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- From: toby@stein.u.washington.edu (Toby Bradshaw)
- Newsgroups: rec.guns
- Subject: Re: Recoil Formula
- Message-ID: <1k6bs4INN8tj@shelley.u.washington.edu>
- Date: 28 Jan 93 04:15:18 GMT
- Sender: magnum@mimsy.umd.edu
- Organization: University of Washington, Seattle
- Lines: 38
- Approved: gun-control@cs.umd.edu
-
- In article <9301261811.AA11040@sweetpea.jsc.nasa.gov> weed@sweetpea.jsc.nasa.gov (daniel weed 283-4162) writes:
- #You'll probably get a bunch of different ways to measure recoil.
- #I think the best mathematical way is this:
- #
- #Take the muzzle velocity of the bullet times the bullet weight, then
- #divide that by the weight of the gun. Be sure the weight of the gun
- #and of the bullet are in the same units, either pounds or grains
- #(7000 grains = 1 pound).
- #
- #The result is a velocity, in feet per second, called the Recoil Velocity.
- #If you were to suspend your rifle on the end of a long wire, like a
- #pendulum, then remotely fired the gun, the bullet would go one way, the
- #rifle would go the other, and what you have calculated is the velocity the
- #rifle would attain. (this has actually been done).
-
- Oops. Neglects the momentum of the propellant gases, and is therefore
- pretty misleading.
-
- #This of course, ignores many factors that affect _perceived_ recoil, such
- #as moving internal parts, the length of time over which the impulse
- #occurs, butt padding, sound, etc. But it does provide a fairly good
- #relative measure of recoil. It takes into account both the bullet
- #energy and the weight of the gun.
-
- Toby Bradshaw
- Department of Biochemistry and College of Forest Resources
- University of Washington, Seattle
- toby@u.washington.edu
-
- "A well-educated electorate being necessary to the prosperity of
- a free state, the right of the people to keep and read books, shall
- not be infringed." Do you conclude from this that only voters may
- own books?
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