| Ka-4 Rhönlerche II | |
|---|---|
| Role | Glider |
| National origin | West Germany |
| Manufacturer | Alexander Schleicher GmbH & Co |
| Designer | Rudolf Kaiser |
| First flight | 1955 |
| Introduction | 1955 |
| Status | Production completed |
| Number built | several hundred |
The Schleicher Ka-4 Rhönlerche II (English: Rhön Lark), sometimes called the KA-4 or even K 4, is a West German high-wing, strut-braced, two-seat glider that was designed by Rudolf Kaiser and produced by Alexander Schleicher GmbH & Co.[1][2][3]
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The Rhönlerche II was first flown in 1955. Its design goals were to produce a simple, inexpensive and robust two-seat trainer for school and club use. The design was a success and several hundred were constructed.[1][2]
The Rhönlerche II is constructed with a welded steel tube fuselage and a wooden wing and tail surfaces, all finished in doped aircraft fabric covering. The 13.0 m (42.7 ft) span wing is supported by single lift struts and employs a Goettingen 533 airfoil. The aircraft's landing gear is a fixed monowheel, with a nose skid.[1][2][4]
The aircraft was issued a US type certificate on 28 September 1960.[3]
The Ka-4 was widely used by clubs and schools in West Germany and also by Canadian military gliding clubs stationed in West Germany, including the Lahr Gliding Club at CFB Lahr. One of these aircraft was later shipped to Canada and operated by the Cold Lake Gliding Club at CFB Cold Lake and in July 2011 was owned by the Gravelbourg Gliding And Soaring Club, Gravelbourg, Saskatchewan.[2][5]
In July 2011 there were still five Ka-4s on the United States Federal Aviation Administration aircraft registry.[6]
Data from Sailplane Directory, Soaring and Type Certificate 7G6[1][2][3]
General characteristics
Performance
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