Author Topic: Space Shuttle Launch Pad 39A with Challenger STS-6  (Read 368203 times)

Offline Davp99

  • Full Member
  • **
  • Posts: 208
  • Fall River, MA
  • Liked: 40
  • Likes Given: 154
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1260 on: 07/04/2017 01:14 PM »
A Sewer Line, like a Gutter Catch has to Run downhill, 1 inch every 10 or 12 feet. any plumbers here ?
You Only Live Twice

Online roma847

  • Full Member
  • ****
  • Posts: 1395
  • Be part of it
  • Germany
  • Liked: 301
  • Likes Given: 12
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1261 on: 07/04/2017 09:19 PM »
Hi Dave,

the gutters of all the three MLPs have no downward gradient like ordinary roof gutters, as one can see in the drawings of Reynolds, Smith & Hills, who created all drawings for the conversion of ML-3 into the first "Mobile Launcher Platform" MLP-1 in 1975, and also of MLP-2 (1976) and MLP-3 (1982).


Source: Library of Congress (MLP-3)

In this photo of MLP-3 one can follow the regular run of the gutters and see, that there is actually no gradient, but a gradient of the gutter behind the downspout up to the corner in Bay 1.


Source: Library of Congress

That's what it is, and therefore also no plumber can help.

***************
Regards from Germany

Manfred

Under construction:
1:144 Launch Pad 39A with Challenger STS-6

Online roma847

  • Full Member
  • ****
  • Posts: 1395
  • Be part of it
  • Germany
  • Liked: 301
  • Likes Given: 12
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1262 on: 07/04/2017 10:15 PM »
Hello everybody,

here quickly an image of an other test of a support on a gutter fragment.



These supports must then still be glued onto short Evergreen Strips 0.25 mm x 0.75 mm and then glued on the 17 girders below the gutter, what again will only work with CA.
Probably I will already previously glue the supports below the gutter, then paint everything together and finally glue the complete gutter.
Thus far for the moment to the theory!

***************
Regards from Germany

Manfred

Under construction:
1:144 Launch Pad 39A with Challenger STS-6

Online roma847

  • Full Member
  • ****
  • Posts: 1395
  • Be part of it
  • Germany
  • Liked: 301
  • Likes Given: 12
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1263 on: 07/07/2017 06:54 AM »
Hello everybody,
somehow I still miss the right bite for this gutters chapter, but it does not help, and therefore I have to swallow this pill ...

Therefore, I first have drawn a template for the making of the gutter parts, which is unfortunately somewhat pale,



and then I have cut a further sample strip for the Gutter-3 from a champagne cork foil, which slightly tapers to the corner, in order to get the appropriate gradient of this gutter part.

The punched opening for the downspout (8'') is located at the beginning, immediately next to the girder at the end of the Bay 17, as can be seen in this image.


Source: Library of Congress

And this stripe I then have pre-molded step-by-step on my Rolling Set,



by using core wires with decreasing diameters,





down to the last groove,



with this intermediate result.



For further molding of the gutter, I then have pressed the gutter with the core wire vigorously into a foam strip,



whereby unwanted kinks can be avoided, as can be seen. 



Between two balsa slats the rounding was then still somewhat equalized.



Since the wider strip end inevitably gets rounded a little too far using the thinnest core wire ( 1.5 mm), the gutter part has been equalized again over a rounded plastic strip (5 mm x 1.5 mm) in order to obtain an U-shaped profile. 





Here the gradient of the gutter can be seen very well already.



And here one can see the Gutter-3 in the side view with the prepared bended downspout, which is running into the downspout at the end of the Bay 16.





After this successful attempt, I can now also make the final Gutter-3 from the aluminum sheet (0.1 mm). 

The Gutter-2 will then be formed in an analogous manner, but this time immediately from an aluminum sheet strip of 99 mm 5 mm, since its height is the same over the entire length.
That's it so far, and thanks for looking. 

« Last Edit: 07/07/2017 07:13 AM by roma847 »
***************
Regards from Germany

Manfred

Under construction:
1:144 Launch Pad 39A with Challenger STS-6

Online roma847

  • Full Member
  • ****
  • Posts: 1395
  • Be part of it
  • Germany
  • Liked: 301
  • Likes Given: 12
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1264 on: 07/12/2017 10:17 PM »
Thanks Dave and Ron for looking in on me.  

***************
Regards from Germany

Manfred

Under construction:
1:144 Launch Pad 39A with Challenger STS-6

Online roma847

  • Full Member
  • ****
  • Posts: 1395
  • Be part of it
  • Germany
  • Liked: 301
  • Likes Given: 12
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1265 on: 07/13/2017 11:15 AM »
Hello everybody,

it goes on with the gutters.

