Page 1 of 1

Inch of water to fps

Posted: Sun Mar 17, 2013 3:07 pm
by Flash
Formula - (inches of water^0.5)*66.2

Can some one give me the "long hand" version of this equation.

Inches of water(^)????
Do i add water to .5 or do i times... .5x.5 Can't seam to get the right answer.

Re: Inch of water to fps

Posted: Sun Mar 17, 2013 3:31 pm
by 86rocco
The carat ^ is the symbol used by most common spreadsheet programs for the exponent function so A^2 means A squared and inches of water^ 0.5 means inches of water to the exponent 0.5 which is just another way of saying the square root of the inches of water.

Re: Inch of water to fps

Posted: Sun Mar 17, 2013 3:38 pm
by Flash
can you put it in an example so my pee brain can grasp it. :oops:

Re: Inch of water to fps

Posted: Sun Mar 17, 2013 5:53 pm
by 86rocco
Sure, let's say the pitot pressure is 16 "WC, the velocity in fps is 66.2 x 16^0.5 = 66.2 x √16 = 66.2 x 4 = 264.8 fps.

BTW, have you seen my spreadsheet, haven't you?

Re: Inch of water to fps

Posted: Sun Mar 17, 2013 6:19 pm
by Flash
I lost that one when i switch computers THANK YOU.

And thanks for spelling it out for me. I get it now, and the ## work, Yeah!

thanks again for your time ;)