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Pressure And Temperature Sensitive Paint Measurements On Rotors
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Author :National Aeronautics and Space Adm Nasa Publisher :Independently Published ISBN 13 :9781724007933 Total Pages :32 pages Book Rating :4.0/5 (79 download)
Book Synopsis Pressure and Temperature Sensitive Paint Measurements on Rotors by : National Aeronautics and Space Adm Nasa
Download or read book Pressure and Temperature Sensitive Paint Measurements on Rotors written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-25 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Luminescent molecular probes imbedded in a polymer binder form a temperature or pressure paint. On excitation by light of the proper wavelength, the luminescence, which is quenched either thermally or by oxygen, is detected by a camera or photodetector. From the detected luminescent intensity, temperature and pressure can be determined. The basic photophysics, calibration, accuracy and time response of luminescent paints is described followed by applications in wind tunnels and in rotating machinery. Sullivan, John Ames Research Center
Book Synopsis Pressure and Temperature Sensitive Paints by : Tianshu Liu
Download or read book Pressure and Temperature Sensitive Paints written by Tianshu Liu and published by Springer Nature. This book was released on 2021-07-31 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition describes pressure and temperature sensitive paints (PSP and TSP) in global surface pressure and temperature measurements in aerodynamics and fluid mechanics. The book includes the latest progress in paint formulations, instrumentation, and steady and unsteady aerodynamic measurements in various facilities including low-speed, transonic, supersonic and hypersonic wind tunnels. The updated technical aspects of PSP and TSP in the book will be useful for students and researchers in experimental aerodynamics and fluid mechanics.
Book Synopsis Pressure Sensitive Paint Measurement on a Rotor by : Donald R. Varner
Download or read book Pressure Sensitive Paint Measurement on a Rotor written by Donald R. Varner and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Toward the development of a measurement system for transonic compressor rotors, the static pressure field over a high-speed test rotor was recorded using pressure sensitive paint (PSP) and an electronically-gated, intensified CCD video camera and frame-grabber. Semi-conductor digital logic circuits were developed to form a phase-locked image capture system which acquired ultra-high-speed, low-light-level gated images once per revolution (1/Rev). A monostable pulse circuit was developed to sum more than 200 gated images over a one-second integration period to build a single image. Rotor speed was measured on an oscilloscope using the 1/Rev trigger-pulse. Also, a pressure vessel was constructed and used to calibrate the PSP over varying pressure and temperature ranges to yield qualitative image intensity versus pressure data. Finally, the static pressure field data over the rotor surface was measured and presented as a 256 grey-scale and color image.
Book Synopsis Pressure Sensitive Paint Measurement on a Rotor by : Donald R. Varner
Download or read book Pressure Sensitive Paint Measurement on a Rotor written by Donald R. Varner and published by . This book was released on 1995 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Toward the development of a measurement system for transonic compressor rotors, the static pressure field over a high-speed test rotor was recorded using pressure sensitive paint (PSP) and an electronically-gated, intensified CCD video camera and frame-grabber. Semi-conductor digital logic circuits were developed to form a phase-locked image capture system which acquired ultra-high-speed, low-light-level gated images once per revolution (1/Rev). A monostable pulse circuit was developed to sum more than 200 gated images over a one-second integration period to build a single image. Rotor speed was measured on an oscilloscope using the 1/Rev trigger-pulse. Also, a pressure vessel was constructed and used to calibrate the PSP over varying pressure and temperature ranges to yield qualitative image intensity versus pressure data. Finally, the static pressure field data over the rotor surface was measured and presented as a 256 grey-scale and color image.
Book Synopsis Pressure-Sensitive Paint Measurements on a Rotor Disk Surface at High Speeds by : Shane G. Gahagan
Download or read book Pressure-Sensitive Paint Measurements on a Rotor Disk Surface at High Speeds written by Shane G. Gahagan and published by . This book was released on 1997-06-01 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurement of the static-pressure distribution over the surface of a rotor disk was attempted using pressure sensitive paint (PSP). A uniform stress, high speed rotor disk, fitted with a shock generator, was built, installed and operated at speeds in excess of 20,000 RPM by a Hamilton Standard turbine driven fuel pump. A once per revolution trigger signal was converted to a transistor to transistor logic (TTL) format and used to gate an intensified charged coupled device (CCD) video camera. Multiple low intensity level camera exposures were integrated and captured to produce a single usable image. Ten captured images were averaged to increase the image's signal to noise ratio and the result was used to produce an image ratio with respect to a static reference condition. Finally, a pseudo coloring process was used to develop a color image that related intensities to both temperature and pressure distributions in accordance with the Stern-Volmer relation. Paint stripping and temperature dependence prevented the measurement of pressure at transonic speeds. The test bed facility and acquisition techniques developed here could now be used to overcome those limitations.
