[Redwine]

Originally Posted by Ducimus

Noise factor = 1.0 Default setting, also on the deaf end of the scale

What doesnt make sense though is according to

http://www.mistari.com.au/shiii/shii...r_Formulas.htm

Note: If P noise <= 0 then object undetectable.

yet if we set our noise factor to 0 its like quite uber, maybe my math is wrong and im not looking at the equation correctly.

I cant understand well...... i have same problem as you here.

That formula is for our sub noise ...... or i am wrong ?
The noise factor in Hydrophones at Sim.cfg is for DDs ...... i am wong ?

Anyway..... looking at our sub.

Low and Silent Running prop turns are 130, max turns at Flank are 300.

130 is 43.33 % of 300.

Then ..... for Silent running turns :

130/ 43.33 = 3

3 - 1 = 2

Then :

P noise = Noise factor x 2

To have a P Noise equal or lower than 0 (zero) to be undetectable at silent running turns.........

We need to input a Noise Factor zero or negative..... OK, but...

Then ............ we will be undetectable at any otehr RPM even at flank turns...... :hmm:

I am wrong ?

If we input a positive Noise Factor...... we never will be undetectable, because the value will be always > 0, even at half knot turns........... :hmm:

I am wrong ? :hmm:

I cant undestand this formula......