The THK-13 was an experimental tail-less glider built by the Turk Hava Kurumu Ucak Fabrikasi (THK) in Turkey in the late 1940s.
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 undercarriage 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.
[2] 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 a Focke-Wulf Fw 44.
Repairs were carried out and flight tests resumed, revealing poor yaw stability and heavy rudder forces.