Technical data
Type PR-5 PR-5bis
Function Passenger
Year 1936 1936
Crew 1 1
Engines 500/715hp M-17F
Length 10.56m 10.56m
Wingspan 15.5m 15.5m
Wing area 50.2m2 50.2m2
Empty weight 2152kg 2200kg
Loaded weight 3242kg 3350kg
Wing Load (kg/m2) 64.5 66.8
Power load (kg/hp) 6.5 6.7
Speed at 0m 233km/h 233km/h
Speed at 3000m 216km/h -
Landing Speed 95km/h 95km/h
Landing Roll 14sec
260m
-
Takeoff Roll 17sec
330m
-
Range 1350km 1000km
Ceiling 6350m -
Climb
1000m 6.4min 6.4min
2000m 13min 13min
3000m 21min -
4000m 32.4min -
Payload
Seats 4

PR-5, PR-5bis N.N.Polikarpov, A.N.Rafaelants

36k b/w photo from "History of aircraft construction in the USSR", Vol.1 p.574;

Passenger development of the R-5 built in small series at GVF workshops. Design by engineer major A.N.Rafaelants differed by wide semi-monocoque fuselage, providing room for four passengers. Nose section with powerplant, wings, tail, landing gear remained unchanged. Pilot's cockpit was enclosed with sliding canopy.

Some problems were related to slightly rear location of the center of gravity. In modified PR-5bis upper wing was shifted backwards 100mm, but both aircraft had restrictions on rear seats load and sometimes it was necessary to keep some unused gasoline in tanks.

PR-5/PR-5bis were used on passenger airlines until 1941.

February 11 - March 19 1935: 13000km flight Moscow-Dickson by V.S.Molokov on the PR-5 registered CCCP-H-2 (or February 20 on the H-70?)

PredecessorsModifications

R-5
PR-12


References:
  • "History of aircraft construction in the USSR", Vol.1 p.574-575;

  • Modified February 03, 1998
    and Sergey Andreev;
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