[ARC5] Degaussing Field and B-18's

[J. Forster]

> I recall reading that the degaussing for ships in WWII was a pretty quick
> and dirty affair.  They ran up to a dock and slapped a wire on the hull
> and that was that.   Would doubt if the subs would use anything different.,

Well, I have here a rather poor quality pic of the DeGaussing Switchboard
on the sub Lionfish at Battleship Cove. The plaque says it sends DC
voltage through vertival and horizontal coils throughout the ship.

Hence my question- how do you adjust the thing?

> And
> I don't think that degaussing helps when it comes to avoiding MAD.  You
> are
> detecting a metal object moving in the Earth's magnetic field and not the
> magnetism in the ship.

Also, would it make a didderence to MAD whether the object was moving or
fixed? I don't think so.

> Both the US and the Germans deployed homing torpedoes based on the use of
> sound in WWII. torpedoes, but attempts to use magnetic detection for
> detonation were a disaster.

> Those aircraft did not have AC systems built in and suitable inverters
> would
> have to be added if the radar required that.

Somewhere I've got a pic of a pair of rotary inverters for an ASB-5

> Rotary inverters were pretty
> much standard aircraft equipment after the war (even the Thor missile had
> them) and the jets adopted IGDs built into the engines that produced AC
> and
> DC.  Interesting fact about the early U-2; they dispensed with the drives
> to
> save weight and ran the AC power at whatever the engine happened to
> produce
> at any given time.
>
> Anyone know how much power we are talking about for a early radar?  I do
> not
> recall reading where the RAF having to do anything  to the Blenheims they
> modded for AI radar.
>
> Wayne

Don't know about other sets, but the ASB-5 pulls about 3 to 5 amps @ 115V
800-2400 Hz.

-John

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