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  • Converting KW

    Hi guys this is random question basicly caused by a deckie getting involved with engines.

    Does anyone know how to convert Kilowatts to thrust in tonnes?
    Cheers

  • #2
    Originally posted by gadget123 View Post
    Hi guys this is random question basicly caused by a deckie getting involved with engines.

    Does anyone know how to convert Kilowatts to thrust in tonnes?
    Cheers
    0.74 kW = 1 HP and also 100 HP = 1 Tonne of force (and hence 74kW = 1 Tonne Force).
    ?Twenty years from now you will be more disappointed by the things you didn?t do than by the ones you did do. So throw off the bowlines, sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover.?

    ? Mark Twain
    myBlog | @alistairuk | flickr | youtube Views and opinions expressed are those of myself and not representative of any employer or other associated party.

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    • #3
      Cheers thats not giving me the right answers I think I need to do some more research.
      Thanks anyway

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      • #4
        kW to thrust in tonnes? I don't understand your question. Are you trying to find a tug's bollard pull or something?
        '... English is about as pure as a cribhouse whore. We don't
        just borrow words; on occasion, English has pursued other languages
        down alleyways to beat them unconscious and rifle their pockets for
        new vocabulary.' - James Davis Nicoll

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        • #5
          ...

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          • #6
            Not so much the gearing as the efficiency of the propellor(although that may be impacted by how fast the machinery spins it). I'm not sure the thrust is a helpful measure(it's easy to measure though!); what data do you have? Ideally take what speeds are generated by what sail thrusts, then compare with what engine power levels are required for the same speeds. It's not a terribly accurate way of doing it, but for practical purposes good enough.
            '... English is about as pure as a cribhouse whore. We don't
            just borrow words; on occasion, English has pursued other languages
            down alleyways to beat them unconscious and rifle their pockets for
            new vocabulary.' - James Davis Nicoll

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            • #7
              way too many variables, hull form, draft, wind speed, machinery type and efficiency. Ah and a hope the wind is blowing in from roughly the direction you plan to need it from, so ship still needs to have the correct engine power etc, for those times when there is no wind or it's the wrong sort of wind, to keep schedule etc, at best it save "some fuel" but theres a reason it has taken off (pun intended)

              There wont be a straight conversion, which is often how the green lobby gets away with reen washing subject, like the current fav about how good wind farms are, apart from when its either too windy or ermm no wind, green wash.
              Trust me I'm a Chief.

              Views expressed by me are mine and mine alone.
              Yes I work for the big blue canoe company.
              No I do not report things from here to them as they are quite able to come and read this stuff for themselves.


              Twitter:- @DeeChief

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