Brüel & Kjær Sound & Vibration Measurement A/S

NPO Saturn - aero engine noise certification


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The Company

Aircraft engine manufacturer, NPO Saturn, was established on July 5, 2001 through the merger of Rybinsk Motors JSC and A. Lyulka-Saturn, a leading Russian aircraft engine design bureau. The company, founded by Pavel Aleksandrovich Soloviev, has its headquarters in the town of Rybinsk and holds a 50% stake in the PowerJet joint venture with Snecma.

NPO Saturn is the leading Russian designer and manufacturer of gas turbine engines for military and civil aviation, unmanned aerial vehicles, electric power plants, gas pumping units and marine applications. It sells its advanced gas turbine solutions mainly in the high-technologies market.

Aircraft Engine Noise Certification

PowerJet, formed as a joint venture between NPO Saturn and French SNECMA (SAFRAN Group) in 2004, have designed and built the new SaM146 turbofan engine selected by the Sukhoi Civil Aircraft Company to power its Superjet 100 aircraft family. The Sukhoi Superjet 100 is a medium-haul airliner developed in collaboration with Alenia Aeronautica (Italy), and with consultancy support from Boeing (USA).

With this design went a commitment to the environment. The new engine should incorporate the most stringent noise and emissions standards using state-of-the-art eco-technology – “to meet or exceed current and future regulations”.

Few aviation issues evoke as much interest and emotion as noise. Noise is considered the most important environmental concern for many people who live or work near an airport. Engine manufacturers like PowerJet are therefore making huge efforts to reduce their environmental impact and improve cabin comfort.

Noise levels from individual aircraft are restricted by the noise certification requirements given in the Federal Aviation Regulations (FAR) Part 36, and the ICAO Convention on International Civil Aviation, Annex 16. NPO Saturn and Snecma turned to Brüel& Kjær for assistance for noise certification of their new engine. Brüel&Kjær responded with a state-of-the-art noise certification system supporting these regulations.

The PowerJet SaM146 Turbofan

The PowerJet SaM146 is a turbofan engine designed from the ground up to power regional jets. Snecma is in charge of the core engine, control system, transmissions, overall engine integration and flight testing. NPO Saturn is responsible for the components in the low-pressure section and engine installation on the Sukhoi Superjet 100 regional aircraft, and ground testing – including the noise certification.

Together Snecma and NPO Saturn have built a new Open-Air Test Bench in Poluevo (Russia, Yaroslavl region) to handle certification tests for the SaM146 and other engines. This test rig covers three types of testing – performance, certification operational tests, and noise certification of the propulsion system.

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