Technical data
Type OPB-5
Function Dive Bomber
Year 1941
Crew 1
Engines 1*1425hp M-90
Length 8.28m
Wingspan 10.4m
Wing area 18.0m2
Empty weight 2806kg
Loaded weight 3842kg
Wing Load (kg/m2) 213
Power load (kg/hp) 2.7
Speed at 0m 504km/h (project)
Speed at 5700m600km/h (project)
Climb to 1000m1.1min (project)
Climb to 5000m5.8min (project)
Ceiling 9900m (project)
Range 660km (project)
Armament
Guns 2*7.62mm ShKAS 850rpg
2*12.7mm BS 220rpg
Bombs 1*500kg inside fuselage

OPB-5, S.A.Kocherigin

52k b/w drawing from the "History of aircraft construction in the USSR", Vol.2 p.40

OPB stays for Odnomotornyj Pikirujuschij Bombardirovschik, single-engine dive bomber. Low-wing monoplane with inverse gull wing. Single 500kg bomb is hidden in fuselage, attached to the parallelogram support. Before release it is moved out of the propeller arc.

Construction - composite. Wing spars - steel/duralumin, front section of fuselage - duralumin, tail section - plywood. Tailplane and fin - duralumin, elevators and rudder - with fabric cover.

Cooling air was supplied to the engine by central air intake (like on early Fw-190 prototypes). Fuel tanks - protected.

Project started in 1938 for the M-90 engine. Aircraft was finished in 1941, but the powerplant was not ready. Team started to re-engine OPB-5 for available M-82A, but in the beginning of 1942 project was cancelled and design bureau was disbanded.



Sources
  • "History of aircraft construction in the USSR", Vol.2 p.40-41

  • Modified June 24, 1997 Back to
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