Engine power curves.

Discussion in 'Aviation' started by Neil Stirling, Jan 12, 2013.

  1. Neil Stirling

    Neil Stirling Member

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  2. tomo pauk

    tomo pauk Creator of Interesting Threads

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    Another goldmine :) Thanks.

    Never knew that 1st Hercules (at least II and IV) engines have had single speed superchargers?
     
  3. wuzak

    wuzak Well-Known Member

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    Awesome Neil. Many thanks.

    That Exe sure was a go-er! 1160hp @ 1,000ft, 4200rpm at take-off power. And only 4.5psi boost!
    And 1100hp @ 5,0000ft and 950hp @ 15,000ft, 3800rpm

    Vulture RV.2SM: 2000hp @ 5,000ft, 3000rpm, +9.25psi boost MS gear, 1860hp @ 14,500ft, 3000rp, +9.25psi boost.
    Max take-off power, 2100hp @ sea level, 3000rpm, +11.5psi boost.

    Not too many aero engines at that time had the combination of power and compactness that the Vulture did. Pity about the reliability.

    Dagger VIII: 1000hp @ 8,750ft, 4200rpm, +5psi boost max. But the other curve on the graph shows 1115hp @ 7,250ft, 4400rpm and +7psi boost.


    Not sure I follow the RPM-power graphs. The curves don't finish up at the max power point.
     
  4. Juha

    Juha Well-Known Member

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    Thanks a lot, Neil!
    Excellent material!
    I'm specially thankful for the Cheetah (Anson), Aquila (Venom) and Mercury VII (FiAF Fokker D.XXI) graphs.

    Juha
     
  5. krieghund

    krieghund Member

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    Oh man a treasure trove!!
     
  6. Shortround6

    Shortround6 Well-Known Member

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    Another heartfelt thanks, Both for the information and your effort in making it available.
     
  7. Vincenzo

    Vincenzo Active Member

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    Again thanks
     
  8. Neil Stirling

    Neil Stirling Member

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    Thanks guys.

    Neil.
     
  9. Aozora

    Aozora Well-Known Member

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    \\:D/*jaw hangs open and gah! :tongue1: * WOW - fantastic.
     
  10. Tante Ju

    Tante Ju Banned

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    Very good share! I am curious, it seems early Merlin engine develops less power at higher RPM (if I read graph right) - why is that anyone know?
     
  11. wuzak

    wuzak Well-Known Member

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    Which graph?
     
  12. fastmongrel

    fastmongrel Well-Known Member

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    Cant open the file my firewall keeps jumping on it. Would you be able to repost it as a pdf.
     
  13. Neil Stirling

    Neil Stirling Member

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    No, this is all I can do.

    Neil.
     

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