JorgeGT 8 hours ago

I talked with one of the aeroacoustic engineers working on it, she says they expect to match noise levels of current engines.

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Etheryte 9 hours ago

This is discussed in the article, was there a specific part that was ambiguous?

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  • xattt 9 hours ago

    TFW does say there is an opportunity for reduced noise. However, conventional turboprops are very loud compared to their jet counterparts.

    Each revolution of a prop blade sends out a shockwave of air against the airframe. The strength of the shockwave is likely proportional to the instantaneous thrust of the engine, and more blades are likely to weaken or smooth it.

    A turbofan has a nacelle to contain the shockwave, and avoid the whole noisy mess.

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  • ufmace 8 hours ago

    It's only discussed in a similarly ambiguous way - like that they know noise is a potential problem that they're working on. Though to be fair, the designers probably have no idea themselves, since apparently nobody has built a prototype engine that could be run at the rated thrust level in a way they could check the real-world noise and vibration on.

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    • rgmerk 7 hours ago

      I would assume that these days you can simulate that increasingly accurately before you need a full-scale prototype.

      They could also use active noise cancellation, which is already used in some turboprops like the Q400.

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xattt 9 hours ago

Just an opportunity to sell premium quiet seats at the back, and pleb seats at the front.

With all seriousness, I am thinking whether there are parallels between this proposed plane and the Q400.

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