On Tue, Jan 30, 2018 at 05:26:15PM -0500, Caleuche wrote:
> And if I may ask, and to validate my own calculations, exactly how
> did you come up with 20 kPa peak dynamic pressure? I'd like to pin
> down the reason I'm getting a different result than you.

Rearranging

 drag = dynamic pressure * coefficient * area

to give

 dynamic pressure = drag / (coefficient * area).

I used coefficient on the order of 1, area 1.5 m^2, and drag 20 kN to
get 13 kPa, then allowed about 50% margin for the harder to model
variation of forces over the sphere.

- Tim