raaaid

06-23-2007, 08:23 AM

does il2 use flat earth physics for the tumbling of bullets or round earth physics?

on 1 of the 3 classes of physics which i went to i learnt parabolic shooting, it takes acceleration on the y axe and linear velocity on the x axe, you solve the equations and get where the bullet is

i suppose this is the system il2 uses it adding it slowing down of bullet due to drag

but this is not valid for supersonic bullets becaause gravity goes not downward but towards a point on the center of the earth because earth is rounded

so in a system where theres a fast bullet and a fixed massive spot bullets dont make parabolas but ellipses as kepler stated

using flat physics or rounded physics makes a dramatic change on tumbling of bullets and a very difficult problem

imagine you shoot a bullet at match 1 from 10km alt horizontally earth stands as a fixed massive point on the equations 15000km downwards

the bullet has 90º direction with respect to the massive point and being relatively low its speed it enters a very eccentric orbit, something like a cigar

kepler stated that the massive point will be the focus of the ellipse and being the initial trajectory of 90º with respect to the massive point when the bullets is shot it can only be on the ellipse on the farthest point from the focus or on the closest point to the focus and the focus in this kind of ellipse is very close to either one of the extremes

this means that when the bullet is in your antipodes it will have lost a lot of altitude or will have gain a lot

thats why i suppose il2 uses flat earth physics theres no way to solve rounded earth physics

on 1 of the 3 classes of physics which i went to i learnt parabolic shooting, it takes acceleration on the y axe and linear velocity on the x axe, you solve the equations and get where the bullet is

i suppose this is the system il2 uses it adding it slowing down of bullet due to drag

but this is not valid for supersonic bullets becaause gravity goes not downward but towards a point on the center of the earth because earth is rounded

so in a system where theres a fast bullet and a fixed massive spot bullets dont make parabolas but ellipses as kepler stated

using flat physics or rounded physics makes a dramatic change on tumbling of bullets and a very difficult problem

imagine you shoot a bullet at match 1 from 10km alt horizontally earth stands as a fixed massive point on the equations 15000km downwards

the bullet has 90º direction with respect to the massive point and being relatively low its speed it enters a very eccentric orbit, something like a cigar

kepler stated that the massive point will be the focus of the ellipse and being the initial trajectory of 90º with respect to the massive point when the bullets is shot it can only be on the ellipse on the farthest point from the focus or on the closest point to the focus and the focus in this kind of ellipse is very close to either one of the extremes

this means that when the bullet is in your antipodes it will have lost a lot of altitude or will have gain a lot

thats why i suppose il2 uses flat earth physics theres no way to solve rounded earth physics