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Old 05-24-2009, 11:20 AM
 
29,036 posts, read 14,379,621 times
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Quote:
Originally Posted by GTOlover View Post
well the 69 camaro is not made to go that fast because it does not make enough down force to keep the car planted

Did you check the link out ? That particular car holds quite a few open road race wins (silver state classic is one of them) , a closed course record and one a zero200zero event. It performs quite well at 200...
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Old 05-24-2009, 12:06 PM
 
Location: Vancouver, B.C., Canada
11,155 posts, read 29,207,864 times
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Quote:
Originally Posted by scarabchuck View Post
Did you check the link out ? That particular car holds quite a few open road race wins (silver state classic is one of them) , a closed course record and one a zero200zero event. It performs quite well at 200...
Drag increases with speed (v). I hope that this is self-evident. An object that is stationary with respect to the fluid will certainly not experience any drag force. Start moving and a resistive force will arise. Get moving faster and surely the resistive force will be greater. The hard part of this relationship lies in the detailed way speed affects drag. Are the two quantities directly proportional? Does drag increase as the square of speed? The square root of speed? The cube of speed … ? According to our model, it should be the first of these. Drag should be proportional to the square of speed. Rv[SIZE=2]2[/SIZE] But for some situations this is not quite correct. As I said before, drag is a complex phenomena. It is cannot always be written with simple mathematical formulas. My first guess would always be that drag is proportional to the square of speed, but I would not be surprised if, over some range of values, it was found to be directly proportional, or proportional to the 3/2 power, or even that drag and speed were related by some polynomial. Welcome to the world of empirical modeling -- where relationships are determined by actual physical experiments rather than an ideology of pure theory. Which brings us to our last factor …
Drag is influenced by other factors including shape, texture, viscosity (which results in viscous drag or skin friction), compressibility, lift (which causes induced drag), boundary layer separation, and so on. These factors can be dealt with separately in a more complete theory of drag (how tedious in one sense, but how necessary in another) or they can be piled into one monolithic fudge factor (oh yes, please) called the coefficient of drag (Cd).
Drag increases with speed (v). I hope that this is self-evident. An object that is stationary with respect to the fluid will certainly not experience any drag force. Start moving and a resistive force will arise. Get moving faster and surely the resistive force will be greater. The hard part of this relationship lies in the detailed way speed affects drag. Are the two quantities directly proportional? Does drag increase as the square of speed? The square root of speed? The cube of speed … ? According to our model, it should be the first of these. Drag should be proportional to the square of speed. Rv[SIZE=2]2[/SIZE] But for some situations this is not quite correct. As I said before, drag is a complex phenomena. It is cannot always be written with simple mathematical formulas. My first guess would always be that drag is proportional to the square of speed, but I would not be surprised if, over some range of values, it was found to be directly proportional, or proportional to the 3/2 power, or even that drag and speed were related by some polynomial. Welcome to the world of empirical modeling -- where relationships are determined by actual physical experiments rather than an ideology of pure theory. Which brings us to our last factor …
Drag is influenced by other factors including shape, texture, viscosity (which results in viscous drag or skin friction), compressibility, lift (which causes induced drag), boundary layer separation, and so on. These factors can be dealt with separately in a more complete theory of drag (how tedious in one sense, but how necessary in another) or they can be piled into one monolithic fudge factor (oh yes, please) called the coefficient of drag (Cd).

Last edited by GTOlover; 05-24-2009 at 12:17 PM..
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Old 05-27-2009, 05:34 PM
 
29,036 posts, read 14,379,621 times
Reputation: 14246
Quote:
Originally Posted by GTOlover View Post
Drag increases with speed (v). I hope that this is self-evident. An object that is stationary with respect to the fluid will certainly not experience any drag force. Start moving and a resistive force will arise. Get moving faster and surely the resistive force will be greater. The hard part of this relationship lies in the detailed way speed affects drag. Are the two quantities directly proportional? Does drag increase as the square of speed? The square root of speed? The cube of speed … ? According to our model, it should be the first of these. Drag should be proportional to the square of speed. Rv[SIZE=2]2[/SIZE] But for some situations this is not quite correct. As I said before, drag is a complex phenomena. It is cannot always be written with simple mathematical formulas. My first guess would always be that drag is proportional to the square of speed, but I would not be surprised if, over some range of values, it was found to be directly proportional, or proportional to the 3/2 power, or even that drag and speed were related by some polynomial. Welcome to the world of empirical modeling -- where relationships are determined by actual physical experiments rather than an ideology of pure theory. Which brings us to our last factor …
Drag is influenced by other factors including shape, texture, viscosity (which results in viscous drag or skin friction), compressibility, lift (which causes induced drag), boundary layer separation, and so on. These factors can be dealt with separately in a more complete theory of drag (how tedious in one sense, but how necessary in another) or they can be piled into one monolithic fudge factor (oh yes, please) called the coefficient of drag (Cd).
Drag increases with speed (v). I hope that this is self-evident. An object that is stationary with respect to the fluid will certainly not experience any drag force. Start moving and a resistive force will arise. Get moving faster and surely the resistive force will be greater. The hard part of this relationship lies in the detailed way speed affects drag. Are the two quantities directly proportional? Does drag increase as the square of speed? The square root of speed? The cube of speed … ? According to our model, it should be the first of these. Drag should be proportional to the square of speed. Rv[SIZE=2]2[/SIZE] But for some situations this is not quite correct. As I said before, drag is a complex phenomena. It is cannot always be written with simple mathematical formulas. My first guess would always be that drag is proportional to the square of speed, but I would not be surprised if, over some range of values, it was found to be directly proportional, or proportional to the 3/2 power, or even that drag and speed were related by some polynomial. Welcome to the world of empirical modeling -- where relationships are determined by actual physical experiments rather than an ideology of pure theory. Which brings us to our last factor …
Drag is influenced by other factors including shape, texture, viscosity (which results in viscous drag or skin friction), compressibility, lift (which causes induced drag), boundary layer separation, and so on. These factors can be dealt with separately in a more complete theory of drag (how tedious in one sense, but how necessary in another) or they can be piled into one monolithic fudge factor (oh yes, please) called the coefficient of drag (Cd).
So what are you trying to say ?!?!? That it can't be done ? Apparently you are better at typing than reading. If you read thru that link they tell you all about the car and how they accomplished running 225, and this was back in 1987 with 540ci , and a single carb.
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