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Author : A. H. Newcombe
Publisher :
ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.:/5 (34 download)
Download or read book Flame Stabilization in a Model Ram-jet Combustion Chamber written by A. H. Newcombe and published by . This book was released on 1951 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : V. N. Gruzdev
Publisher :
ISBN 13 :
Total Pages : 17 pages
Book Rating : 4.:/5 (227 download)
Download or read book Flight Regimes of a Vehicle with a Ramjet Engine which Provide for Constant Conditions of Flame Stabilization written by V. N. Gruzdev and published by . This book was released on 1967 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: An attempt is made to find the flight regimes of a vehicle with a ramjet engine which permits operation of the combustion chamber without flameout. The conditions of flame stabilization in a straight-through combustion chamber with the aid of poorly streamlined bodies (mechanical stabilizers) to a significant extent depend on the physical parameters of the mixture that enters the chamber, i.e., pressure and temperature. The latter, in turn, are functions of the flight regime of the vehicle, i.e., the velocity and altitude of flight (M and H). Thus, the conditions of flame stabilization, in the final result, are determined by the flight regime of the vehicle.
Author : Kareem Ahmed
Publisher :
ISBN 13 :
Total Pages : 149 pages
Book Rating : 4.:/5 (644 download)
Download or read book FLAME STABILIZATION IN A MODEL RAMJET COMBUSTOR USING A TRANSVERSE SLOT JET written by Kareem Ahmed and published by . This book was released on 2009 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flame stabilization is the act of maintaining combustion in the presence of a high-speed premixed flow, and continues to be an important process that influences the performance and limitations for propulsion applications. A common approach for current generation flame holders involves the employment of a low-speed recirculation zone where hot combustion products are maintained and act as a continuous ignition source. The recirculation zone is often induced using a wake-generating bluff body that is submerged in the flow, or through the use of a rearward facing step. A fluidic-based flame holder using a transverse slot jet issuing into a cross flow offers potential thrust and efficiency benefits for propulsion. The transverse slot jet flame holder has been shown to develop a low-speed recirculation zone capable of stabilizing a stationary flame, analogous to a rearward-facing step (i.e. a wall-bounded bluff body). Turbulent flame structures were investigated for various flame holders. The role of baroclinic torque on turbulent flame structures evolution and the flowfield will be described. Comparisons will be made to a rearward-facing step flame holder. The details of the turbulent flow with and without combustion will be described, showing the potential advantages achieved using fluidics. The fluidic flame holder provides competitive flame holding performance to the mechanical counterpart, while having enhanced combustion rates that result in higher combustor efficiencies and/or shorter burners.
Author : Ephraim M. Howard
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.3/5 (91 download)
Download or read book Combustion-chamber Performance with Four Fuels in Bumblebee 18-inch Ram Jet Incorporating Various Rake- Or Gutter-type Flame Holders written by Ephraim M. Howard and published by . This book was released on 1948 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mikhail Makarovich Bondari͡u︡k
Publisher :
ISBN 13 :
Total Pages : 466 pages
Book Rating : 4.X/5 (1 download)
Download or read book Ramjet Engines written by Mikhail Makarovich Bondari͡u︡k and published by . This book was released on 1969 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Antonella Ingenito
Publisher : Springer Nature
ISBN 13 : 3030668819
Total Pages : 117 pages
Book Rating : 4.0/5 (36 download)
Download or read book Subsonic Combustion Ramjet Design written by Antonella Ingenito and published by Springer Nature. This book was released on 2021-01-29 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a step-by-step methodology for the design of ramjet engines. It explores ramjet combustion, provides guidelines on how to size the engines, and discusses performance analysis. The book begins with an introduction to ramjet design, including fundamental definitions in the field. It then discusses ramjet engine performance, and fuels which can be used. Several types of ramjet engines are then explored, and guidelines for their design are presented, including flame holders, injectors, and combustors. Finally, the book concludes with a discussion of the types of materials which should be used for ramjet engines. This book is of interest to engine designers and engineers, researchers, and graduate students, as it collates research in a succinct, clear guide to the issue of designing ramjet engines.
