Investigation of Three Types of Supersonic Diffuser Over a Range of Mach Numbers from 1.75 to 2.74


Book Description

An investigation was conducted in the Lewis 4- by 4-inch variable Mach number tunnel to determine off-design internal performance of three types of supersonic diffuser. Results were obtained at Mach numbers ranging from 1.75 to 2.74 with a normal-shock diffuser, two single-shock spike diffusers designed for Mach numbers 1.75 and 2.40, respectively, and tree convergent-divergent perforated diffusers designed for Mach numbers 1.75, 2.10, and 2.50, respectively. The variation of total-pressure recovery with relative mass flow was determined at various Mach numbers in the range. A thrust coefficient based on these measurements was utilized to facilitate interpretation of the results.




Handbook of Supersonic Aerodynamics


Book Description




Applied Gas Dynamics


Book Description

A revised edition to applied gas dynamics with exclusive coverage on jets and additional sets of problems and examples The revised and updated second edition of Applied Gas Dynamics offers an authoritative guide to the science of gas dynamics. Written by a noted expert on the topic, the text contains a comprehensive review of the topic; from a definition of the subject, to the three essential processes of this science: the isentropic process, shock and expansion process, and Fanno and Rayleigh flows. In this revised edition, there are additional worked examples that highlight many concepts, including moving shocks, and a section on critical Mach number is included that helps to illuminate the concept. The second edition also contains new exercise problems with the answers added. In addition, the information on ram jets is expanded with helpful worked examples. It explores the entire spectrum of the ram jet theory and includes a set of exercise problems to aid in the understanding of the theory presented. This important text: Includes a wealth of new solved examples that describe the features involved in the design of gas dynamic devices Contains a chapter on jets; this is the first textbook material available on high-speed jets Offers comprehensive and simultaneous coverage of both the theory and application Includes additional information designed to help with an understanding of the material covered Written for graduate students and advanced undergraduates in aerospace engineering and mechanical engineering, Applied Gas Dynamics, Second Edition expands on the original edition to include not only the basic information on the science of gas dynamics but also contains information on high-speed jets.




Hypersonic Curved Compression Inlet and Its Inverse Design


Book Description

This book presents systematic research results on curved shock wave-curved compression surface applied to the compression surface design of supersonic–hypersonic inlet, which is a brand new inlet design. The concept of supersonic inlet curved compression discussed originated from the author’s research at the Deutsches Zentrum fur Luft- und Raumfahrt (DLR SM-ES) in the early 1990s. This book introduces the research history, working characteristics, performance calculation and aerodynamic configuration design method of this compression mode in detail. It also describes method of estimating the minimum drag in inlet and drag reduction effect of curved compression and proposes a new index for evaluating unit area compression efficiency of the inlet. Further, it reviews the relevant recent research on curved compression. As such it is a valuable resource for students, researchers and scientists in the fields of hypersonic propulsion and aeronautics.