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B-47 9th Scale, Boeing Stratojet...In The Middle

Old 11-10-2011, 02:55 PM
  #126  
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Default Scale Modeling Is 90% Resource Utilization

While I continue to deal with a severe case of stencilitus...I'll take a break to share what George sent me this morning.

If you have gotten nothing more from this B-47 project than to understand scale modeling is the result of your utilizing
available resources then this thread has successfully communicated its message.

Below is an example of resource management. Be aware it is said this is a visual record of many many contributors to a
replica of the new YAK-130, not an effort of a single individual. Success is achieved through utilization of resources... ;^)


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Old 11-11-2011, 03:12 PM
  #127  
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Default Resources Cont.

Originally Posted by Flite-Metal View Post
Anyone care to say what this is...

George its not these...


Though it would appear to be a close relative, relatively speaking.... My imagination goes wild considering
what all the DYI'ers are thinking right now...



Hummmmmmmmmmmm.................................... ............. Watts dissssss???



3 moves in the right direction(s)... X, Y, & Z ...


This resource is being presented from a minimum acceptable level in order to explain and illustrate why there is $
differential within this technology.






(1). What does it take to utilize this technology?
  • PC
  • Mac
  • 3D CAD Editor (examples)
    SketchUp (free)
    Aspire
    Solid Works
    Rhino
  • Includes .stl Print Software


Simply place the .stl image into the above print field (box) to produce part(s)...
Yes multiple objects can be rendered...printed at the same time.



(2). Is it worth the price?
  • $2,995.00 (Printer, print software, start-up kit)
  • Consumables
    Spooled ABS 1.7mm filement
    Print Base coating
(3). Can a group go together to syndicate a purchase?
  • What do you think?
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Old 11-11-2011, 05:04 PM
  #128  
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Default Resource: TPE

3D Printing - An Overview

3D printing is a form of additive manufacturing technology where a three dimensional object is created by laying down successive
layers of material. 3D printers are generally faster, more affordable & easier to use than other additive manufacturing technologies.
3D printers offer product developers the ability to print parts and assemblies made of several materials with different mechanical &
physical properties in a single build process. Advanced 3D printing technologies yield models that closely emulate the look, feel and
functionality of product prototypes.

A 3D printer works by taking a 3D computer file, typically a .stl and using and making a series of cross-sectional slices. Each slice is
then printed one on top of the other to create the 3D object.

Since 2003 there has been large growth in the sale of 3D printers. Additionally, the cost of 3D printers has declined. The technology
also finds use in the jewellery, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace,
dental and medical industries.

Thermal Plastic Extrusion Technology [TPE]:

Fused deposition modeling (FDM) is an additive manufacturing technology commonly used for modeling, prototyping, and production
applications. The technology was developed by S. Scott Crump in the late 1980s and was commercialized in 1990. FDM begins with a
software process, developed by Stratasys, which processes an STL file (stereolithography file) in minutes, mathematically slicing and
orienting the model for the build process.

*If required, support structures are automatically generated. The machine dispenses two materials one for the model and one for a
disposable support structure. The thermoplastics are liquefied and deposited by an extrusion head, which follows a tool-path defined
by the CAD file.

Materials are deposited in layers as fine as 0.005-inch thick, and the part is built from the bottom up one layer at a time. FDM works
by the "additive" principle, laying down material in layers. Plastic filament or metal wire is unwound from a coil and supplies material
to an extrusion nozzle which can turn flow on and off. The nozzle is heated to melt the material and can be moved in both horizontal
and vertical directions by a numerically controlled mechanism, directly controlled by a computer-aided manufacturing (CAM) software
package.

The model or part is produced by extruding small beads of thermoplastic material to form layers as the material hardens immediately
after extrusion from the nozzle. Stepper motors or servo motors are typically employed to move the extrusion head. Several materials
are available with different trade-offs between strength and temperature properties. As well as acrylonitrile butadiene styrene (ABS)
polymer, polycarbonates, polycaprolactone, polyphenylsulfones and waxes.

A "water-soluble" material can be used for making temporary supports while manufacturing, this soluble support material is quickly
dissolved with specialized mechanical agitation equipment utilizing a precisely heated sodium hydroxide solution in some processes
of producing parts.

The term fused deposition modeling and its abbreviation to FDM are trademarked by Stratasys Inc. An equivalent term, fused filament
fabrication (FFF), was coined by the members of the RepRap project to give a phrase that would be legally unconstrained. FDM, as the
prominent form of rapid prototyping, is used for prototyping and rapid manufacturing. Rapid prototyping facilitates testing, short runs,
rapid manufacturing and can be an inexpensive alternative to CNC machining and traditional molding processes.

[1]. FDM uses the thermoplastics ABS, ABSi, polyphenylsulfone (PPSF), polycarbonate (PC), and Ultem 9085, among others. Materials
are used for their heat resistance properties. Ultem 9085 also exhibits fire retardancy making it suitable for aerospace~ aviation apps.
This information is presented for educational purposes. Data was extracted from the http://www.x-object.com web site.

