Grigorovich M-11
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| {{Infobox aircraft begin
|name=M-11 |image=Grigorovič M-11.jpg |caption= }}{{Infobox aircraft type |type=Single-seat fighter flying boat |national origin=Russia |manufacturer=Shchetinin |designer=Dmitry Pavlovich Grigorovich |first flight=1916 |introduced= |retired= |status= |primary user= |more users= |produced= |number built=60+ |variants with their own articles= }} |
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
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
;M-11 (two-seat)
:Small numbers built for training use.
;M-11 (single-seat)
:Production variant, 60 built.
;M-12
:Improved version.
Operators
Specifications (M-11 single-seater)
{{Aircraft specs
|prime units? = met
|crew=1
|length m=7.60
|length ft=24
|length in=11.25
|span m=8.75
|span ft=28
|span in=8.5
|wing area sqm=26
|wing area sqft=279.87
|empty weight kg=676
|empty weight lb=1490
|gross weight kg=926
|gross weight lb=2041
|eng1 number=1
|eng1 name=Le Rhône rotary piston
|eng1 kw=82
|eng1 hp=110
|max speed kmh=148
|max speed mph=92
|endurance=2 hours 42 minutes
|armament = *1 x 7.62mm (0.3 in) Maxim machine-gun
}}
See also
{{aircontent
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|similar aircraft=
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References
{{commons category|Grigorovich M-11}}
{{reflist}}
Bibliography
- Gerdessen, Frederik. "Estonian Air Power 1918 – 1945". Air Enthusiast, No. 18, April – July 1982. pp. 61–76. {{ISSN|0143-5450}}.
- {{cite journal |last1=Kulikov|first1=Victor|title=Le fascinante histoire des hydravions de Dimitry Grigorovitch|journal=Avions: Toute l'aéronautique et son histoire |date=December 1996 |issue=45 |pages=20–33 |trans-title=The Fascinating History of the Seaplanes of Dimitry Grigorovitch|language=French |issn=1243-8650}}
- {{cite book |last= Taylor |first= Michael J. H. |title=Jane's Encyclopedia of Aviation |year=1989 |publisher=Studio Editions |location=London }}
- {{cite book |title= The Illustrated Encyclopedia of Aircraft (Part Work 1982–1985)|publisher= Orbis Publishing}}
{{Grigorovich aircraft}}
Category:1910s Russian fighter aircraft
Category:Single-engined pusher aircraft