Interesting linear engine prototype - weighs 35 lbs.

[Wrenchturner44]

https://www.astronaerospace.com/

 

[oldhp]

Interesting. The American public won't like the pop-pop-pop sound so a really quiet exhaust will be needed if powering a car. Cool though!!!

 

[Kuato]

With a single cutout for each...disk?...rotor?...it will be unbalanced at high rpm. They'll need to have two (or more, balanced) cutouts to make it work.

 

[Kurtatron]

So it is glorified straight cut gears with combustion occurring between the two gears? I won’t hold my breath for this one.

 

[vw7674]

It sounds like a broken Wankel.
Can they show it running at 18,000 rpm ?

 

[JohnnyG]

Looks like a terrific design to me! If you think this thing will vibrate a lot, I sure don't see it in the running example. It certainly can't be as bad as 4 reciprocating pistons!

 

[Wrenchturner44]

My apologies, I also meant to attach this video where Autoline has a more in depth interview with the developers.

They do a better job explaining how it works and the initial use cases for this engine.

 

[meep]

Fascinating. I’d like to see one run. I think it would be picky to fuel/oil/contamination in similar manner as the wankel, namely with that “tooth” and all of its time spent scrubbing on the inside of its arc.