ZAGI A-13

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ZAGI A-13
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Type: Gyroplane
Design country:

Soviet UnionSoviet Union Soviet Union

Manufacturer:

ZAGI

First flight:

1936

Number of pieces:

1 prototype

The ZAGI A-13 ( Russian ЦАГИ А-13 ) was a Soviet gyroplane from the 1930s.

history

The A-13 was developed from 1935 as a direct further development of the A-8 by WA Kuznetsov in the department for special constructions ( OOK ) within the ZAGI . It should have better performance data than its predecessor, which is why it was given an aerodynamically more favorable design and main wheels with cladding. In addition, attempts were made to save as much weight as possible. The V-position of the pair of wing stubs was reinforced and the leading edges swept. As with the A-8, it was controlled via the adjustable rotor head. The M-11 engine used received a Townend ring .

At the beginning of 1936, the A-13, equipped with a ski chassis due to the time of year, went into testing. Despite the measures taken to increase performance, the gyroplane achieved only slightly better values ​​than the A-8. In addition, the two test pilots Korsinschtschikow and Tschernawski found vibrations in the tail unit. Although these could be eliminated by strengthening the cell, this increased the take-off weight and led to even worse performance parameters. The tests were therefore terminated. Next, Kuznetsov turned to the successor A-15 , which should go into series production as a reconnaissance and fire control gyroplane. However, due to the crash of the A-12 tested at the same time , in which the pilot Korsyrov was killed, the gyroplane program of the ZAGI was ended, so that the A-13 was the last gyroplane model of Kuznetsov, which was still tested in flight.

Technical specifications

Parameter Data
crew 2
length 6.7 m
Rotor circle diameter 11.5 m
span 6.50 m
Wing area 5.6 m²
height 3.2 m
Takeoff route 30-40 m
Empty mass 540 kg
Takeoff mass 802 kg
Engine an air-cooled 5-cylinder radial engine Schwezow M-11
power 100 hp (74 kW)
Top speed 150 km / h
Minimum speed 45 km / h
Range 250 km
Summit height 3000 m
Flight duration 2 h

literature

  • Airplane types of the Soviet Union in Flieger Revue 7/1971
  • Who, when, what? in Flieger Revue 10/1984 and 1/1985