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User Artwork / Re: General Dynamics ATF
« Last post by Grey Havoc on Today at 01:34:30 am »
Not a bad job at all!
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User Artwork / Re: Daniel Uhr artwork
« Last post by Zizi6785 on Today at 12:27:43 am »
I started...
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User Artwork / Re: General Dynamics ATF
« Last post by ScrutorAudax on Yesterday at 04:44:57 pm »
Here's some more.
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User Artwork / Re: General Dynamics ATF
« Last post by ScrutorAudax on Yesterday at 04:42:50 pm »
I found a bunch of pictures of the GD ATF rendering.  I couldn't tell if they were from Nils_D's model or not.  They look very good.
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User Artwork / Re: General Dynamics ATF
« Last post by ScrutorAudax on Yesterday at 04:38:02 pm »
Quote
Not that it would help with stealth but how about ventrals like the F8U-3?
 
 
The main issue with that is clearance on takeoff.  The XF8-U3 had folding ventrals (same with the North American-Rockwell FX). 
 
Quote
Is a vertical tail with two ventral tails as effective as one big vertical or two smaller verticals?
 
 
Yes, but they are all design compromises.  It depends on the aerodynamic layout of the plane and its design objectives.  For stealth it's a bad idea because you would have three radiators instead of two or one, and the ventral fins would make it even worse because of the increased tolerance for the folding mechanism.  For high-alpha properties it could possibly be better.
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User Artwork / Re: General Dynamics ATF
« Last post by sferrin on Yesterday at 04:17:33 pm »
In the case of a delta, twin tails will be shielded by the wing regardless.  In addition to the shielding by the wing, one of the twin tails will be shielded by the other.

Not that it would help with stealth but how about ventrals like the F8U-3?  Is a vertical tail with two ventral tails as effective as one big vertical or two smaller verticals?
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User Artwork / Re: General Dynamics ATF
« Last post by ScrutorAudax on Yesterday at 02:45:02 pm »
In the case of a delta, twin tails will be shielded by the wing regardless.  In addition to the shielding by the wing, one of the twin tails will be shielded by the other.
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User Artwork / Re: Daniel Uhr artwork
« Last post by Geist on Yesterday at 10:29:04 am »
If we want of something bigger, it would be those Arado fighters. Their colour profiles are very small in the bookazine, especially compared to their original size! :) ;)

In fact, even the images I post here are smaller than the original. Some are five times bigger. :)
I do this to make easier the paint. Regarding to the published profiles, they must be smaller - there is a space restriction.
Even if there were only my work in a double page it would be a little smaller than the original.

There are two ways to see it in its final size - digitalfile or in a framework. Unfortunately it is not a good thing to post it in full size - It could be used by third without authorization - a headache, for sure!
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Propulsion / Re: What-if Engines
« Last post by Kevin Renner on Yesterday at 03:44:20 am »
The French did build two differnt H-24s post-war. The Arsenal H-24 and the Hisso H-24. The Arsenal was based on Jumo components while the Hisso was based one the latest Hisso V-12. These types of engines were certainly easier to develop than some of the other engines proposed in the late '30s and early '40s such as Wrights Tornado and any of the other inline radials. Because of the construction methods used in most liquid cooled inlines were to some degree modular the arrangement of the engines into H-24s allowed the use of crankshafts, connecting rods, cylinder blocks, heads, etc. The problem is then in the design of the crankcases, gear reductions and solving any vibration issues or lubricating issues. Two issues that ultimately killed the Vulture. Next comes the issue of size. These layots for the most part were better suited to large aircraft than fighters. The exceptions in my mind would be the inline radials such as the Jumo 222 or the Tornado. But in the end the coming of the Gas Turbine did in all these wonderfully complicated symphanies of mechanical motion. These large engines can almost be thought of as the aviation equivilant steam locomotives. Not for their purpose or obselescence (sp) but their wonderfull internal mechanical motion. As i understand it one of the big issues with the X layout was the rod design.

One wonders what some of these would of sounded like.

I'm reminded of the Matra V-12s used in F-1 in the '70s. Ferrari mechanics would look wistful at the sound of the Matra remmebering Ferrari V-12s of the past.
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User Artwork / Re: Daniel Uhr artwork
« Last post by Zizi6785 on Yesterday at 02:44:21 am »
If we want of something bigger, it would be those Arado fighters. Their colour profiles are very small in the bookazine, especially compared to their original size! :) ;)
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