Expanding a Flutter Envelope Using Accelerated Flight Data - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Expanding a Flutter Envelope Using Accelerated Flight Data write by C. Farhat. This book was released on 2000. Expanding a Flutter Envelope Using Accelerated Flight Data available in PDF, EPUB and Kindle.
Expanding a Flutter Envelope Using Data from Accelerating Flight
Expanding a Flutter Envelope Using Data from Accelerating Flight - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Expanding a Flutter Envelope Using Data from Accelerating Flight write by Charles A. Harris. This book was released on 2004. Expanding a Flutter Envelope Using Data from Accelerating Flight available in PDF, EPUB and Kindle.
Real-time Predictive Flutter Analysis and Continuous Paramter Identification of Accelerating Aircraft
Real-time Predictive Flutter Analysis and Continuous Paramter Identification of Accelerating Aircraft - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Real-time Predictive Flutter Analysis and Continuous Paramter Identification of Accelerating Aircraft write by Charbel Farhat. This book was released on 2001. Real-time Predictive Flutter Analysis and Continuous Paramter Identification of Accelerating Aircraft available in PDF, EPUB and Kindle.
IUTAM Symposium on Integrated Modeling of Fully Coupled Fluid Structure Interactions Using Analysis, Computations and Experiments
IUTAM Symposium on Integrated Modeling of Fully Coupled Fluid Structure Interactions Using Analysis, Computations and Experiments - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook IUTAM Symposium on Integrated Modeling of Fully Coupled Fluid Structure Interactions Using Analysis, Computations and Experiments write by Haym Benaroya. This book was released on 2012-12-06. IUTAM Symposium on Integrated Modeling of Fully Coupled Fluid Structure Interactions Using Analysis, Computations and Experiments available in PDF, EPUB and Kindle. This plenary paper and the accompanying presentation have highlighted field problems involving fluid-structure interaction over a wide span of Navy operations. Considering the vast size and versatility of the Navy's inventory, the cases presented represent examples of a much larger problem. But even this limited set provides sufficient evidence that fluid-structure interaction does hinder the Navy's ability to accomplish its missions. This survey has also established that there are no accurate and generally applicable design tools for addressing these problems. In the majority of cases the state-of-practice is to either make ad-hoc adjustments and estimates based on historical evidence, or conduct expensive focused tests directed at each specific problem and/or candidate solution. Unfortunately, these approaches do not provide insight into the fundamental problem, and neither can be considered reliable regarding their likelihood of success. So the opportunities for applying computational fluid-structure interaction modeling to Navy problems appear limitless. Scenarios range from the "simple" resonant strumming of underwater and in-air cables, to the "self-contained" flow field and vibration of aircraft/ordnance bodies at various Mach numbers, to violent underwater transient detonations and local hull structural collapse. Generally applicable and computationally tractable design-oriented models for these phenomena are of course still far in the future. But the Navy has taken the first steps in that direction by sponsoring specialized numerical models, validation experiments tailored for specific applications, and conferences such as this one.
A Base Drag Reduction Experiment on the X-33 Linear Aerospike SR-71 Experiment (LASRE) Flight Program
A Base Drag Reduction Experiment on the X-33 Linear Aerospike SR-71 Experiment (LASRE) Flight Program - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook A Base Drag Reduction Experiment on the X-33 Linear Aerospike SR-71 Experiment (LASRE) Flight Program write by Stephen A. Whitmore. This book was released on 1999. A Base Drag Reduction Experiment on the X-33 Linear Aerospike SR-71 Experiment (LASRE) Flight Program available in PDF, EPUB and Kindle. Drag reduction tests were conducted on the LASRE/X-33 flight experiment. The LASRE experiment is a flight test of a roughly 20-percent scale model of an X-33 forebody with a single aerospike engine at the rear. The experiment apparatus is mounted on top of an SR-71 aircraft. This paper suggests a method for reducing base drag by adding surface roughness along the forebody. Calculations show a potential for base drag reductions of 8 to 14 percent. Flight results corroborate the base drag reduction, with actual reductions of 15 percent in the high-subsonic flight regime. An unexpected result of this experiment is that drag benefits were shown to persist well into the supersonic flight regime. Flight results show no overall net drag reduction. Applied surface roughness causes forebody pressures to rise and offset base drag reductions. Apparently the grit displaced streamlines outward, causing forebody compression. Results of the LASRE drag experiments are inconclusive and more work is needed. Clearly, however, the forebody grit application works as a viable drag reduction tool.
