Flow velocity at exit of a jetski

[geg1633]

Hello,
I'm trying to determine the flow velocity at the exit of an axial flow jet pump used in jetskis. The jet skis have a thrust of 900 lbs, and 80 mm exit diameter, 160 HP. Flow at the exit has a pressure of approx 120-130 psi.

I first evaluated the velocity by computing the head associated with the pressure, but then I was wondering if i could also use the thrust to compute velocity. Flow rate is a function of velocity and area, so if Thrust is a function of flow rate, I would be able to determine velocity, right? So what is the relationship between thrust and velocity?

Thanks!
Greg

 

[btrueblood]

Thrust = (mdot*V)

mdot = mass flow rate (e.g. kg/sec)
V = exit flow velocity (e.g. m/sec)

Thrust in SI units comes out in Newtons.