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

Best regards.
Ben    Sison

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

What's the power/weight ratio in the case of a Wankel powered helicopter ?
Would the turbo compound be a better solution ? Thanks,
Guido Bartolomei

Always.

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