The Natural Philosopher wrote:
Andy Burns wrote:
Dave Plowman (News) wrote:

Doctor Drivel wrote:

The seal problem was solved decades ago. The Russians have a
design that has the seal in the engine body, which can easily be
replaced by removing a plate - DIY job.

Anyone else see the flaw in the Russians being at cutting edge car
engine design?

You'd think with Mazda effectively canning rotary engines (or at
least pressing pause) that now would be the time for the ruskies to
make their bid for supremacy ...

The RX8 is still made.

The long and the short of the rotary engine is it inst really any
better than a conventional one in any way. They were fuel hungry and
wore out quickly and were hard to make.

Nonsense. They were easy to make having few moving parts. They never wore
out quickly once the problems were ironed out. Fuel efficiency? Not good
when running in the same operating conditions as in a piston IC engines.
But when as a high speed, constant speed, running at it most efficient sweet
spot", they shine.

For aircraft if you are burning fuel, use a jet, fan, or turboprop.

For helicopters use a rotary as well. The Russians do.