Celera 500L Interesting Diesel-Powered V-12

[MolaKule]

Otto Aviation Officially Introduces Celera 500L (Corrected) - AVweb

Otto Aviation has unveiled its Celera 500L passenger aircraft, stating that the prototype has already completed 31 successful test flights.

www.avweb.com

 

[Jeffrey Behr]

Otto Aviation Officially Introduces Celera 500L (Corrected) - AVweb

Otto Aviation has unveiled its Celera 500L passenger aircraft, stating that the prototype has already completed 31 successful test flights.

www.avweb.com

That's the first use of which I'm aware of the Reduced Emissions Diesel engine..

Four cylinders, eight pistons and no valves: Meet Cummins’ new 1000hp tank engine

A new opposed-piston diesel engine design yields more power and better efficiency from a smaller displacement, and is coming soon to a tank near you.

www.caradvice.com.au

...if that's the one.. WOW, a diesel light enough to use in an airplane!

 

[BusyLittleShop]

That's the first use of which I'm aware of the Reduced Emissions Diesel engine..

Four cylinders, eight pistons and no valves: Meet Cummins’ new 1000hp tank engine

A new opposed-piston diesel engine design yields more power and better efficiency from a smaller displacement, and is coming soon to a tank near you.

www.caradvice.com.au

Reminds me of the 1930 Junkers Jumo 205 / 207 the only successful aviation diesel powerplants...

 

[Cujet]

I also started a thread on this crazy plane. Not much in the way of real world information out there. I'll look for some ADSB data.

It's certainly interesting and I do believe there is much to admire. However, I dispute the performance claims.

A link to the thread I started:

Otto Aviation "Celera 500L"

https://www.thedrive.com/the-war-zo...PnCICVh9TpRQvDaSiR2o2xKUKAQlqDd5s4uOYn8o Quote: "the Otto Aviation Celera 500L, is definitely focused on potentially game-changing high-efficiency flight that has the potential to disrupt the aerospace marketplace" "It is unclear from the available...

bobistheoilguy.com

 

[MolaKule]

I also started a thread on this crazy plane. Not much in the way of real world information out there. I'll look for some ADSB data.

It's certainly interesting and I do believe there is much to admire. However, I dispute the performance claims.

A link to the thread I started:

Otto Aviation "Celera 500L"

https://www.thedrive.com/the-war-zo...PnCICVh9TpRQvDaSiR2o2xKUKAQlqDd5s4uOYn8o Quote: "the Otto Aviation Celera 500L, is definitely focused on potentially game-changing high-efficiency flight that has the potential to disrupt the aerospace marketplace" "It is unclear from the available...

bobistheoilguy.com

Thanks Cujet as I searched narrowly and only on Celera and not Otto.

I would think the engine would be suoercharged in order to attain its altitude and fuel consumption performance claims.

 

[Jeffrey Behr]

Thanks Cujet as I searched narrowly and only on Celera and not Otto.

I would think the engine would be supercharged in order to attain its altitude and fuel consumption performance claims.

These kinds of valveless engines--much like but not identical, functionally, to the 'old' Detroit Diesel two-cycle engines--require a 'supercharger' to force the fresh air into and exhaust gases out of the cylinders, but the Detroits, NOT having opposed pistons, used normal, cam-actuated intake valves.. The 'supercharger' is just a fixed-displacement Roots-type blower and does not pressurize the intake system.. Both the Detroits and the RED-type ACE used/use a turbocharger to pressurize the intake system, thereby increasing horsepower substantially.. Generally, the two-cycle Detroits generated high amounts of power per cubic inch* but were quite dirty, pollution-wise, and generally are no longer allowed in new highway vehicles.

* For example, the common 568-cubic-inch 8V-71 (that means 8 cylinders in a V configuration and 71 cubic inches per cylinder**) got to 318HP without turbocharging, whereas the four-cycle Cummins 280 of the 1960s required 855 CI for 250HP, turbocharged. IIRC, that 855CI engine got to 380HP when highly turbocharged; I don't remember (if I ever knew) how the turbo'd Detoits did.

** The common cylinder sizes in these modular Detriot engines included 53, 71, 92, and 110 cubicinches per cylinder.