Book Synopsis Calibration to Determine Pressure and Temperature Sensitivities of a Pressure-Sensitive Paint by : Judith A. Muller
Download or read book Calibration to Determine Pressure and Temperature Sensitivities of a Pressure-Sensitive Paint written by Judith A. Muller and published by . This book was released on 2000-06-01 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to obtain quantitative surface pressure measurements of a transonic compressor rotor using pressure sensitive paint (PSP), the temperature dependence of the paint must be taken into consideration. In the present study, a calibration chamber was built and instrumented such that pressure and temperature could be controlled independently. Photodiodes were used to measure the intensity of light emitted by the PSP. An acquisition program was developed to record the necessary calibration data to obtain an analytical representation of the luminescent response of the pressure-sensitive paint over a range of pressures and temperatures characteristic of transonic fans.
Book Synopsis Investigation of Pressure and Temperature Sensitivities of a Pressure Sensitive Paint by : Peter D. Baumann
Download or read book Investigation of Pressure and Temperature Sensitivities of a Pressure Sensitive Paint written by Peter D. Baumann and published by . This book was released on 1998-09-01 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the development of a surface pressure measurement system for transonic compressor rotors, it has been shown that Pressure Sensitive Paint (PSP) is also temperature dependent. In the present study, the sensitivities to pressure and temperature were examined experimentally using an electronically- gated, intensified Charged- Coupled-Device (CCD) video camera, frame-grabber software and an eight-inch diameter calibration chamber. Using a signal generator, in a procedure that matched the requirements of the rotor application, multiple low-intensity-level camera exposures were integrated and captured to produce a single usable image. Ten captured images were averaged to increase the image's signal-to-noise ratio and the result was used to produce an image ratio with respect to a static (ambient pressure/temperature) reference condition. Calibration tests of constant temperature/variable pressure and constant pressure/variable temperature were completed. The results were then compared with data obtained using the same paint and an automated, single- exposure calibration procedure at NASA Ames Research Center. It was shown that the calibration data could be used to derive the static pressure field produced over a high-speed test rotor using PSP and the same image-capture system used in the calibration. In preparation for a bench test of the procedure, a uniform- stress, high-speed test rotor disk, fitted with a shock generator was driven at speeds in excess of 30,000 RPM. Recommendations are made toward the goal of obtaining quantitative pressure measurements on transonic compressor rotors.
Book Synopsis Pressure and Temperature Sensitive Paints by : Tianshu Liu
Download or read book Pressure and Temperature Sensitive Paints written by Tianshu Liu and published by Springer Science & Business Media. This book was released on 2006-01-06 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: Luminescent molecule sensors, called pressure-sensitive paint (PSP) and temperature-sensitive paint (TSP), measure factors essential for understanding the aerodynamic performance and heat transfer characteristics of flight vehicles. They provide a powerful tool for experimental aerodynamicists to obtain a deeper understanding of the rich physical phenomena in complex flows around a flight vehicle. This book helps the reader to understand the physics and chemistry and the capabilities of PSP and TSP. It provides an overview of the wide scope of applications and explains the system requirements for using these sensors. The book also includes an extensive table of properties of PTP and TSP. As such, it is a thorough and up-to-date coverage of the underlying physics and applications of luminescent molecules designed for global pressure and temperature mapping
Book Synopsis Pressure and Temperature Sensitive Paints by : Tianshu Liu
Download or read book Pressure and Temperature Sensitive Paints written by Tianshu Liu and published by Springer. This book was released on 2022-08-02 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition describes pressure and temperature sensitive paints (PSP and TSP) in global surface pressure and temperature measurements in aerodynamics and fluid mechanics. The book includes the latest progress in paint formulations, instrumentation, and steady and unsteady aerodynamic measurements in various facilities including low-speed, transonic, supersonic and hypersonic wind tunnels. The updated technical aspects of PSP and TSP in the book will be useful for students and researchers in experimental aerodynamics and fluid mechanics.
Book Synopsis Rotor Blade Pressure Measurement in a High Speed Axial Compressor Using Pressure- and Temperature-sensitive Paints by : T. Liu
Download or read book Rotor Blade Pressure Measurement in a High Speed Axial Compressor Using Pressure- and Temperature-sensitive Paints written by T. Liu and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Results in Numerical and Experimental Fluid Mechanics XII by : Andreas Dillmann
Download or read book New Results in Numerical and Experimental Fluid Mechanics XII written by Andreas Dillmann and published by Springer Nature. This book was released on 2019-09-26 with total page 867 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers contributions to the 21st biannual symposium of the German Aerospace Aerodynamics Association (STAB) and the German Society for Aeronautics and Astronautics (DGLR). The individual chapters reflect ongoing research conducted by the STAB members in the field of numerical and experimental fluid mechanics and aerodynamics, mainly for (but not limited to) aerospace applications, and cover both nationally and EC-funded projects. Special emphasis is given to collaborative research projects conducted by German scientists and engineers from universities, research-establishments and industries. By addressing a number of cutting-edge applications, together with the relevant physical and mathematics fundamentals, the book provides readers with a comprehensive overview of the current research work in the field. The book’s primary emphasis is on aerodynamic research in aeronautics and astronautics, and in ground transportation and energy as well.
