![]() ![]() However, the breech chamber pressure values are only available for some weapons and these are not more reliable or consistent than muzzle velocity or direct penetration measurements. These are the dominating factors which determine the muzzle velocity and give an approximate value. ![]() To do this, the pressure inside the breech chamber must be determined and the acceleration of the projectile must be calculated over the length of the barrel. ![]() May not be perfect, but it would be a lot more usefull than simply cluttering the Internet with yet another set of gun data that means very little.One could initially be of the opinion that the calculation of the muzzle velocity is a relatively simple matter. If you really want to present some usefull information to the users of your website, then I'd suggest reseraching how the various guns and tanks performed against each other in reality as well as giving some calculated examples based on Bird & Livingstons formulas. And you can bet that you will get plenty of people who either does not understand your figures or will criticize them for being "wrong" because they do not conform with the test data they know, like the data found on "Achtung Panzer". It doesn't say much about how the guns would compare in any real-world situation against an enemy tank. So yes, you can compare the various guns, but only for this particular situation. (His book is also used by gamemakers)īird & Livingston converts penetration data from various tests to penetration at 0 degree impact vs a 240 BHN good quality RHA plate with 50% of the shots fired penetrating, penetration defined as the majority of the projectile penetrating. Lorrin made the penetration tables equal to each other. In one of the articles of the site I want to compare the battle tanks who had fought in Normandy, and put the data into an microsoft office excel diagram.īut I can't compare German tests with English/US tests. Broeloe wrote: I'm creating a website over the battle of normandy. ![]()
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