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The usual treatment of unsupported detonation, often called the Chapman-Jouguet theory, is based on four assumptions: (1) the detonation approaches a steady state, (2) the flow is laminar and one dimensional, (3) the detonation products approach a state of chemical equilibrium some distance behind the detonation front, and (4) the detonation velocity is the minimum permitted by the conservation conditions. In a recent paper Wood and Fickett (Phys. Fluids 6, 648(1963)) proposed experiments to test the validity of the Chapman-Jouguet "theory", not requiring knowledge or assumptions about the nature of the equation of state of the detonation products, by making variations of the initial state or the explosive. In this paper we report the results of experiments in which (1) the initial state was varied by using mixtures of nitromethane and another liquid made or equal molar parts of nitric acid, acetonitrile, and water, which has the same atomic composition as nitromethane, and (2) the initial state was varied by using TNT as liquid and as solid. These results show that the Chapman-Jouguet theory is violated. The calculated pressures are 15% to 20% below the measured pressures. Results of measurements using other explosives are also presented to support the conclusion …

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Waggoner Carr, regarding a legal question submitted for clarification: Validity of the Central Education Agency’s vouchers issued to colleges and universities which provided teacher training under a State Plan approved by the Agency and the United States Government as authorized in P.L. 88-164, Mental Health Retardation Facilities and Community Mental Health Centers Construction Act.