Comments by "geemy" (@geemy9675) on "You May Not Like It But this Is What Peak Combustion Technology Looks Like - Rotary Vane Engine" video.

 @d4a engine swap with an espresso pump converted as a rotary vane engine?
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@Bryan-Hensley the pressure pushing on fixed surfaces is a force that doesn't produce any work, so no mechanical loss. all the work done is pushing on the moving vane, perpendicularly as explained, it also generates more torque because of greater lever. lower force, pushing further from the axle, and more constantly over time over a faster moving surface (high rpm) = win/win/win. that's less instant mechanical stress(doesn't require super strong components), but higher torque and power integrated over the whole power cycle. exhaust gasses at almost atmospheric pressure means all available thermal energy converted into mechanical work (less losses/heat) the thermal losses is a fair concern, as on Wankel rotaries, ideally the hottest part of the combustion chamber would be ceramic that can withstand very high temp, very low friction with thermal insulation the outside to prevent heat losses . it wouldn't be as bad as reciprocating engine getting too hot causing preignition and knock as long as the compression side temperature is kept in check. the cooling of the engine could happen at the end of the combustion chamber when the gas are less hot and have already released most of their energy but at. this point it's probably easier to make a small efficient turboshaft engine that runs at constant speed
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was about using springs to counteract the centrigugal force and maintain just the right amount of force against the sliding surface. the springs could be tuned so that the force is higher when the pressure is high (end of compression cycle/beginning of combustion) and when the volume increases/pressure goes down, rhe vanes would have lower pressure. you could also have stronger seal at peak power/high rpm , and lower friction at lower crusing rpm/medium load. the idle would have to be very high, a bit like a jet engine. but it could work for a generator /range extender that can work at only controlled rpm/loadsobviously there would still be a lot of sealing issues to address (vane against walls, vane against rotor) and carbon deposit could jam the vanes. could work for race engines too with high idle and closed gear ratios gearbox.
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@DgtalBreakz this is a jet engine which has advantages (peefect balance, almost zero friction, very high rpm) but no sealed combustion chamber means pressure generated by combustion can't just directly convert into useful work.
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@PigeonLaughter01 smart. vanes could be permanent magnets, and electromagnets could adapt the magnetic field to various rpm to have the best seal possible without contact... but fast rotating magnetic fields generates currents/losses/resistance if there's any you could also just apply electrical charge, electrically charges of same polarity will repell each other also with Force increasing with inverse of distance squared.
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