Technical data
Type U-2(AP)
Function Agricultural
Year 1930
Crew 1
Engines 1*100hp M-11
Length 8.1m
Height ?m
Wingspan 11.4m
Wing area 33.1m2
Empty weight 656kg
Loaded weight 1000kg
Wing Load (kg/m2) 30.2
Power load (kg/hp) 10.0
Maximum Speed 140km/h
Landing Speed 67km/h
Landing Roll 100m
Takeoff Roll 120m
Range 200km
Flight Endurance 1.5h
Ceiling 3000m
Climb
1000m 10min
2000m 22min
Payload
Fuel+Oil 35+12kg
Cargo (chemicals) 250kg

U-2AP, U-2OP agricultural duster/dispenser by N.N.Polikarpov

45k b/w from "History of aircraft construction in the USSR", Vol.1 p.476

Agricultural variant of a successful biplane-trainer U-2. This variant was under development since very start of aircraft production. To accommodate agricultural gear U-2 was seriously redesigned:

Freed space was occupied by 200 to 250 kg capacity tank, which was modified several time (as well as the dispenser). In 1930- 1940 1235 'AP' variants were assembled. Production continued for some time after the War. Substantial amount of 'AP' were equipped as fluid dispensers and even for aerial seeding.

Flight performance was similar to original trainer U-2. Necessity to operate agricultural aircraft from unprepared fields under various weather conditions (wet) forced introduction of modified landing gear. Wheels were paired by wielding of a second rim to original wheel. Effective wheel width became 25cm, providing reliable support on wet soil.

Type 'AP' (with fuel tank in the upper wing and moved forward pilot's cockpit) became basic for many variants, including three-seater liaison aircraft, ambulance and limousine variants (may be found also here).

PredecessorsModifications

U-2

U-2(SP)

ReferencesLinks
  • "History of aircraft construction in the USSR", Vol.1 p.475-477;
  • ....

  • Created June 18, 1999 Back to
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