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July 19, 2022, 15:46
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Supersonic Bullet Reference Values
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#1 |
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Member
Luca
Join Date: Mar 2021
Location: Italy
Posts: 46
Rep Power: 5  |
Hi guys! I'm trying to run a 2D simulation of a supersonic bullet, obviously I need to impose at least a reference area for the drag evaluation. Currently I'm adopting the cross-sectional area of the bullet (pi/4)*(D^2), where D is the "main" diameter. Is it correct or should I use another formulation? Maybe taking into account the length of the bullet?
Big thanks! 
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July 19, 2022, 17:13
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#2 |
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Senior Member
Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,673
Rep Power: 65 |
The main bore diameter is a very sensible choice for calculating the reference area for a drag coefficient. No I don't think length should go into the calculation of reference area for drag. Bullet overall length and bore are fairly standardized anyway.
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