Accession Number : AD0727991

Title :   The Linear Pyrolysis of Ammonium Perchlorate by Convective Heating.

Descriptive Note : Doctoral thesis,

Corporate Author : STEVENS INST OF TECH HOBOKEN N J DEPT OF MECHANICAL ENGINEERING

Personal Author(s) : Cole,Richard B. ; McAlevy,Robert F. , III

Report Date : JUN 1971

Pagination or Media Count : 208

Abstract : A new technique for investigating the linear, surface pyrolysis of ammonium perchlorate (AP) is reported along with the results of extensive testing of pressed AP at 1 atm. ambient pressure. The technique involves both convective heating by an impinging jet from a gas rocket and also surface-temperature measurement by infrared spectraradiometry. An apparent activation energy of 22 kcal/mole is reported for AP with surface temperatures between 425 and 575C and with regression rates between 0.002 and 0.04 cm/sec. The overall pyrolysis mechanism is proposed to be rate-controlled, dissociative sublimation. The technique used and the results reported are the first such for AP which allow for consideration of partial pressures and heat fluxes at the pyrolyzing surface in addition to measurements of regression rates and surface temperatures during pyrolysis. (Author)

Descriptors :   (*AMMONIUM PERCHLORATE, *PYROLYSIS), SURFACES, HEAT OF ACTIVATION, REACTION KINETICS, SOLID ROCKET PROPELLANTS, SUBLIMATION, THESES

Subject Categories : Physical Chemistry
      Solid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE