Comments by "" (@manofsan) on "Искаженное восприятие" channel.

  1. ​ @Geoff Strickler - if they had a 10hp version, it would be great for a paramotor, because it probably has exceptional power-to-weight and a wide rpm range.
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  2.  @ddselvig  - it's probably got way more longevity and TBO than a turbine. Perhaps side seal wear could be addressed with (ceramic) inserts? They said they have a hydrogen-burning version working. I wonder how they lubricate that?
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  3. ​ @Joe Idan - but rotary engine is capable of burning even hydrogen. I'm not sure what lubricant is used in that case. Hydrogen is a green fuel, and even if the early rollout of the engine has it burning hydrocarbons, it would be relatively easier to transition to hydrogen using this same type of engine platform.
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  4. Thanks for that info, very insightful. Does it start well in the cold? Aside from seals and cooling, what about the emissions due to the oil being burned? How do you deal with that?
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  5. haha, now the whole engine itself looks like a big dorito
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  6. ​ @Warped Perception - wait - how do they lubricate this hydrogen-powered rotary engine? Do they put lead in the hydrogen fuel, just like leaded gasoline? Or do they somehow mix in some oil as lubricant? Hydrogen is a gas, so I don't see how you mix the lubricant in there.
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  7. I would love to see this engine in a paramotor. Even a 10-hp version could be good.
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  8. Why do they call it a "cycle" when it's really just a sequence or progression? "Cycle" implies something that happens over and over again, but all these things (intake, compression, combustion, expansion) are really happening concurrently or in succession. Just a legacy phrase, I guess? 🤔
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  9. RX-7 was a pretty popular use case, back in the day. There are still many enthusiasts.
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  10. ​ @Tisimo - paramotors are the smallest manned aircraft, and mainly use 2-stroke engines for weight savings. But such engines are unreliable and can cut off while in flight. This rotary seems like it would be more reliable, even while providing good power-to-weight. If there was even a 10hp rotary model, it would be suitable for paramotoring.
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  11.  @blakethornsbrough1528  - what happens if this is operating on a small ultralight aircraft @ 10K feet? Wouldn't colder air provide better/enough cooling?
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  12. ​ @Blake Thornsbrough - what people had the most problems with on the old Mazdas were the apex seals wearing out or breaking. Does this new design look like it's solved those problems? I want to know why this new design might be better on those issues.
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  13. ​ @Geoff Strickler - so why hasn't this design taken off yet? Hard to believe there's no problems with it. Is it an emissions problem like the old RX-7s had due to oil in the crankcase? These Liquid Piston people now have a model that burns hydrogen, but I'm curious if that needs any oil, or if it's zero-emissions.
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  14. ​ @Joe Idan - why do you say this? Why would it be unreliable? Why would it not be cheap? And 'green' is a relative thing - it could be more 'green' than other alternatives for a given application.
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  15. ​ @Geoff Strickler - but what does a hydrogen-powered rotary engine use for lubricant? When the fuel is conventional gasoline, we see the lubricant oil is added to the fuel for lubrication. But how is lubrication provided for a hydrogen-powered rotary engine?
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  16. Would the weight of this thing scale up linearly? If a 4hp engine is 4 lbs, how much would a 100hp or 150hp engine weigh?
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  17. How do we know the seals problem is solved? Do they have any data to support that?
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  18. ​ @Keith Romig - I know that Liquid Piston have demo'd a rotary that burns hydrogen. But I wonder if they have to put oil in that one too, or if it's zero emissions? I also wish they could demo their small rotary engine on a paramotor.
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