Grigorovich M-11

__NOTOC__ Infobox Aircraft
name=M-11


caption=
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

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 100hp (75kW) 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 110hp (82kW) 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 uner 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.

pecifications (M-11 single-seater)

aerospecs
ref= [Orbis 1985, page 2013]
met or eng?= met

crew=1
capacity=
length m=7.60
length ft=24
length in=11¼
span m=8.75
span ft=28
span in=8½
swept m=
swept ft=
swept in=
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rot dia m=
rot dia ft=
rot dia in=
dia m=
dia ft=
dia in=
width m=
width ft=
width in=
height m=
height ft=
height in=
wing area sqm=26
wing area sqft=279.87
swept area sqm=
swept area sqft=
rot area sqm=
rot area sqft=
volume m3=
volume ft3=
aspect ratio=
empty weight kg=676
empty weight lb=1490
gross weight kg=926
gross weight lb=2041
lift kg=
lift lb=

eng1 number=1
eng1 type=Le Rhône rotary piston
eng1 kw= 82
eng1 hp= 110
eng1 kn=
eng1 lbf=
eng1 kn-ab=
eng1 lbf-ab=
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max speed kmh=148
max speed mph=92
max speed mach=
cruise speed kmh=
cruise speed mph=
range km=
range miles=
endurance h= 2
endurance min= 42
ceiling m=
ceiling ft=
glide ratio=
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climb rate ftmin=
sink rate ms=
sink rate ftmin=

armament1=1 x 7.62mm (0.3 in) Maxim machine-gun
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ee also

aircontent
see also=
related=
similar aircraft=
sequence=
lists=
*List of seaplanes and flying boats

References

*
*cite book |last= |first= |authorlink= |coauthors= |title= The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985)|year= |publisher= Orbis Publishing|location= |issn=|pages=