Theoretical And Experimental Performance Of A Solid Fuel Ramjet Combustion Cycle For Hypersonic Flight Conditions
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Author | : P. J. M. Elands |
Publisher | : |
Total Pages | : 13 |
Release | : 1990 |
Genre | : |
ISBN | : |
Download Theoretical and Experimental Performance of a Solid Fuel Ramjet Combustion Cycle for Hypersonic Flight Conditions Book in PDF, Epub and Kindle
A research program has been carried out to validate a numerical simulation of the flow and combustion process in the combustion chamber of a solid fuel ramjet with experimental results. Operating conditions were chosen to represent a sustained missile flight at Mach 4 at an altitude of 13 km. Experimental data were obtained by burning cylindrical fuel grains made of polyethylene and hydroxyl terminated polybutadiene in a solid fuel ramjet using a connected pipe facility. For numerical simulation a computer code was developed, describing rotational symmetric steady-state turbulent reacting flows through channels with and without a sudden expansion. Calculations were carried out using polyethylene as a fuel. For the validation emphasis was laid on the regression rate. The results show that the computer code predicts the mean regression rate with reasonable accuracy. The value for the effective heat of gasification is found to be very important. The experiments and the calculations carried out show the feasibility to apply a solid fuel ramjet for sustained hypersonic flight at these conditions.
Author | : |
Publisher | : |
Total Pages | : 702 |
Release | : 1995 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, Epub and Kindle
Author | : Corin Segal |
Publisher | : Cambridge University Press |
Total Pages | : 271 |
Release | : 2009-06-22 |
Genre | : Technology & Engineering |
ISBN | : 1139478192 |
Download The Scramjet Engine Book in PDF, Epub and Kindle
The renewed interest in high-speed propulsion has led to increased activity in the development of the supersonic combustion ramjet engine for hypersonic flight applications. In the hypersonic regime the scramjet engine's specific thrust exceeds that of other propulsion systems. This book, written by a leading researcher, describes the processes and characteristics of the scramjet engine in a unified manner, reviewing both theoretical and experimental research. The focus is on the phenomena that dictate the thermo-aerodynamic processes encountered in the scramjet engine, including component analyses and flowpath considerations; fundamental theoretical topics related to internal flow with chemical reactions and non-equilibrium effects, high-temperature gas dynamics, and hypersonic effects are included. Cycle and component analyses are further described, followed by flowpath examination. Finally, the book reviews experimental and theoretical capabilities and describes ground testing facilities and computational fluid dynamics facilities developed for the study of time-accurate, high-temperature aerodynamics.
Author | : H. Wittenberg |
Publisher | : |
Total Pages | : 212 |
Release | : 2000 |
Genre | : Science |
ISBN | : |
Download Some Fundamentals on the Performance of Ramjets with Subsonic and Supersonic Combustion Book in PDF, Epub and Kindle
Author | : Abraham Cohen |
Publisher | : |
Total Pages | : |
Release | : 1997 |
Genre | : |
ISBN | : |
Download Experimental Investigation of a Supersonic Combustion Solid Fuel Ramjet Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 480 |
Release | : 1991 |
Genre | : Airplanes |
ISBN | : |
Download AIAA/SAE/ASME/ASEE 27th Joint Propulsion Conference: 91-1833 - 91-1898 Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 1128 |
Release | : 1991 |
Genre | : Government reports announcements & index |
ISBN | : |
Download Government Reports Annual Index Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 0 |
Release | : 1981 |
Genre | : |
ISBN | : |
Download An Investigation of the Combustion Process in Solid Fuel Ramjets Book in PDF, Epub and Kindle
An experimental investigation was conducted into four areas of the solid fuel ramjet combustion process: (1) the effects of near-wall turbulent mixing and equivalence ratio on combustion efficiency, (2) the effects of bypass air on combustion efficiency, (3) the combustion process in a cylindrically perforated fuel grain with a twin side-dump/dome configuration, and (4) the comparison of experimental radial temperature profiles to computer generated radial profiles. Polymethylmethacrylate fuel grains were burned in a ramjet motor and a thrust stand. Combustion efficiencies were determined and compared for different configurations. It was found to be insensitive to variations in the mixture ratio and to near-wall mixing. Bypass air was found to adversely affect the combustion efficiency both in stable and unstable combustion environments. The twin side-dump/dome configuration was unable to sustain combustion for all conditions investigated. Theoretical radial temperature profiles were found to have larger near wall gradients than were measured experimentally. (Author).
Author | : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development |
Publisher | : |
Total Pages | : 614 |
Release | : 1995 |
Genre | : Aeronautics |
ISBN | : |
Download AGARD Index of Publications Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 778 |
Release | : 1992 |
Genre | : Science |
ISBN | : |
Download Government Reports Announcements & Index Book in PDF, Epub and Kindle