The Soloviev D-30 (now the Aviadvigatel PS-30) is a Soviet two-shaft low-bypass turbofan engine, officially referred to as a "bypass turbojet"[citation needed].

Development of the turbofan spurred numerous growth versions with increased fan diameter and modified component arrangements.

In 1969, an upgraded version, the D-30 engine series II, was created - the main difference being the addition of a thrust reverser and an improved control system.

[1] In 1980, the D-30 engine series III, a further improvement, was created with the maximum thrust of 6930 kgf (with preserving it at up to до = +C)[clarify].

The core of the third-series D-30 was also taken as a base point for developing gas turbine plants for the Russian fuel and energy complex.

The turbine hot section has a total of 6 stages, the nozzle is common for both flows and has a lobe mixer and a mixing chamber.

In 1972, engine passed certification tests and then was presented to the public at the next international air show in Le Bourget (France).

Powered by four D-30KP engines, Il-76 is capable of lifting a payload of 40 tons (88,000 lb) over a range of 5,000 km (2,700 nmi; 3,100 mi) at cruise speed up to 900 km/ hr.

[4] The successful replacement of the engines on long-haul Il-62 stimulated the leaders of the Ministry of Aviation Industry in the Soviets to re-engine another popular aircraft – the medium-haul passenger airliner Tu-154.

[citation needed] More acute problems stemmed from the tendency of the Foxbat's engines to break down at maximum throttle in high-speed situations.

Capable of generating 9,500 kgf (20,900 lbf or 93 kN) dry thrust and 15,500 kgf (34,200 lbf or 152 kN) afterburning thrust, the engine gave MiG's new interceptor a top speed exceeding 3,000 km/h (1,900 mph),[citation needed] and a maximum takeoff weight of 45,800 kg (101,000 lb).

These powerful engines also allowed the large and complex interceptor to attain supersonic speeds at low altitudes under 1,500 m (4,900 ft).