Schleicher ASK 21
The Schleicher ASK 21 is a two-seat glider produced by Alexander Schleicher GmbH & Co.
The glider is made out of glass-reinforced plastic. It' s designed for beginners.
But it' s also used for aerobatics and cross-country flying.
Design
The ASK 21 is designed by Rudolf Kaiser. He made it to replace the old ASK 13. It' s still in production to this day.
Something interesting is the T-shape tail that the glider has. Around a 1000 units where build.
It is the first glass-reinforced plastic glider made by Schleicher. It first flew in February of 1979.
In 2018 a new glider got introduced, the Schleicher ASK 21B.
Variants
ASK 21
Original glider
ASK 21 Mi
Self-launching glider
Vanguard TX. 1
The ASK-21 acquired by the UK Ministry of Defence for use by the Air Cadet organisations.
ASK 21B
Improved version of the original ASK 21. New features: automatic control connections, internal spin ballast, revised canopy, more effective ailerons.
Specifications (ASK 21)
General characteristics
Crew: 2
Length: 8. 35 m (27 ft 5 in) Wingspan: 17 m (55 ft 9 in) Height: 1. 55 m (5 ft 1 in) Wing area: 17. 95 m2 (193. 2 sq ft) Aspect ratio: 16: 1
Airfoil: FX S02-196 / FX 60-126
Empty weight: 360 kg (794 lb) Max takeoff weight: 600 kg (1,323 lb)
Performance
Stall speed: 65 km/h (40 mph, 35 kn) Never exceed speed: 280 km/h (170 mph, 150 kn) in smooth air
200 km/h (110 kn) in rough air
180 km/h (97 kn) on aero-tow
150 km/h (81 kn) on winch launch
g limits: +6. 5 -4 at 180 km/h (97 kn) Maximum glide ratio: 34 at 90 km/h (49 kn) Rate of sink: 0. 64 m/s (126 ft/min) at 67 km/h (36 kn) Wing loading: 33. 4 kg/m2 (6. 8 lb/sq ft)
See Also
IS 28 B2
Schleicher ASK 23
ZS Jezow PW-6U
Grob G103a Twin II
PZL Bielsko SZD-50
German aircraft