High Quality Content by WIKIPEDIA articles! The NKL-26 was an armoured aerosan introduced by the Soviet Union during the Second World War, based on the earlier NKL-6 (OSGA-6). It was made of plywood and had a ten-millimetre armour plate on the front only, and was armed with a 7.62mm DT machine gun in a ring mount. It was powered by an M-11G aircraft engine.