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

  1. #11
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    Default Re: How fast could a propeller driven piston powered plane theoretically go ?

    Some horsepowers could also be squeezed from 2 of these; https://www.hemmings.com/blog/articl...c-472-500-v-8/

    I figure 2 x 400 hp = 800 hp.

    I wonder if it was eligible for sports class ?

  2. #12
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    Default Re: How fast could a propeller driven piston powered plane theoretically go ?


  3. #13
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    Default Re: How fast could a propeller driven piston powered plane theoretically go ?


  4. #14
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    Default Re: How fast could a propeller driven piston powered plane theoretically go ?

    Also M0.96 claim.

    On 5 February 1952, a Spitfire 19 of 81 Squadron based at Kai Tak in Hong Kong reached probably the highest altitude ever achieved by a Spitfire. The pilot, Flight Lieutenant Edward Ted Cyril Powles,[130] was on a routine flight to survey outside air temperature and report on other meteorological conditions at various altitudes in preparation for a proposed new air service through the area. He climbed to 50,000 ft (15,000 m) indicated altitude, with a true altitude of 51,550 ft (15,710 m). The cabin pressure fell below a safe level, and in trying to reduce altitude, he entered an uncontrollable dive which shook the aircraft violently. He eventually regained control somewhere below 3,000 ft (910 m) and landed safely with no discernible damage to his aircraft. Evaluation of the recorded flight data suggested he achieved a speed of 690 mph (1,110 km/h), (Mach 0.96) in the dive, which would have been the highest speed ever reached by a propeller-driven aircraft if the instruments had been considered more reliable.[127]

    ----

    https://en.wikipedia.org/wiki/Westla...wind_(fighter)

    Whirlwind with swept wing and 2/3 size with 2 x HEMIs could go fast too.
    Last edited by Jukka; 03-26-2019 at 12:14 AM.

  5. #15
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    Default Re: How fast could a propeller driven piston powered plane theoretically go ?

    Beautiful PRSU for a LS3 V-8; https://www.youtube.com/watch?v=D2-Ajw1Rx-4

    Same for a pair of HEMI 392s and you have 1060 hp out put ! Cool or what ?

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    2 x Falconers would deliver 1280 hp.

    https://en.wikipedia.org/wiki/Falconer_V-12
    Last edited by Jukka; 03-26-2019 at 09:01 AM.

  6. #16
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    Default Re: How fast could a propeller driven piston powered plane theoretically go ?

    Good document of an aviation IC engine.

    https://www.youtube.com/watch?v=gIdXLMVP6VU
    Last edited by Jukka; 04-06-2019 at 01:01 PM. Reason: BS removed

  7. #17
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    Default Re: How fast could a propeller driven piston powered plane theoretically go ?

    Has there ever been a flat 12 engine ?

  8. #18
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    Default Re: How fast could a propeller driven piston powered plane theoretically go ?

    Racing has had 10 flat-12 engines; https://www.youtube.com/watch?v=AygSW1lWVOk

  9. #19
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    Default Re: How fast could a propeller driven piston powered plane theoretically go ?

    Sorry wrong link...here are 10 flat 12s; https://www.youtube.com/watch?v=MZXplD_SYA4

  10. #20

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

    http://fighterwriter101.blogspot.com...8b-voodoo.html

    The speed limits of the old prop planes in a dive was the wing and airframe design. Theoretically props are flying many times the speed of sound, because the compressor blades in a turbojet are very much like a propeller. The key I think is to shroud the propeller. I would love to be a part of accomplishing it.

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