Grigorovich M-5

Infobox Aircraft
name=M-5


caption=
type=Reconnaissance flying boat
manufacturer=Shchetinin
designer=Dmitry Pavlovich Grigorovich
first flight=1915
introduced=
retired=1920s
status=
primary user=Russian navy
more users=Finnish Air Force
produced=
number built=ca 300
unit cost=
developed from=Curtiss Model K
variants with their own articles=

Grigorovich M-5 (alternative designation Shch M-5, sometimes also Shchetinin M-5) was a successful Russian World War I-era two-bay unequal-span biplane flying boat with a single step hull, designed by Grigorovich. It was the first mass production flying boat built in Russia.

The aircraft designer Dmitry Pavlovich Grigorovich completed his first flying boat (the model M-1) in late 1913, and produced a series of prototypes, gradually improving the design, until the M-5 appeared in the spring of 1915, which was to be his first aircraft to enter series production, with at least 100 being produced, primarily to replace foreign built aircraft, including Curtiss Model K and FBA flying boats.Cite book |author="Durkota, Darcey & Kulikov" |authorlink=Kulikov |title=The Imperial Russian Air Service - Famous Pilots and Aircraft of World War 1 |publisher=Flying Machines Press |year=1995 |id= ISBN 0-9637110-2-4

The M-5 was of a wooden construction, the hull was covered in plywood and the wings and tailplane were covered in fabric. Aft of the step the hull tapered sharply into little more than a boom, supporting a characteristic single fin and rudder tail unit, which was braced by means of struts and wires. It was normally powered by a 100 hp Gnome Monosoupape engine mounted as a pusher between the wings, but some used 110 hp Le Rhône or 130 hp Clerget enginesCite book |author=Gunston, Bill |authorlink =Bill_Gunston|title=The Osprey Encyclopedia of Russian Aircraft from 1875 - 1995|publisher=Osprey Aerospace|year=1995
id= ISBN 1-85532-405-9. The pilot and the observer were accommodated side-by-side in a large cockpit forward of the wings, the observer provided with a single 7.62 mm Vickers machine gun on a pivoted mounting.

Most of the M-5s served in the Black Sea or in the Baltic, initially with the Imperial Russian naval air arm and later with both sides in the Russian Civil War. Some remained in service until the late 1920's as trainers, reconnaissance and utility aircraft.

One M-5 fell into Finnish hands when it was found drifting at Kuokkala in 1918. The aircraft was flown by the Finnish Air Force until 1919, when it sank.

Versions

* M-5 - main version
* M-10 - smaller version built in 1916. Gnome Monosoupape engine.
* M-20 - Two seat recommaisance. Le Rhone 89 kW (120 hp) engine, built in limited numbers from 1916

Operators

;FIN
*Finnish Air Force;RUS
*Russian Navy
*Red Army
*White Army;USSR`
*Red Army

pecifications (M-5)

aircraft specifications

plane or copter?=plane
jet or prop?=prop

ref=Thulinista Hornettiin

crew=2
capacity=
length main=8.60 m
length alt=28 ft 2 ½ in
span main=13.62 m
span alt=44 ft 8 ¼ in
height main= m
height alt= ft in
area main=37.90 m²
area alt=408 ft²
airfoil=
empty weight main=660 kg
empty weight alt=1,455 lb
loaded weight main=
loaded weight alt=
useful load main=
useful load alt=
max takeoff weight main=960 kg
max takeoff weight alt=2,116 lb
more general=

engine (prop)=Gnome Monosoupape
type of prop= rotary piston
number of props=1
power main=75 kW
power alt=100 hp
power original=

max speed main=105 km/h
max speed alt= 65 mph
cruise speed main=
cruise speed alt=
stall speed main=
stall speed alt=
never exceed speed main=
never exceed speed alt=
range main=
range alt= 4 h
ceiling main=3,300 m
ceiling alt=10,825 ft
climb rate main= 9.6 min to 1 km
climb rate alt= 3280 ft
loading main= 25 kg/m²
loading alt= 5.2 lb/ft²
thrust/weight=
power/mass main= 0.08 W/kg
power/mass alt= 0.05 hp/lb
more performance=

armament=1x 7.62 mm Vickers MG

avionics=

References

ources

Heinonen, Timo: "Thulinista Hornetiin - Keski-Suomen ilmailumuseon julkaisuja 3", Keski-Suomen ilmailumuseo, 1992, ISBN 951-95688-2-4

Durkota, Darcey & Kulikov: "The Imperial Russian Air Service - Famous Pilots and Aircraft of World War 1", Flying Machines Press, 1995, ISBN 0-9637110-2-4