3 ms·

Out Rotary Engine

18 points by worik 3y ago

jauntywundrkind 3y ago
> Another is for a portable 10 kW generator, which is 75 percent lighter and far more compact than the US Army's current Advanced Medium Mobile Power Source generator, as well as being about 8 percent more efficient. It's really fun to think of what compact full series hybrid systems might do. Although it is lamentable that batteries alone aren't always enough.
porkbeer 3y ago
Same issue as 'normal' rotaries. It has apex seals. They will see the same amount of wear and failure as the other configuration. The marketing around this and the journalistic misunderstanding gives me serious huckster vibes.
- r2_pilot 3y ago
  If you read the article, it specifies that the apex seals in this case are stationary relative to the other components which won't see as much wear or blow-by of oil, which should keep it from needing topped off continuously.
LispSporks22 3y ago
Would this be good on motorcycle?
OhMeadhbh 3y ago
11 funding rounds, the last one being a "crowdfunding" round. What's new in round "L" that wasn't there in 2007's round "A"? I always get a kick out of these "eternal startups" that don't have customers or a sales pipeline. At least they're getting some DARPA money.
karmakaze 3y ago
I suspected this was LiquidPiston before opening the page. There's been quite a lot of their marketing showing up in my recommended content. > But LiquidPiston has designs on applications outside of low-volume, hand-built drone engines or military generators that are exempt from emissions regulations. That's where a recent $30 million funding round comes in. > "That's a big reason why we are raising outside capital, to cross these productionization and emissions bridges so that we can get to the commercial market. I would estimate about two years to where we are hopefully delivering with the DoD and then maybe one or two years after that for broader commercial markets," Shkolnik said. I'm still waiting to see these larger real-world applications and performance specs as a we're still dealing with modelled/extrapolated guesses.

18 points by worik 3y ago

> Another is for a portable 10 kW generator, which is 75 percent lighter and far more compact than the US Army's current Advanced Medium Mobile Power Source generator, as well as being about 8 percent more efficient. It's really fun to think of what compact full series hybrid systems might do. Although it is lamentable that batteries alone aren't always enough.

porkbeer 3y ago

Same issue as 'normal' rotaries. It has apex seals. They will see the same amount of wear and failure as the other configuration. The marketing around this and the journalistic misunderstanding gives me serious huckster vibes.

r2_pilot 3y ago
If you read the article, it specifies that the apex seals in this case are stationary relative to the other components which won't see as much wear or blow-by of oil, which should keep it from needing topped off continuously.

LispSporks22 3y ago

Would this be good on motorcycle?

OhMeadhbh 3y ago

11 funding rounds, the last one being a "crowdfunding" round. What's new in round "L" that wasn't there in 2007's round "A"? I always get a kick out of these "eternal startups" that don't have customers or a sales pipeline. At least they're getting some DARPA money.

karmakaze 3y ago

I suspected this was LiquidPiston before opening the page. There's been quite a lot of their marketing showing up in my recommended content. > But LiquidPiston has designs on applications outside of low-volume, hand-built drone engines or military generators that are exempt from emissions regulations. That's where a recent $30 million funding round comes in. > "That's a big reason why we are raising outside capital, to cross these productionization and emissions bridges so that we can get to the commercial market. I would estimate about two years to where we are hopefully delivering with the DoD and then maybe one or two years after that for broader commercial markets," Shkolnik said. I'm still waiting to see these larger real-world applications and performance specs as a we're still dealing with modelled/extrapolated guesses.