An experimental,research program designed to evaluate the effect of a weakly ionized gas on a propagating shock wave is described. This research was performed in a “large” diameter (4”) shock tube at “near” room temperature (314 K) in 20 Torr Helium, usjng an acoustic pressure se&or to measure the intensity of the shock wave. The initial results from this program indicate that the intensity of the shock is reduced by 25-50% when the Helium is weakly ionized, with ionization fractions on the order of 10-8, while no significant changes in the shock propagation speed are observed.
|Number of pages||8|
|State||Published - Jan 1 1999|
|Event||9th International Space Planes and Hypersonic Systems and Technologies Conference, 1999 - Norfolk, United States|
Duration: Nov 1 1999 → Nov 4 1999
|Conference||9th International Space Planes and Hypersonic Systems and Technologies Conference, 1999|
|Period||11/1/99 → 11/4/99|