Cat Length question
11-17-2006, 05:14 PM
#31
Re: Cat Length question
Originally Posted by CigDaze
I don't know where the 2.5" is coming from, whether it's the tips of the sponsons or the transom which would affect the tunnel and airfoil, but either way we're talking about a difference of 0.5%. Say it is in the tunnel area, lift and drag behave linearly with surface area as defined by L (or D)=1/2 * rho * V^2 * S * Cl (or Cd), where rho=density, V=velocity in fps, S=planer area in sqft, and Cl=coefficient of lift (or drag). Again, 0.5% differences...maybe.
After running a quick CFD comparison, I see no appreciable difference.
After running a quick CFD comparison, I see no appreciable difference.
11-17-2006, 05:23 PM
#32
Platinum Member
Platinum Member
Re: Cat Length question
Originally Posted by 3600cat
What does all this have to do with a treadmill????
If boat A is 2.5" shorter than boat B and they're traveling in exactly opposite directions on a head-on collision course while on a section of the Mississippi River with a 10 mph current and both of their GPS's indicate 100 mph, what is their closing speed with regards to one another? What would each water pitot speedometer read. assuming they're accurate?
11-17-2006, 09:03 PM
#33
OSO Content Provider
Commercial Member
Re: Cat Length question
Originally Posted by Steve Miklos
Closing speed 200 MPH
Speedo 1 =90
speed0 2 =110
Do I win?
Speedo 1 =90
speed0 2 =110
Do I win?
Charter Member
