Question

Given that Peak side-on overpressure = 17 psi; time of duration = 0.06 sec 70 feet 95 feet 15 feet Blast Calculate: 1. The shock front velocity (4 points) 2. The length of pressure wave (4 points) 3. The peak dynamic wind pressure. (4 points) 4. What expected physical injury can be anticipated per the UFC 3-340 (2 points)

Answer 1

0 The shock ware front velocity is given by Va x speed of sound 1 + 6x Peak side on Pressure 78amblent Pressure v= it 6 X 17. 7 X 14.69 (Lacton Pressure € 14.69 Psi) Va 1 + 102 102-83 X 343.2 m/s V: 485.28 mis ② hength of pressure ware = velocity & Time = 485-28 x 0.06 sec 29-11m Peak wind pressure P= // 3 u² where, f = density of air = 1.29kg/m3 U- wave velocity = 485.28 mis 2 i. Pa (185.21) x 1-29 x = 151,895.35 Pascal 151-895 kPa CS Scanned with CamScanner