Re: [PSUBS-MAILIST] basic hidrodynamic question

[MerlinSub@t-online.de (Carsten Standfuß)]

Hi Alec, I can not open your attachment
but the answer of the problem you will find 
in the rules of ABS for normal steel ships. 

I have here simillar rules from the Germanischer Lloyd
but it takes 3 pages of formulars and in real difficult to translate
words.. and it is in german and in metric and needs normaly 1-2 days
to calculate.

And the dive planes shafts of the old german military submarines 
from first world war brokes normaly on the surface during 
storm-weather. 

Ask Karl Fuller in New Zealand - maybe he has the rules 
in english. 

Carsten

Alec Smyth schrieb:
> 
> Hello all,
> 
> Over time I've accumulated a fair little sub-related library, but I've come
> across a VERY BASIC calculation I can't find a formula for in any of my
> books. I need to work this out as part of dimensioning the axles for my dive
> planes.
> 
> Lets say I have a perfectly flat, rectangular dive plane, with a surface
> area of 120 square inches, and I am doing 8 knots. Suddenly I incline the
> dive plane downwards by 30 degrees. What's the magnitude of the resulting
> force? I do realize the force is normal to the plane surface, and I expect
> one gets to it by calculating the pressure and then multiplying by the 120
> square inches... but that pressure is eluding me.
> 
> I wonder can anyone help?
> 
> Alec Smyth
> 
>   ------------------------------------------------------------------------
>                   Name: winmail.dat
>    winmail.dat    Type: DAT Datei (application/x-unknown-content-type-dat_auto_file)
>               Encoding: base64