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Old 11-17-2011, 05:55 PM
  #129  
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Default UP3D Extrusion Printer



OK, so its an extrusion printer. What can it do for me...you ask?

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Old 11-20-2011, 10:22 PM
  #130  
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Default When I Was 7....

Oh to be 7 years old again...sitting on my front doorstep watching these practice bomb industry in my hometown.



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Old 11-24-2011, 04:24 PM
  #131  
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Default Flite-Metal Covered Up3D ABS Printed Parts...

I will let you decide what you want to see relative to how an Up3D printer can provide a realistic return on your investment
(ROI) as a major tool in your workshop. 9,935



A: If you believe this would be beneficial to your hobby...vote yes you want to see more.

B: If you do not believe it would be beneficial...vote no and I won't bore you with what you consider meaningless detail.

Abstaining by not voting is a no vote.

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Old 12-10-2011, 04:16 PM
  #132  
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Default

We acquired the Russian B-47 softbound publication. There were two additional
drawings which proved to be useful. Additional cross sections were found which
serve to fill additional positions along the datum lines.



These will be integrated into our master cross section index for use with CAD.

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Old 12-15-2011, 04:22 PM
  #133  
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Default B-47 = Sum Of The Parts

Thought it important to revisit this as we have probably over run some newer project lurkers.

Perhaps this will make some sense to those who have not followed from "In The Beginning".



http://www.vectric.org/video/aspire3/overview/X10-2%20Rail%20Sweep%20Overview_media/X10-2%20Rail%20Sweep%20Overview-web.html

After viewing the Apsire tutorial last 20% this should pretty well explain where many of the .STL files will come from.
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Old 12-18-2011, 08:22 PM
  #134  
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Default YooooooooHoooooooo

Have A Very Merry Christmas & Happy Holiday Season where ever you may be this December.

http://www.scaleaero.com/HolidayGreeting11.htm

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Old 12-31-2011, 03:12 PM
  #135  
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Default It Has Arrived & Coming Alive Before The Stroke Of Midnight ;^)


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Old 12-31-2011, 11:12 PM
  #136  
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Been wondering how the project was coming along Ed.
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Old 01-01-2012, 12:57 AM
  #137  
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Default Still tuned in

Happy New Year Ed. Still watching and waiting for this one to grace the skies. All the best, cheers
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Old 01-01-2012, 01:17 AM
  #138  
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It will be a little slow except for snap shots of what we are working on at this time:

Redraw wing spar layout to accommodate final fowler flap mechanics.

Create final flap mechanism

Integrate newly found cross sections into additional formers

Creating Up3D print files (.stl) for fifty+ items.

Complete stencil image files.

Etc....you know, tie this all together.

Receiving, learning Aspire, testing files from above.

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Old 01-25-2012, 06:04 PM
  #139  
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Just a note to say everything is moving along as planned with no snags. Our Dow Surfboard Foam distributor in Burbank
has plenty for our multiple fuselage sections and to be milled components.

There was a rumor by a CST employee that Dow was not going to produce Spyder aka Surfboard Foam any longer. My
distributor in Burbank assures me this is "not" the case. When I have our Dow Surfboard Foam shipped I will provide the
details here for those replicating this project.

Dow extrudes its XPS polystyrene at its La Porte, TX unit on Houston's East side. The stranded Styrene Surfboard Foam
is said to be produced in Michigan. I have not exhausted my investigation to see if it is in fact extruded in La Porte.

For Dow to duplicate its process elsewhere does not make sense, though the vertical stranding may be the reason it is not
produced at their high volume facility in Houston.

Back at it...

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Old 02-04-2012, 02:57 AM
  #140  
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Just a quick note to say after a lengthy investigation within Dow, I am pleased to report Dow is continuing to produce its
SurfBoard Foam, with a single distributor in Burbank, CA. So, there is no immediate threat of loosing access to this very
important Styrene scratch building tool.

More when I post the final dims audit...very close to finishing. Realworld issues keep interrupting progress, all good... :^)

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Old 02-08-2012, 02:54 PM
  #141  
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Default Small Window Of Opportunity

While I am not wanting to be seen as a sales agent for the North American distributor of the UP3D ABS
3D printer, I want to share the wealth with those who envision the value of adding a 3D printer to your
scale modeling toolbox...and only held back from doing this by about $1000 USD.

Note: v.1.0 and v.1.1 revs, aka versions of this printer are being offered in this sale.

To ORDER please go to the UP! USA Store @ www.up3Dusa.com.

CLICK the golden padlock and enter promo code FCS10188
February Clearance Sale Hours 9:00am - 2:30pm, M-F while quanities last.
2012 x object Inc. | |The UP! USA Store | www.up3Dusa.com | 232 Third St. E105 | Brooklyn | NY | USA | 11215


You can also forward to a friend.

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Old 02-09-2012, 06:17 PM
  #142  
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Default A 12th B-47 From 1954...

Richard Reynolds of Norfolk VA was scratch building at the age of 12... Here are some
photos of his 1/12th framed up B-47.




