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Soviet Union's Lavochkin LaGG-3 fighter

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Lavochkin LaGG-3 fighter:
Soviet Union's Lavochkin LaGG-3 fighter
Aeronautics Aircraft Spotters' Handbook
Lavochkin LaGG-3 fighter:
Soviet Union's Lavochkin LaGG-3 fighter
Aeronautics Aircraft Spotters' Handbook

Design

Designed by Semyon Alekseievich Lavochkin, V. Gorbunov, and M. Gudkov.

Construction

The LaGG-3 and LaGG-1 were produced primarily out of wood. The control surfaces were light alloy with a fabric cover. Flaps were all metal to be as strong as possible.

LaGG-1 Deficiencies

Pilots complained that the controls felt heavy and didn't climb very well.

Engine

There engine was started by a Hucks starter. The propeller was constant speed. The liquid cooled engine lead to difficulties maintaining it in the field.

Wing

The wing had birch plywood skinning that was impregnated and bonded with phenolformaldehyde resin.

Cockpit

The cockpit didn't have a very good view for the pilot.

Tail wheel

The tail wheel was retractable.

Landing Gear

The landing gear on the LaGG-3 was retractable.

Prototype

The I-22 prototype first flew on March 30, 1939 / March 30, 1940.

The LaGG-1 was found to have handling and performance problems.

The LaGG-1 prototype, the I-22, was modified as the I-301 which lead to the LaGG-3.

The I-301 prototype first flew on June 14, 1940.

Production

The LaGG-1 started production in 1940. Production of the LaGG-3 ended in June 1942.

  • Lavochkin LaGG-1: 1, Several hundred
  • Lavochkin LaGG-3: 6,527
  • Total: 1,200, 6,528
    • Manufacturer: State Industries

Variants

  • Lavochkin I-22: Prototype of LaGG-1.
  • Lavochkin I-301: Prototype of LaGG-3.
  • Lavochkin LaGG-1:
  • Lavochkin LaGG-3: Weight was reduced. Fixed wing slats. Revised armament. New outer wing. More fuel tanks.
  • Lavochkin LaGG-3K-37: Experimental variant. Had 37 mm cannon.
  • Lavochkin LaGG-3 ??: Experimental variant. Had Klimov M-107A engine (1,650 HP).
  • Lavochkin LaGG-3 ??: Late models were able to carry drop tanks.

Usage

Invasion of the Soviet Union

Two regiments had the LaGG-1. There were 300 LaGG-3s available in June 1941.

Escorts

The LaGG-3s were relegated to being escorts for the Ilyushin Il-2s.

Captured by Finland

At least two were captured and used by Finland.

Captured by Japan

The Japanese had at least one LaGG-3.

Specifications

  Lavochkin LaGG-1
Type  
Crew  
Engine (Type) Klimov M105
Cylinders V 12
Cooling  
HP 1,050, 1,100
Propeller blades  
Fuel capacity  
Dimensions  
Span  
Length  
Height  
Wing area  
Weight  
Empty  
Loaded  
Performance  
Speed 373 mph, 376 mph
600 kph, 605 kph
Climb  
Service ceiling  
Range  
Armament 1: 20 mm
2: 12.7 mm
  Lavochkin LaGG-3
Type Fighter
Crew 1
Engine (Type) M-105
Klimov M-106P
Klimov M-105PF-1
Klimov M-105PF piston
Cylinders V 12, Inline
Cooling Liquid
HP M-105: 1,100
P: 1,100
PF: 1,240
Propeller blades 3, 3 metal variable pitch
Fuel capacity  
Dimensions  
Span 32' 1.75", 32' 2"
9.8 m
Length 28' 11", 29' 1", 29' 1.25", 29' 2", 29' 2.5"
8.81 m, 8.87 m, 8.9 m
Height 8' 10", 14' 5"
2.69 m, 2.7 m, 3.3 m
Wing area 188 ft2 , 188.4 ft2 , 188.5 ft2
17.5 m2 , 17.51 m2
Weight  
Empty 5,776 lb
2,620 kg
Loaded 7,032 lb, 7,231 lb, 7,275 lb
3,280 kg, 3,300 kg
Performance  
Speed 300 mph
Speed at sea level 307 mph
494 kph
Speed @ 11,975' /
3,650 m
348 mph
560 kph
Speed @ 16,400' /
5,000 m
348 mph
560 kph
Speed @ 16,405' /
5,000 m
348 mph, 357 mph
560 kph, 575 kph
Climb 2,950'/minute
900 m/minute
Climb to 16,400' /
5,000 m
5.85 minutes
Climb to 16,405' /
5,000 m
5.9 minutes
Service ceiling 29,500', 29,530', 31,495', 31,500', 31,825'
9,000 m, 9,600 m, 9,700 m
Range 404 miles
650 km
Armament 1: Cannon
1: 20 mm
2: MG
3: MG
2: 12.7 mm UBS
2: 7.62 ShKAS MG
Propeller hub 1: 20 mm
1: 20 mm ShVAK
120 rounds
OR 1: 23 mm
Above engine 2: 12.7 mm
2: 12.7 mm BS
220 rounds each
OR 2: 7.62 mm MG
Rockets 6: 3.23"
6: 82 mm
OR  
Bombs - under wings 441 lb
2: 220 lb
4: 110 lb
200 kg
2: 100 kg
4: 50 kg
Bombs 440 lb

Sources:

  1. Aircraft of WWII, General Editor: Jim Winchester, 2004
  2. Fighting Aircraft of World War II, Editor: Karen Leverington, 1995
  3. The Encyclopedia of Weapons of World War II, General Editor Chris Bishop, 1998
  4. Aircraft of WWII, Stewart Wilson, 1998
  5. World War II Airplanes Volume 2, Enzo Angelucci, Paolo Matricardi, 1976
  6. Aeronautics Aircraft Spotters' Handbook, Ensign L. C. Guthman, 1943
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