The Kolesnikov-Tsybin KC-20 or KTs-20 (Russian: КЦ-20) was a Soviet light troop military glider of World War II.
Shortly after the German attack in 1941, Soviet headquarters realized a need for transport gliders and ordered the development of several designs.
It was quite successful, its major drawback was a lack of a big cargo hatch, therefore guns could by only carried in parts.
Like Antonov A-7 and Gribovski G-11, they were mainly used for supplying Soviet partisans with provisions, weapons, equipment and trained men, in night flights.
Data from Fighting Gliders of World War II[1]General characteristics Performance