TsAGI A-13

Two-seat liaison machine developed from A-6 and A-8. Direct-control inclined rotor with folding blades, folding dihedralled wings and twin-finned tail, internal engine starter and clutch in drive for rotor before take-off. First flown on skis March 1936.

A-13
Engine: 1 x M-11
Rotor diameter: 11.5m
Wing area: 5.6sq.m
Weight empty: 540kg
Fuel+oil: 50kg
Weight loaded: 802kg
Max speed: 151km/h
Min speed: 45km/h
Ceiling: 3000m
Endurance: 2h
Range: 250km
Take-off run: 40m
Landing run: 0m