Antonov A-13

The Antonov A-13 was a small Soviet aerobatic sailplane flown in the 1950s and 1960s. It was a single-seat, all-metal mid-wing monoplane with a tadpole-like fuselage and a V-tail, developed from the Antonov A-11 and able to take that aircraft's longer-span wings as an option. It was stressed for aerobatics, with a g limit of plus 8.66 and minus 3.9. A motor glider version, the A-13M, carried a low-powered piston engine. In February 1962 an A-13 was fitted with a small turbojet and set a world airspeed record of 196 kilometres per hour for aircraft weighing up to 500 kilograms; this jet version was known as the An-13. The empty weight was 254 kilograms, the wingspan 12.1 metres, and the best glide ratio 25 to 1.