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The Ross-Johnson RJ-5 is a single seat competition glider that was designed by Harland Ross and constructed partially by Ross and finished by Dick Johnson. The RJ-5 became one of the most famous gliders ever built when Johnson flew it in 1951, setting a new world distance record that endured for 13 years.〔Said, Bob: ''1983 Sailplane Directory, Soaring Magazine'', page 60. Soaring Society of America, November 1983. USPS 499-920〕 ==Design and development== The RJ-5 was conceived by Johnson, who contracted Ross to design and built a glider with record-setting performance. The aircraft utilizes a NACA 63 (2)-615 laminar flow airfoil and was one of the first gliders to achieve a 40:1 glide ratio.〔〔 Johnson asked Ross to build the RJ-5 in 1948. Ross completed the design work and much of the construction, with help from Stan Hall, but by 1950 the glider was still incomplete. Johnson took delivery of it, finishing work on it at Mississippi State University, and incorporated some design changes of his own.〔〔〔Johnson, Richard: ''Soaring Mail'', page 3. Soaring Society of America, November 1994.〕 The fuselage and tail were built from wood, with all-metal wings. The RJ-5 was designed to use a take-off dolly and land on its fixed skid. Johnson sold the aircraft to Graham Thompson, who in turn sold it to Brad Strauss. While Strauss owned it the aircraft was damaged and Strauss had Adrian Kisovec design a new metal fuselage and tail for the aircraft, after which it was designated the ''RJK-5'', acknowledging Kisovec's contributions. The aircraft was later sold to Dietrich Ennult and Rolf Bayer who modified it with a retractable monowheel landing gear from a Schweizer 1-34 and dive brakes, which somewhat lowered the performance. They subsequently donated it to the National Soaring Museum, who have since restored it to RJ-5 configuration with a new fuselage.〔〔 Only a single example was ever built and the aircraft is classified as an experimental amateur-built. Originally registered as ''N3722C'', the registration was later changed to ''N79T''.〔〔 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「Ross-Johnson RJ-5」の詳細全文を読む スポンサード リンク
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