Saturday, 14 October 2017

IL-76LL with a perspective PD-14 engine

PD-14 engine

PD Engines based on the common core make a family of Russian bypass two-shaft turbojet engines with an efficient noise suppression system intended for short- and medium-haul aircraft and IGTs.
The main specific feature of the PD engine family is the use of a compact common core and a relatively light shroudless fan.
Key technologies: hollow wide-chord titanium blades, blisks and a weld section in the HP compressor rotor, low emission combustor made of intermetallic alloy, single crystal HP turbine blades with an advanced cooling system, ceramic coating on the hot section components, hollow LP turbine blades, nacelle made of composite materials.

Engine Modifications under Development

  • The family of advanced turbofan engines for short- and medium-haul aircraft comprises the following engines: PD-14, PD-14А, PD-14М, PD-10;
  • PD-14 – baseline engine for МС-21-300 aircraft;
  • PD-14А – derated modification of the engine for МС-21-200 aircraft;
  • PD-14М – uprated modification of the engine for МС-21-400 aircraft;
  • PD-10 – derated modification of the engine (10...11 ton-force) for SSJ‑NG aircraft.

Competitive Advantages by Operational Cost Efficiency

are achieved through the following specific performance- and design-related features compared to competitors:
  • Lower combustor exit temperature is a very important factor contributing to cost and risk reduction in reaching the target durability and reliability of the short-cycle A/C engines.
  • Smaller fan diameter of the PD-14 engine contributes to real engine weight and nacelle drag reduction.
  • Optimum dimensions of the core duct help resolving the problem of relatively high compressor air bleeds for different purposes and reduce installation thrust losses.
  • High enough fan design pressure ratio (due to somewhat lower bypass ratio) eliminates the need in the variable fun duct nozzle which inevitably increases engine weight and drag, and reduces installation thrust losses.
  • Conventional configuration of the PD-14 engine without a gearbox which has been well proven in service enables achieving the target weight, life, reliability and maintenance costs.
Optimum combination of reasonably high cycle parameters and a well proven engine configuration with a direct fan drive provides for lower engine cost, MRO costs, lower powerplant weight and drag and makes the PD-14 engine excel in operational cost efficiency and  life cycle cost.

PD-14 Engine Program Design and Development Activities Status

  • Detailed design completed with positive conclusions received;
  • Engine/ aircraft integration activities launched with Irkut Corporation;
  • Extensive testing of engine development components and systems performed at special test rigs;
  • Demo engine of the baseline engine design developed in order to demonstrate the PD-14 engine components operational capability;
  • The first stage of the engine core development testing completed;
  • Availability of critical technologies demonstrated by technology demonstrator engine manufacturing and testing;
  • Nacelle components made of polymer composites tested on the prototype engine;
  • Detailed design documentation issued for a development batch of  PD-14 engines and nacelles;
  • Production cooperation to make a development batch of  PD-14 engines and nacelles formed and manufacturing launched;
  • 100-03 and 100-04 demo engines test program completed with the selected engineering solutions validated;
  • Application to the Interstate Aviation Committee Aviation Register to obtain the engine airworthiness certificate filed;
  • PD-14 engine certification basis covering IAC AR, EASA, FAA requirements developed;
  • PD-14 engine mockup commission held and IAC AR mockup commission protocol approved;
  • PD-14 engine-powered МС-21 aircraft mockup commission held and IAC AR mockup commission protocol approved;
  • Production preparation performed and Level VI technological availability achieved for manufacturing of the development batch of PD-14 engines;
  • Flying testbed preparation for PD-14 engine flight tests is underway.
  • PD-14 engine flight testing at IL-76LL flying testbed is underway in the Flight Research Institute named after Gromov.

PD-14 Engine Development Cooperation
Design Lead: JSC «UEC-Aviadvigatel»
Program Scientific Support: CIAM, TsAGI
Materials Development: VIAM


Specialists will complete the final certification stage of flight tests of PD-14 perspective aircraft engine for the new Russian passenger jet MC-21 by the end of 2017, Managing Director of UEC-Aviadvigatel company Alexander Inozemtsev told TASS on Monday.

US Pratt & Whitney PW 1400G engines are currently mounted on the airplane.

"The second stage of flight tests ended in March. We are now preparing the third stage, already the certification one, which will enable us to mount engines on MC-21," Inozemtsev said.

The third stage of flight tests will be completed by 2017 year-end and a special statement is planned to be signed after that, authorizing outfit of aircraft with domestic engines, he added. Source:

Development of aircraft engine PD-14 follows the plan according to the information provided by Joint engine manufacturing corporation (ODK). Russian certificate is to be issued in the second quarter of 2018. One of the first flying developmental model of the new jet MC-21 will be equipped with PD-14 engine in 2019.

Alexander Artyukhov, Head of ODK, mentioned that performance of bench testing and flight testing of MC-21 would require manufacture of 11 engines PD-14. At the present time there are 10 ready engines. One more engine will be manufactured in September 2017.

“We suppose that time frames of Russian certificating, according to the plan, during the second quarter 2018 will be provided, giving us possibility for carrying out delivery of engines for the start of MC-21 jet flight and certificate tests by the end of 2018”, - Alexander Artyukhov’s words cited by TASS. Source:

Irkut MC-21: Details

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