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''FlightGear Flight Simulator'' (often shortened to ''FlightGear'' or ''FGFS'') is a free, open source multi-platform flight simulator developed by the ''FlightGear'' project since 1997. David Murr started the project on April 8, 1996. The project had its first release in 1997 and continued in development, the most recent release being version 3.4 in February 2015. It has specific builds for a variety of operating systems including Microsoft Windows, Mac OS X, Linux, IRIX, and Solaris. ''FlightGear'' code is released under the terms of the GNU General Public License, thus being free software. Some commercial products—Flight Pro Sim, Pro Flight Simulator, and others—are copies of old versions of ''FlightGear''. They are not endorsed by the ''FlightGear'' project. ==History== ''FlightGear'' started as an online proposal in 1996 by David Murr. He proposed a new flight simulator developed by volunteers over the Internet as alternative to proprietary, available simulators like the Microsoft Flight Simulator. The flight simulator was created using custom 3D graphics code. Development of an OpenGL based version was spearheaded by Curtis Olson starting in 1997. ''FlightGear'' incorporated other open-source resources, including the LaRCsim flight model from NASA, and freely available elevation data. The first working binaries using OpenGL came out in 1997. Enthusiastic development of newer versions for several years resulted in progressively more stable and advanced versions. By 2001, the team was releasing new beta versions regularly. Later in the decade, the rate of final public releases slowed, but had larger amounts of content. By 2005, the maturity of software led to more widespread reviews, and increased popularity. 2007 marked a formal transition out of beta development with the release of version 1.0.0. In 2008, version 1.9.0 of ''FlightGear'' included a major change from PLIB to OpenSceneGraph, widely expanding ''FlightGear''s graphical capabilities and among others adding multi-screen support. Several more versions with major improvements were released through the years. In June 2014 Honda lawyers issued a takedown request in which they claimed that the HondaJet model in the simulator infringes on Honda's trademarks. Subsequently, HondaJet became the first model removed from the simulator due to legal reasons. 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「FlightGear」の詳細全文を読む スポンサード リンク
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