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Re: MythBusters: Bringing on the physics bullet drop

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pnalsing@gmail.com wrote:
> On Sunday, January 10, 2016 at 1:01:05 PM UTC-8, ji...@specsol.spam.sux.com wrote:
>> pnal...@gmail.com wrote:
> 
>> > Does this mean you cannot produce any links at all that support your claim? 
>> 
>> Does this mean you cannot produce any links at all that refute my claims?
> 
> I produced several links that refuted your claim, that claim being that bullets have lift... and having lift implies that they rise. They do not rise.
> 

Read your links closely.

I never claimed bullets rise.

A glider in calm air has lots of lift but it does not rise when in eqilibrium.

What I claimed was that the vertical rate of descent of a fired bullet
is less than that of a dropped bullet in air.


>> I'll throw you a bone; high speed photography shows bullets impacting
>> targets at the same attitude as they were fired.
> 
> Agreed. So what? What does this have to do with lift?

It shows the angle of attack.

FYI angle of attack is the angle between the chord line and the vector
representing the relative motion between the body and the air through
which it is moving.

> Again, You have claimed that bullets fired from a rifle have lift. This may be true, but I cannot find any evidence of this searching the internet other than a few sportsmen that make the same claim, but without presenting any evidence whatsoever. If rifle bullets DO have lift, I would surely like to see the evidence, and therefore I asked to YOU, as the claimant, to put some money where your mouth is and provide that evidence in the form of a scientific explanation, but apparently you are not able to come up with any links either. I'm not insisting that you are wrong, but I am suggesting that you should be able to prove that you are correct.
> 
> \Paul A
 
It is all basic and obvious physics.

It is basic physics that an object moving through air with a positive
angle of attack has lift. Perhaps not a lot, but some and certainly
not enough to cause the bullet to rise. There are lots of links that
discuss the concept of lift and angle of attack.

It is basic physics that the vertical drag of a bullet will depend on
the orientation. This should be blazingly obvious.

For a falling bullet to have the same vertical drag as a fired bullet,
it would have to be dropped with the same attitude as the fired bullet
and that attitude would have to be maintained throughout the fall through
some external force.


-- 
Jim Pennino

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MythBusters: Bringing on the physics bullet drop Sam Wormley <swormley1@gmail.com> - 2016-01-09 20:54 -0600
  Re: MythBusters: Bringing on the physics bullet drop jimp@specsol.spam.sux.com - 2016-01-10 03:09 +0000
    Re: MythBusters: Bringing on the physics bullet drop pnalsing@gmail.com - 2016-01-09 21:25 -0800
      Re: MythBusters: Bringing on the physics bullet drop jimp@specsol.spam.sux.com - 2016-01-10 06:27 +0000
        Re: MythBusters: Bringing on the physics bullet drop pnalsing@gmail.com - 2016-01-10 10:00 -0800
          Re: MythBusters: Bringing on the physics bullet drop jimp@specsol.spam.sux.com - 2016-01-10 20:55 +0000
            Re: MythBusters: Bringing on the physics bullet drop pnalsing@gmail.com - 2016-01-10 13:40 -0800
              Re: MythBusters: Bringing on the physics bullet drop jimp@specsol.spam.sux.com - 2016-01-10 22:21 +0000
                Re: MythBusters: Bringing on the physics bullet drop pnalsing@gmail.com - 2016-01-10 15:56 -0800
                Re: MythBusters: Bringing on the physics bullet drop jimp@specsol.spam.sux.com - 2016-01-11 00:20 +0000
                Re: MythBusters: Bringing on the physics bullet drop pnalsing@gmail.com - 2016-01-10 16:58 -0800
                Re: MythBusters: Bringing on the physics bullet drop jimp@specsol.spam.sux.com - 2016-01-11 01:16 +0000
      Re: MythBusters: Bringing on the physics bullet drop Poutnik <poutnik4nntp@gmail.com> - 2016-01-10 10:12 +0100
        Re: MythBusters: Bringing on the physics bullet drop john <johnsefton288@gmail.com> - 2016-01-10 04:38 -0800
    Re: MythBusters: Bringing on the physics bullet drop R Kym Horsell <kym@kymhorsell.com> - 2016-01-10 22:29 +0000
      Re: MythBusters: Bringing on the physics bullet drop jimp@specsol.spam.sux.com - 2016-01-10 23:13 +0000
  Re: MythBusters: Bringing on the physics bullet drop Double-A <double-a3@hush.com> - 2016-01-10 10:27 -0800
    Re: MythBusters: Bringing on the physics bullet drop R Kym Horsell <kym@kymhorsell.com> - 2016-01-11 01:23 +0000
      Re: MythBusters: Bringing on the physics bullet drop jimp@specsol.spam.sux.com - 2016-01-11 03:16 +0000
        Re: MythBusters: Bringing on the physics bullet drop john <johnsefton288@gmail.com> - 2016-01-10 20:08 -0800

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