Theory of Aerospace Propulsion

Theory of Aerospace Propulsion
Author: Pasquale M. Sforza
Publisher: Elsevier
Total Pages: 703
Release: 2011-09-27
Genre: Technology & Engineering
ISBN: 012384889X

Theory of Aerospace Propulsion provides excellent coverage of aerospace propulsion systems, including propellers, nuclear rockets, and space propulsion. The book's in-depth, quantitative treatment of the components of jet propulsion engines provides the tools for evaluation and component matching for optimal system performance. Worked examples and end of chapter exercises provide practice for analysis, preliminary design, and systems integration. Readers of this book will be able to utilize the fundamental principles of fluid mechanics and thermodynamics to analyze aircraft engines; understand the common gas turbine aircraft propulsion systems and be able to determine the applicability of each; perform system studies of aircraft engine systems for specified flight conditions; perform preliminary aerothermal design of turbomachinery components; conceive, analyze, and optimize competing preliminary designs for conventional and unconventional missions. The book is organized into 15 chapters covering a wide array of topics such as idealized flow machines; quasi-one-dimensional flow equations; idealized cycle analysis of jet engines; combustion chambers for airbreathing engines; nozzles and inlets; turbomachinery; blade element analysis of axial flow turbomachines; turbine engine performance and component integration; propellers; liquid rockets; solid propellant rockets; nuclear rockets; space propulsion; and propulsion aspects of high-speed flight. This book will appeal to aerospace or mechanical engineers working in gas turbines, turbomachinery, aircraft propulsion and rocket propulsion, and to undergraduate and graduate level students in aerospace or mechanical engineering studying aerospace propulsion or turbomachinery. - Early coverage of cycle analysis provides a systems perspective, and offers context for the chapters on turbomachinery and components - Broader coverage than found in most other books - including coverage of propellers, nuclear rockets, and space propulsion - allows analysis and design of more types of propulsion systems - In depth, quantitative treatments of the components of jet propulsion engines provides the tools for evaluation and component matching for optimal system performance - Worked examples and end of chapter exercises provide practice for analysis, preliminary design, and systems integration

Combustion Characteristics of Turbo Charged DISI-engines

Combustion Characteristics of Turbo Charged DISI-engines
Author: Henrik Hoffmeyer
Publisher: Logos Verlag Berlin GmbH
Total Pages: 193
Release: 2012
Genre: Technology & Engineering
ISBN: 3832530797

In spite of progress in the development of alternative powertrain systems and energy sources, the internal combustion and all its derivates still are and will be the main powertrain for automobiles. In SI-engines, several approaches compete with each other like the controlled auto ignition (CAI or HCCI), throttle-free load control using variable valvetrains, stratified mixture formation with lean engine operation or highly turbo charged downsizing concepts all combined with gasoline direct injection. The presented work makes a contribution for a deeper understanding of the combustion process of a turbo charged direct injection engine operating with external EGR as well as lean stratified mixture. Using detailed test bench investigations and introducing a new optical measurement tool, the combustion process is described in detail focusing on the occurrence of non-premixed combustion phenomena. The influence of engine parameters like global and local air-/fuel ratio, external EGR and fuel rail pressure as well as the influence of fuel parameters are discussed giving a characterization of the combustion process of stratified engine operation. Furthermore, the influences of non-inert exhaust gas components on engine knock tendency are investigated using external EGR with an EGR catalyst. Opposing the results to numerical analysis, combustion characteristics of turbo charged DISI-engines are presented.