The first prototype of the new Russian MC-21-300 airliner equipped with Aviadvigatel PD-14 engines successfully completed its first flight test on 15 December 2020, during a flight lasting one hour and twenty-five minutes.
First flight with the Aviadvigatel PD-14s
The first prototype of the new Russian MC-21-300 airliner equipped with Aviadvigatel PD-14 engines has successfully completed its first flight test. The flight took place on take-off from the runway of the Irkutsk aeronautics factory and lasted 1 hour 25 minutes, on 15 December 2020. "This flight is the joint result of two of Russia's most important civil aviation programmes - the MC-21 twin-engine aircraft and the PD-14 turbojet engine. Thanks to the efforts of scientists, manufacturers, engineers and workers, a new generation airliner is being created", said Sergei Chemezov, Rostec's CEO.
Heir to the PS-90
All previous flights, including its first flight in May 2017, have been powered by Pratt & Whitney PW1000G engines. The Aviadvigatel PD-14 dual-flow engine has been developed by Rostec, a Russian state-owned company, since 2012. It is a new development of the PS-90 turbojet, the engine that has powered the majority of Soviet and Russian airliners, such as the Tu-204 and Il-96, since the 1980s and 1990s. The PD-14 is being developed specifically for the MC-21. It is reported to be 15% more efficient than its predecessor the PS-90.
Blower with wide, hollow titanium blades
PD-14 has a moderate dilution ratio of 8.5 to 1. The hot section of the PD-14 gas generator consists of an eight-stage compressor with a compression ratio of 17 to 1, an annular combustor and a two-stage turbine. The cold section consists of a single-stage fan, a three-stage low-pressure compressor, a six-stage low-pressure turbine. But the key feature that is new technology on the PD14 is the adoption of a fan with wide, hollow titanium blades.
According to the Russian Minister of Industry and Trade Denis Manturov, half of the first 630 MC-21s in series production will be equipped with PD-14s, the rest will be powered by PW1000G