Drag And Fuel Minimization And Entropy Based Performance Analysis Of Hypersonic Vehicles
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| Author | : Levi Gregory Terhune |
| Publisher | : |
| Total Pages | : 138 |
| Release | : 2006 |
| Genre | : Drag (Aerodynamics) |
| ISBN | : |
"Research was first conducted on the performance-enhancing potential of flow-field modification via upstream energy deposition for aerospace vehicles in high-speed flow using computational fluid dynamics (CFD). It was shown that significant reductions in both external drag and propellant mass flow rate requirements (i.e. overall power requirements) for vehicle configurations in cruise can be realized using such techniques...A second part of this investigation developed entropic (2nd law-based) analysis for force-based performance evaluation of entire vehicle configurations. Such a methodology allowed for the correct implementation of a common 'currency' of loss evaluation and incorporates vehicle wake issues"--Abstract, leaf iii.
| Author | : Trent Matthew Taylor |
| Publisher | : |
| Total Pages | : 161 |
| Release | : 2007 |
| Genre | : Aerodynamics, Hypersonic |
| ISBN | : 9780549017462 |
"This dissertation addresses in detail three main topics for advancing the state-of-the-art in hypersonic aerospace systems: 1) the development of a synergistic method based on entropy generation in order to analyze, evaluate, and optimize vehicle performance, 2) the development and analysis of innovative unconventional flow-control methods for increasing vehicle performance utilizing entropy generation as a fundamental descriptor and predictor of performance, and 3) an investigation of issues arising when evaluating (predicting) actual flight vehicle performance using ground test facilities"--Abstract, leaf iii.
| Author | : Claudio Bruno |
| Publisher | : Springer Nature |
| Total Pages | : 314 |
| Release | : 2023-11-27 |
| Genre | : Technology & Engineering |
| ISBN | : 9811979278 |
This book details science of hypersonics especially focusing on propulsion aspects such as supersonic combustion ramjets and their applications, and also includes lift and drag in hypersonic flight and their mathematical and physical explanation. It provides charts and data from hypersonic testing and measurements from actual vehicles and engines built in the past. Criteria to dimension hypersonic powered and unpowered vehicles (gliders) based on fundamental fluid dynamics and backed by flight testing; criteria to preliminary sizing vehicles and preliminary dimensioning of supersonic combustors are introduced. The book will serve better theoretical understanding of drag, lift and how to apply them to the design of hypersonic vehicles, as well as data to size vehicles and supersonic combustion ramjet (SCRJ) systems. This book will be a useful reference for researchers and designers in hypersonic vehicles but also second or third-year graduate students.
| Author | : Bernard Tiegerman |
| Publisher | : |
| Total Pages | : 788 |
| Release | : 1975 |
| Genre | : Drag (Aerodynamics) |
| ISBN | : |
| Author | : Giuseppe Pezzella |
| Publisher | : BoD – Books on Demand |
| Total Pages | : 150 |
| Release | : 2019-10-02 |
| Genre | : Science |
| ISBN | : 1839622695 |
In the aviation field there is great interest in high-speed vehicle design. Hypersonic vehicles represent the next frontier of passenger transportation to and from space. However, several design issues must be addressed, including vehicle aerodynamics and aerothermodynamics, aeroshape design optimization, aerodynamic heating, boundary layer transition, and so on. This book contains valuable contributions focusing on hypervelocity aircraft design. Topics covered include hypersonic aircraft aerodynamic and aerothermodynamic design, especially aeroshape design optimization, computational fluid dynamics, and scramjet propulsion. The book also discusses high-speed flow issues and the challenges to achieving the dream of affordable hypersonic travel. It is hoped that the information contained herein will allow for the development of safe and efficient hypersonic vehicles.
