Technical data
Type MR-5, R-5A, '10'
Function Seaplane reconnaissater
Year 1931
Crew 2
Engines 500/680hp M-17B
Length 11.28m
Wingspan 15.5m
Wing area 50.20m2
Empty weight 2330kg
Loaded weight 3230kg
Wing Load (kg/m2) 64.4
Power load (kg/hp) 4.7
Speed at 0m 198km/h
Range 700km
Flight Endurance 4.5h
Ceiling 4350m
Climb
1000m 5.4min
2000m 12.0min
Armament
Guns 1*7.62mm PV-1 synchronized
(1...2)*7.62 DA on turret

MR-5, R-5A, "10" by N.N.Polikarpov, D.A.Mikhailov and V.B.Shavrov

28k drawing of R-5A from "History of aircraft construction in the USSR", Vol.1 p.451

Naval reconnaissater, quite straightforward conversion of the R-5 into floatplane. Wooden floats used same technology as Shavrov's Sh-2 flying boat.

The only modifications to the aircraft itself included doubled tailfin area and manual starter on the side of fuselage nose section. Traditional way to start engine by turning a propeller is quite complicated to perform staying on the water surface...

Flying characteristics were quite good for floatplane, despite it was 389kg heavier.

First MR-5 was built by TsKB in 1931.

Series production followed.

PredecessorsModifications

R-5

Sh-2
None
References:Links:
  • "History of aircraft construction in the USSR", Vol.1 pp.450-452;
  • MR-5, Polikarpov

  • Modified February 12, 1998
    and Sergey Andreev;
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