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Schleicher K7

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Wingspan
  
16 m

Designer
  
Length
  
8.15 m

Schleicher K7 GDCWJ Angus Gliding Club Schleicher K7 at Drumshade Photo ID

Manufacturer
  
Alexander Schleicher GmbH & Co

Schleicher k7 landing 92a


The Schleicher K7 Rhönadler, aka Ka-7 or K-7, is a West German high-wing, two-seat, glider that was designed by Rudolf Kaiser and produced by Alexander Schleicher GmbH & Co.

Contents

Schleicher K7 Schleicher K7 ZSGUR Brits Airfield FABS The G503 Album

Often referred to as the Ka-7 or K-7, the US Federal Aviation Administration type certificate officially designates it as the K7.

Design and development

Schleicher K7 cdnairplanepicturesnetimagesuploadedimages2

The K7 was intended as a two-place trainer with good performance, a rare combination in trainers of its time.

Schleicher K7 Schleicher K7 Photos AirplanePicturesnet

The K7 is constructed with a welded steel tube fuselage, covered in doped aircraft fabric covering. The wing is a wooden structure with a doped fabric covering and employs a Goettingen 533 (16%) airfoil at the wing root, transitioning to a Goettingen 533 (14%) section at the wing tip. The wing features powerful dive brakes. The landing gear is a fixed monowheel. The earlier Ka-2 variant has a plywood monocoque fuselage.

After 550 had been built, the K7 was superseded in production by the Schleicher ASK 13.

Schleicher K7 Schleicher K7 Photos AirplanePicturesnet

The K7 can be converted into a K7/13 with a conversion kit to lower the wing to the mid-wing position and installation of a one-piece canopy, rendering the aircraft similar to the ASK-13.

Operational history

Schleicher K7 Schleicher K7 Wikipedia

A K7 was flown to a new world multi-place glider speed record for flight around a 500 km (311 mi) triangle of 84 km/h (52 mph) in 1964 in South Africa.

Variants

Ka-2
Early version with a plywood monocoque fuselage
K7
Main production version with a steel tube fuselage.
K7/13
K7 converted to a mid-wing arrangement, plus a single piece canopy, to resemble an AS-K 13

Specifications (K7)

Data from Sailplane Directory, Soaring and FAA Type Certificate 7g3, The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde

General characteristics

  • Crew: one
  • Capacity: one passenger
  • Length: 8.15 m (26 ft 9 in)
  • Wingspan: 16.0 m (52 ft 6 in)
  • Wing area: 17.56 m2 (189.0 sq ft)
  • Aspect ratio: 14.6:1
  • Airfoil: root: Goettingen 533 (16%), mid: Goettingen 533 (14%), tip: Goettingen 533 (14%)
  • Empty weight: 282 kg (622 lb)
  • Max takeoff weight: 484.5 kg (1,068 lb)
  • Performance

  • Stall speed: 59.3 km/h (37 mph; 32 kn)
  • Never exceed speed: 200 km/h (124 mph; 108 kn)
  • Rough air speed max: 130 km/h (80.8 mph; 70.2 kn)
  • Aerotow speed: 130 km/h (80.8 mph; 70.2 kn)
  • Winch launch speed: 100 km/h (62.1 mph; 54.0 kn)
  • g limits: +4 -2
  • Maximum glide ratio: 26:1 at ~83 km/h (52 mph)
  • Rate of sink: 0.70 m/s (138 ft/min) at 67 km/h (42 mph)
  • Wing loading: 27.34 kg/m2 (5.60 lb/sq ft)
  • References

    Schleicher K7 Wikipedia