[RSchorr]

The calculation of drag first requires the computation of Reynolds number. With my initial assumption of 30 degree angle the Initial velocity needed to travel 30 ft to the high goal is about 253 inches/second. This makes the Reynolds number of 2.60E06. My fluid mechanics book is a bit dated (1977) but this would result in a drag coefficient of 0.4 to 0.42.

Using the density of air at 70F of 0.00238 slug/cubic ft and the 24"diameter

Fd = Cd*Rho*V^2/2 *(projectedArea) the initial drag force is 0.65 lbs.

As speed decrease the drag force falls, but this seems to show that drag forces will not be "insignificant".

Can someone confirm please?