The Lavochkin La-7 was an improved variant of the preceding La-5 form. It incorporated a new Shvetsov engine, uprated to increased the mount's maximum speed though, on the whole, it remained largely the same aircraft with a new designation. Other subtle changes were incorporated based on combat actions with the La-7 and first flight of a modified prototype was in February of 1944. Service entry then followed rather quickly in September of 1944. The La-7 led a relatively short operational service life though, being retired during 1950 - the jet age now taking hold. Production of La-7 fighters numbered 5,753 units.
As completed, the La-7 sported similar lines to the original La-5. The cockpit was heavily framed and situated at amidships. The mainplanes were set under and ahead of the cockpit floor. The engine was shrouded over in a rounded cowling with a large spinner capping the three-bladed propeller unit. The tail was tapered and formed the curved vertical fin which mounted mid-set tailplanes on either side. The fuselage spine was only slightly raised to degrade vision to the rear but required for the internal volume it allowed engineers. The undercarriage remained a tail-dragger arrangement with two main legs and a tailwheel - all retractable.
Power was through a single Shvetsov ASh-82FN 14-cylinder air-cooled radial piston engine of 1,650 horsepower. This drove a three-bladed VISh-105V-4 series propeller blade assembly at front. Maximum speed reached 411 miles per hour of late-war models and ranges out to 415 miles. Service ceiling was 34,300 feet and rate-of-climb a strong 3,095 feet-per-minute.
Standard armament began as 2 x 20mm ShVAK cannons with 200 rounds afforded each gun. This could be substituted with 3 x 20mm Berezin B-20 series cannons with 100 rounds per gun. As with the La-5 before it, the La-7 retained performance qualities in the low-to-medium altitude range which meant it a stable platform for the fighter-bomber role as well as a fighter. For this role, the La-7 could also be outfitted with air-to-surface rockets and up to 440lbs of conventional drop ordnance.
Beyond the Soviet Air Force, the La-7 was only utilized by the Czechoslovakian Air Force.
The only definitive production variant became the La-7UTI which served as a trainer model. This incorporated a second seat for the instructor at the expense of internal volume. 584 of the type were produced into 1947. Other one-off variants included the La-7TK used in testing a turbosupercharger development and the La-7R to test a rocket motor propulsion system. The La-7PVRD was similar in scope and used in testing of a pair of ramjet installations under the wings. Another one-off model became the La-7/M-71 which fitted a Shvetsov M-71 engine during 1944.
Status Retired, Out-of-Service
Production 5,753 Units
Lavochkin - Soviet Union
Czechoslovakia; Soviet Union
- Ground Attack
- Close-Air Support (CAS)
28.22 ft (8.6 m)
32.15 ft (9.8 m)
8.33 ft (2.54 m)
5,512 lb (2,500 kg)
7,385 lb (3,350 kg)
(Showcased weight values pertain to the Lavochkin La-7 production model)
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