Download or read book Effects of Incomplete Fuel air Mixing on the Performance Characteristics of Mixed Compression Shock induced Combustion Ramjet Shcramjet Engines written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Incomplete Fuel air Mixing on the Performance Characteristics of Mixed Compression Shock induced Combustion Ramjet Shcramjet Engines written by Tim Redford and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Incomplete Fuel air Mixing on the Performance Characteristics of Hypersonic Shock induced Combustion Ramjets shcramjets written by Jurgen Schumacher and published by . This book was released on 1995 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 2000 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scramjet Combustion written by Gautam Choubey and published by Butterworth-Heinemann. This book was released on 2022-07-08 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scramjet Combustion explores the development of a high-speed scramjet engine operating in the supersonic/hypersonic range for various air and space transport applications. The book explains the basic structure, components, working cycle, and the relevant governing equations in a clear manner that speaks to both advanced and more novice audiences. Particular attention is paid to efficient air–fuel combustion, looking at both the underlying fundamentals of combustion as well strategies for obtaining optimum combustion efficiency. Methods for reaching the chemically correct air–fuel ratio, subsequent flame, and combustion stabilization as air enters at supersonic speed are also outlined. Further, it includes the continuous on-going efforts, innovations, and advances with respect to the design modification of scramjet combustors, as well as different strategies of fuel injections for obtaining augmented performance while highlighting the current and future challenges. Outlines the fundamentals of scramjet engines including their basic structure and components, working cycle, governing equations, and combustion fundamentals affecting the combustion and mixing processes Presents new design modifications of scramjet combustors and different fuel injection strategies including combined fuel injection approaches Discusses core topics such as chemical kinetics in supersonic flow, fuel–air mixing methods, strategies for combating combustion difficulties, and subsequent flame and combustion stabilization that can be applied to scramjets Describes the pedagogy for computational approaches in simulating supersonic flows
Download or read book Journal of Propulsion and Power written by and published by . This book was released on 2008 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hypersonic Mixed compression Inlet Shock induced Combustion Ramjets written by Derrick Alexander and published by . This book was released on 2006 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study investigates the performance and flow field features of a mixed-compression inlet shock-induced combustion ramjet (shcramjet). In a shcramjet, oncoming air is compressed with shocks in the inlet and then further compressed and mixed with hydrogen fuel in a duct prior to shock-induced combustion and expansion of the combustion products through a divergent nozzle to provide thrust. Numerical studies are undertaken using the WARP code that solves the Favre-averaged Navier-Stokes equations closed by the Wilcox k-o turbulence model. Hydrogen/air combustion is solved via the twenty reaction, nine species combustion model of Jachimowski. Mixing augmentation through the use of cantilevered ramp injector arrays on opposite shcramjet inlet walls is studied and the influence of relative array locations is quantified. Increased spanwise distance between adjacent injectors on opposite walls allows for increased jet penetration and fuel distributions in the center of the engine duct. Chemically reacting studies verify an air buffer is created between the fuel and walls that suppresses premature ignition while still allowing for an air based mixing efficiency of up to 0.46-0.54. Combustion is produced over aerodynamic wedges with the spatial flow variation dictating both detonation and shock-induced combustion can be present over constant angle wedges. The initial inlet angle must be as high as possible, while avoiding premature ignition, to generate the pressure in the combustor needed for significant positive thrust. Thrust production from combustion is found to be insensitive to wedge angle if combustion is initiated across the cross-sectional area. Strong recirculation regions are formed via shock/boundary layer interactions in the confined engine duct. Mitigation of the recirculation is demonstrated with correct placement of the nozzle expansion in conjunction with air blowing in the boundary layer at a mass flow rate on the order of that of the fuel injection. For flight at Mach 11 the mixed-compression inlet shcramjet is found to generate a specific impulse of 683 s in the simulation of a realistic three-dimensional flow field.
Download or read book AIAA Journal written by American Institute of Aeronautics and Astronautics and published by . This book was released on 2006 with total page 1380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of External Fuel Injection on the Fuel air Mixing Efficiency and Inlet Performance of a Supersonic Combustion Ramjet Engine written by Gary Alan Heilala and published by . This book was released on 1967 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of external fuel injection on the fuel-air mixing efficiency and inlet performance of a scramjet engine was investigated experimentally. To this end, a series of tests were run in a Mach 3 wind tunnel in which helium was injected externally, at varied mass flow rates and at angles of 15, 45, and 90 degrees to the airflow, at a point forward of the inlet section of a two-dimensional scramjet model. Total pressure and helium volumetric concentration profiles were obtained. The results of the study indicate that, for external fuel injection in a scramjet engine having a two-dimensional, ramp inlet, the injection angle for optimum fuel mixing and inlet performance lies in the range from 5 to 20 degrees. (Author).
Download or read book Analysis of Ram jet Engine Performance Including Effects of Component Changes written by Richard J. Weber and published by . This book was released on 1956 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of External Fuel Injection on the Fuel air Mixing Efficiency and Inlet Performance of a Supersonic Combustion Ramjet Engine written by Gary Alan Heilala (CAPT, USAF.) and published by . This book was released on 1967 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Fundamentals on the Performance of Ramjets with Subsonic and Supersonic Combustion written by H. Wittenberg and published by . This book was released on 2000 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Combustion Behavior of Solid Fuel Ramjets Vol II Effects of Fuel Properties and Fuel air Mixing on Combustion Efficiency written by Michael E. Metochianakis and published by . This book was released on 1981 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamental SFRJ fuel properties were determined using a DTA and a gas chromatograph for both high and low heating rates. The performance of these fuels was then measured under various operating conditions and test geometries. Fuel properties were found to have some effect on the obtainable combustion efficiency but much larger effects could be induced by the flow conditions (induced mixing near the fuel surface, bypass air, etc.). (Author).
Download or read book Combustion Behavior of Solid Fuel Ramjets Volume II Effects of Fuel Properties and Fuel Air Mixing on Combustion Efficiency written by Michael E. Metochianakis and published by . This book was released on 1981 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamental SFRJ fuel properties were determined using a DTA and a gas chromatograph for both high and low heating rates. The performance of these fuels was then measured under various operating conditions and test geometries. Fuel properties were found to have some effect on the obtainable combustion efficiency but much larger effects could be induced by the flow conditions (induced mixing near the fuel surface, bypass air, etc.). (Author).
Download or read book Analysis of Nonconstant Area Combustion and Mixing in Ramjet and Rocket ramjet Hybrid Engines written by Andrzej Dobrowolski and published by . This book was released on 1966 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Fuel on Performance of a Compression ignition Engine of the Air swirl Type written by Z. D. Choraso and published by . This book was released on 1933 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Fuel air Ratio Concentration in Combustion Zone on Combustion Performance of a 16 inch Ram jet Engine written by A.J. Cervenka and published by . This book was released on 1953 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