| Author | : Daniel Alain Magee |
| Publisher | : |
| Total Pages | : 84 |
| Release | : 1995 |
| Genre | : Aerodynamics, Hypersonic |
| ISBN | : |
| Author | : National Aeronautics and Space Administration (NASA) |
| Publisher | : Createspace Independent Publishing Platform |
| Total Pages | : 34 |
| Release | : 2018-07-03 |
| Genre | : |
| ISBN | : 9781722255732 |
An integrated computational model of a generic hypersonic vehicle was developed for the purpose of determining the vehicle's performance characteristics, which include the lift, drag, thrust, and moment acting on the vehicle at specified altitude, flight condition, and vehicular configuration. The lift, drag, thrust, and moment are developed for the body fixed coordinate system. These forces and moments arise from both aerodynamic and propulsive sources. SCRAMjet engine performance characteristics, such as fuel flow rate, can also be determined. The vehicle is assumed to be a lifting body with a single aerodynamic control surface. The body shape and control surface location are arbitrary and must be defined. The aerodynamics are calculated using either 2-dimensional Newtonian or modified Newtonian theory and approximate high-Mach-number Prandtl-Meyer expansion theory. Skin-friction drag was also accounted for. The skin-friction drag coefficient is a function of the freestream Mach number. The data for the skin-friction drag coefficient values were taken from NASA Technical Memorandum 102610. The modeling of the vehicle's SCRAMjet engine is based on quasi 1-dimensional gas dynamics for the engine diffuser, nozzle, and the combustor with heat addition. The engine has three variable inputs for control: the engine inlet diffuser area ratio, the total temperature rise through the combustor due to combustion of the fuel, and the engine internal expansion nozzle area ratio. The pressure distribution over the vehicle's lower aft body surface, which acts as an external nozzle, is calculated using a combination of quasi 1-dimensional gas dynamic theory and Newtonian or modified Newtonian theory. The exhaust plume shape is determined by matching the pressure inside the plume, calculated from the gas dynamic equations, with the freestream pressure, calculated from Newtonian or Modified Newtonian theory. In this manner, the pressure distribution along the vehicle after body expa...
| Author | : John David Anderson |
| Publisher | : AIAA |
| Total Pages | : 710 |
| Release | : 1989 |
| Genre | : Science |
| ISBN | : 9781563474590 |
This book is a self-contained text for those students and readers interested in learning hypersonic flow and high-temperature gas dynamics. It assumes no prior familiarity with either subject on the part of the reader. If you have never studied hypersonic and/or high-temperature gas dynamics before, and if you have never worked extensively in the area, then this book is for you. On the other hand, if you have worked and/or are working in these areas, and you want a cohesive presentation of the fundamentals, a development of important theory and techniques, a discussion of the salient results with emphasis on the physical aspects, and a presentation of modern thinking in these areas, then this book is also for you. In other words, this book is designed for two roles: 1) as an effective classroom text that can be used with ease by the instructor, and understood with ease by the student; and 2) as a viable, professional working tool for engineers, scientists, and managers who have any contact in their jobs with hypersonic and/or high-temperature flow.
| Author | : |
| Publisher | : |
| Total Pages | : 548 |
| Release | : 1992 |
| Genre | : Aeronautics |
| ISBN | : |
| Author | : José A. Camberos |
| Publisher | : American Institute of Aeronautics & Astronautics |
| Total Pages | : 0 |
| Release | : 2011 |
| Genre | : Technology & Engineering |
| ISBN | : 9781600868399 |
This book illustrates the editors' application of a scientific principle, the second law of thermodynamics, for aerospace engineering. It discusses how they applied this law to advance aerospace systems analysis and design optimization. It also discusses their research program which incorporates a systematic theoretical basis for constructing the proper formulas quantifying exergy balance, development of new computational capabilities for calculating exergy destruction, and exploration of novel approaches for system-level design. Topics include: identification of the upper limits on engineering system performance using the second law of thermodynamics; design methodology integration with tools developed in CFD and MDA/MDO; application of exergy methods to all levels of flight vehicle design; and, future directions, including constructal theory, quantum thermodynamics, and numerical methods in light of the second law
