Several times, you mentioned that rotaries can run on jet A1 or
    other fuel
    oil.
    Of course it is not diesel cycle, but the normal ignition of the
    mixture  by
    the spark plugs.

    Paul can you give some clues:
    - on what it take to make this conversion: injection system,
    ignition system
    etc..?
    - on performance impact: I guess you get less horsepower at the same
    RPM;
    and what about torque ?
    - on consumption: for same horsepower regime, difference of jet A1
    burned
    compared to avgas.?

    I believe that a jet A1 rotary, in the 100 to 180 hp would have great
    opportunities in Europe for the experimental market. Avgas is gettng too
    expensive.
    Mistral is planning a jet A1 engine, but i expect it to be too much
    power
    (over 200hp) and money and weight for the average experimental
    builder in
    europe.

    Philippe CHENEVIER

    Its been done but not in that power range yet. Don't expect as much
    power or as
    low a fuel burn as a true diesel.  Here are some pictures of the
    Wankel Gmbh spark assisted
    heavy fuel engine of a few years ago. I saw this engine run at OSH
    back in the late 90's.
    It remains to be seen if the Mistral engine can generate more power
    than 200 HP on jet A.

    --
    Paul Lamar ...No rotor no motor.


And, since Paul didn't mention it this time (but you asked), if you know
the horsepower at a given RPM, you can calculate the torque.  It
actually probably goes the other way - dynos measure the torque over a
range of different engine speeds (RPM) and then calculate the horsepower
to be plotted..  There is no way to change the torque at a given engine
speed (RPM) without changing the horsepower at that engine speed (RPM) -
one is (by definition) dependent on the other.  You increase the torque
at 5000RPM, you also increase the horsepower at 5000RPM.  End of story.


Matt-


Well put Matt. Thanks. I'll try to use that in the future when the inevitable
torque question comes up again.

Paul Lamar ...No rotor no motor.

Thanks for this answer, but it is only qualitative. I would have liked some
order of magnitude

Well put for the torque. It is so obvious, I forgot...

I would be interested also by th eopinion of the rotamax people (Eric Barger
for instance)

Ph Chenevier



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