Why am I getting 3 different answers from 3 different programs?
Projectile mass: 28 grams / .987 oz / 432.1 grains
Projectile velocity: 900 fps
EVBEC (live): 1450 ft-lbs
Some online calc: 781 ft-lbs
GGDT: 777 ft-lbs
GGDT isn't too far off, but why is evbec reading so abnormally high?
Muzzle Energy
-
jackssmirkingrevenge
- Five Star General
- Posts: 26219
- Joined: Thu Mar 15, 2007 11:28 pm
- Has thanked: 581 times
- Been thanked: 347 times
GGDT is about spot on, your online calculator is there but not as accurate while EVBEC is way off.
edit: The evbec result is approximately twice what it should be, coincidence or maybe there's an error in the program formula?
edit: The evbec result is approximately twice what it should be, coincidence or maybe there's an error in the program formula?
- Attachments
-
- me.JPG (33.69 KiB) Viewed 1691 times
hectmarr wrote:You have to make many weapons, because this field is long and short life
-
Fnord
- First Sergeant 2
- Posts: 2239
- Joined: Tue Feb 13, 2007 9:20 pm
- Location: Pripyat
- Been thanked: 1 time
- Contact:
Damn, now I feel like I've been lying every time I've told someone the ME of one of my combustion guns.
Oh well. I guess I could still get the hybrid to do 700 ft-lbs. Wouldn't want to be holding it though.
Oh well. I guess I could still get the hybrid to do 700 ft-lbs. Wouldn't want to be holding it though.
-
boilingleadbath
- Staff Sergeant 2
- Posts: 1635
- Joined: Sat Mar 12, 2005 10:35 pm
- Location: Pennsylvania, USA
Oh, not this again...
I did practically the same thing in EVBEC 1.4
Here is the problem:
1) I calculate the muzzle energy in joules
2) I convert (incorrectly) this into foot-pounds
Specifically, I'm dividing by .7376 instead of multiplying.
This means that all our European friends have been getting the correct answer... but we haven't.
Very sorry about that.
I did practically the same thing in EVBEC 1.4
Here is the problem:
1) I calculate the muzzle energy in joules
2) I convert (incorrectly) this into foot-pounds
Specifically, I'm dividing by .7376 instead of multiplying.
This means that all our European friends have been getting the correct answer... but we haven't.
Very sorry about that.
Create an account or sign in to join the discussion
You need to be a member in order to post a reply
Create an account
Not a member? register to join our community
Members can start their own topics & subscribe to topics
It’s free and only takes a minute