|
|
Post by Nemesis on Nov 16, 2003 15:54:47 GMT -5
After reading the newbie faq, I still don't understand how juoles translate into feet per second, so forth. Could someone please clarify this for me?
|
|
|
|
Post by dicepackage on Nov 16, 2003 16:40:27 GMT -5
|
|
|
|
Post by Nemesis on Nov 16, 2003 16:46:33 GMT -5
Alright thanks for the link and putting it into english ;D
|
|
|
|
Post by Bigmack on Nov 16, 2003 16:49:24 GMT -5
filairsoft.com/airsoft109.htmjust use that tool (halfway down) enter in the weight of BB, and the speed your weapon is firing. most stock TM AEGs fire around 270-290 fps. my G3 fires at around 408 on a good day. (with an M120 upgrade.) by using these tools.. we are able to deduce that Frostee is a whore. <shakes fist at Frostee> you bastard!
|
|
|
|
Post by Knief on Nov 16, 2003 17:04:18 GMT -5
A joule is a mesurement of force. I can push on you with a force of one joule with my hand and you'll rock to the side a bit. Now, if I push on you with a force of 1 joule with a pin, the pin will go through your skin. So, the result of 1 joule (or any number of joules) is relative.
It is relative because it depends upon velocity and mass. I don't know the exact equation (force and work load come in second semester physics, we've pretty much covered projectiles), but there is some relation between velocity and mass that gives an output force of joules.
Let's look at it in practical terms.
Your car can travel 70 mph (miles per hour) which converts to 102.2 fps (feet per second). Let's say that your car weighs one ton (for simplicity). When you crash into something with your car going at 102.2 fps, you're going to total your car and whatever you hit. You'll tear through the guard rails, demolish the Geo Metro (hey, it had it coming), knock the sign over and fell a tree before you come to a stop.
On the other hand, a bb going at that same 102.2 fps won't even be felt through a tee-shirt. It would riccochet off of the wall without leaving a mark. You would feel a car through a tee-shirt if it hit you going 102.2 fps, right? It would make a huge mark in the wall if it hit it going 102.2 fps, right? The damage resulted from the object is directly proportional to the amount of joules imparted on it. In short, the car is heavier and thus "carries" more joules at the same velocity as the much lighter bb.
So, the less mass the object has, the faster it needs to be traveling to attain X joules. A bb can attain the joule force of the car, but the bb needs to be traveling a hell of a lot faster.
Now, bring the car's weight down to a bb's weight. Two of the most common bb weights are .20 grams and .25 grams. The bb with a mass of .25g will carry more energy at the same velocity as the bb with a mass of .20g because it has more mass. Likewise, the .20g bb will carry the same joule force as the .25g bb if the .20g bb is traveling faster (I don't know exactly how much faster) than the .25g bb. Inversely, with the same amount of joules put into both bbs, the lighter bb will travel faster.
I have too much time on my hands
|
|
|
|
Post by Nemesis on Nov 16, 2003 19:52:04 GMT -5
And that, my friends, Is why Michigan airsoft RULES!!! Thanks Biggie, Dice, & Knief  |
|
|
|
Post by Bigmack on Nov 17, 2003 7:16:22 GMT -5
I have too much time on my hands take up knitting. ;D |
|
|
|
Post by Knief on Nov 17, 2003 11:42:34 GMT -5
I said too much time, not too much estrogen  I love the buddy Christ. |
|
|
|
Post by Nemesis on Nov 17, 2003 17:17:41 GMT -5
I said too much time, not too much estrogen .[/quote Do you mind if I put that in my siggy Knief? BigMack do you mind if I put "Take up knitting in there? |
|
|
|
Post by Knief on Nov 17, 2003 19:50:23 GMT -5
go for it
|
|
|
|
Post by Nemesis on Nov 17, 2003 21:00:55 GMT -5
Shweet
|
|
|
|
Post by Bigmack on Nov 17, 2003 23:36:07 GMT -5
knock yourself out.
|
|
