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DSK August 30th 04 01:10 PM

And you're saying that the power curve of a boat "at or near hull speed"
does not have an asymptote?



Meindert Sprang wrote:
No.


I mean JAXAsshby. Sorry, I was trying to goad him into one of his
classic explanations of hull speed, which are always good for comic relief.

... As I have always learned it and according to the mathematic literature,
an asymptote will NEVER reach or cross it's associated curve.


My understanding is that it might intersect (usually doesn't) but will
never cross.

... So if the
power curve of a boat would be an asymptote, the boat would never be able to
reach hull speed, which is not true. If you apply enough power, the speed
WILL get higher than hull speed.


Sure. "Hull Speed" is not a hard limit. But in some cases the boat will
sink under her stern wave, in other cases you're looking at trying to
apply tens of thousands of KW to gain a knot.

Fresh Breezes- Doug King


Meindert Sprang August 30th 04 01:18 PM

"JAXAshby" wrote in message
...
oh, Meindert. You spoil all the fun. Just when I was beginning to toy

with
dougies -- what him telling one and all what a genius he is -- you come

along
and point out the high school math involved. damn! maybe next time.


Oops, sorry :-))

have fun Meindert.


I will!

Meindert



DSK August 30th 04 01:25 PM

JAXAshby wrote:
dougies, what word didn't you understand? I mean in addition to asymptote?


I understand every word, Jaxxie. What I don't understand is why you
contradict yourself. Does the power/speed curve for boats have an
asymptote or doesn't it?





More power = more speed.

This has an asymptotical limit, though.


JAXAshby wrote:

you don't know squat about the shape of the power curve of a boat at or
anywhere near hull speed.


JAXAshby wrote:
as·ymp·tote ( P ) Pronunciation Key (sm-tt, -mp-)
n.
A line whose distance to a given curve tends to zero. An asymptote may or


may

not intersect its associated curve


And you're saying that the power curve of a boat "at or near hull speed"
does not have an asymptote?

DSK












Rodney Myrvaagnes August 30th 04 11:00 PM

On Mon, 30 Aug 2004 07:33:32 -0400, DSK wrote:

More power = more speed.

This has an asymptotical limit, though.


JAXAshby wrote:
you don't know squat about the shape of the power curve of a boat at or
anywhere near hull speed.


JAXAshby wrote:
as·ymp·tote ( P ) Pronunciation Key (sm-tt, -mp-)
n.
A line whose distance to a given curve tends to zero. An asymptote may or may
not intersect its associated curve


And you're saying that the power curve of a boat "at or near hull speed"
does not have an asymptote?

I am puzzled. What quantity approaches an asymptote and against what
independent variable?


Rodney Myrvaagnes NYC


We have achieved faith-based science,
faith-based economics, faith-based law
enforcement, and faith-based missile
defense.
What's next? Faith-based air traffic control?

Brian Whatcott August 30th 04 11:48 PM

On Mon, 30 Aug 2004 18:00:32 -0400, Rodney Myrvaagnes
wrote:

On Mon, 30 Aug 2004 07:33:32 -0400, DSK wrote:

More power = more speed.

This has an asymptotical limit, though.

//
I am puzzled. What quantity approaches an asymptote and against what
independent variable?


Rodney Myrvaagnes NYC



Comments from the lunatic fringe aside: if one plots power versus
water speed for any water borne hull there is an upper limit to speed
no matter HOW much power is applied to the hull.

(motive power is ultimately limited by flotation. Speed is ultimately
limited by propeller immersion or hull stability)

Brian Whatcott

Garuda August 31st 04 01:37 AM

Any Naval Architect would agree to your statement.




JAXAshby August 31st 04 03:08 AM

for the krying out loud kriste sakes, dougies.

NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOO
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOO
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOO
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOO
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOO
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOO
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOO
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOO
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOO
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOO
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOO
OOOOOOOOO!

dougies, what word didn't you understand? I mean in addition to asymptote?


I understand every word, Jaxxie. What I don't understand is why you
contradict yourself. Does the power/speed curve for boats have an
asymptote or doesn't it?





More power = more speed.

This has an asymptotical limit, though.

JAXAshby wrote:

you don't know squat about the shape of the power curve of a boat at or
anywhere near hull speed.

JAXAshby wrote:
as·ymp·tote ( P ) Pronunciation Key (sm-tt, -mp-)
n.
A line whose distance to a given curve tends to zero. An asymptote may or

may

not intersect its associated curve

And you're saying that the power curve of a boat "at or near hull speed"
does not have an asymptote?

DSK




















JAXAshby August 31st 04 03:11 AM

in other cases you're looking at trying to
apply tens of thousands of KW to gain a knot.

Fresh Breezes- Doug King


no. or least "no" until maybe 10,000,000x "hull speed"

dougies, stay out of conversations that are beyond gune's capabilities, for you
and gune are twins separated at birth.

JAXAshby August 31st 04 03:12 AM

Rod, it doens't. dougies was just spouting again, waaaaaaaaaaaaaaaaaaaaaaaaay
outside his knowledge base.

On Mon, 30 Aug 2004 07:33:32 -0400, DSK wrote:

More power = more speed.

This has an asymptotical limit, though.


JAXAshby wrote:
you don't know squat about the shape of the power curve of a boat at or
anywhere near hull speed.


JAXAshby wrote:
as·ymp·tote ( P ) Pronunciation Key (sm-tt, -mp-)
n.
A line whose distance to a given curve tends to zero. An asymptote may or

may
not intersect its associated curve


And you're saying that the power curve of a boat "at or near hull speed"
does not have an asymptote?

I am puzzled. What quantity approaches an asymptote and against what
independent variable?


Rodney Myrvaagnes NYC


We have achieved faith-based science,
faith-based economics, faith-based law
enforcement, and faith-based missile
defense.
What's next? Faith-based air traffic control?









JAXAshby August 31st 04 03:13 AM

brian, please stay quiet. That way no one will realize you learned everything
there is to know about science from a year's subscription to Popular Mechanix.

From: Brian Whatcott
Date: 8/30/2004 6:48 PM Eastern Daylight Time
Message-id:

On Mon, 30 Aug 2004 18:00:32 -0400, Rodney Myrvaagnes
wrote:

On Mon, 30 Aug 2004 07:33:32 -0400, DSK wrote:

More power = more speed.

This has an asymptotical limit, though.

//
I am puzzled. What quantity approaches an asymptote and against what
independent variable?


Rodney Myrvaagnes NYC



Comments from the lunatic fringe aside: if one plots power versus
water speed for any water borne hull there is an upper limit to speed
no matter HOW much power is applied to the hull.

(motive power is ultimately limited by flotation. Speed is ultimately
limited by propeller immersion or hull stability)

Brian Whatcott










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