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Re: [PSUBS-MAILIST] HP vs Speed

To: <personal_submersibles@psubs.org>
Subject: Re: [PSUBS-MAILIST] HP vs Speed
From: "Brian Cox" <ojaibees@ojai.net>
Date: Sun, 31 Oct 2004 11:57:22 -0800
References: <000c01c4be18$767db960$67d44940@pc> <20041029.215330.6798.0.tlohm@juno.com> <000a01c4beb6$bb2620e0$11a6ab42@farmer> <000601c4bedb$8b03e4e0$11a6ab42@farmer> <000801c4bf52$2969f590$918ca844@FAMILYROOM> <002c01c4bf80$78894e40$11a6ab42@farmer>
Reply-to: personal_submersibles@psubs.org
Sender: owner-personal_submersibles@psubs.org

Is the formula based on the density of seawater?

Brian
----- Original Message ----- 
From: "Adam Lawrence" <adteleka@vzavenue.net>
To: <personal_submersibles@psubs.org>
Sent: Sunday, October 31, 2004 11:33 AM
Subject: Re: [PSUBS-MAILIST] HP vs Speed


> I came up with 5.1 hp for your sub.
> The equation is not linear, velocity is ^3.
> There is a drag coeficient too, I didn't calculate it, just used an 
> approximation based on geometry.
> 
> Adam
> 
> ----- Original Message ----- 
> From: "Dan H." <jmachine@adelphia.net>
> To: <personal_submersibles@psubs.org>
> Sent: Sunday, October 31, 2004 8:01 AM
> Subject: Re: [PSUBS-MAILIST] HP vs Speed
> 
> 
> > That seems a bit more HP then needed.  I'm no authority, but I'd guess my
> > K-350 does about five knots.  It's 36 inches in diameter and has a total 
> > of
> > 4.5 HP.  I know the three extra knots ramp the HP needed up quite a bit 
> > but
> > that still seems like a lot.  I'm diving today and am going to try to get 
> > a
> > better handle on my top speed.
> >
> > Dan H.
> >
> > ----- Original Message ----- 
> > From: "Adam Lawrence" <adteleka@vzavenue.net>
> > To: <personal_submersibles@psubs.org>
> > Sent: Saturday, October 30, 2004 6:52 PM
> > Subject: Re: [PSUBS-MAILIST] HP vs Speed
> >
> >
> >> I came up with around 30 horses. Thats with a 42 in clylinder in
> > saltwater.
> >>
> >> Anyone going to discuss this?
> >>
> >> Adam
> >>
> >>
> >> ----- Original Message ----- 
> >> From: "Adam Lawrence" <adteleka@vzavenue.net>
> >> To: <personal_submersibles@psubs.org>
> >> Sent: Saturday, October 30, 2004 2:29 PM
> >> Subject: Re: [PSUBS-MAILIST] HP vs Speed
> >>
> >>
> >> > How much horsepower did you guys come up with? And what variables did
> > you
> >> > use?
> >> >
> >> > Adam
> >> >
> >> >
> >> > ----- Original Message ----- 
> >> > From: "Michael B Holt" <tlohm@juno.com>
> >> > To: <personal_submersibles@psubs.org>
> >> > Sent: Friday, October 29, 2004 8:53 PM
> >> > Subject: Re: [PSUBS-MAILIST] HP vs Speed
> >> >
> >> >
> >> >> On Fri, 29 Oct 2004 17:36:13 -0700 "Brian Cox" <ojaibees@ojai.net>
> >> >> writes:
> >> >>>
> >> >>>               Does anyone have a formula for the amount of
> >> >>>horsepower( or other unit of energy) required to push a cylindrical
> >> >>>body of given diameter through the water at 8 knots? Assuming neutral
> >> >>>buoyancy .
> >> >>
> >> >> I got it.
> >> >>
> >> >> Send me a note at mholt@ohiohills.com
> >> >>
> >> >>
> >> >> Mike
> >> >>
> >> >>
> >> >> ________________________________________________________________
> >> >> Speed up your surfing with Juno SpeedBand.
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> >> >>
> >> >>
> >> >>
> >> >>
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> 
> 
> 
> 
> 
> ************************************************************************
> ************************************************************************
> ************************************************************************
> The personal submersibles mailing list complies with the US Federal
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> Removal of your email address from this mailing list occurs by an
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> mailto:removeme-personal_submersibles@psubs.org
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> PSUBS.ORG
> PO Box 311
> Weare, NH  03281
> 603-529-1100
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> 





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Removal of your email address from this mailing list occurs by an
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References:
- [PSUBS-MAILIST] HP vs Speed
  - From: "Brian Cox" <ojaibees@ojai.net>
- Re: [PSUBS-MAILIST] HP vs Speed
  - From: Michael B Holt <tlohm@juno.com>
- Re: [PSUBS-MAILIST] HP vs Speed
  - From: "Adam Lawrence" <adteleka@vzavenue.net>
- Re: [PSUBS-MAILIST] HP vs Speed
  - From: "Adam Lawrence" <adteleka@vzavenue.net>
- Re: [PSUBS-MAILIST] HP vs Speed
  - From: "Dan H." <jmachine@adelphia.net>
- Re: [PSUBS-MAILIST] HP vs Speed
  - From: "Adam Lawrence" <adteleka@vzavenue.net>

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