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  #21  
Old 12-03-2017, 09:59 PM
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The Mole The Mole is offline
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I would like airdave to do this project. If anybody knows how to do a series of an aircraft it airdave just look at all the P-51s. I doubt if he would do it but if I had the money to pay to have it done he's the guy that would get the money.
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  #22  
Old 12-03-2017, 11:45 PM
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Might I recommend Osprey Publishing XPlanes #3, North American X-15 book as a good reference source? It is less than $8 for a PDF copy from their web site.
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  #23  
Old 12-04-2017, 06:59 AM
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An update: Started cutting paper today. Got the nose section done. I used joiner strips for two of the sections, but otherwise glued the edges. (Or, more accurately, glued bulkheads together....) So far, so good. This really is a well-designed model.

One of the things I'm looking at doing, looking ahead, is weathering the vehicle with pastel chalks. The X-15s got kind of grimey and paint burned off. (The vehicles' blue-black color came from the Inconel it was built out of, but some panels were painted black.)
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  #24  
Old 12-06-2017, 01:00 PM
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Good luck with the model! Will you do a build report?
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  #25  
Old 12-06-2017, 09:22 PM
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Originally Posted by Paper Kosmonaut View Post
Good luck with the model! Will you do a build report?
I've got the chines halfway on, so I'm probably too far along to start a build report. The chines have been the most frustrating part so far; the internal formers just didn't seem to work. I'm sure I'm the problem. Probably my own impatience, or the fact I shrunk the model to 1/48th.

It seems all the X-15s out there that I'm aware of -- Ken's, Henry Yuen's, the one at Fiddlers Green -- have you build the fuselage then add the chines. Ken's fuselage "chunks" (the individual fuselage sections, glued end-to-end) came out well and it made me wonder why some designer doesn't just add the chine sections to the "chunks," and have you assemble the model that way.

Then again, I'm not a designer....

Last edited by dhanners; 12-06-2017 at 09:37 PM.
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  #26  
Old 12-07-2017, 03:39 AM
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I just guess it's because it is a less complicated set of shapes to design that way. An X-15 chine is in this case just a kind of parallellogram with more or less outward bent sides. The fuselage with the chines incorporated would have to follow the cross-section. That means segments of fuselage parts which are then clad with a paper hull. This leads up to a much more blocky shape with a less fluent, curvaceous shape.
Another method could be the way Maksim of Maksart models designs his aircraft fuselages: A whole load of crossing bulkheads that create an internal structure which is then clad with an outer layer of paper as the hull. With the right shapes, you could get it very very rounded but this is one of the hardest ways to get curves into a paper model, I think. Also one of the best. Just look at his Su-27.
I also am no designer but I can see why Ken (and the others) made the X-15 chines as separate parts.
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  #27  
Old 12-07-2017, 04:48 AM
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I guess the other consideration (at least in Ken's case) is that his separate fuselage sections are divided at panel lines, as are the pieces that make up the chines -- and the panel lines on the chines don't match up with any panel lines on the fuselage. They were separate structures in real life, after all.

I preshaped the chines, but still had difficulty with them. I finally got them on and they look fine.
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  #28  
Old 12-07-2017, 01:40 PM
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Looking forward to see the end result.
Happy building, Dave!
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  #29  
Old 12-07-2017, 10:59 PM
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Looking forward to see the end result.
Happy building, Dave!
Thanks. I'm hoping to get it wrapped up by this time next week. I want to experiment with some chalk weathering, as the real X-15A-2 was pretty heavily weathered. An in-progress shot, pre-weathering:
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"Edge gluing"?-img_5940.jpg  
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  #30  
Old 12-08-2017, 12:48 AM
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Originally Posted by dhanners View Post
I'd recommend Dennis Jenkins' great book "Hypersonic." It is filled with B&W and color photos, color side-views, technical drawings and a ton of information, including flight-by-flight details of the program's 199 flights.
I'll second that.
Quote:
and it's too darn heavy to stick in luggage when I've got a 50-pound limit.
And that!
Yep, it is a 10 inch, 260mm, square 264 page hardcover with every page that slick clay-coated paper. Pretty much like sticking a half-and-half block of lumber and ceramic in your bag
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