Underwater DPW Formula

[nuke11]

Originally Posted by mmartin798

I do want to get an opinion. We need to establish what amounts of DPW would constitute a 10% and 50% risk of injury and also what amount yields 10% fatality rates and 50% fatality rates.

Here is some information I found while researching the Mk80 125lb GPLD Bomb. I researched the Mk80, 81 and 82 for an Aircraft supplement I have been working on and off for a number of years.

This might help establish a baseline.

E-FACTOR: 35, 14 average fragment (3 to 300 grains)
DPW: 41,979
BLAST RADIUS;
Lethal: approximately 15.00 m (10 psi, 100% Mortality)
Effective: approximately 30.00 m (3.5 psi, 50% Mortality)

[mmartin798]

Do you happen to know the weight of the explosive in the Mk80 125lb GPLD Bomb? I can't find a Mk 80 series bomb at the 125lb point. I can assume approx 60lb. I can pop it into my spreadsheet and get a damage vs distance plot for air. Then I think I can use the curves from the papers to come up with something more general for underwater.

[nuke11]

Originally Posted by mmartin798

Do you happen to know the weight of the explosive in the Mk80 125lb GPLD Bomb? I can't find a Mk 80 series bomb at the 125lb point. I can assume approx 60lb. I can pop it into my spreadsheet and get a damage vs distance plot for air. Then I think I can use the curves from the papers to come up with something more general for underwater.

Sorry for the delay.

Depending on the filler.

18 Kg Composition H6
20 Kg TNT

What you are looking for is from central america. Columbia produces a 125 lbs GP bomb I used. I figured if the US did produce one it would be very similar to this one. The name came from an extrapolation of the family.

https://indumilweb.dugalu.com/produc...xue-125-lb-pg/
https://publicacionesdigitalessite.w...umil.png?w=840

[mmartin798]

Just a quick update as to where I am in the process and the future direction. Using the data I have, I have a very nice looking curve of survivability versus range with a 10Kg TNT blast. But it is not proving to be easily converting fatality percentage to damage.

I have the paper from the Plos One, so I think I will be able to make aa couple injury versus range plots and then pick some values for points where you are definitely dead and one for barely injured. The rest should fall in and then I can look to see if there is an "easy" scaling to be done between air and water explosions.