Author : V. S. Zuyev
Publisher : Elsevier
ISBN 13 : 1483152820
Total Pages : 261 pages
Book Rating : 4.4/5 (831 download)
Download or read book Combustion Chambers for Jet Propulsion Engines written by V. S. Zuyev and published by Elsevier. This book was released on 2013-10-22 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combustion Chambers for Jet Propulsion Engines focuses on the design of combustion chambers for turbo-jet and ramjet engines, including reheat systems. This compilation, which is a training manual for the combustion chamber course held in the Moscow Aeronautical Institute, provides a general presentation of the basic elements of the process of operation, characteristics, and design of combustion chambers. This manual is divided into two parts. Part One discusses the elements of chemical kinetics and the theory of combustion of a homogeneous mixture in gas streams. The second part is devoted to the thermodynamics of the combustion chamber; aerodynamic and thermal losses; construction of the combustion chamber; and description of the operating process. The problem concerning the effect of losses in combustion chambers on the characteristics of jet propulsion engines is also elaborated in this text. This publication is valuable to aeronautical and combustion engineering students.
Author : Vincent C. Rethman
Publisher :
ISBN 13 :
Total Pages : 62 pages
Book Rating : 4.:/5 (27 download)
Download or read book An Investigation of the Performance of Flame Stabilizers in a Six Inch Ram Jet Combustion Chamber written by Vincent C. Rethman and published by . This book was released on 1946 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : George H. Markstein
Publisher : Elsevier
ISBN 13 : 1483221628
Total Pages : 339 pages
Book Rating : 4.4/5 (832 download)
Download or read book Nonsteady Flame Propagation written by George H. Markstein and published by Elsevier. This book was released on 2014-12-02 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonsteady Flame Propagation provides information pertinent to flame propagation in gaseous media. This book focuses on linearized treatments and the comparison of their results with experimental observations. Organized into nine chapters, this book begins with an overview of the challenge of nonlinear problems and examines the essentially nonlinear character of the flame phenomena, which has been artificially suppressed in analyses by the use of linearized perturbation treatments. This text then summarizes the development regarding rocket-shaped burners. Other chapters consider the advantages as well as the limitations of linearized analyses. This book discusses as well a general treatment of the discontinuous-flame-front model and summarizes the results of studies of burner that use secondary air. The final chapter deals with re-examining the possibilities of using pulsating combustion in propulsion or in other applications. This book is a valuable resource for chemical engineers, chemists, scientists, and research workers.
Author : Gordon L. Dugger
Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.F/5 ( download)
Download or read book Ramjets written by Gordon L. Dugger and published by . This book was released on 1969 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : YU K. ZASTELA
Publisher :
ISBN 13 :
Total Pages : 1 pages
Book Rating : 4.:/5 (227 download)
Download or read book A Method of Stabilizing the Combustion Zone in Combustion Chambers of Ram-jet Engines written by YU K. ZASTELA and published by . This book was released on 1962 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: A method of stabilizing the combustion zone in combustion chambers of ram-jet engines with liquid fuel fed into a moving air flow by an atomizer is described. In order to reduce the pressure losses in the stabilizer, the combustion zone is stabilized by feeding compressed air in a radial direction from the axis of the atomizer through a narrow annular slit located in front of the atomizer. (Author).
