Hi  all.
Is  there  anyone  in  the
group  with  a  rotary
powered  heli,  or  have  an
ongoing  helicopter
project  using  rotaries ?

Best regards.
BenSison

Lots. Unfortunately most of them probably failed because
the designer underestimated the rotary cooling
requirements.

A large fan mounted on the front of the e-shaft would be
called for and the engine derated for that power loss.

This was done well by Robinson.

The cooling air should be taken in at the very front and
exited
at the rear to take every possible advantage of the waste
heat.

Paul Lamar

I have a plan for putting a turbocharged two-rotor in a Rotorway.  The
Rotorway is a good candidate because it's already liquid cooled and my
concept for the drive will simplify the transmission as well as get rid of
some weight.  There are Rotorways available with blown engines for very
reasonable money.  I just haven't had time to get to this project yet.

Steve Brazil


Steve,

Would you know what engine RotorWay is using. On their website is
essentially no information other than a number "RI
600N Engine".  Do they use a Lyc or such?

Rolf


They build their own water cooled VW based horz opposed 4 cyl.
It was done about 30 years ago. Note where the exhaust pipes come
out of the heads.

I think they are a bit optimistic about the 137 HP.
They don't appear to be de-rating it from the cooling fan losses.

The cooling is nicely done however.

Paul Lamar

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