[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [PSUBS-MAILIST] Navigation

They will not "cancel out" any more than a blower system would. You're just circulating air against a local pressure drop caused by the impeller in the directional gyroscope's wheel. Net pressure change in the circuit is zero. 

Marc

On 2/13/2011 4:50 AM, jimtoddpsub@aol.com wrote:

Emile, the electric DG's tend to be more stable and accurate (newer
technology), but if the intake and exhaust on a vacuum system are both
in the pressure hull, they should cancel out. Still I would only go with
the electric
JT

Sent on the Sprint® Now Network from my BlackBerry®

------------------------------------------------------------------------
*From: * "Emile van Essen" <emile@airesearch.nl>
*Sender: * owner-personal_submersibles@psubs.org
*Date: *Sat, 12 Feb 2011 21:15:14 +0100
*To: *<personal_submersibles@psubs.org>
*ReplyTo: * personal_submersibles@psubs.org
*Subject: *RE: [PSUBS-MAILIST] Navigation

Check if you buy one from ebay or so that it is a electric one.

The air operated are useless . (overpressure, air consumption)

Emile

------------------------------------------------------------------------

*Van:*owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] *Namens *jimtoddpsub@aol.com
*Verzonden:* zaterdag 12 februari 2011 19:58
*Aan:* personal_submersibles@psubs.org
*Onderwerp:* Re: [PSUBS-MAILIST] Navigation

Dean,

I'm hoping something practical and accurate is available in an inertial
navigation system. What makes that particularly attractive is that it is
self-contained and doesn't depend on any external signal. They were in
use on the F-4's over 40 years ago.

Jim T

Sent on the Sprint® Now Network from my BlackBerry®

------------------------------------------------------------------------

*From: *Recon1st@aol.com

*Sender: *owner-personal_submersibles@psubs.org

*Date: *Sat, 12 Feb 2011 13:43:46 EST

*To: *<personal_submersibles@psubs.org>

*ReplyTo: *personal_submersibles@psubs.org

*Subject: *Re: [PSUBS-MAILIST] Navigation

Jim I think navigation would be a good topic for this

group to discuss. I for one am at a loss for a solution.

I so like my gps system on my surface support boat I want

something decent under water.

How does the military do it? Lots of money I am sure

but seems something better than a compass could be

done.

I am leaning towards a tracking beacon on the sub and

get nav directions from support boat.

Dean

In a message dated 2/12/2011 11:42:17 A.M. Central Standard Time,
kocpnt@tds.net writes:

    Hi All,

    I am beginning rebuilding Bionic Guppies electronics/electrical
    systems. I am planning on again using an aircraft directional gyro
    for navigation.

    Before I go down this road does anyone have a better/different idea?

    Also, Dan Lance, I believe that you were quite pleased with OTS
    communication system.

    Can you confirm this, and if so provide contact info for a good
    supplier.

    Best Regards,

    Jim K

------------------------------------------------------------------------

Geen virus gevonden in dit bericht.
Gecontroleerd door AVG - www.avg.com <http://www.avg.com>
Versie: 10.0.1204 / Virusdatabase: 1435/3439 - datum van uitgifte: 02/12/11





************************************************************************
************************************************************************
************************************************************************
The personal submersibles mailing list complies with the US Federal
CAN-SPAM Act of 2003.  Your email address appears in our database
because either you, or someone you know, requested you receive messages
from our organization.

If you want to be removed from this mailing list simply click on the
link below or send a blank email message to:
	removeme-personal_submersibles@psubs.org

Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of
our server receiving your request.

PSUBS.ORG
PO Box 53
Weare, NH  03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************