Interesting fact
08-11-2009, 06:58 PM
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08-11-2009, 07:43 PM
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[quote=Chip;4504171]Incorrect, depending on the weather it may be that just above sea level on some days.
If the way is completely free of any impurities, then its pH doesnt vary anyway so you have essentially specificed that twice, the same is true of its specific gravity, which is 1.000 by definition
as mentioned pre
Yes thats true, its part of the noise that can give subs away IIRC
As a result they have two propellers as one unit with different prime numbers for the numbers of blades on each one to minimise constructive interference in the wave forms created by the pressure spots generated by the cavitation.
Richie or Rob can no doubt give a more accurate description than I just have though.
If the way is completely free of any impurities, then its pH doesnt vary anyway so you have essentially specificed that twice, the same is true of its specific gravity, which is 1.000 by definition
as mentioned pre
Yes thats true, its part of the noise that can give subs away IIRC
As a result they have two propellers as one unit with different prime numbers for the numbers of blades on each one to minimise constructive interference in the wave forms created by the pressure spots generated by the cavitation.
Richie or Rob can no doubt give a more accurate description than I just have though.
Last edited by Lee1; 08-11-2009 at 08:52 PM.
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