Grigorovich M-11

M-11

Role	Single-seat fighter flying boat
National origin	Russia
Manufacturer	Shchetinin
Designer	Dmitry Pavlovich Grigorovich
First flight	1916
Number built	60+

The Grigorovich M-11 (or Shchetinin M-11) was a Russian single-seat fighter flying boat designed by Dmitry Pavlovich Grigorovich and built by Shchetinin

Design and development

Original conceived as a two-seater the prototype M-11 was built in 1916 at the Shchetinin factory in Petrograd. The M-11 was a biplane with a 100 hp (75 kW) Gnome Monosoupape rotary engine with a pusher propeller strut-mounted below the upper wing. The small number of two-seaters had a poor performance and were only used as trainers, Grigorovich developed a single-seat version powered a 110 hp (82 kW) Le Rhône engine and fitted with a forward firing machine gun in front of the cockpit. Originally 100 single-seat M-11s had been ordered but this was reduced to 60 as the aircraft had poor handling when landing or alighting on water. The M-11 were operated from snow and ice with twin skis fitted under the forward fuselage and a single ski under the tailplane.

To improve the water handling an improved variant was developed as the M-12 which had a re-designed hull and reduced loaded weight. Although the climb to height was improved the forward speed was 5 mph (8 km/h) less than the M-11 consequentially only a few M-12s were built.

Variants

M-11 (two-seat): Small numbers built for training use.
M-11 (single-seat): Production variant, 60 built.
M-12: Improved version.

Operators

Estonia

Estonian Air Force

Russia

Imperial Russian Navy

Soviet Union

Soviet Naval Aviation

Specifications (M-11 single-seater)

Data from ^[1]

General characteristics

Crew: 1
Length: 7.60 m (24 ft 11¼ in)
Wingspan: 8.75 m (28 ft 8½ in)
Wing area: 26 m² (279.87 ft²)
Empty weight: 676 kg (1490 lb)
Gross weight: 926 kg (2041 lb)
Powerplant: 1 × Le Rhône rotary piston, 82 kW (110 hp)

Performance

Maximum speed: 148 km/h (92 mph)
Endurance: 2 hours 42 min

Armament

1 x 7.62mm (0.3 in) Maxim machine-gun

References

Wikimedia Commons has media related to Grigorovich M-11.

↑ Orbis 1985, page 2013

Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions.
The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing.

Aircraft produced by Grigorovich

M-1 M-2 M-3 M-4 M-5 M-6 M-7 M-8 M-9 M-10 M-11 M-12 M-13 M-14 M-15 M-16 M-17 M-18 M-19 M-20 M-21 M-22 M-23 M-24 ROM-1 ROM-2 MK-1 MRL-1 MR-2 MR-3 MR-5 MUR-1 MU-2 MUR-2 I-1 I-2 I-Z IP-1 IP-2 IP-4 SUVP TB-5 TSh-1 TSh-2 LK-1 PB-1

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