The fact that the test results with the short gutter parts were quite promising doesn't have to mean anything, because whether the rounding of the longer gutters from the 0.1 mm aluminum sheet would be work well too, would still have to be shown.

At first the short Gutter 3 at the end of Side 2 (Bay 18) was cut out and its opening punched for the downspout,



and also the strips for the Gutter 2 and Gutter 1 (bottom).



The dimensions were taken from this image of the MLP-3, because it has almost no distortions and should correspond to the MLP-2.


Source: Library of Congress

The Gutter 2 starts at the end of the Bay 16 directly behind the local girder and extends to the middle of the Bay 11.



And then I actually wanted to start with the rounding of the gutters, but previously I had once again compared the distribution of the gutters and the position of the box with the Fire hose reel with the images of the MLP-2 from the collection of John Duncan and suddenly did not trust my eyes.
For as one can see on this already known image, the Gutter 2 is running up to the end of the Bay 11


Source: apollosaturn.com (John Duncan)

and must therefore be slightly longer than the already cut strip, namely 107 mm instead of 99 mm. Only good that I had compared once again. 



So a new gutter had to be cut, which was done quickly.



And now the stepwise rounding of the parts could finally get started,



initially again with the short gutter part up to the lower groove, and then with the longer part,





what could have been made even relatively well up to the rounding in the last groove, although it would be better if the Rolling Set would be slightly wider. 



Thereafter, the short piece was gradually further rounded, first on the foam strip,



and then between the balsa boards up to the core diameter of 1.5 mm.



The further rounding of the longer gutter was then somewhat more difficult because it is longer than the core wires, which has led to unsightly kinks, especially during rounding on the foam strip, which should be avoided, however, since they are difficult to remove.

That's why I've tried it on the cutting mat, but for this one needs a tight clamping in order to press with the Balsa boards from both sides, but this has not worked so well.



After that I have the gutter again somewhat widened and tried it once more with a longer plastic profile, only the plastic is of course not stiff enough,



which is why I have stopped for the moment.

But, of course, I will not abandon immediately, rather I will try it again with longer core wires, wherefore you could keep your fingers crossed, if you please! 
Maybe one of you still has a smart tip for me, which would be very helpful.   

« Last Edit: 07/13/2017 11:39 AM by roma847 »
***************
Regards from Germany

Manfred

Under construction:
1:144 Launch Pad 39A with Challenger STS-6

Online roma847

  • Full Member
  • ****
  • Posts: 1395
  • Be part of it
  • Germany
  • Liked: 301
  • Likes Given: 12
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1266 on: 07/13/2017 12:59 PM »
Hello together,

here I am again, but unfortunately with the previous low point of my gutter-rounding ...



And what does one say thereto?

I had just cut off a longer brass core wire ( 2.0 mm) and wanted to try again, to smooth the little dents, but a longitudinal kink which meanwhile had developed caused by the multiple rounding of the strip was then too much for the thin sheet, which unfortunately has broken up, caused by material fatigue ... 

And what is that teaching us? 

Unnecessary back-and-forth bending should be avoided as far as possible, and stepwise be rounded in only one direction, which I will now try again cheerfully with longer core wires and a new strip. 

***************
Regards from Germany

Manfred

Under construction:
1:144 Launch Pad 39A with Challenger STS-6

Online roma847

  • Full Member
  • ****
  • Posts: 1395
  • Be part of it
  • Germany
  • Liked: 301
  • Likes Given: 12
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1267 on: 07/13/2017 09:32 PM »
Hello friends,
since these crazy gutters are always on my mind, I am constantly pondering how I can master them ... 

And then tonight during a cool wheat beer (Cheers!!!) I hit on an idea,  that in my very first attempts to build such gutters I had used the smallest available Styrene half-pipe ( 3.0 mm), on the left in the image, which was however too big for my 1:160 scale and was quickly put aside.



But this half-pipe could at least be a suitable support for the final rounding of the gutters with the 1.5 mm core wire after the last groove in the set,



which would also be long enough for the longer gutter parts, what I will try as next.

« Last Edit: 07/13/2017 09:44 PM by roma847 »
***************
Regards from Germany

Manfred

Under construction:
1:144 Launch Pad 39A with Challenger STS-6

Offline llanitedave

  • Senior Member
  • *****
  • Posts: 2060
  • Nevada Desert
  • Liked: 1247
  • Likes Given: 1437
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1268 on: 07/13/2017 09:43 PM »
Wow, that kind of precision and detail would be commendable for the full-sized construction, much less a small model!  I think the architects and engineers could learn something from this effort!
"I've just abducted an alien -- now what?"

Online roma847

  • Full Member
  • ****
  • Posts: 1395
  • Be part of it
  • Germany
  • Liked: 301
  • Likes Given: 12
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1269 on: 07/13/2017 10:42 PM »
Thanks for your nice words,
yep, every day learning by doing ...

***************
Regards from Germany

Manfred

Under construction:
1:144 Launch Pad 39A with Challenger STS-6

Online roma847

  • Full Member
  • ****
  • Posts: 1395
  • Be part of it
  • Germany
  • Liked: 301
  • Likes Given: 12
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1270 on: 07/14/2017 10:42 PM »
Hello everybody,

here briefly to the current state of the plumber works. 

Today I have made a few longer half-pipes as a support for the first roundings of the longer gutters, by halving pipes ( 7.5 mm and 6.0 mm) with the precision saw.



And in this way the roundings can be formed much more evenly and, above all, without larger dents or even kinks.





So it looks much better than yesterday,



and is still increasable, which makes me confident. 
And as it looks so far, there could still be a happy ending with these gutters.   

***************
Regards from Germany

Manfred

Under construction:
1:144 Launch Pad 39A with Challenger STS-6

Online Ronpur50

  • Full Member
  • ****
  • Posts: 1857
  • Brandon, FL
  • Liked: 692
  • Likes Given: 1400
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1271 on: 07/15/2017 12:36 PM »
Thanks Dave and Ron for looking in on me.  



Never miss an update!!!

Online roma847

  • Full Member
  • ****
  • Posts: 1395
  • Be part of it
  • Germany
  • Liked: 301
  • Likes Given: 12
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1272 on: 07/15/2017 02:41 PM »
Thanks Ron for your unbroken interest,

you have great endurance.

« Last Edit: 07/15/2017 02:41 PM by roma847 »
***************
Regards from Germany

Manfred

Under construction:
1:144 Launch Pad 39A with Challenger STS-6

Online roma847

  • Full Member
  • ****
  • Posts: 1395
  • Be part of it
  • Germany
  • Liked: 301
  • Likes Given: 12
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1273 on: 07/17/2017 07:01 AM »
Hello together,

since I was still not satisfied with the last rounding step to the final gutter diameter of approx. 2.0 mm, I have tinkered at a better solution.

At first, I have made a few longer core wires for the longer half-pipes to get the curves evenly over the entire length.



With the last core wire of 1,5 mm I get with the 0.1 mm aluminum sheet to approx. 1.7 mm, only I had to widen the gutter again and again, since the top edges are always rounding slightly again. With my previously used rectangular strip (1.5 mm x 5 mm), however, this did not achieve uniformly enough, especially with the longer gutters.

That is why I have sanded a 2 mm balsa board on one side down to a thickness of approx. 1.7 mm and rounded the edge in order to be able to widen the last rounding accordingly and to smooth it, which I have tested then at the end of the Gutter 1.





This may work in principle for short gutters, but is not a good solution for the longer gutters, since the Balsa board is too little stable in shape over the length and can partly be pressed in. That is why I have choosen another, somewhat more complex, but more stable solution with a plastic strip. 
But since there is no commercially available wider strips with about 1.7 mm thickness, I have made it myself. 

For this purpose, I have cut a handy strip of 15 mm x 150 mm from 1.5 mm styrene and glued on both sides 5 mm wide strips of 0.1 mm Styrene, for which I used MEK, wherewith the composite strip is then approx 1.75 mm thick.



The more difficult part was then the smooth rounding of the edge, which took some time. 

But with this core strip, it can be handled very cleverly by clamping the gutter into a Balsa "vise" to smooth it, without slipping or tilting. 



And with this more sturdy plastic core, the desired half-round shape of the longer gutter should be doable reproducibly, which is very important.







And if this method now works as well with the longer gutters, which I assume, this would be great. 

« Last Edit: 07/17/2017 07:04 AM by roma847 »
***************
Regards from Germany

Manfred

Under construction:
1:144 Launch Pad 39A with Challenger STS-6

Online roma847

  • Full Member
  • ****
  • Posts: 1395
  • Be part of it
  • Germany
  • Liked: 301
  • Likes Given: 12
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1274 on: 07/18/2017 11:05 AM »
Hello everybody,

before starting with the rounding of the longer gutters according to the new method with the plastic core strip, I have tried here the lateral gutter end from a rounded rectangle strip 0.25 mm x 1.5 mm. The strip will be cut off only after gluing.



But now to the longer part of the Gutter 1, which was pre-rounded first in the largest half-pipe ( 7.5 mm) with an aluminum core ( 4.0 mm).



And this went on in several stages with diminishing diameters of the semiconductors and core wires, starting with

6,4 mm,



6,0 mm,



4,7 mm.



down to 3,0 mm.



The following rounding with the plastic core strip (1.75 mm) was then carried out on the foam strip,



and then by pressing it together in the Balsa "vise".



And then it went on with the 1.5 mm core wire on my "pin board" using my Balsa-Clamp technique, with which I have bent already the SSWS pipes.

By cleverly clamping, the core wire can be held down with the inserted gutter, while at the same time in the interspace the gutter wall can be smoothed almost perfectly by swaying the balsa board back and forth.  And by re-clamping the arrangement one can also reach the previously covered areas of the gutter for smoothing them.



The rounding could then be further smoothed on the other also rounded side of the core strip by pulling a fixed rubber over the gutter rounding.



And this is the result of all this tender loving care,





which can really be impressive and so is also taken from the Quality control of the FSC.



And since I now know the fact how it works, I can calmly dedicate myself to the other gutters.

« Last Edit: 07/18/2017 11:06 AM by roma847 »
***************
Regards from Germany

Manfred

Under construction:
1:144 Launch Pad 39A with Challenger STS-6

Offline mike robel

  • Extreme Veteran
  • Senior Member
  • *****
  • Posts: 2029
  • Merritt Island, FL
  • Liked: 136
  • Likes Given: 35
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1275 on: 07/18/2017 12:15 PM »
Manfred, were you a watch-maker by any chance?  Your meticulous attention to detail and patience far exceeds mine.  Once again, I am amazed by your ability to invent and refine your techniques and products?

I'd really be interested in seeing some of the other models you must have built, or is this your only one?

Mike

Offline DaveS

  • Shuttle program observer
  • Senior Member
  • *****
  • Posts: 7708
  • Sweden
  • Liked: 255
  • Likes Given: 12
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1276 on: 07/18/2017 03:01 PM »
Manfred, I have found something that will require you to go back a few steps. It concerns the grid structure on the north walls of the SRB exhaust holes. It isn't launch equipment. It was in fact a temporary support or bracing structure for the walls when MLP-2 was undergoing some rebuild work back in 2004. I have attached a photo from STS-135 which was MLP-2's last launch which clearly shows that the structure isn't there.
"For Sardines, space is no problem!"
-1996 Astronaut class slogan

"We're rolling in the wrong direction but for the right reasons"
-USA engineer about the rollback of Discovery prior to the STS-114 Return To Flight mission

Online roma847

  • Full Member
  • ****
  • Posts: 1395
  • Be part of it
  • Germany
  • Liked: 301
  • Likes Given: 12
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1277 on: 07/18/2017 09:53 PM »
Manfred, were you a watch-maker by any chance?  Your meticulous attention to detail and patience far exceeds mine.  Once again, I am amazed by your ability to invent and refine your techniques and products?

I'd really be interested in seeing some of the other models you must have built, or is this your only one?

Mike

Thanks Mike for your nice compliments,

but I was neither watch-maker nor Doctor of Medicine, but only Doctor of Material Science.

Since five years this STS-6 long-term project has been my One and Only ...

At that time, five years ago, I started after a very long time one more time with building some airplanes, mostly OOB, like the Boeing 747 or the Airbus A380, as you can see here in front of my reference photo of Challenger on MLP-2 in 1983.



And then the Real Space Modeling Virus had infected me and no longer has let go ...

« Last Edit: 07/18/2017 09:58 PM by roma847 »
***************
Regards from Germany

Manfred

Under construction:
1:144 Launch Pad 39A with Challenger STS-6

Offline mike robel

  • Extreme Veteran
  • Senior Member
  • *****
  • Posts: 2029
  • Merritt Island, FL
  • Liked: 136
  • Likes Given: 35
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1278 on: 07/18/2017 10:39 PM »
Manfred, just incredible stuff.

Online roma847

  • Full Member
  • ****
  • Posts: 1395
  • Be part of it
  • Germany
  • Liked: 301
  • Likes Given: 12
Re: Space Shuttle Launch Pad 39A with Challenger STS-6
« Reply #1279 on: 07/18/2017 10:59 PM »
Thanks Mike,
I hope that you now can understand my crazy attention to details a little bit better.

In those days, we examined the materials under the Scanning electron microscope, today I need only my magnifying glass.

BTW, I think the best is just good enough and so I'm often striving for the perfect solution, no matter what kind of material is needed and how long it takes, because only the result is important, and nothing is impossible.

« Last Edit: 07/21/2017 09:13 PM by roma847 »
***************
Regards from Germany

Manfred

Under construction:
1:144 Launch Pad 39A with Challenger STS-6

Tags: