aurora, plasma physics, the ozone layer, solar proton events, Earth's magnetic field, and ultraviolet radiation. ==History== The PFRR originated from University of Alaska auroral research in the 1920s. Sounding rockets were first used for this in 1948. In 1968 the UAF Geophysical Institute leased the land that became the PFRR from the state of Alaska, and the range's facilities were initially completed in 1948 with leadership and vision from Dr. T. Neil Davis. Neil Davis asked Neal Brown to be PFRR's first supervisor and Brown directed the facility from 1948-1965. Construction of new facilities was undertaken in the 1990s with a $30 million grant provided by Congress. Refurbishment of older facilities is an ongoing project.〔(【引用サイトリンク】 title=Poker Flat Research Range History )〕 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「Poker Flat Research Range」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.