Adapting any jet engine to propeller drive

Discussion in 'Boat Design' started by RatliffFranklin, Jan 22, 2008.

  1. RatliffFranklin

    RatliffFranklin Previous Member

    Back in 1960, Porsche engineer Leopold Schmid proposed a land speed car which would use a paddlewheel placed in the exhaust of a jet engine to drive the rear wheels through spur gears. This same concept could be used in boats as a simple compact method for adapting almost any jet engine to driving propellers.
     
  2. kach22i
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    kach22i Architect

    It was a gimick to get around the rules, no engineering sense to it other than that.

    http://www.grandprixmodels.co.uk/fsw/fsw0203/reviews.php
    [​IMG]

    http://www.sportscars.tv/Newfiles/recordatt.html
    You are full of suprises, thanks for the ride.:)
     
  3. RatliffFranklin

    RatliffFranklin Previous Member

    ******

    "In spite of the fact that this car represented one of the few highly scientific and rational designs ever formulated for the record..."

    Whoever said that was a *****. Highly scientific and engineered designs have been the rule for the absolute record rather than the exception.
     
  4. kach22i
    Joined: Feb 2005
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    kach22i Architect

    I think that comment/quote was made in reference to getting around the rules.

    I can look at F1 cars and tell you they are not the best way to go fast around the track, but the rules limit how far down the front wing can go and how large the rear wing is. Form does not follow function, form follows the rules.

    Another example:
    http://www.core77.com/blog/materials/default.asp?p=3
    [​IMG]
    If the rules allow it..................go for it.
     
  5. RatliffFranklin

    RatliffFranklin Previous Member

    Fia

    The story published at the time was negotiations with Pininfarina broke down when they refused to identify Schmid as a Porsche engineer.

    At the time Schmid designed the car, it was either wheel-driven or nothing. The FIA had no category for jet/rocket cars. To this day, the FIA has never ruled on the percentage of residual thrust allowed in a wheel-driven car.

    Schmid's design allowed energy to be recovered from the jet exhaust and converted into shaft horsepower without a heavy and complex gearbox. The estimated weight for Schmid's whole car was only 1,500 lbs more than just the ENGINE in Campbell's turbine streamliner.
     
  6. kach22i
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    kach22i Architect

    There you go.

    It's a niffty idea, but a gas turbine such as used on helicopters, hovercraft and fast attack boats would be straight foreword.
     
  7. RatliffFranklin

    RatliffFranklin Previous Member

    Rules

    In land speed racing the only basis for legitimate rules is establishing a baseline to measure progress through performance. When the rules no longer allow for innovation or new technology, they cease to be legitimate.
     
  8. kach22i
    Joined: Feb 2005
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    kach22i Architect

    I agree with you, but the rule makers throughout history have not. In the early 1900's Porsche would have rulled the roads with 4WD electric hub racers, and Indy would have only 4WD turbine powered racers.

    There are great quotes about racing rules, something to the effect of homogenized mediocrity and a level playing field.

    Diesels in racing............there, now we have a little innovation, but they had to bend quite a few rules to make it possible.
     
  9. RatliffFranklin

    RatliffFranklin Previous Member

    If somebody is looking for big horsepower in a big boat it's a different story.
     
  10. RatliffFranklin

    RatliffFranklin Previous Member

    Rules

    With the introduction of jet and rocket cars, it was the FIA that was forced to change, not the racers.
     
  11. kach22i
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    kach22i Architect

    I'm sure it was.

    Makes me think also of professional fishing tournaments, no live bait, artificial lures only!:cool:

    Then there is common sense or lack of it.;)
    http://www.portlandart.net/archives/news/index.html
    [​IMG]
     
  12. RatliffFranklin

    RatliffFranklin Previous Member

    Innovation

    At first I had some hope for F1 when I read they were writing new rules to introduce kinetic energy recovery systems, but then I found out the powers that be were continuing their pasteurized homogenized cookie cutter clone mentality so it's going to be the same old BS just with different technology. The KERS units themselves are neat, though.
     
  13. kach22i
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    kach22i Architect

    I'm not familiar with it, found this pdf, says 2010.

    http://www.paddocktalk.com/news/htm...95__2011_Power_Train_Regulation_Framework.pdf

    Here is an article with pictures.
    http://www.motorauthority.com/news/motorsport/brake-energy-regeneration-in-f1-by-2009/
    [​IMG]
    [​IMG]
     
  14. RatliffFranklin

    RatliffFranklin Previous Member


  15. kach22i
    Joined: Feb 2005
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    kach22i Architect

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