Grigorovich M-11

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.

Grigorovich M-11
Class Aircraft
Type Fighter
Manufacturer Shchetinin
Origin Russia (USSR)
Country Name Origin Year
Russia (USSR) 1916
Country Name Operational Year Retirement Year
Estonia View
Russia (USSR) View
ManufacturerName Production From Production To Quantity
Shchetinin 60 View

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. 

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


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

End notes