Moskalyev SAM-2

The Moskalyev SAM-2, alternatively known as the MU-3, was a Soviet two seat introductory training flying boat tested in 1931. It was not chosen for production.

Design and development

The SAM-2 was an extensive modification of the Grigorovich MU-2, MU standing for morskoi uchyebnyi or marine trainer. It retained the pusher configuration biplane layout, its open, side-by-side cockpit and many components. New features were an improved hull underside, or planing bottom, smaller wings and a much lighter structure.

Operational history

It was completed in February 1931 and was officially tested in the spring. These led to its abandonment in favour of the parasol wing Shavrov Sh-2 amphibian which was built in large numbers, some active as late as 1964.

Specifications

Data from Osprey Encyclopedia of Russian Aircraft 1875-1995

General characteristics

• Crew: two
• Length: 8.0 m (26 ft 3 in) approx
• Wingspan: 10.5 m (34 ft 5 in) approx
• Wing area: 28 m² (300 sq ft) approx
• Empty weight: 650 kg (1,433 lb)
• Gross weight: 920 kg (2,028 lb)
• Powerplant: × Shvetsov M-11 five cylinder air-cooled radial (the M-11 subtype fitted is not known but powers were in the range 100–200 hp (75–149 kW))

Performance

• Maximum speed: 132 km/h (82 mph, 71 kn) at sea lefel
• Service ceiling: 2,300 m (7,500 ft)
• Time to altitude: 10 min to 1,000 m (3,300 ft)

References