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Schleicher Ka 3 - Wikipedia

From Wikipedia, the free encyclopedia

Ka 3

Prototype Ka 3 in 1954
Role	Single seat training glider Type of aircraft
National origin	Germany
Manufacturer	Alexander Schleicher Segelflugzeugbau
Designer	Rudolf Kaiser
First flight	1954
Number built	15

The Schleicher Ka 3 or Kaiser Ka 3, is a 1950s single seat training glider, mostly sold in kit form.

Design and development

The Ka 3 and its predecessor the Ka 1 were mostly sold as kits for home assembly. Apart from their fuselages the two types are very close in appearance, simplicity, weight and performance. They share a round tipped high wing with constant chord and no sweep, mounted with 2.5° of dihedral and braced with a single lift strut on each side from the lower fuselage to the wing at about one third span. Plain, constant-chord ailerons reach almost from the tips to about mid span and upper wing spoilers are placed at mid chord, inboard of the ailerons. Both have 37° butterfly tails with straight leading edges and round tips and trailing edges.^[1]

The Ka 1 has a ply-covered, rounded wooden-framed fuselage but that of the Ka 3 is more angular, steel tube-framed, fabric covered and slightly longer. Both have a simple, deep, sprung landing skid reaching from the nose to under the trailing edge of the wing, assisted by a tail bumper. Their cockpits are under the wing leading edge, into which the clear canopy extends.^[1]

The Ka 1 first flew in 1951 and ten were built;^[2] the Ka 3 followed in 1954 with fifteen eventually completed.^[1] One Ka 1 and two Ka 3s remained on the German civil aircraft register in 2010.^[3] One is one display at the Gliding Heritage Centre.

Variants

Ka 1 Rhönlaus: Original version with rounded, wooden fuselage.^[1] First flown 1951. 10 built.^[2]
Ka 3: Development with a slightly longer, fabric-covered steel-tube fuselage. Performance and weights as Ka 1. First flown in 1954. 15 produced.^[1]

Specifications (Ka 3)

Data from The World's Sailplanes pp.83-5^[1]

General characteristics

Crew: One
Length: 5.45 m (17 ft 11 in)
Wingspan: 10.00 m (32 ft 10 in)
Wing area: 9.9 m² (107 sq ft)
Aspect ratio: 10.1
Airfoil: Göttingen 549
Empty weight: 100 kg (220 lb) equipped
Max takeoff weight: 195 kg (430 lb)
Wing loading: 19.7 kg/m² (4.04 lb/sq ft) maximum

Performance

Maximum speed: 160 km/h (99 mph, 86 kn) placard, smooth air. All performance figures at a flying weight of 180 kg (397 lb)
Maximumun speed, placard, rough air: 100 km/h (62 mph; 54 kn)
Maximumun aero-tow speed: 100 km/h (62 mph; 54 kn)
Maximumun winch launch speed: 90 km/h (56 mph; 49 kn)
Stall speed: 53 km/h (33 mph, 29 kn)
Maximum glide ratio: best, 17.5:1 at 75 km/h (47 mph; 40 kn)
Rate of sink: 1.0 m/s (200 ft/min) at 65 km/h (40 mph; 35 kn)

References

Wikimedia Commons has media related to Schleicher Ka 3.

^ ^a ^b ^c ^d ^e ^f Wilkinson, K.G.; Brooks, Peter; Shenstone, B.S. (1958). The World's Sailplanes - Die Segelflugzeuge der Welt - Les Planeurs de le Monde (in English, German, and French). Vol. I. Organisation Scientifique et Technique International de Vol à Voile (OSTIV) & Schweizer Aero-Revue. pp. 81, 83-5146-9.
^ ^a ^b "Kaiser Ka 1". Retrieved 17 November 2012.
^ Partington, Dave (2010). European registers handbook 2010. Air Britain (Historians) Ltd. ISBN 978-0-85130-425-0.

v t e Schleicher gliders
Wooden construction pre-World War II	Condor Hols der Teufel Poppenhausen Rhönadler Rhönbussard
Wooden construction (Rudolf Kaiser)	Ka 1 Rhönlaus Ka 2 Rhönschwalbe Ka 3 Ka 4 Rhönlerche II Ka 6 Rhönsegler K7 K7/13 K 8 Ka-9 K 10 ASK 13 ASK 14 ASK 16 ASK 18
GRP construction (Rudolf Kaiser)	ASK 21 ASK 23
GRP construction (Gerhard Waibel)	ASW 12 ASW 15 ASW 17 ASW 19 ASW 20 ASW 22 ASW 24 ASW 27 ASW 28
GRP construction (Martin Heide)	ASH 25 ASH 26 ASH 30 ASH 31
GRP construction (Michael Greiner)	ASG 29 ASG 32
GRP construction - unspecified designer	AS 33 AS 34 AS 35

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