Download or read book Rotating Machinery written by Getu Hailu and published by BoD – Books on Demand. This book was released on 2020-01-08 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rotating machinery or turbomachinery is a machine with a rotating component that transfers energy to a fluid or vice versa. Rotating machines are one of the most widely used machines. They are used in everyday life, at least once a day. We find a turbomachine (fan) in a hair dryer and in a computer. We find a turbomachine (pump) in a refrigerator. Other commonly used household machines are clothes washers and dish washers. These machines need to drain the dirty water and replace with clean water. To do so an important component of these machines is a pump that is used to remove the dirty water. A water pump (hydrodynamic pump) is also essential to our car?s operation by maintaining an optimum operating temperature of the engine. The pump ensures that the coolant keeps circulating through the engine block, hoses and radiator, and maintains an optimum operating temperature. Turbomachines are also key machines used in power generation, fluid transportation, the processing industry and energy conversion. This book presents recent developments in improving the aero-thermal performance and the efficiencies of rotating machines.
Book Synopsis Pressure-Sensitive Paint Measurement Technique Development for Turbomachinery Application by : Kevin J. Quinn
Download or read book Pressure-Sensitive Paint Measurement Technique Development for Turbomachinery Application written by Kevin J. Quinn and published by . This book was released on 1997-12-01 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pressure-sensitive paint measurement on a transonic compressor rotor required the prior development of phase-locked cumulative imaging using a disk- rotor driven by a high-speed Hamilton-Standard turbine as a developmental test- bed. The turbine was installed in a protective housing in the Gas Dynamics Laboratory and connected to an 8000 cu ft, 300 psi air supply. An hydraulic pump provided bearing lubrication. A once per revolution trigger signal was produced from a light-emitting diode and PIN photodiode pair. The imaging system consisted of an intensified CCD video camera externally triggered by the 1/rev signal via a waveform shaping circuit designed for the present application. Images were captured at camera gate speeds calculated to eliminate pixel blur and image integration times were varied to optimize image intensity and spatial resolution. Structural and modal analyses of the disk-rotor were conducted and a simplified numerical model of the flow was computed. Ratioed, colored images were produced for wheel speeds to 20,000 RPM. The effect of the radially varying stagnation temperature was evident, underscoring the importance of quantifying and accounting for the PSP temperature sensitivity so that quantitative pressure data may be obtained. Recommendations for a follow-on program are reported.
Book Synopsis New Results in Numerical and Experimental Fluid Mechanics XI by : Andreas Dillmann
Download or read book New Results in Numerical and Experimental Fluid Mechanics XI written by Andreas Dillmann and published by Springer. This book was released on 2017-10-29 with total page 767 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers contributions to the 20th biannual symposium of the German Aerospace Aerodynamics Association (STAB) and the German Society for Aeronautics and Astronautics (DGLR). The individual chapters reflect ongoing research conducted by the STAB members in the field of numerical and experimental fluid mechanics and aerodynamics, mainly for (but not limited to) aerospace applications, and cover both nationally and EC-funded projects. Special emphasis is given to collaborative research projects conducted by German scientists and engineers from universities, research-establishments and industries. By addressing a number of cutting-edge applications, together with the relevant physical and mathematics fundamentals, the book provides readers with a comprehensive overview of the current research work in the field. Though the book’s primary emphasis is on the aerospace context, it also addresses further important applications, e.g. in ground transportation and energy.
Book Synopsis Use of Pressure Sensitive Paint for Diagnostics in Turbomachinery Flows With Shocks by :
Download or read book Use of Pressure Sensitive Paint for Diagnostics in Turbomachinery Flows With Shocks written by and published by . This book was released on 2001 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Temperature and Pressure-sensitive Paint Measurements in Short-duration Hypersonic Flow by : J. P. Hubner
Download or read book Temperature and Pressure-sensitive Paint Measurements in Short-duration Hypersonic Flow written by J. P. Hubner and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Fluid Dynamics Panel. Symposium Publisher : ISBN 13 : Total Pages :444 pages Book Rating :4.E/5 ( download)
Book Synopsis Advanced Aerodynamic Measurement Technology by : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Fluid Dynamics Panel. Symposium
Download or read book Advanced Aerodynamic Measurement Technology written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Fluid Dynamics Panel. Symposium and published by . This book was released on 1998 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: The demands for higher performance for modern aircraft have led the wind tunnel community, which is an integral link in the design process, to develop more refined and cost effective measuring techniques. These technologies have gradually matured from laboratory novelties into instruments regularly used in aerodynamic testing. The development of these modern measurement techniques has greatly extended the capability and accuracy of the classical methods for measurement techniques and provided better insight into flow physics. This Symposium provided a forum for active researchers to address the state-of-the-art, to exchange experiences and ideas, and for the practitioners to obtain an overview of the technology and learn how to appy it.
