Esta información fué obtenida del Alex's Sailplane Directory:
Schempp-Hirth Standard Cirrus
Specifications
- Span 15.0 m./ 49.2 ft
- Area 10.00 sq. m. / 107.5 sq.ft.
- Aspect ratio 22.5
- Airfoil Wortmann FX-S-02-196 mod.
- Empty weight 220 kg. / 485 lb.
- Payload 170 kg. / 375 lb.
- Water ballast 60 kg / 132 lb
- Gross weight 390 kg. / 860 lb.
- Wing loading 39.0 kg. / sq. m. / 7.99 lb. /
sq. ft.
- Structure steel-tube center section
framework, fiberglass sandwich fuselage PVC foam core wings with fiberglass skin.
Performance
- L/D max. 36 90 kph / 49 kt / 56 mph
- Min. sink 0.57 m/s / 1.87 fps / 1.01 kt
- 70 kph / 38 kt / 44 mph
Other
- Country of origin Germany
- Designer Klaus Holighaus
- No. of seats 1
- No. built more than 700
- No. in the U.S. about 100
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. ATC