Grigorovich Stal-MAI
Moscow Aviation Institute · Soviet Union · first flew 1934 · light aircraft
The Stal-MAI, also called the RD-MAI, was a long-range experimental aircraft developed by the Moscow Aviation Institute under the supervision of Dmitry Grigorovich and later Pyotr Grushin.
Recognition (WEFT)
| W — Wings | Low-mounted, tapered |
|---|---|
| E — Engines | 1 × piston, nose-mounted |
| F — Fuselage | 11.5 m fuselage |
| T — Tail | Conventional |
WEFT is AircraftIQ's four-point recognition method — how it works.
Spot it by:
- Low-wing cantilever monoplane with a two-spar trapezoidal wing
- Braced empennage
- Two-seat cockpit enclosed by a single canopy
Except for the fabric-skinned control surfaces, it was made of steel, making it among the first aircraft in the world to be constructed mainly out of steel.
Specifications
- The Grigorovich Stal-MAI has a length of 11.5 m (38 ft).
- It has a wingspan of 18 m (59 ft).
- Typical crew: 2.
Figures are for the representative variant described above; marks differ. See how AircraftIQ sources figures.
History
It first flew on 19 September 1934. It was powered by a single 830 hp Mikulin M-34R liquid-cooled V12 engine with a gearbox driving a variable-pitch propeller, and the retractable landing gear was operated manually.
Variants
Only one Stal-MAI was built.
Where you'll see it
The Stal-MAI was damaged in an accident, after which it was repaired but the project was discontinued.
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