While I was sitting on my doorstep watching them practice bomb my hometown he was
scratch building one. Hope he will post more details...with more and larger photos.
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Old 02-18-2012, 05:57 AM
  #143  
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Flite-Metal, Your research on the B-47 is impressive, cant wait to see the finished model.
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Old 02-18-2012, 06:24 AM
  #144  
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Just got finished watching a nice little thing on History channel that showed a fair amount of B-47 footage, including landing, take off, and approaching the boom of a KB-50 for a drink. Seems in 1958, because of a radar malfunction, an F-86 from Charleston AFB tried to occupy the same airspace as a B-47. The Sabre went right down, but the pilot ejected safely, and the only landing spot for the B-47 was an Army base outside Savanna, Georgia. The pilot flew a descending arc out over the Atlantic, but since the runway was being reconditioned, the pilot decided he didn't want a 7900 pound MK-15 mod 0 breaking loose on landing, so he dumped it into the Atlantic on the approach. Landed with a big chunk missing from the starboard wing, and #6 dead and flopping in the breeze. Nobody hurt. SAC pilots are good.
There's still people looking for it now, 50 or more years later. Still has the Uranium secondary, but the Plutonium core was not loaded.
They pointed out that something like 8 or 9 pills have been lost from the planes, but because of the safety precautions, (the Plutonium not inserted until an actual attack ordered) only one, in Palmyra, blew the high explosive charge.
I always thought the B-47 was a good looking bird, even the RB-47D that I never saw when I was in the AF, with the ECM blister under the belly. Very impressive, very attention getting - - especially when driving down the taxiway, approaching the "Empty" alert pad, and watching the 20 mm tail stinger start tracking you.
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Old 02-18-2012, 04:09 PM
  #145  
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Default Final Documentation Is Over 8 Gig ;^)

Originally Posted by Germanscott View Post
Flite-Metal, Your research on the B-47 is impressive, cant wait to see the finished model.
GermanScott (Is this a misplaced Highlander? ;^)

Thank you for the compliment. Back when I started I found little documentation available. What you see out there today is
the result of a dust bowl created while searching. Internet search "spiders" tend to explode over time leaving more than they
initially find on a subject rarely looked for. Its like a partical of light, it keeps on a keeping on.

Thursday I mailed a thumb drive to Mr. Reynolds containing nearly 8 Gig of B-47 documentation on it. This 8 gig is "after" it
was qualified as usable. It was further refined to what I am actually using.

This week there has been renewed dialog on the Yahoo Group comprised of WB-47 pilots and crews. No, not all were used to
provide weather forecasting...data.

The Big "C" visits these folks in what appears to be a more frequent visitation than other B-47 drivers and riders. Sampling as
it turns out these many years later...was the most hazardous mission any B-47 crew could participate in. Not only were they
"shot at", they glowed in the dark parked on the tarmac.

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Old 02-27-2012, 12:21 AM
  #146  
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Default Final Dims & Important Documentation Focus

Over the next ten to fourteen days I will be posting many illustrations and final measurements. It is important to focus on
the documentation "contradictions" I have discovered over the last two years.

Why do this?

Anyone utilizing this thread as resource for your B-47 build will discover contradictions as you work through illustrations
in publications and online in other web sites. Instead of simply telling you about these contraditions, it is important that
I provide you the official Boeing or USAF document delineating each issue.

To many, getting these things kinda sorta correct is considered close enough, however for scale builders, who want to
build correctly, you need not get caught up in these issues and unaware of them because of someone's lack of research
when they wrote their books or drew their drawings.

I will title each contradiction individually to make it easy to identify.

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Old 02-27-2012, 12:51 AM
  #147  
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Default Wing Tip & Aileron Differentials

Below is the actual USAF pilot and crew manual description of wing tip and aileron configurations. These are identifiable
by BuNo's and upgrade dates of B's to multiple revisions of E's. As you review E variables (per manufacturer) this can be
confusing


You may read this and not think it is of any real value to know this. What would you say if this documents an error in the
1/72nd Hasgawa B-47E 52-0154. If that aileron shape is utilized as resource it has the outboard aileron leading and trailing
edge parallel to each other all the way to the wing tip, not showing the differing wing cuff shape above it just before the
tip.



Wing tip cap showing cuff and the two section aileron:




Below is the cuffed wing tip.


Below is the second style of B-47 wing tip.

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Old 02-27-2012, 06:09 AM
  #148  
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Default Getting Closer

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Old 02-27-2012, 09:28 PM
  #149  
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Default 1:8.7669 Final Dims

The formula appearing in the blue area below is what was used to determine proper size of each element of the drawing.
It is relative to the use of a graphics editor measuring a drawing in pixels.

The measurements below are the results of a final audit of construction drawings. All drawings are available on the thumb
drive we offer to anyone interested in acquiring one for their construction of this B-47E.

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Old 02-29-2012, 04:39 PM
  #150  
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Default

Recovery is good... ;^)

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Quick Reply: B-47 9th Scale, Boeing Stratojet...In The Middle


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