Hello everyone. I'm new to this forum and very impressed so far.(adsbygoogle = window.adsbygoogle || []).push({});

I'm making a program which simulates the flight of an object. In order to do that, I have to compute the coefficient of drag. This is the first problem. From what I know, it should be possible to determine this number (at least approximately) by examining a 3d model of the object.

Second: I'm looking for the function which describes how the coefficient of drag changes with the Mach and the Reynolds number (Cd[Ma,Re]).

I have seen it has been done (http://home.snafu.de/l.moeller/Ballistik/Airdrag.html), but I wasn't able to extract the formulas from the source code.

Has anyone got a suggestion to these questions? Thank you in advance.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Simulating ballistics

Can you offer guidance or do you also need help?

Draft saved
Draft deleted

**Physics Forums | Science Articles, Homework Help, Discussion**