Controllable Pitch Propeller for lower power & electric motors

Discussion in 'Props' started by kistinie, Jan 2, 2010.

  1. mark775

    mark775 Guest

    "i refuse all these heavy and expensive devices." - then you'll be leaving?
     
  2. Submarine Tom

    Submarine Tom Previous Member

    LOL...lol...
     
  3. kistinie
    Joined: Aug 2007
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    Location: france

    kistinie Hybrid corsair

    Yes for my personal need, no if we consider that forum work is for the benefit of all, all that all need something a bit different and search for it.
    Keeping ICE, CPP in production is compulsory to protect the jobs and the existing industry
    Now not to any cost, doing anything.

    Smart light ICE+CPP+EM group will be the very next standard, for a short time, then quickly replaced by full electric drive without fuel or oil.
    This can be done in two times 7 years if leaders and industry accept the deal, never or with tears, if they don't as users are totally fed up with waiting the necessary and possible improvements that do not come.
     
  4. apex1

    apex1 Guest

    Right, have forgotten them, though well known in the North. Thanks!;)
     
  5. kistinie
    Joined: Aug 2007
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    Location: france

    kistinie Hybrid corsair

    All these manufacturers, doing ICE, EM, CPP should talk more and do a compact light item being all in one.

    A motor, a generator, a CPP drive

    Fairly easy
    Many part suppressed for the same service. Weight and cost saved make the group easier to sale, and at the end, much cheaper to use.
    Only winners at the end

    This looks like a logical solution to me if you fell like respecting all the needs.

    Here are simple drawings.
    This version includes also an air compressor for diving equipment refill.

    Such integrated group can be very inexpensive to make as simpler, with only one controller integrated, less expensive castings, less power lost, less different models, as the same model can fit much more different type of boats without any modification.
    So globally, far less references to look after, less parts, less cost, less weight, more efficency.

    This way of thinking is for me the level 1 of a respectable clever industrialisation of goods.
    Each of us follow our own ways, i accept with grace all the possible comments about these solutions. Can it be moral or technical ;-)
     

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    Last edited: Jan 13, 2010
  6. FAST FRED
    Joined: Oct 2002
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    Location: Conn in summers , Ortona FL in winter , with big d

    FAST FRED Senior Member

    then quickly replaced by full electric drive without fuel or oil.


    GREAT for all of us that need a range under power of under 3 miles.

    FF
     
  7. kistinie
    Joined: Aug 2007
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    Location: france

    kistinie Hybrid corsair

    GREAT !
    YES !

    Very happy to read you agree on 3 miles.

    3 miles yes
    Just do not forget 0 that goes with
    3 + free, so 0, 00, 000, 000... miles of renewable source.

    I perfectly know that in numerology 0 does not exist.

    How many 0, free miles do you have after, free, sorry "3" ?

    The worst electric boat goes today for at least one 0.
    00 in a diesel hybrid version
    Infinite
    Vertiginous !
    00000000....000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000......................0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.............................0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, on a windmill boat or solar boat.


    Maybe you did a smart TEXAN joke ?

    I beg your pardon to be so primitive and ignorant, i have never been there, i more familiar with Belgian, Swiss, Jews and arabs ones.
    What is the difference with American ones ?


    Very good indeed such a game on words sense and sound , what is the Texan English name for that of spirit ? I love it !

    Please,
    Do you have another one :))
     
  8. kistinie
    Joined: Aug 2007
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    Location: france

    kistinie Hybrid corsair

    Whaou !!!!!
    Free energy of vacuum, made of 00000000000, great power breaking the limits.
     
  9. zwolfish
    Joined: Jun 2010
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    Location: Shanghai China

    zwolfish New Member

    Friction moment caculation in pitch control unit

    In one CPP, when pitch change, the pitch control unit need to overcome

    resistant moment of the blades.

    Generally the resistant moment(M) includes three parts:

    hydrodynamic moment(MH), moment caused by centrifugal force(MC) and moment caused by friction force(MF) between blade flange and hub,

    M = MH + MC + MF

    Now i know MH and MC, but don't kown the ratio of MF in M, i don't know

    how to design the pump pressure value, i 'm newer for CPP design, this question warries me so much:( , so please give some instruction,
    thanks very much.
     
  10. powerabout
    Joined: Nov 2007
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    Location: Melbourne/Singapore/Italy

    powerabout Senior Member

    Where's the advantage at say 50kw over a fixed pitch and a variable speed engine?
    Could you get a electric motor running form a gen set that will happily run with a variable speed diesel engine?
    If you had say several diesel engines of different size then maybe but that gets very tight at the 50kw end of the market.
    Maybe batterys and solar for propulsion but how much weight for how many miles would that be and how long to recharge?
     
  11. apex1

    apex1 Guest

    Are you aware that you reply on a complete nonsense thread? That this is full of premature dreams, surreal phantasies and stubbornly repeated rubbish?
    The thread opener is our favourite "village idiot" and has proven to be that on every one of his posts.

    Regards
    Richard
     

  12. powerabout
    Joined: Nov 2007
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    Location: Melbourne/Singapore/Italy

    powerabout Senior Member

    Thanks Richard
    So clearly the answer is 'there isnt'
     
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