| Technical data | |
|---|---|
| Type |
MDR-4 ANT-27 |
| Function | Reconnaissance |
| Year | 1934 |
| Crew | ? |
| Engines | 3*750/830hp Mikulin M-34R |
| Length | 21.9m |
| Wingspan | 39.4m |
| Wing area | 177.5m2 |
| Empty weight | 10500kg |
| Loaded weight | 14660kg |
| Wing Load (kg/m2) | 82.6 |
| Power load (kg/hp) | 6.5 |
| Speed at 0m | 232km/h |
| Speed at ***m | 211km/h |
| Touchdown Speed | 100km/h |
| Turn time | 30sec |
| Range | 2130km 7h |
| Takeoff Roll | 30sec |
| Ceiling | 5450m |
| Climb | |
| 1000m | 4.6min |
| 2000m | 10.3min |
| 3000m | 18.0min |
| 4000m | 31.0min |
| 5000m | 55.0min |
MDR-4/ANT-27, A.N.Tupolev
|
Three-engined flying boat, development of the MDR-3 redesigned under A.N.Tupolev's supervision. Documents were transferred from I.V.Chetverikov team (Factory N°39) in February 1932, and in November 'new' design was ready.
Two tandem engine pairs of the MDR-3 were replaced by three (two tractor and one pusher) M-34R engines. Wing struts eliminated, wing area increased. Tail surfaces area was also increased, tail was raised like on the MK-1/ANT-22. The hull was almost identical to the MDR-3. Wing had mixed cover - aluminum on inner section, fabric on outer panels.
Aircraft was ready in March 1934. During factory tests it was crashed on takeoff, killing I.I.Pogosskij - head of the KOSOS Naval Brigade.
One built.
| Predecessor | Developments | |
|---|---|---|
 MDR-3 |
 MTB-1 ANT-27bis |
ANT-29 |
More Links...
- MDR-4
- ANT-27, Tupolev
- MDR-4, Tupolev
- "History of aircraft construction in the USSR", Vol.1 p.526;
References:
