----- Original Message -----
Sent: Tuesday, April 12, 2016 1:00
Subject: [STMFC] A large tank as a heavy
flat car load
It was a very
fascinating load to me and so I hoped to find solutions for all needed things
and techniques for modeling, load including car.
Some time ago I found this picture of a really
impressive and heavy load! See - Variable Density Tunnel - Wikipedia, the free
Ok, I found all what I thought to need for a realization - building a
boiler, rivet plates and a fitting flatcar.
I made a scale drawing on base
of 33" wheel diameter and so I received a few basic dates - plus/minus a few
small deviations. The flat car should have a length of 36' and the pressure
tank has 15 ft in diameter, the length of it is a bit shorter then the car -
Additionally I searched in web for more information. That was a great help
to find more details and many pictures after I found the use and correct name
of this pressure tank - Variable Density Tunnel of NASA for development of air
planes and parts, especially wing forms under different pressure conditions,
especially in vacuum.
The tunnel was built in 1921/22 and delivered to
NACA, now NASA Langley Research Center in Virginia and so it was normally,
that this pressure tank has a riveted construction. Today the tunnel is
exhibited in Park of NASA Langley Research Center as a ''National Historic
Landmark'' of Virginia.
Please look my new album here for some more pictures or
visit a gallery with a complete history of this project in pictures on my
website including many more pictures of
Sorry for my not so good English however I hope for understanding and your
(Some more pictures will be added to the album here today.)