SNIP...

I think David's idea is a  significant simplification for our cooling
systems and a major breakthrough  We can get rid of p-cans, the
overflow tanks, the complex plumbing, the continual re-introduction
of air into the system, it will work at all attitudes.  We can preset
the system pressure and monitor the systems health by looking through
clear/translucent canister or by monitoring the pressure gage inside
the cockpit.  In one simple stroke it transforms the auto cooling
system into a no compromise aircraft system.   Yahoo!!!!     Jerry

Hold on Jerry :)
Not true. In effect it is a P-can with a piston. Same structural problems.
It is far more expensive to fabricate requiring precision machining.
Further more it has a nasty failure mode if steam is generated.

Paul Lamar ...No rotor no motor.

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