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
[edit]Originally 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 by 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 was 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
[edit]- M-11 (two-seat)
- Small numbers built for training use.
- M-11 (single-seat)
- Production variant, 60 built.
- M-12
- Improved version.
Operators
[edit]
Specifications (M-11 single-seater)
[edit]Data from [1]
General characteristics
- Crew: 1
- Length: 7.60 m (24 ft 11.25 in)
- Wingspan: 8.75 m (28 ft 8.5 in)
- Wing area: 26 m2 (279.87 sq ft)
- Empty weight: 676 kg (1,490 lb)
- Gross weight: 926 kg (2,041 lb)
- Powerplant: 1 × Le Rhône rotary piston , 82 kW (110 hp)
Performance
- Maximum speed: 148 km/h (92 mph, 80 kn)
- Endurance: 2 hours 42 minutes
Armament
- 1 x 7.62mm (0.3 in) Maxim machine-gun
See also
[edit]Related lists
References
[edit]
- ^ Orbis 1985, page 2013
Bibliography
[edit]- Gerdessen, Frederik. "Estonian Air Power 1918 – 1945". Air Enthusiast, No. 18, April – July 1982. pp. 61–76. ISSN 0143-5450.
- Kulikov, Victor (December 1996). "Le fascinante histoire des hydravions de Dimitry Grigorovitch" [The Fascinating History of the Seaplanes of Dimitry Grigorovitch]. Avions: Toute l'aéronautique et son histoire (in French) (45): 20–33. ISSN 1243-8650.
- Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions.
- The Illustrated Encyclopedia of Aircraft (Part Work 1982–1985). Orbis Publishing.