Diggun Posted November 23, 2018 Posted November 23, 2018 22 hours ago, unreasonable said: inertial frame of reference hey guys, I found this weird old book in my work today that seems to have some relevant stuff to say about this.... in particular this bit: 'The motion of bodies in a given space is the same amongst themselves, whether that space is at rest, or moves uniformly forwards in a right line without any circular motion' So that's cleared that up.... ah. 'work'.....
[PFR]Sarpalaxan Posted November 23, 2018 Posted November 23, 2018 Argued with someone n the internet. Didn't curse. used Mathematics to determin what is true. Both parties accepted this truth. Can someone call the chronicler for the Internet? On the other hand you can calculate everything to death. What about the added gravitational pull of a much heavier Bomber compared to a light fighter? What about .... *gets dragged of kicking, and screaming formulas.* 1
SCG_Schneemann Posted November 23, 2018 Posted November 23, 2018 On 11/22/2018 at 10:22 AM, unreasonable said: Now take out air resistance (and the other RL complications) and this is exactly the same as the bomber/fighter case we were discussing. Uh... except you can't. The bomber/fighter case isn't operating in a vacuum? RL is when I follow a friend in a car at 35mph and throw an egg at him and he throws an egg at me at the same time. I am sure I have a bigger impact on my windscreen than his back window. I think the bigger question is why were throwing eggs at each other in the first place.
69th_Mobile_BBQ Posted November 24, 2018 Posted November 24, 2018 (edited) On the other hand, and back to the OP.... Today, I talked with a few 109 and 190 pilots who've had the pleasure of shooting me down. Some of them were able to provide with their gun cam footage so I could see what their attacks on my Pe-2 looks like from their perspective. It was, umm, educational. https://www.youtube.com/watch?v=2Ers7JSQRPE edit: Sorry, I haven't learned how to make the video player play inside the comment area. Edited November 24, 2018 by Mobile_BBQ
il2crashesnfails Posted November 24, 2018 Author Posted November 24, 2018 16 hours ago, Diggun said: hey guys, I found this weird old book in my work today that seems to have some relevant stuff to say about this.... ah. 'work'..... Some light reading there! 1
unreasonable Posted November 24, 2018 Posted November 24, 2018 9 hours ago, SCG_Schneemann said: Uh... except you can't. The bomber/fighter case isn't operating in a vacuum? RL is when I follow a friend in a car at 35mph and throw an egg at him and he throws an egg at me at the same time. I am sure I have a bigger impact on my windscreen than his back window. I think the bigger question is why were throwing eggs at each other in the first place. Traffic cop, after pulling you over "Move you hands away from the eggs, slowly.... now what's going 'ere?" Schneemann "We are trying to prove that the motion of the cars is affecting the size of the egg splashes, honestly officer". Traffic cop "In that case I am going to have to book you for recklessly failing to control for the effect of windspeed independently of vehicular motion". *** The difference in collision velocity in your case is purely due to the difference in air resistance: your eggs in the following car face a windspeed of 35mph plus your initial arm velocity, his face a windspeed of his initial arm velocity minus 35 mph. That is a huge difference even for a West Indian fast bowler, projecting eggs at 100mph as they do. 100+35 = 135, squared = 18,225 100-35 = 65, squared = 4,224 So means your eggs will suffer 18,225/4,224 = 4.3 times as much initial drag resistance. They will slow down much faster. This is the impact of the v^2 term in the drag equation. If you put both your cars in a wind tunnel, stationary, and vary the wind speed from nil up to to a speed higher than your egg's arm velocity, you will eventually have your own egg on your face as well as the egg of your friend: the yolk will be on you. Do this again with the cars moving - you need a long wind tunnel - and you shell see that the difference in the results for the front and rear eggs are purely a function of the wind speeds relative to the eggs, not the car speeds relative to the ground.
il2crashesnfails Posted November 24, 2018 Author Posted November 24, 2018 3 hours ago, unreasonable said: Traffic cop, after pulling you over "Move you hands away from the eggs, slowly.... now what's going 'ere?" Schneemann "We are trying to prove that the motion of the cars is affecting the size of the egg splashes, honestly officer". Traffic cop "In that case I am going to have to book you for recklessly failing to control for the effect of windspeed independently of vehicular motion". *** The difference in collision velocity in your case is purely due to the difference in air resistance: your eggs in the following car face a windspeed of 35mph plus your initial arm velocity, his face a windspeed of his initial arm velocity minus 35 mph. That is a huge difference even for a West Indian fast bowler, projecting eggs at 100mph as they do. 100+35 = 135, squared = 18,225 100-35 = 65, squared = 4,224 So means your eggs will suffer 18,225/4,224 = 4.3 times as much initial drag resistance. They will slow down much faster. This is the impact of the v^2 term in the drag equation. If you put both your cars in a wind tunnel, stationary, and vary the wind speed from nil up to to a speed higher than your egg's arm velocity, you will eventually have your own egg on your face as well as the egg of your friend: the yolk will be on you. Do this again with the cars moving - you need a long wind tunnel - and you shell see that the difference in the results for the front and rear eggs are purely a function of the wind speeds relative to the eggs, not the car speeds relative to the ground. could you tell me why my engine in the bf109 did that in the steep dive? i thought it was fuel injected.
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