It needs some windows.

The shape reminds me of a rubber pool toy submarine my boys used to have, stunning how far that thing would go under water with a mild push.



But. . . . .(wait for it . . . .) does it have a 'chute?

IIRC, Wasabi (Justin Gillen) was involved in some of the earlier low & high-speed taxi tests. Dunno if he is still working the Celera program.

328 dollars per hour to fly. Seems accurate.

It basically builds off the aerodynamics seen in a Piaggio. Lifting body, laminar flow etc. Piaggio cabin similar in that it has big cross section too.

No question these designs are better than the standard tube.

I personally would rather have 2000 mile range and a turbine bolted onto the back vs a piston anything.

Nice to see people pushing the envelope.

I guess it’s OK to have a piston engine at 50,000 feet.... you can glide a long way if it quits!

Wait, what’s the time of useful consciousness at that altitude ?

Seriously, that’s a hostile environment if anything goes wrong. It takes a lot of redundancy and reliability to get to an acceptable risk level in a harsh environment.

With explosive/rapid decompression? Effectively zero.

What does the Citation X do?

We've been flying airplanes around up there for quite a while now. The pressurization issues I recall have all been down in the lower flight levels, though I realize that's more to do with population density than anything else, still they're extremely rare events. I'm pretty sure we're banking on the rarity of the events.

If you actually wanted to mitigate the risk it would require a lot of automation. To begin with it would require an autopilot that activated immediately when the cabin exceeded a certain rate of climb, or a threshold value, and then initiated an immediate emergency descent. From FL500 to 10,000 feet that would require an average rate of descent of 8,000 feet per minute in order to get the meat servo to an altitude that would keep their brain alive within five minutes.

Assuming the occupants were not wearing a fully sealed oxygen mask at the time of a rapid decompression they'd be asleep before they could react. TUC at and above FL500 is 6 to 9 seconds, for someone who's fit. Subtract the standard 3 second surprise factor and you have 3 to 6 seconds to select Pressure on the mask before you become too stupid to remember what you need to do, and none of that's taking into account the blown out ear drums, bleeding nose and eyes, possible embolism, etc. Even with pressure breathing you're still just delaying the inevitable. The airplane is going to have to do the work, and I would plan to have it continue the work all the way to landing and brakes set.

It's not impossible, but it makes the idea of a manned system a lot more complicated.

You're thinking of the Raptor.

[youtube]https://youtu.be/5gnEknj242M[/youtube]

Nope.

Justin Gillen (Wasabi) also worked both the Celera program. In 2017 he did the initial low and high-speed taxi tests to 1.1x Vr. Dunno if he is still involved with Otto Celera.

https://drive.google.com/file/d/1XTlnLO ... Xa7R8/view

I disagree, I think cameras and screens should be the new "window" on pressurized airplanes. Stronger, lighter and cheaper to build.

I disagree, I think cameras and screens should be the new "window" on pressurized airplanes. Stronger, lighter and cheaper to build.

Nope.

Justin Gillen (Wasabi) also worked both the Celera program. In 2017 he did the initial low and high-speed taxi tests to 1.1x Vr. Dunno if he is still involved with Otto Celera.

https://drive.google.com/file/d/1XTlnLO ... Xa7R8/view

With explosive/rapid decompression? Effectively zero.

The times I find listed on the web are five, count’m 5, seconds at FL500