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05 Dec 2019, 20:09 [ UTC - 5; DST ]


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 Post subject: Re: Otto Aviation Celera 500L Flew This Week
PostPosted: 14 Nov 2019, 16:10 
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Username Protected wrote:
In the case of the SMA the turbo is turning in the ballpark of 16,000 RPM...

I highly doubt that. I haven't seen any of their mapping but generally speaking something that size should be spinning maybe ~7X that fast


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 Post subject: Re: Otto Aviation Celera 500L Flew This Week
PostPosted: 14 Nov 2019, 18:57 
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Company: Paramus Flying Club
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Username Protected wrote:
In the case of the SMA the turbo is turning in the ballpark of 16,000 RPM...

I highly doubt that. I haven't seen any of their mapping but generally speaking something that size should be spinning maybe ~7X that fast


You are correct sir, 146,000 RPM is the published limit for the gen 1 engine. So ~9x what I said.

https://www.google.com/url?sa=t&source= ... iyZdDGkmFz

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 Post subject: Re: Otto Aviation Celera 500L Flew This Week
PostPosted: 14 Nov 2019, 19:30 
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Grob G850 set the altitude record for pistons at 60000ft, so it's not impossible to imagine a scenario where a diesel engine could reach the same altitudes.

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 Post subject: Re: Otto Aviation Celera 500L Flew This Week
PostPosted: 14 Nov 2019, 20:30 
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Username Protected wrote:
Grob G850 set the altitude record for pistons at 60000ft, so it's not impossible to imagine a scenario where a diesel engine could reach the same altitudes.


I believe the Grob used a piston turbine hybrid engine. The props were also huge making a high wing configuration all but necessary.


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 Post subject: Re: Otto Aviation Celera 500L Flew This Week
PostPosted: 15 Nov 2019, 11:50 
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Username Protected wrote:
Grob G850 set the altitude record for pistons at 60000ft, so it's not impossible to imagine a scenario where a diesel engine could reach the same altitudes.


No but it sure makes regular ops at FL650 a stretch.


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 Post subject: Re: Otto Aviation Celera 500L Flew This Week
PostPosted: 15 Nov 2019, 13:47 
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I liked the earlier comment about autonomous freight ops, point to point. Seems like a good mission for this type of airplane.

Take the human out of the equation, and go as high as you want. Being slower than an airliner and taking a hour to climb are less of a problem.

Maybe a human pilot in a pressure suit for proof of concept, then take the human out when the tech and regulators are ready.


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 Post subject: Re: Otto Aviation Celera 500L Flew This Week
PostPosted: 27 Nov 2019, 09:57 
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I was at KVCV last night.
I asked the ramp guys if they see the OTTO flying much.
They said yes it's been flying regularly.


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 Post subject: Re: Otto Aviation Celera 500L Flew This Week
PostPosted: 27 Nov 2019, 10:15 
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Company: Aerial survey (not my cessna)
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Username Protected wrote:
Grob G850 set the altitude record for pistons at 60000ft, so it's not impossible to imagine a scenario where a diesel engine could reach the same altitudes.


No but it sure makes regular ops at FL650 a stretch.


Which makes Concorde an even more incredible bird/ops.

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 Post subject: Re: Otto Aviation Celera 500L Flew This Week
PostPosted: 27 Nov 2019, 11:14 
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Joined: 06/24/18
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Username Protected wrote:
I was at KVCV last night.
I asked the ramp guys if they see the OTTO flying much.
They said yes it's been flying regularly.



Surprising that there's no video of it flying yet...


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