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Thread: How fast could a propeller driven piston powered plane theoretically go ?

  1. #21
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    Default Re: How fast could a propeller driven piston powered plane theoretically go ?

    Yes shrouded prop could give the right answer (at low altitude).

    Also the feather weight solar powered aerodyne by Paul McCready went 7 x faster than on sea level at 100 000 feet altitude.
    Last edited by Jukka; 07-07-2019 at 02:55 AM.

  2. #22

    Default Re: How fast could a propeller driven piston powered plane theoretically go ?

    Proof of concept. Prop will work at mach tip speed, and fly at mach speed. Look up the Thunderscreech.
    And it flew faster than what most sites post.

  3. #23
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    Default Re: How fast could a propeller driven piston powered plane theoretically go ?

    Quote Originally Posted by Exhaustgases View Post
    Proof of concept. Prop will work at mach tip speed, and fly at mach speed. Look up the Thunderscreech.
    And it flew faster than what most sites post.
    Yes someone could make a proof of concept. It is basically a thrust to weight ratio question. 4500 hps and 2000 lbs should be adequate. Little bit wing sweep and good Meredith effect and everything in balance and you are good to go.

  4. #24

    Default Re: How fast could a propeller driven piston powered plane theoretically go ?

    I wish there was the finances so us like minded folks could work together and make this happen.

  5. #25
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    Default Re: How fast could a propeller driven piston powered plane theoretically go ?

    Quote Originally Posted by Exhaustgases View Post
    I wish there was the finances so us like minded folks could work together and make this happen.

    Yes and most cost effective would be a small redesigned "Super" F2A with a R-2800.

  6. #26

    Default Re: How fast could a propeller driven piston powered plane theoretically go ?

    How much HP do you think would be needed?

  7. #27
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    Default Re: How fast could a propeller driven piston powered plane theoretically go ?

    Double Wasp a stock can deliver (one version) 2 800 hp.

    https://en.wikipedia.org/wiki/Pratt_...00_Double_Wasp

    I bet a 3 300 - 3 500 hp is doable.

    Small two seater Brewster would be a show stopper !

    With tuned wing foil and large spinner maybe not so obvious, but still a F2A.
    Last edited by Jukka; 05-22-2022 at 07:07 AM.

  8. #28

    Default Re: How fast could a propeller driven piston powered plane theoretically go ?

    Quote Originally Posted by Jukka View Post
    Double Wasp a stock can deliver (one version) 2 800 hp.

    https://en.wikipedia.org/wiki/Pratt_...00_Double_Wasp

    I bet a 3 300 - 3 500 hp is doable.

    Small two seater Brewster would be a show stopper !

    With tuned wing foil and large spinner maybe not so obvious, but still a F2A.
    Except the F2A is a drag monster. It would need a new wing, spinner, a way to hide the main wheels better, smaller, smoother canopy. Oh, and if you have an R2800 hanging off the front, move the cockpit back a lot to make up for the 1186lb difference between an R1820 and an R2800. There really isn't enough airplane to get the CoG correct. Add the weight of a very large prop, and there is no way the plane won't sit on its nose.

    Will

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