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About this book

This book is devoted to studies of unsteady heat and mass exchange processes taking into account thermochemical destruction of thermal protective materials, research of transpiration cooling systems, thermal protection of composite materials exposed to low-energy disturbances, as well as the numerical solution of heat and mass transfer of the exchange. It proposes several mathematical models of passive and active thermal protection systems with regard to factors such as surface ablation, surface roughness, phase transition of a liquid in porous materials, rotation of the body around its longitudinal axis, and exposure to low-energy disturbances. The author studies the possibilities to control thermochemical destruction and heat mass exchange processes in transpiration cooling systems exposed to low-energy disturbances. The numerical analysis of the heat and mass exchange process in carbon plastics under repeated impulse action is also presented. The numerical solutions of problems are compared with the known experimental data. The book is intended for specialists in the field of thermal protection and heat mass exchange, as well as graduate and undergraduates in physics and mathematics.

Table of Contents


Chapter 1. Passive Thermal Protection

The development of aerospace engineering has given rise to the need to create lightweight high-temperature structures, polymeric and composite materials , fiberglasses and carbon fiber -reinforced polymers that are widely used as thermal protective materials. Polymer composites contain a thermoset plastic binder as a matrix (e.g., phenol-formaldehyde resins) and a filler-reinforcing elements in the form of glass and carbon-fiber fabrics.
A. S. Yakimov

Chapter 2. Active Thermal Protection

Hydrodynamic methods based on the injection of a coolant gas into the boundary layer—the intense heating zone—through porous surfaces are widely used to protect the head part of flight vehicles and surfaces of power plants against high-enthalpy and chemically aggressive gas flows.
A. S. Yakimov

Chapter 3. Combined Thermal Protection

Rotation around the longitudinal imparted to the body for good stability in flight.
A. S. Yakimov


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