Investigation of Wave Rotor Turbofans for Cruise Missile Engines PDF Download
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Author: R. Taussig
Publisher:
ISBN:
Category :
Languages : en
Pages : 135
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Book Description
Wave rotors have been investigated as a technology for improving the performance of small turbofan engines in the 600 to 1000 lb. thrust class. This report summarizes the results of an eight-month study to analyze wave rotor performance for different configurations and to determine its sensitivity to operating and design parameters. Engine cycle calculations were also performed in order to estimate engine performance improvements and sensitivity to the wave rotor component. Wave rotor/turbines and pressure exchanger wave rotors both have been evaluated. In each case, experimental data exists which confirms predicted wave rotor performance over a wide range of operating conditions.
Author: R. Taussig
Publisher:
ISBN:
Category :
Languages : en
Pages : 135
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Book Description
Wave rotors have been investigated as a technology for improving the performance of small turbofan engines in the 600 to 1000 lb. thrust class. This report summarizes the results of an eight-month study to analyze wave rotor performance for different configurations and to determine its sensitivity to operating and design parameters. Engine cycle calculations were also performed in order to estimate engine performance improvements and sensitivity to the wave rotor component. Wave rotor/turbines and pressure exchanger wave rotors both have been evaluated. In each case, experimental data exists which confirms predicted wave rotor performance over a wide range of operating conditions.
Author: R. Taussig
Publisher:
ISBN:
Category :
Languages : en
Pages : 51
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Book Description
The history of wave rotor applications to aircraft turbine engines is reviewed in order to determine the reasons for past successes and failures. The results show that two different kinds of wave rotors performed successfully in laboratory tests in the mid-1950s and late 1960s. These were the Pearson wave rotor/turbine built and tested by Ruston Hornsby in England and the Complex pressure exchange wave rotor built by the Brown-Boveri Company and tested by the Rolls-Royce Company. With the advent of advanced gasdynamic numerical simulation techniques embodied in an experimentally verified computer flow code for wave rotors, the prospect of upgrading these earlier wave rotor designs for a modern high temperature, high pressure aircraft turbofan engine looks very attractive. The flow code would allow very rapid design optimization and cut down the time and costs for successful engine development. A suitable niche for the initial application of wave rotor turbofans has appeared in the area of small, low-TSFC engines; wave rotors may also allow better cruise conditions for high performance engines. (Author).
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 836
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Book Description
Author: Helmut E. Weber
Publisher: John Wiley & Sons
ISBN: 9780471597247
Category : Technology & Engineering
Languages : en
Pages : 246
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Book Description
Written by an author who has devoted the past twenty-five years ofhis life to studying and designing shock wave engines, this uniquebook offers comprehensive coverage of the theory and practice ofshock wave engine design. The only book treating the completepreliminary design of shock wave engines, it provides engineerswith practical step-by-step guidelines applicable to the design andconstruction of small, light- weight, low-powered industrialturbines as well as high performance jet aircraft engines. In his discussions of the advantages and disadvantages of shockwave versus other types of combustion engines, Dr. Weberdemonstrates how and why shock wave engines can be made to workmore efficiently than conventional gas turbines. Among otherthings, he shows quantitatively why combustion temperatures can besignificantly higher in shock wave engines than conventional gasturbines. He evaluates temperatures of moving parts in terms ofcombustion and engine inlet temperatures, and explores the effectof shock coalescence, expansion fan reflections and intersectionson port sizes and locations. And throughout, real and imaginedperformance problems are posed and proven solutions given for shockwave engines--alone and in conjunction with conventional gasturbines or reciprocating internal combustion engines. Designed to function as a practical guide, Shock Wave Engine Designoffers concise step-by-step design techniques in a readily usableformat. Engineers will find precise, detailed directions on suchessentials as how to size wave rotor blade lengths and heights andthe correct rotor diameter for a specified power, and materialselection for rotor and stator. And one entire chapter (Chapter 12)is devoted exclusively to a detailed example design for a 500 hpengine. An authoritative, highly practical guide to state-of-the-art shockwave engine design, this book is an important resource formechanical and aerospace engineers who design aircraft engines orvirtually any type of turbomachinery. Timely, authoritative, practical--an important resource forengineers who design aircraft engines or virtually any type ofturbomachinery Written by a pioneer in the field, this book offers a comprehensivecoverage of state-of-the-art shock wave engine design principlesand techniques. The only book treating the complete preliminarydesign of shock wave engines, this unique guide provides engineerswith: * Concise step-by-step guidelines applicable to the design andconstruction of small, lightweight, low-powered industrial turbinesas well as high-performance jet aircraft engines * In-depth treatments of pressure exchangers, wave engines, andwave engines compounded with reciprocating IC engines * A chapter-length example design for a 500 hp engine * A brief but thorough review of all essential thermodynamics andgas dynamics needed to develop flow equations and calculationmethods
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 706
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Book Description
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 816
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 107
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Book Description
Two recent computer programs, WRCOMP and ENGINE, by A. Mathur, were used to examine the performance to be gained by incorporating a wave rotor component in a turbofan engine with mixed exhausts. The programs were transferred to a VAX-2000 computer, extended, and test cases reported by A. Mathur were successfully reproduced. A comparison was made between ENGINE, in which real gas effects are accounted for, and ONX (by J. Mattingly) in which constant specific heats are used. The inclusion of real gas effects proved to have a significant impact on the predicted performance. An extension of Mathur's results was made by varying the overall pressure ratio in the wave-turbofan engine. Further cycle studies and experiments to measure wave rotor component performance are recommended.
Author:
Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages : 496
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Book Description
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 924
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Book Description
Author:
Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages : 624
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Book Description
