You aren’t going to want any kind of flutes or
anything on the shaft of this thing. Expect it to get clogged real fast. Glass
smooth stainless 4130, or smoother is preferable. Polish it with newspaper, and
then polish it again with RainX. An old torpedo tube would work better as it
can probably be had in some form or another off the shelf.
Robert
Crawley
Elite Precision Fabricators, Inc.
Programming
(936) 449-6823
-----Original
Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of [EMAIL PROTECTED]
Sent: Tuesday, October 29, 2002
11:49 PM
To: [EMAIL PROTECTED]
Subject: Re: PROJECT REFOCUSING
In a
message dated 10/29/2002 7:10:07 PM Alaskan Standard Time,
[EMAIL PROTECTED] writes:
In this
design (which is just a quick concept - I think the theory
should be tested) the 'entire' skin has the heating elements. Imagine
just below the aluminum skin is a network of small heating elements
(nichrome wire). This network heats the entire surface, not just the
nose.
Yes, if you'll look back on some prior posts, say 1 week back, that's what we
were talking about... a heated nose, and a warm skin on the sides, to assist
the slipperiness.
A thin layer of water forms around the entire craft making it
slippery. Its weight coupled with the heating will allow this type of
craft to move slowly downward.
Joe, what do you think of the idea of spraying it with teflon? Would that
assist the slipperiness at all?
Since our model will not be carrying any radioactive heating elements
anytime soone, the idea was to have a single wire provide power to
augment the batteries - unless of course someone wants to calculate
exactly how much dc power it would take to melt ~ 180,000 cubic inches
of water - (pi * 6) * (500' * 12) or there abouts.
That's a job for Robt. Bradbury. Grand scale calculations are his
forte'. Robert?
Note: I did say this is a rough sketch. I can add more of the
mental
notes I have. As a matter of fact I was thinking about some pictures of
the process to make a skin of this type - I might have enough materials
to at least test the theory.
We were thinking of 2 ideas for the actual model (not of the prototype for the
model). These were:
1) having Robert Crawley's Elite Precision Machining make a stamped metal
exterior casing, perhaps with flutings or spiraled grooves to assist with water
shed, and
2) using an old torpedo tube, and simply refurbishing it. Using a
torp, there might already be prefab compartments / bays. It also might
have a battery that we can adapt.
For a prototype (IcePIC iA), I guess your concept of a cardboard tube (such as
a postal packing tube) wrapped with aluminum foil for insulation, then wrapped
with wire, then more aluminum foil, then sprayed with waterproofer, then teflon,
might do the trick.
-- John