[PDF] airbus a220 engine noise

So, what causes the whale noise? According to Pratt and Whitney's VP and Regional Jet GTF Engine GM, Graham Webb, the noise is a low-power transient combustor tone caused by pressure changes against the combustion structure. The resulting effect and sound is similar to blowing over the opening of a bottle.
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  • Why does the A220 make a whale noise?

    The Brazilian aircraft manufacturer Embraer studied the noise and discovered where the whale sounds were coming from. When the aircraft engines turn at a certain frequency during landing, it creates a resonance in the engine's combustion chamber. The noise is caused by those vibrations (resonance).

  • How quiet is the A220?

    The Airbus A220, formerly known as the Bombardier CSeries, is the quietest aircraft in its class by 50 dBA. Its Pratt & Whitney GTF engines are designed to be cleaner and quieter than competing options, and contribute to significant noise reduction.

  • Why does the A220 have so many engine failures?

    The most notorious problems for the A220 are the supply chain issues being experienced by Pratt & Whitney (P&W). The A220 is exclusively powered by PW1500G geared turbofan engines. This powerplant is part of a larger family of geared turbofan engines that can also be found under the wings of Embraer E2 aircraft.
  • Operators of the A220 have had to deal with various durability issues for the engines fixed to the aircraft, adding to the pain by a shortage of spare engines and delays around maintenance that have collectively reduced the ability to supply working machines and caused many of the aircraft types to be grounded.
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