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Off-Topic Discussion => General Discussion => Topic started by: lostllama on November 29, 2020, 08:45:39 am

Title: New X-plane concept resembling GTF Pegasus
Post by: lostllama on November 29, 2020, 08:45:39 am
https://www.aurora.aero/2020/11/12/aurora-flight-sciences-to-develop-new-x-plane-under-darpa-contract/ (https://www.aurora.aero/2020/11/12/aurora-flight-sciences-to-develop-new-x-plane-under-darpa-contract/)

Well, it's only a model for wind tunnel testing purposes. But, those shapes.... :eek2:

More info here:
https://hushkit.net/2020/11/17/new-x-plane-aurora-crane-announced-for-darpa-our-analysis/ (https://hushkit.net/2020/11/17/new-x-plane-aurora-crane-announced-for-darpa-our-analysis/)
Title: Re: New X-plane concept resembling GTF Pegasus
Post by: Scourge of Ages on November 29, 2020, 11:12:49 am
That's really cool

(Direct image:)
(https://www.aurora.aero/wp-content/uploads/2020/11/Aurora_X-Plane_800x600-800x400.jpg)
Title: Re: New X-plane concept resembling GTF Pegasus
Post by: DefCynodont119 on December 02, 2020, 11:51:11 pm
Huh, interesting, I wonder how those hollow bits effect it's aerodynamics.



And because I can't resist the reference:

(incoming transmission)
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-----I---Think--It's--------funnnny--------------------
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-Can-you-here-me?-----------------------------------
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----------------------------are-you-there?-------------
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(end message)
Title: Re: New X-plane concept resembling GTF Pegasus
Post by: Luis Dias on December 03, 2020, 04:46:43 am
really cool :yes:
Title: Re: New X-plane concept resembling GTF Pegasus
Post by: starlord on December 03, 2020, 08:19:52 am
As far as I understand my aerodynamics correctly, those holes in the wings mean a big no-no as far as flying is concerned, as least as far as atmosphere flight is concerned.

Pretty much anything works in space though.

Someone might wish to print this model and put it in a wind tunnel.
Title: Re: New X-plane concept resembling GTF Pegasus
Post by: The E on December 03, 2020, 08:59:56 am
Those holes aren't an issue. Such concepts have been tried (https://en.wikipedia.org/wiki/Lee-Richards_annular_monoplane), and there are at least some designs (box-wing designs, to be specific (https://en.wikipedia.org/wiki/Closed_wing)) that are seemingly perpetually the next step in aircraft design for Boeing and Airbus.
Title: Re: New X-plane concept resembling GTF Pegasus
Post by: starlord on December 03, 2020, 11:33:03 am
Again, not a specialist by any means but the annular wing and close wing designs you show here don’t really compare with the Pegasus that much. The wing is clearly angular, and at this point I think you might end up with a wing actually grounding the craft (similar to those on racing cars).

Again, take it with a grain of salt, but it would be interesting to test this in a wind tunnel.

BTW: I think Messerschmidt tried the annular wing concept in a WW2 prototype.
Title: Re: New X-plane concept resembling GTF Pegasus
Post by: DefCynodont119 on December 03, 2020, 02:49:58 pm
They are testing a model of it in a wind tunnel, the picture literally shows the model inside a wind tunnel.
Title: Re: New X-plane concept resembling GTF Pegasus
Post by: starlord on December 03, 2020, 03:01:54 pm
Cool. I’d like to see the numbers...