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.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.