Lavochkin La-176
1948
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Lavochkin La-176

Combining a fuselage essentially similar to that of the Lavochkin La-168 with wings sweptback 45 at quarter-chord, the La-176 was flown in September 1948 with a 2270kg RD-45F turbojet, and armament comprising one 37mm N-37 and two 23mm NS-23 cannon. Re-engined with a Klimov VK-1 turbojet of 2700kg, the La-176 was claimed to have exceeded Mach=1.0 in a dive from 9050m to 6000m on 26 December 1948. It was initially believed that an ASI error had been involved, but the process was repeated six times during January 1949, 1105km/h being recorded at 7500m, this being equivalent to Mach=1.02. The La-176 thus became the first Soviet aircraft to achieve supersonic flight. Further development was abandoned shortly afterwards when the canopy locks failed at high speed, resulting in test pilot V Sokolovsky losing his life.

Lavochkin La-176


Specification 
 WEIGHTS
    Take-off weight4631 kg10210 lb
    Empty weight3111 kg6859 lb
 DIMENSIONS
    Wingspan8.59 m28 ft 2 in
    Length10.97 m36 ft 0 in
    Wing area18.25 m2196.44 sq ft
 PERFORMANCE
    Max. speed1043 km/h648 mph
    Range1000 km621 miles

3-View 
Lavochkin La-176A three-view drawing (1657 x 1093)

Comments
napo, 20.06.2011

shortly afterwards when the canopy locks failed at high speed, resulting in test pilot  V Sokolovsky losing his life.

, 20.06.2011

Lavochkin La-176

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