Virtually simultaneously with redesign of the Yak-15 to produce the Yak-17, the Yakolev OKB embarked upon the design of a more advanced single-seat fighter, the Yak-19. Utilising a straight-through airflow arrangement, the Yak-19 employed a 12% thickness straight wing. The Yak-19 accommodated all fuel within the fuselage. Of all-metal stressed-skin construction with a semi-monocoque fuselage, the Yak-19 had a laminar-flow wing of TsAGI S-l-12 section, and armament of two 23mm cannon. Equipped with an ejection seat, it was the first Soviet fighter to be fitted with an afterburner, this boosting the thrust of its RD-10F turbojet to 1100kg. The design was tailored round the 2425-lb (1100-kg) afterburning thrust RD-10F located in a straight-through design with a nose inlet and tail exhaust.
Two prototypes were built, the first of these entering flight test in January 1947. The second prototype differed in having revised vertical tail surfaces, several degrees of anhedral applied to the horizontal tail and provision for a 200-litre drop tank beneath each wingtip. Difficulties were experienced with the afterburner, and as more powerful turbojets (eg, the RD-500) were by now available, the Yak-19 test programme was terminated on 21 August 1947.
Max take-off weight: 3050 kg / 6724 lb
Empty weight: 2200 kg / 4850 lb
Wingspan: 8.7 m / 29 ft 7 in
Length: 8.36 m / 27 ft 5 in
Wing area: 13.5 sq.m / 145.31 sq ft
Max. speed: 904 km/h / 562 mph
Ceiling: 15000 m / 49200 ft
Range: 550 km / 342 miles