Lavochkin La-150
| La-150 | |
|---|---|
| Role | Jet fighter |
| Manufacturer | Lavochkin |
| Designer | Semyon Lavochkin |
| First flight | 11 September 1946 |
| Status | Project cancelled |
| Primary user | Soviet Air Force |
| Number built | 8 |
| Developed into | Lavochkin La-152 |
The Lavochkin La-150 (also known as the Izdeliye 150 – Aircraft or Article 150,USAF/DOD designation Type 3), was designed by the Lavochkin design bureau (OKB) in response to a 1945 order to build a single-seat jet fighter using a single German turbojet. By this time both the Americans and British, as well as the Germans, had already flown jet fighters and the single Soviet jet engine under development (the Lyulka TR-1) was not yet ready for production. The design was completed quickly, but the construction of the five flying prototypes was protracted by the factory's inexperience in building metal aircraft. The aircraft made its first flight in September 1946, but proved to require extensive modifications to meet the Soviet Air Forces' requirements. These took so long to make and test that the aircraft was essentially obsolete by the time that they were completed. Even one variant with a much more powerful engine was inferior to other aircraft that the OKB had under development and all work was terminated in 1947.
The Lavochkin OKB was ordered to design a fighter using a single Junkers Jumo 004B axial-flow turbojet in February 1945. Much like their rivals at the Mikoyan-Gurevich OKB with their MiG-9, the OKB chose a "pod-and-boom" layout for their new fighter, based on advice from the Central Aerohydrodynamic Institute (TsAGI), although their design had a shoulder-mounted wing. The wings of the all-metal aircraft had fixed leading edges and slotted flaps. The cockpit was well forward, giving the pilot good visibility, and he was protected by an armored headrest. The windscreen of the teardrop-shaped canopy was also armored. Two 23-millimetre (0.91 in) Nudelman-Suranov NS-23 were mounted on the lower side of the fuselage with 75 rounds per gun. The tricycle landing gear retracted into the fuselage which gave the 150 a very narrow track. The Soviet derivative of the Jumo engine, the RD-10, was rated at 900 kilograms-force (8.8 kN; 2,000 lbf) and was mounted behind the cockpit. A steel heat shield protected the bottom of the rear fuselage from the engine's exhaust. Air was supplied by an intake in the aircraft nose that split around the cockpit before reaching the engine. Seven tanks, five in the fuselage and one in each wing, carried a total of 500 kilograms (1,100 lb) of fuel.
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