This Lavochkin La-7 paper model is from hoxity. The Lavochkin La-7 was a piston-engined Soviet fighter developed during World War II by the Lavochkin Design Bureau (OKB). It was a development and refinement of the Lavochkin La-5, and the last in a family of aircraft that had begun with the LaGG-1 in 1938. Its first flight was in early 1944 and it entered service with the Soviet Air Forces later in the year. A small batch of La-7s was given to the Czechoslovak Air Force the following year, but it was otherwise not exported. Armed with two or three 20 mm (0.79 in) cannon, it had a top speed of 661 kilometers per hour (411 mph). The La-7 was felt by its pilots to be at least the equal of any German piston-engined fighter and even shot down a Messerschmitt Me 262 jet fighter. It was phased out in 1947 by the Soviets, but lasted until 1950 with the Czechoslovak Air Force.
La-7TK: One aircraft used to evaluate the TK-3 turbosupercharger in July 1944 in the hopes of improving high-altitude performance. It was destroyed when the TK-3 disintegrated in flight.
La-7R: Testbed for a tail-mounted liquid-fuelled RD-1KhZ rocket engine. The rocket was rated at 300 kilograms-force (660 lbf) of thrust and its fuel (90 liters (20 imp gal; 24 U.S. gal) of kerosene and 180 liters (40 imp gal; 48 U.S. gal) of red fuming nitric acid) was expected to last between three and three and a half minutes. While the rocket was firing it increased the fighter's speed by 80 kilometers per hour (50 mph), but the aircraft's other flying qualities deteriorated. Fifteen flights were made in the first quarter of 1945, although the rocket exploded on the ground on 12 May. The aircraft was repaired, but later had an explosion in flight although the pilot managed to land it safely. Details of any later flights are unknown, but the La-7R was displayed at the August 1946 Tushino Airshow with the rocket firing.
La-7PVRD: Testbed for two underwing ramjet engines. The aircraft was expected to reach a speed of 800 kilometers per hour (497 mph) at a height of 6,000 metres (19,685 ft), but could not exceed 670 kilometers per hour (416 mph) due to the high drag of the ramjets.
La-7/M-71: One aircraft was fitted with the Shvetsov M-71 for trials in 1944. However the engine was not yet ready for service and the program was cancelled.
La-7UTI: Two-seat trainer version. Armament reduced to a single 20 mm gun and the oil cooler was relocated underneath the engine cowling. Fitted with a radio compass and gun camera. Considerably heavier than the fighter at 3,500 kilograms (7,716 lb), but it retained the flying characteristics of the single-seat aircraft. 584 built, the last two delivered in 1947.
There are 17 versions for this aircraft paper model and a stand:
Soviet all-dark green
Soviet flecked Camo
North Korean Air Force
La-7 white 2-gun-version
La-7 white 3-gun-version