Author : E. Karl Bastress
Publisher :
ISBN 13 :
Total Pages : 206 pages
Book Rating : 4.:/5 (178 download)
Download or read book The Effects of Pilot Flame Ignition on Flame Stabilization in an Open Flame Burner and in a Ram-jet Type Burner written by E. Karl Bastress and published by . This book was released on 1954 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (55 download)
Download or read book A Fluidic Dump Combustor for Ramjet Engines written by and published by . This book was released on 2009 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flame stabilization is the act of maintaining combustion in the presence of a high-speed premixed flow, and continues to be an important process that influences the performance and limitations for propulsion applications. A common approach for current generation flame holders involves the employment of a low-speed recirculation zone where hot combustion products are maintained and act as a continuous ignition source. The recirculation zone is often induced using a wake-generating bluff body that is submerged in the flow, or through the use of a rearward facing step. A fluidic-based flame holder using a transverse slot jet issuing into a cross flow offers potential thrust and efficiency benefits for propulsion. The transverse slot jet flame holder has been shown to develop a low-speed recirculation zone capable of stabilizing a stationary flame, analogous to a rearward-facing step (i.e. a wall-bounded bluff body).
Author : Michael J. Nusca
Publisher :
ISBN 13 :
Total Pages : 59 pages
Book Rating : 4.:/5 (227 download)
Download or read book Steady Flow Combustion Model for Solid-Fuel Ramjet Projectiles written by Michael J. Nusca and published by . This book was released on 1989 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: Various solid-fuel ramjet (SFRJ) tubular projectiles have been developed. A spin-stabilized 75mm version has been designed for use as a tank gun training round (TGTR) for the 105mm, M68 tank cannon. Computational efforts aimed at modeling the combustion in the SFRJ are essential to future design modifications and applications of the SFRJ to high-velocity, low drag, anti-tank projectile systems. The steady flow Navier-Stokes equations are written in stream function-vorticity form and solved using a Gauss-Seidel relaxation scheme. A diffusion-flame combustion model is formulated and linked to the Navier-Stokes equations by equations for the conservation of chemical species mass and source terms in the energy equation. Since a steady-state solution is produced, solid fuel ignition and depletion events are ignored. Radiation effects due to combustion are also neglected. The diffusion-flame combustion model assumes a mass-controlled reaction between fuel and oxidizer (air). The reaction occurs in one step and is undirectional. The reaction is diffusion-controlled so that the reaction rate is faster than the diffusion rate. An actual value for the reaction rate is not required since a single equation for the conservation of fuel and oxidizer mass is formulated. The model includes the effects of axial rotation of the combustion chamber. A phenomenological turbulence model is used. Computed solid fuel regression rate and thrust for a solid-fuel ramjet projectile agree well with experimental data and in-flight observations. Keywords: Solid-fuel ramjet; Combustion model; Computational fluid dynamics. (kt).
Author :
Publisher :
ISBN 13 :
Total Pages : 145 pages
Book Rating : 4.:/5 (227 download)
Download or read book STABILIZATION OF A FLAME AND THE DEVELOPMENT OF THE COMBUSTION PROCESS IN TURBULENT FLOW (SELECTED PARTS). written by and published by . This book was released on 1963 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Influence of Turbulence Parameters on the Velocity of Flame Propagation; Investigation of Propagation and Stabilization of a Flame Behind a Trough-Shaped Stabilizer; Influence of the Turbulence Parameters on the Combustion of a Homogeneous Gasoline-Air mixture behind a Stabilizer Under Conditions of a Closed Stream ;, Combustion of Gasoline-Air Mixture Behind Stabilizer Systems; and On the Design of the Simplest Combustion Chamber of the RamJet Type.
Author : E. T. Curran
Publisher : AIAA
ISBN 13 : 9781600864414
Total Pages : 1354 pages
Book Rating : 4.8/5 (644 download)
Download or read book Scramjet Propulsion written by E. T. Curran and published by AIAA. This book was released on 2001 with total page 1354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Fred A. Wilcox
Publisher :
ISBN 13 :
Total Pages : 39 pages
Book Rating : 4.:/5 (11 download)
Download or read book Some Effects of Gutter Flame-holder Dimensions on Combustion-chamber Performance of 20 Inch Ram Jet written by Fred A. Wilcox and published by . This book was released on 1948 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
