Sailplane: Standard Cirrus

Registration: OX

Manufactured by: Schempp-Hirth

Home Club/Hangar: Geelong Gliding Club

Known Modifications: Custom Winglets

Notes: Although the Standard Cirrus was a follow-on to the original Open Class Cirrus design, it is completely different aircraft, with a 15 m. wing with airbrakes on the top surface only, an all-moving T-tail and a steel tube skeleton in the wing-fuselage center section. A Cirrus won the U.S. Standard Class Nationals in 1969. Despite a claimed L/D ratio of 38.5, measured performance by both Paul Bikle and Ricard H. Johnson demonstrated less than 36. In 1975 an improved version called the Cirrus 75 was introduced with redesigned wing fairings, larger airbrakes and other improvements. 200 were manufactured under license by Grob in Germany. After production in Germany ceased, the Standard Cirrus was manufactured in Serbia, Yugoslavia by Jastreb Fabrika Aviona Jedrilica (formerly VTC), first the Cirrus 75 version, and subsequently a modified Cirrus 81 with roomier cockpit and variable incidence tailplane.

More information:

http://www.schempp-hirth.com/index.php?id=12&L=1

http://www.sailplanedirectory.com/schempp.htm#Cirrusstd

http://www.standardcirrus.org/

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