An asymptotic analysis of radiant and hypergolic heterogeneous ignition of solid propellants

Liñán Martínez, Amable y Crespo Martínez, Antonio (1972). An asymptotic analysis of radiant and hypergolic heterogeneous ignition of solid propellants. "Combustion Science and Technology", v. 6 ; pp. 223-232. ISSN 0010-2202.

Descripción

Título: An asymptotic analysis of radiant and hypergolic heterogeneous ignition of solid propellants
Autor/es:
  • Liñán Martínez, Amable
  • Crespo Martínez, Antonio
Tipo de Documento: Artículo
Título de Revista/Publicación: Combustion Science and Technology
Fecha: 1972
Volumen: 6
Materias:
Palabras Clave Informales: Asymptotic Analysis, Ignition, Solid Propellants
Escuela: E.T.S.I. Aeronáuticos (UPM) [antigua denominación]
Departamento: Motopropulsión y Termofluidodinámica [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

An asymptotic analysis, in the limit of large activation energies, is presented for the ignition of a solid propellant undergoing an exothermic heterogeneous Arrhenius reaction with a gaseous oxidizer. The analysis is carried out for hypergolic or shock tube ignition conditions, and also for ignition under a radiant flux with in-depth absorption of the radiation. The asymptotic analysis illustrates how, for sufficiently large radiant fluxes, a short reaction stage, ending in thermal runaway, follows a much longer inert heating stage. A closed form expression is found to relate the ignition time to the radiant flux and physico-chemical propellant characteristics. An analytical expression is also found for the ignition time under hypergolic or shock tube ignition conditions. The existing numerical calculations of the ignition time, for hypergolic ignition cases and for ignition under a radiant flux with surface absorption, are very accurately correlated by the closed form expressions resulting from this asymptotic analysis. These expressions take also into account the effects of in-depth absorption.

Más información

ID de Registro: 1232
Identificador DC: http://oa.upm.es/1232/
Identificador OAI: oai:oa.upm.es:1232
Depositado por: Biblioteca ETSI Aeronauticos
Depositado el: 19 Nov 2008
Ultima Modificación: 20 Abr 2016 06:44
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