The KdK-01 is a test aircraft created by merso.aerospace in the 80's to test inverted swept wings , the original idea behind it was to have a super maneuverable aircraft.
it was going to be designated as K-01 (production version) bu it was never put into service due of how unstable it was , the danger of the plane entering into a flatspin was to high , due that the plane had 3 computers to asist the pilot during flight that helped the plane to not loose control, it had 3 just in case of a failure in another computer.

the plane was retired from testing in 1992 due of how dangerous it was for flying and also due merso wanted to focus more in the development of the K-1 stealth fighter and future stealth fighters, the 3 prototypes made are in the Mersorkan Air and Space museum in the city of Lignus