By Kenneth K. Kuo, Martin Summerfield
This ebook identifies technological gaps in numerous parts of solid-propellant combustion and encourages additional developments in solid-propellant propulsion platforms in order that destiny structures could be designed and constructed with greater potency, larger reproducibility, and greatest defense concerns. as a result of range and breadth of the sector, this quantity includes contributions from many amazing researchers who converse from their respective components of workmanship in solid-propellant combustion. all of the 15 chapters presents a survey of past paintings within the topic sector, an in depth description of significant theoretical formula and experimental tools, correct experimental and theoretical effects, and technological gaps and destiny study directions.
- facts and data showing during this ebook are for informational reasons simply. AIAA and the writer aren't answerable for any damage or harm caused by use or reliance, nor do AIAA and the writer warrant that use or reliance could be loose from privately owned rights.
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Extra info for Fundamentals of Solid-Propellant Combustion
During this phase the most important consideration is the time needed to attain propellant combustion after the start of the ignitor. This period is termed ignition delay or t ID » During the second phase the flame spreads over the unignited surface and during the third phase the combustion products are accumulated in the motor chamber until a steady-state pressure is attained. 55 56 K. KISHORE AND V. GAYATHRI From the viewpoint of the chemistry involved, tjD is an important consideration because it depends upon the chemical characteristics of the propellant.
It is likely that one or more types of mechanism models such as gas-phase, condensed-phase, and catalytic reactions contribute energy to the ignition process. For a specific case, the relative importance of any single reaction will depend upon factors such as local concentration, local temperature, interfacial chemical and physical structure, external heating rate, and pressure. There is a need to develop some sort of unified ignition theory taking into account all of the observed factors. II. Chemistry of Combustion Introduction to Combustion Mechanism The mechanism of combustion of the propellant is not fully understood.
V a r i o u s models have been proposed; h o w e v e r , because ignition is a complex phenomenon, it cannot be explained by a single theory. Combustion is discussed mainly in terms of condensed-phase and gas-phase reactions. The v a r i o u s processes occurring during combustion are classified as reactions at the s u r f a c e , below the surface, and in the gas phase. From the concept of bond breakage and vaporization of f r a g m e n t s at the surface, a n u m b e r called mean f r a g m e n t size vaporizing has been defined and an attempt has been made to use this to calculate the b u r n i n g rate.
Fundamentals of Solid-Propellant Combustion by Kenneth K. Kuo, Martin Summerfield