Skylab N2 Bottle Question

I’ve recently been to visit both the Smithsonian museums in Washington DC and KSC in Florida, no doubt giving grist for this mill for months.  Here’s the first, although it’s only a little one.

Throughout Apollo research was done to make use of what was learned in the program and put some of the hardware to use afterward.  Initially, no doubt, this started with dreams of going beyond landing on the Moon, but eventually, as budgets got smaller the Apollo Applications Program was left with Skylab and the Apollo-Soyuz Test Project.

Skylab was beautiful.  It was a kitted out SIVB stage of a Saturn V which was converted to lab and living space, and was huge.  Launched in May 1973 it was crewed three times, the last of which left in February 1974.  The plan was to use the upcoming Space Shuttle to boost it’s orbit, but a combination of denser than usual outer atmosphere (due to solar activity) and delays to the Shuttle meant that Skylab reentered the atmosphere and largely burnt up in July 1979.

A second Skylab was built, ready to fly, but was never sent into orbit.  It now suffers the indignity of having large holes cut in the sides so that tourists like me can wander through and stands in the Smithsonian Air and Space Museum on the Mall in Washington DC.

09 07 27 Smithsonian Skylab II N2 bottle detail

So here’s the question.  A number of bottles of nitrogen were attached to the base of the SIVB for use in Skylab.  The N2 is fed to systems in the piping shown.  But why is the piping this elaborate spiral?  It is certainly elegant, but in the mass-conscious business of rocketry surely a shorter, lighter pipe would have been desirable.  Perhaps the spiral coped better with vibration at launch?  Possibly the internal diameter of the pipe changes at a particular rate?  Maybe there are thermal advantages?  I don’t know.  But I’m geeky enough to want to know.  Anyone?

Advertisements

Tags: , , ,

2 Responses to “Skylab N2 Bottle Question”

  1. Norm Says:

    The spiral piping is an old practice, going all the way back to the early years of steam power. Any machine is going to be subject to occasional vibration. A straight tube is apt to crack or become unfastened. The spiral acts as a kind of shock absorbing spring, thus helping to avoid this. Even the air compressor in my shop is rigged this way.

    Norm

  2. Melatonin Side Effects Information · Says:

    the air compressors that we use at home are the high powered ones, we also use it for cleaning .`’

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s


%d bloggers like this: