The THK-13 was an experimental tail-less glider built by the Turk Hava Kurumu Ucak Fabrikasi (THK) in Turkey in the late 1940s.
5-399: The THK-13 was a tail-less glider, built predominantly from wood with fabric covering, with the pilot sitting in a faired open cockpit on the centre-line at mid-chord. The aircraft was controlled through ailerons on the inner portion of the trailing edges with pitch control through elevators outboard of the fins, situated at approximately ¾-span giving yaw control and stability. The undercarriage
10-619: A Focke-Wulf Fw 44 . The first flight took place in mid 1948, flown by Kadri Kavukçu, lasting for around 30 minutes. Modifications were carried out before the next flight in August 1948, flown by Cemal Uygun. The aircraft took-off, but at 150–200 m (490–660 ft) the right wing dropped, caused by a control restriction, so Uygun carried out an emergency landing, with the aircraft suffering some damage. Repairs were carried out and flight tests resumed, revealing poor yaw stability and heavy rudder forces. The rudders were reduced in area shortly before
15-558: The THK-13 was exhibited at the 1949 Paris Air Show . Further development of the THK-13 was abandoned when THK's priorities were re-aligned. Data from General characteristics Performance THK-5 The THK-5 was a twin-engine aircraft designed by Stanisław Rogalski and built in Turkey in 1945 as an air ambulance. It was a conventional, low-wing cantilever monoplane of wooden construction throughout. The main units of
20-468: The tailwheel undercarriage retracted into the wing-mounted engine nacelles and the THK-5 could carry two stretcher cases plus a medical attendant. This was followed in production by a six-seat utility transport version designated THK-5A and three examples of an improved version of the 5A designated THK-10 . A single example of the type was exported, sold to Denmark. When THK was taken over by MKEK , this
25-429: Was of the mono-wheel type, common to many gliders, but with outrigger wheel struts in the lower fins keeping the aircraft level when on the ground. To validate the design a 10% scale model was attached to a THK-5 and used as a flying wind tunnel, to validate the design values. The THK-13 was initially planned to have a small piston engine or turbojet, but was completed as a glider, principally launched by aero-tow behind
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