Specifications – Discus A, B, BT, BM, CS (WL)
Span 15.0 m./ 49.2 ft
Area 10.58 sq. m. / 113.9 sq.ft.
Aspect ratio 21.3
Empty weight 228 kg. / 503 lb.
Payload 297 kg. / 654 lb.
Water ballast 180 kg / 397 lb
Gross weight 525 kg. / 1,157 lb.
Wing loading 49.62 kg. / sq. m. / 10.16 lb. / sq. ft.
Engine (Discus bT) (15,3 kW / 20,5 bhp Solo 2350)
Engine (Discus BM) (35 kW/ 47 bhp Rotax 463)
Structure composite and steel tube
L/D max. 43 100 kph / 54 kt / 62 mph
Min. sink 0.59 m/s / 1.94 fps / 1.15 kt
78 kph / 42 kt / 49 mph
Country of origin Germany
Designer Klaus Holighaus
No. of seats 1
No. in the U.S. about 60
The Standard Class Discus A first flew in 1984 using the fuselage and tail unit of the original Ventus with a new unflapped wing. The wing planform is noteworthy as being the first production sailplane to have the now common distictive shape where the leading edge sweepback increases towards the tip, establishing a worldwide trend in wing planforms. Approach control is by top surface double panel schempp-hirth airbrakes. There is a 5kg. / 11 lb. Water ballast tank in the fin for trimming purposes when the main wing mounted ballast tanks are used. The Discus B incorporates the longer fuselage (about 23 cm/ 9 in) and roomier cockpit of the Ventus B.
The sustainer engined Discus bT, which first flew in 1988, has a retractable mast mounted15kW/ 21 bhp Solo engine with a Oehler folding prop.
The self-launching Discus bM has a Rotax engine in the fusealage with a retractable mast mounted prop.
The Discus won the first three places in the Standard Class at the 1985 World Championships at Rieti, Italy, 12 out of the first 15 at the 1987 Worlds at Benalla, Austria, and again the first three places at the 1989 Worlds at Wiener Neustadt, Austria. Up to 1995 the Discus won all first places in the world championships.
The Discus CS is built under license in the Czech Republic by Orlican. Specifications are for the Discus A.
The winglets (WL) is an option that was developed in later stadium for further improvement of the climb performance.