Mach 130 air shock attenuation studies

Conference · Thu Nov 30 04:00:00 EST 1978

OSTI ID:6512289

Glenn, H D; Kratz, H R; Keough, D D; Swift, R P

Voitenko compressors were used to generate approx. 4.5 cm/..mu.. sec air shocks in a steel and a grout outlet pipe. Diaphragm burst times and time-of-arrival data of shock-front luminosity along the 2-cm-i.d. exit pipes are provided by fiber-optics ports. Pressure profiles were obtained for this high enthalpy shock propagation for the first time and at many locatons in both experiments. The Voitenko-grout experiment represents the first laboratory attempt to study shock propagation with this type of compressible wall material. The primary purpose of these two experiments was to examine the effect of wall material on high-energy shock propagation. In the interval between 10- and 250-cm from the diaphragm the velocity and peak pressure of the shock front attenuated from approx. = 4.5 to 0.5 cm/..mu.. sec and approx. = 21 to approx. =0.2 kb, respectively. Over this distance the shock propagation gave nearly identical results for both experiments within the range of experimental accuracy. This rapid attenuation of the shock front velocity and pressure is attributed to ablation and entrainment of wall material. An interesting feature that was observed, confirmed by multiple measurement techniques, was rapid oscillations of the pressure profiles. The results indicate that the shock propagation is independent of wall composition to the extent of materials considered over the 250-cm distance of the outlet pipes.

• Research Organization: California Univ., Livermore (USA). Lawrence Livermore Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6512289
• Report Number(s): UCRL-82012; CONF-781197-1
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450202* -- Explosions & Explosives-- Nuclear-- Weaponry-- (-1989)
BLAST EFFECTS
CRATERING EXPLOSIONS
EQUIPMENT
EXPLOSIONS
MILITARY EQUIPMENT
NUCLEAR EXPLOSIONS
ORDNANCE
PIPES
SHOCK WAVES
SIMULATION
SUBSURFACE STRUCTURES
SURFACE EXPLOSIONS
TUNNELS
VEHICLES