Need help finding the G1, G2, etc... drag coefficient functions

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    Bullet Drag Flight
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Discussion Overview

The discussion revolves around the search for drag coefficient functions (G1, G2, etc.) relevant to simulating a bullet's flight and calculating air resistance. Participants are exploring resources, including lookup tables and calculators, to enhance the accuracy of their simulations.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant expresses confusion about the drag coefficient functions needed for simulating a bullet in flight and seeks accurate data.
  • Another participant asks for the search terms used and requests links to relevant resources found by the original poster.
  • A different participant provides several links to resources that may contain information about drag coefficients but notes the lack of calculators or tables.
  • One participant shares a specific link related to Hornady's bullet air resistance and questions its usefulness.
  • Another participant offers a link to a calculator for ballistic data.

Areas of Agreement / Disagreement

Participants are generally aligned in their search for resources but have not reached a consensus on the availability of a comprehensive calculator or table for drag coefficients. Multiple views on potential resources remain.

Contextual Notes

Participants have not specified the exact definitions or assumptions underlying the drag coefficient functions, nor have they resolved the mathematical steps needed to calculate air resistance accurately.

Who May Find This Useful

This discussion may be useful for individuals interested in external ballistics, simulation of projectile motion, or those seeking detailed information on drag coefficients for various bullet shapes.

iMakeMehThings
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I cannot seem to find them, and I am confused as to what they are. I am trying to simulate a bullet in flight and need to calculate air resistance. I'd like to be accurate to real life and use a lookup table but I can't seem to find a graph of the drag coefficients that has an accompanying calculator to calculate the exact numbers at each Mach speed.
 
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Welcome to PF.

What Google search terms have you been using? Can you post some links to pages that you have found that are at least close to what you are looking for?
 
berkeman said:
Welcome to PF.

What Google search terms have you been using? Can you post some links to pages that you have found that are at least close to what you are looking for?
Sure, here are things I've found:
https://appliedballisticsllc.com/wp.../Aerodynamic-Drag-Modeling-for-Ballistics.pdf
https://en.wikipedia.org/wiki/External_ballistics
http://dave2.freeshell.org/ammo/coeff8/coeff8.htm
https://kestrelmeters.com/pages/g1-g7-ballistic-coefficients-what-s-the-difference
https://en.wikipedia.org/wiki/Ballistic_coefficient

Most have information or a graph but not a calculator or table.
I've also been using search terms like:
- g1
- g7
- bullet shapes
- drag coefficient
- drag curve
- table
- calculator
 
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I did a Google search on hornady bullet air resistance and this was the first hit. Does it help?

https://www.hornady.com/team-hornady/ballistic-calculators/ballistic-resources/external-ballistics

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