12 a

Paul,
  Are you familiar with the Mistral 2 and 3 rotor aircraft engines being developed in Europe. Do you know what is different from the Mazda engines that you have worked with and what they are doing?
Thanks

Julian Morrison

They are near identical to the side port Mazda's.
P-ports would have given them 20% more power.

They attempted to FAA certify the rotary for 15  or 20 years which was an economic mistake.
They ran out of money. They should have just sold parts to the experimental market. There are a few videos on my youtube site. See the key search word below.

Here are some pictures from the factory in Geneva.


Paul Lamar

Julian,
I had just chatted with Mistral, they claim certification now and from the prices for engines they are quoting it sure seems like it. Their engines are bit heavy for the power output. I agree with Paul, P=Ports would have been a better approach and better power to weight ratio.
Robert Jones


There is US certification and EU certification. Typically when automotive parts are used
in EU certified the engines are not allowed to be overhauled. They must be thrown away
after a certain number of hours. Typically 1500 hours.

Actually this makes a lot of sense with a piston engine. Even tho a piston engine
crankshaft does not have cracks at TBO it may develop cracks after a few more hours use.


Paul Lamar
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