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FRONT CURVATURE RATE STICK MEASUREMENTS AND DETONATION SHOCK DYNAMICS CALIBRATION
 

Summary: FRONT CURVATURE RATE STICK MEASUREMENTS
AND DETONATION SHOCK DYNAMICS CALIBRATION
FOR PBX 9502 OVER A WIDE TEMPERATURE RANGE
L.G. Hill, J.B. Bdzil, T.D. Aslam
Los Alamos National Laboratory
Los Alamos, NM 87545
Detonation velocities and wave shapes were measured for PBX 9502 95
wt. TATB, 5 wt. Kel-F 800 rate sticks at the temperatures -55, 25, and
75 C. At each initial temperature T0 three diameters were red: 50 mm, 18
mm, and 8, 10, and 12 mm respectively for the hot, ambient, and cold sticks.
Wave shape data were t with an analytic form, and the tting parameters
are listed along with thermal expansion and diameter e ect data. For each
T0, the simplest detonation shock dynamics model assumes that the local
normal wave speed Dn depends only on the local total curvature . The
data con rm this notion for small , but curves for di erent charge diameters
diverge at large . For each charge diameter, waves propagated more ideally
in hotter charges than colder ones. For each T0 a single best Dn curve was
found by global optimization. From these a Dn;T0 calibration surface was
generated to allow computation of problems with temperature gradients.
INTRODUCTION

  

Source: Aslam, Tariq - Los Alamos National Laboratory

 

Collections: Physics