Yakovlev Yak-19
| Yak-19 | |
|---|---|
 |
|
| A Yak-19 in flight | |
| Role | Fighter aircraft |
| Manufacturer | Yakovlev |
| Designer | Alexander Yakovlev |
| First flight | 8 January 1947 |
| Status | Prototype |
| Number built | 2 |
The Yakovlev Yak-19 (Russian: Як-19, USAF/DOD designation Type 7) was a prototype Soviet fighter built in late 1940s. It was the first Soviet aircraft to be equipped with an afterburning turbojet, the Klimov RD-10F that was derived from the German Jumo 004 engine. Only two examples were built as it was rejected for service by the Soviet Air Force.
In April 1946, the Council of People's Commissars ordered several design bureaux (OKB Russian: Опытное конструкторское бюро – Opytnoye Konstruktorskoye Buro), included that of Alexander Yakovlev, to develop a single-seat jet fighter to be equipped with a single Lyulka TR-1 turbojet engine. The aircraft should have a maximum speed of 850 kilometers per hour (528 mph) at sea level and a speed of 900 km/h (559 mph) at an altitude of 5,000 meters (16,400 ft). It should be able to climb to that altitude in 3.8 minutes or less and should have a maximum range of no less than 700 kilometers (430 mi). Yakovlev and his team were well aware that any derivative of their earlier Yak-15 and Yak-17 fighters, then under development, could not reach the required speed because of their thick wings and chose to begin a "clean-slate" design. Preliminary work used the same "pod-and-boom" layout as had been used in the earlier Yakovlev designs, although the cockpit was located in front of the engine. The TR-1 engine was plagued by delays and Yakovlev devoted most of his efforts to designs that used the RD-10.
By late June, Yakovlev had decided to use a more aerodynamically efficient "tubular" layout with the engine buried in the center of the fuselage. After it became clear that neither the TR-1, nor the imported British Rolls-Royce Nene or Rolls-Royce Derwent engines would be available to power the prototypes, Yakovlev settled on the newly available afterburning version of the RD-10. The first prototype was ordered to a very demanding schedule and was completed on 29 November 1946.
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