Beetron in an eGull

[bruce.markle]

RC –

Thanks for the link, I now understand how the prototype works and why things are where they are. A single moving part, but 3 pistons on one rod. The two separate combustion chambers are basically where the silver and brown fins meet, and the combustion pushes the end piston away from the center. I guess these outside pistons must be relatively thin discs since the exhaust port is so close to the end. There are 2 separate plenums just inboard of the combustion chamber, one per side, on each side of the center electrical coil. This center piston alternately sucks mixture into the plenum, and then blows it into the chamber upon its return. Guessing this one has the center rod cone intake valves like in the diagram.



A lot of really neat ideas!



The “how does the exhaust get ported” question was from when I mistakenly thought the combustion was on the outside end of the piston, not on the inside end…



Thanks for the thread. I love this stuff. Hoping he gets the next version (the 2 opposed free pistons with center combustion chamber) working soon…



Regards

Bruce

[rahulchoudhary73]

Brown is a good color, this is the right engine side approach for hybrids. something like this can generate far more electrical power, compared to the standard alternating pole magnet configuration

There's even a 20kW/kg battery already working out there...

Rahul

[earthstaraircraft]

20 kW/kg? That's 18 times the current capacity! Tell me more!
Happy Flying
Mark

Sent from my iPhone

[rahulchoudhary73]

wish I could today; does makes those kW"h"/kg battery ratings obsolete. noticed it while double checking six month old facts, mentioned on slide4 with a picture in slide3 (top right) here

http://www.launchpnt.com/portals/53140/ ... tation.pdf

Guess it is a new material combination like how NdFeB magnets were a serendipitous discovery. something this small has got to be simple, low cost and quickly scalable, unless it has to wait for 88kW rapid chargers and fusion. seems to be working over a year now, no other info publicly available, guess poring over the DOE/DARPA/ARPA-E/SBIR/STTR grants in the last couple years may reveal some more info... what do you think?

soft landings,
rc

[rahulchoudhary73]

it's a hermitic ally sealed stable very high pressure liquid electrolyte lithium ion battery, composition in known; there were some navy experiments few decades ago, used to call them pressure cooker cells which tended to blow up

somehow i was reminded of david bowman in the space odyssey saying, my god, it's full of stars!

rc