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Safran Aircraft Engines (previously Snecma) is a French aerospace engine manufacturer headquartered in Courcouronnes, France. It designs, makes and maintains engines for commercial and military aircraft as well as rocket engines for launch vehicles and satellites.

Some of its notable past developments, alone or in partnership, include the M88 for the Rafale, Olympus 593 for Concorde, CFM56/CFM-LEAP for single-aisle airliners, and the Vulcain engines for the Ariane 5.

It has 15,700 employees working at 35 production sites, offices, and MRO facilities worldwide. It files an average of nearly 500 patents each year.

Safran Aircraft Engines is a subsidiary of Safran.

History

• 1945: Snecma was formed when the French aircraft engine manufacturer Gnome & Rhône was nationalised. The name 'Snecma' was an acronym for Société nationale d'études et de construction de moteurs d'aviation (in English: 'National Company for the Research and Construction of Aviation Engines').

• 1946 or 1947, the nationalized Établissments Regnier Motor Company was absorbed into Snecma and continued to produce the SNECMA Régnier 4L.

• 1961: Snecma and Bristol Siddeley formed a joint venture to produce a high-performance jet engine for the Concorde. The main body of the engine came from the Bristol Olympus, which was further improved with several refinements including the addition of the variable intakes necessary for supersonic flight.

• 1968: Snecma acquired Hispano-Suiza, Socata and Bugatti.

• 1970: Messier and Snecma agreed to merge their landing gear business. The following year, Messier-Hispano was formed, which was fully acquired by Snecma in 1973. Snecma's landing gear business was further consolidated by the creation of Messier-Hispano-Bugatti (later renamed Messier-Bugatti) in 1977.

• 1974: Snecma and General Electric (GE) created a joint venture named CFM International, beginning a long term cooperation to produce the CFM56 series of turbofan engines.

• 1990: Snecma announced its partnership with General Electric to build and produce the General Electric GE90 engine.

• 1994: Messier-Dowty was formed following the merger of the landing gear businesses of Snecma (Messier) and the British TI Group (Dowty).

• 1997: Snecma fully acquired the Société européenne de propulsion.^[2]

• 1998: Snecma took full control of Messier-Dowty.

• 1999: Snecma Services was created to consolidate all maintenance, repair and overhaul (MRO) operations (including Sochata-Snecma).

• 2000: Snecma acquired Labinal, along with its Turbomeca and Microturbo subsidiaries.

• 2001: Hurel-Hispano (now renamed and known as Safran Nacelles) was created to consolidate the group's engine nacelle and thrust reverser business.

• 2005: Snecma merged with Sagem to form Safran. Snecma was divided into two divisions of the new group (propulsion and equipment).

• 2010: Snecma and GE formed CFM Materials as a 50/50 joint venture.

• 2016: Snecma was renamed Safran Aircraft Engines as the main subsidiary of Safran.

Research

In 2008, the European Commission launched an open rotor demonstration led by Safran within the Clean Sky program with 65 million euros funding over eight years : a demonstrator was assembled in 2015, and ground tested in May 2017 on its open-air test rig in Istres, aiming to reduce fuel consumption and associated CO₂ emissions by 30% compared with current CFM56 turbofans.^[3]

With its 30:1 bypass ratio, it should deliver a 15% improvement over the CFM International LEAP already at 11:1; but Airbus is more interested in the more conventional Ultra High Bypass Ratio (UHBR) turbofan at 15:1, which could be introduced from 2025, offering 5% to 10% better efficiency than the LEAP and to be tested from 2020.^[4]

The gearbox and the blade variable-pitch technologies were validated in 100 cycles and 70 hours of tests, including 25% at takeoff thrusts of {{cvt|21,000-25,000|lbf|kN}}, reverse thrust, and rotor imbalance with a blade weight.Afterwards, it was disassembled in April 2018 to examine each part and refine expected wear predictions.GE Aviation was involved through its Italian subsidiary Avio Aero, providing the gearbox and the low-pressure turbine.To be certified, a blade-out event have to be extremely improbable, less than once every billion flight hours as its RTM carbon fiber fan blades will be supported by the in-service LEAP experience.{{cite news |url= http://aviationweek.com/propulsion/safran-says-counter-rotating-open-rotor-engine-relevant |title= Safran Says Counter-Rotating Open Rotor Engine Relevant |date= Apr 5, 2018 |author= Thierry Dubois |work= Aviation Week & Space Technology}}
6. ^{{cite press release |url= https://www.cfmaeroengines.com/press-articles/cfm-news-release-30000th-cfm56-engine-comes-production-line/ |title= 30,000th CFM56 engine comes off the production-line |publisher= CFM international |date= 12 July 2016}}
7. ^{{cite news|url=http://www.aviationweek.com/Article.aspx?id=/article-xml/awx_05_01_2013_p0-575444.xml&p=1 |title=Safran Reveals New Turboprop Efforts |publisher=Aviation Week |date=1 May 2013 |accessdate=4 August 2013}}
8. ^{{cite news |url=http://www.aerobuzz.fr/spip.php?article2410 |title=Safran veut s'attaquer au monopole de Pratt & Whitney |publisher=aerobuzz.fr |date=24 January 2012 |accessdate=4 August 2013 |language=fr |deadurl=yes |archiveurl=https://web.archive.org/web/20130806101912/http://www.aerobuzz.fr/spip.php?article2410 |archivedate=6 August 2013 |df=dmy-all }}

• {{cite book |last= Gunston |first= Bill |coauthors= |title= World Encyclopedia of Aero Engines, 5th Edition |year= 2006 |publisher= Sutton Publishing Limited |location= Phoenix Mill, Gloucestershire, England, UK |isbn= 0-7509-4479-X |pages= }}

External links

• [https://www.safran-aircraft-engines.com/ Safran Aircraft Engines - Official website]

• [https://www.youtube.com/user/SnecmaSafrangroup Safran Aircraft Engines - Official YouTube channel]

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