Schleicher ASH 25

Design and development

Designer Martin Heide (the 'H' in the type designation) combined the wing of the World Championship winning single-seater Schleicher ASW 22 with a 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 25 Mi with a large retractable propeller and a Wankel engine. It was superseded in production by the ASH 30.

Variants

ASH 25

A 25m Open class glider, 25.6m or 26m wingspan when fitted with option winglets.

ASH 25E

Self-sustaining version (not self-launching) with a 24 hp Rotax 275 engine

ASH 25M

Self-launching version with a 60 hp AE50R engine. Both the ASH 25 and ASH 25E can be converted to the ASH 25M by the manufacturer.

ASH 25 Mi

Self-launching version with a 60 hp IAE50R-AA engine. The ASH 25, ASH 25E and ASH 25M can be converted to the ASH 25Mi by the manufacturer.

ASH 25J

Self-launching version with a jet engine

ASH 25EB

Self-launching version with a Rotax 535C engine, 27m wingspan and one-piece canopy

ASH 25EB/28

Self-launcher with one-piece canopy and 28m wingspan

Specifications (with 25.6 metre wings)

Data from

General characteristics

Crew: 2

Length: 8.97 m (29 ft 5 in)

Wingspan: 25.6 m (84 ft 0 in)

Height: 1.7 m (5 ft 7 in)

Wing area: 16.5 m² (178 sq ft)

Aspect ratio: 39.8

Airfoil: root:HQ 17; tip:DU 84-132/V3

Empty weight: 478 kg (1,054 lb)

Max takeoff weight: 750 kg (1,653 lb)

Water ballast: 120 l (32 US gal; 26 imp gal)

Performance

Never exceed speed: 280 km/h (174 mph; 151 kn)

Maximum glide ratio: ca. 60:1

Rate of sink: 0.42 m/s (83 ft/min)