Irkut MC-21

MUNICH, GERMANY, June 5, 2012 – Pratt & Whitney and Russia’s Irkut Corporation today signed a definitive agreement to offer the Pratt & Whitney PurePower® PW1400G engine on Irkut’s MC-21 family of aircraft. This secures the PurePower engine as the only western powerplant offered on the new narrow body program. Pratt & Whitney and Irkut Corporation selected Short Brothers plc, a subsidiary of Bombardier Aerospace of Canada, as the exclusive nacelle provider for the PW1400G engine family. Pratt & Whitney is a division of United Technologies Corp. (NYSE:UTX). “Irkut Corporation” JSC is a part of “United Aircraft Corporation” JSC.

Irkut is developing the MC-21 as a family of 150 to 210-passenger aircraft with first flight of the PurePower® PW1400G engined aircraft planned for 2015 and entry into service in 2017. The MC-21 series will feature jetliners with 25,000-32,000 pounds of thrust.

“We are pleased to confirm our commitment to provide economic and environmental benefits to the MC-21 aircraft with the PurePower engine,” said Todd Kallman, president, Pratt & Whitney Commercial Engines. “This revolutionary engine family continues to meet all of our performance expectations and program milestones. The PurePower engine offers the best possible reduction in fuel burn, noise, emissions and operating costs to Irkut’s customers.”

“We are proud to offer the Pratt & Whitney PurePower engine on our MC-21 family of aircraft. The engine makes our aircraft more competitive because it offers real savings for our customers,” said Alexey I. Fedorov, president, Irkut Corporation. “Lowering fuel costs is good for airline customers, and reducing the environmental impact of commercial aviation is good for everyone.”

The PurePower PW1000G series engines use an advanced gear system allowing the engine’s fan to operate at a different speed than the low-pressure compressor and turbine. The combination of the gear system and an all-new advanced core deliver double-digit improvements in fuel efficiency, environmental emissions and noise.
The PurePower engine family also shares common, advanced cores and feature flight proven, next-generation technology. The engine core consists of an ultra-efficient high-pressure compressor, a low-emissions combustor, and state of the art high-pressure turbine module.

Beochien a écrit:Une filiale Bombardier, fabricant de nacelles du MS21, c'est bien, ils ont peut être l'expérience ??
Mais pas sûr que ce soit sans conflit d'intérêts qq part !
En plus, de mémoire c'est Goodric/UTC qui fourni le C-Séries ! Bizarre ... j'aimerais comprendre !
Bon, demander à Aircelle de faire indépendemment son boulot ... hum !

JPRS

Admin a écrit:Et hop

le C919 à la bourre, le Ms21 aussi

Beochien a écrit:Un peu bizarre que P&W signe seulement maintenant ... comment travailler sur un moteur si ce n'est pas signé ???

Beochien a écrit:Une filiale Bombardier, fabricant de nacelles du MS21, c'est bien, ils ont peut être l'expérience ??
Mais pas sûr que ce soit sans conflit d'intérêts qq part !
En plus, de mémoire c'est Goodric/UTC qui fourni le C-Séries ! Bizarre ... j'aimerais comprendre !

"First flight of the PurePower PW1400G-engined aircraft [is] planned for 2015 and entry into service in 2017," it says.

P&W has given few other details, saying only that the first flight date is accurate and that the company is planning to start testing the first PW1400G engine on the ground in 2014.

Irkut had selected the PW1400G two years ago, but has only just finally signed a definitive agreement to offer the engine on the MS-21 family.

P&W has also provided more information on the engine size and overall supply chain. Its sales brochure for the PW1400G lists the thrust range between 125kN (28,000lb-thrust) for the 150-seat MS-21-200 and 138kN for the 181-seat MS-21-300. Irkut is also planning to offer the 210-seat ­MS-21-400.

But P&W lists the thrust range for the MS-21 family at 110-142kN. The manufacturer also says the engine nacelle for the MS-21 will be supplied by Bombardier's Belfast-based Short Brothers subsidiary.

Short Brothers has previously supplied nacelles for the International Aero Engines V2500 and General Electric CF34 turbofans, but this is the first time the company has been selected for the geared turbofan application.

Bombardier selected Goodrich to supply the nacelles for the PW1200-powered CSeries family.

Irkut plans to complete the final design phase of the MS-21 before 1 January 2013. The aircraft is being designed to compete in a crowded narrowbody sector, with the Airbus A320neo, Boeing 737 Max, CSeries and Comac C919 also vying for orders.

Specialists
of the durability division of TsAGI tested an aerodynamic model of the
MS-21-200 aircraft for buffeting during takeoff and landing.
The
experiment ordered by JSC “Corporation ‘Irkut’” was held in the subsonic
low-speed wind tunnel T-103. Durability experts of the Institute
investigated the vibration state of control devices (elevators and
rudders) and wing devices (flaps) of the MC-21-200 aircraft model. For
the study, the scientists used visualization of the airflow structure
of the aircraft model using the fibrilla method. The signals from strain
gauges and overload sensors mounted on the stabilizer and flaps were
recorded by the measuring and computing system.
The tests were
conducted at different model configurations in takeoff and landing modes
in the range of angle of attack α = 0 ° - 21 °.
After analyzing
the results of the work the specialists of the Institute will estimate
buffeting limits and loads resulting therefrom, determine the source
of vibrations and will issue recommendations on how to mitigate this
dangerous phenomena.

Specialists of the TsAGI Structural Engineering Complex have
completed the first stage of endurance tests on the prototype of wing
box No. 2 in the composite wing in accordance with the MS-21 program.
Operations were carried out as ordered by CJSC AeroComposite within the
framework of the development of the advanced MS-21 airplane with
a composite wing.
The purpose of the research is to prove
non-propagation of operational damages on a composite wing
of an aircraft. The tests confirmed that various damages to the wing
will not spread and will not impact flight safety.
Prior
to endurance tests, artificial impact damages were applied
to a prototype of the wing box, which could arise in production and
operation. To load the structure, a flight cycle is generated, being
equivalent to one in actual operation. At the first stage of endurance
tests 7,000 flights were simulated on the bench.
Nowadays the
specialists do visual inspection and ultrasonic examination of impact
damage areas then the tests continue. Following the results of the
entire cycle of tests TsAGI scientists will experimentally evaluate
characteristics and properties of the structure, confirm selection
of the structural arrangement of the wing box, the actual strength and
durability of structure zones will be determined, and the technology
of standard repairs and control methods will also be practiced. Test
results will be used when designing the wing of the MS-21 aircraft.