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Schleicher ASH 25

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Schleicher ASH 25
Alexander Schleicher ASH 25 842829 Marc Michel.jpeg
An ASH 25 at Sion, Switzerland.
Type designation ASH 25
Competition class Open
Number built 250+
Crew 2
Length 8.97 m
Height 1.7 m
Cockpit width 0.71 m
Cockpit height 0.98 m
Wingspan 25 / 25.6 / 26 m
Wing area 16.31 / 16.46 / 16.62 m²
Aspect ratio 38.32 / 39.82 / 40.67
Wing profile: HQ 17 and DU 84-132/V3
Empty mass 470 / 478 / 484 kg
Water ballast 120 kg
Maximum mass 750 kg
Minimum wing loading 34 kg/m²
Maximum wing loading 46.0 / 45.6 / 45.1 kg/m²
Maximum speed 280 km/h
Stall speed 75 km/h at 34 kg/m²
Minimum sink rate 0.42 m/s at 34 kg/m²
Best glide ratio ca. 58 / 60 / 60
Roll rate 6.5 s at 95 km/h
(-45° to 45°)
Engine type Midwest (Wankel rotary)
Power 41 kW at 7750 rpm


The ASH 25 is a two-seater high performance Open Class glider manufactured by Alexander Schleicher, originally with a 25 metre wing span. Designer Martin Heide (the 'H' in the type designation) combined the wing of the World Championship winning single-seater Schleicher ASW 22 with fuselage derived from the Akaflieg Stuttgart FS-31 which had particularly low drag. The prototype was designated 'AS 22-2'. The span was increased in later versions to 25.6 or 26 metres with winglets.

A 'turbo' version was also developed, the ASH 25E, followed by the self-launching ASH 25Mi with a large retractable propeller and a Wankel engine.


Sources

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