|Quoting Stitch (Reply 2):|
I've only heard the Trent 1000 (Package A) fly overhead and while it is very much a unique sound, I don't recall it sounding like a prop...
|Quoting Cargolex (Reply 7):|
My first question is, was the Ram Air Turbine deployed? Because that can sound like a prop.
|Quoting AirlineReporter (Thread starter):|
Have any of you experienced this at all? I have never heard another jet engine sound like that before. It lasts maybe 3-5 seconds before going back to sounding like the GEnx or Trent1000 engine.
|Quoting DocLightning (Reply 5):|
These new ultra-quiet engines still have blade tips breaking Mach 1 at takeoff power. That's going to make a noise as those shockwaves are emitted. It can be muffled, sure, but not silenced.
|Quoting BMI727 (Reply 10):|
I don't recall the engine sounding like a prop, however the characteristic roar of a jet engine, which is caused by the shearing between hot, high velocity exhaust and the cooler, slow moving ambient air is very negligible thanks to a high bypass ratio and a well designed nacelle. This leaves mostly the whining of the fan blades interacting with the intake air, which could sound not too different from a turboprop.
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