Accession Number : AD0254643

Title :   THE STRUCTURE OF THE DISCONTINUITY IN DETONATION WAVES

Corporate Author : PRINCETON UNIV NJ FRICK CHEMICAL LAB

Personal Author(s) : LEVITT, B. ; HORNIG, D.F.

Report Date : 15 MAR 1961

Pagination or Media Count : 1

Abstract : The optical reflectivity technique was used to study the structure of the initial discontinuity in detonation waves in H2 : 302 at initial pressures of 20 to 40 psia. The detonation fronts were found to be comparable to normal shock waves in their thickness and planarity. The density change across the front appeared less than the theoretical value, suggesting that rotational relaxation of oxygen (and hydrogen) in the front may not be complete. Experiments on shock waves in oxygen at Mach 3.0, where the final temperature is 872 K, confirm the rotational heat capacity lag and suggest that rotational relaxation is much slower at high temperatures than at room temperature. (Author)

Descriptors :   *DETONATION WAVES, *OPTICS, *SHOCK WAVES, FLUID MECHANICS, GASES, HYDROGEN, LIGHT, OXYGEN, PHYSICAL CHEMISTRY, REFLECTION, REFRACTIVE INDEX, RELAXATION TIME.

Distribution Statement : APPROVED FOR PUBLIC RELEASE