Technical data
Type MDR-4
Function Reconnaissance
Year 1934
Crew ?
Engines 3*750/830hp Mikulin M-34R
Length 21.9m
Wingspan 39.4m
Wing area 177.5m2
Empty weight 10521kg
Loaded weight 16250kg
Wing Load (kg/m2) 91.6
Power load (kg/hp) 7.2
Speed at 0m 225km/h
Speed at ***m 200km/h
Touchdown Speed 105km/h
Range 2000km
Turn time 35sec
Ceiling 4470m
1000m 5.4min
2000m 13.0min
3000m 25.0min
Guns ?

MTB-1, ANT-27bis by A.N.Tupolev

28k at "History of aircraft construction in the USSR", Vol.1 p.526

Flying boat, the second MDR-4. Its construction was accelerated after crash of the first aircraft. Designation MTB was used to reflect aircraft naval torpedo-bomber assignment.

MTB-1 was ready for trials in January 1935, but various delays resulted in first taking place only in May. Aircraft was presented on State Acceptance Trials only on June 6...

Quite a poor performance was demonstrated. But such an aircraft was badly needed. Production started yet before all tests were performed. As a result service career of the MTB-1 started with the accident - first production aircraft crashed when fabric was torn of the wing. Later another crash took place...

Aircraft was in service for several years as a reconnaissater and torpedo-bomber, but production was very limited. Not a surprise.

15 built in 1936 and 10 in 1937.



More Links...
  • ANT-27, Tupolev
  • MDR-4, Tupolev

  • References:
  • "History of aircraft construction in the USSR", Vol.1 p.526;

  • Modified December 4, 1997
    by Alexandre Savine;
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