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Thursday, April 23, 2020 | History

2 edition of Pressure-sensitive paint measurements on a rotor disk surface at high speeds found in the catalog.

Pressure-sensitive paint measurements on a rotor disk surface at high speeds

  • 101 Want to read
  • 27 Currently reading

Published by Naval Postgraduate School, Available from National Technical Information Service in Monterey, Calif, Springfield, Va .
Written in English

    Subjects:
  • ROTOR BLADES (TURBOMACHINERY)

  • About the Edition

    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.

    Classifications
    LC ClassificationsG126
    The Physical Object
    Paginationviii, 52 p. ;
    Number of Pages52
    ID Numbers
    Open LibraryOL25303205M
    OCLC/WorldCa640490399

      Pressure and Temperature Sensitive Paint Field System [Sprinkle, Danny R., Nasa Technical Reports Server (Ntrs), Et Al] on *FREE* shipping on qualifying offers. Pressure and Temperature Sensitive Paint Field SystemAuthor: Danny R. Sprinkle, Clifford J. Obara, Tahani R. Amer, Nettie D. Faulcon, Michael T. Carmine, Cecil G. et al. ). The pressure-sensitive paint measurements were acquired in the White Field wind tunnel at the Uni-versity of Notre Dame (see Fig. 3). The wind tunnel is a closed-return tunnel with a m 9 m test section and is capable of test section speeds up to a Mach number of In this test, data were acquired at M = The turretCited by:


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Pressure-sensitive paint measurements on a rotor disk surface at high speeds by Shane G. Gahagan Download PDF EPUB FB2

Thesis advisor, Raymond P. Shreeve. This banner text can have : Approved for public release; distribution is unlimitedMeasurement 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, RPM by a Hamilton Standard Pressure-sensitive paint measurements on a rotor disk surface at high speeds book driven fuel : Shane G Gahagan.

Pressure-sensitive paint (PSP) is a pressure measurement technique based on the oxygen quenching of luminescence and enables us to measure the pressure non-invasively.

This paper describes a proof of concept test to examine the feasibility of using pressure sensitive paint (PSP) to measure the pressure distributions on a rotor in hover. The test apparatus consisted of the US Army 2-meter Rotor Test Stand (2MRTS) and 15% scale swept tip rotor blades.

Pressure-sensitive paint (PSP) is a pressure measurement technique based on the oxygen quenching of luminescence and enables us to measure the pressure non-invasively.

In general, however, the temperature sensitivity of PSP makes it difficult to measure the precise pressure on the surface with temperature by: Unsteady pressure-sensitive paint (PSP) measurements were acquired on an articulated model helicopter rotor of m diameter in edgewise flow to simulate forward flight conditions.

The relationship between surface illumination and paint luminescence is linear; thus, any change in surface illumination will result in an equal change in paint luminescence. Errors in pressure measurements caused by surface illumination variations can stem from several Size: 1MB.

ture-sensitive paint measurements on a second rotor blade. Instantaneous, unsteady surface pressure maps at a rotation rate of 82 Hz captured different aerodynamic responses between the. A pressure-sensitive luminescent coating containing tris(4,7-diphenylphenanthroline) ruthenium(II) ([Ru(dpp) 3] 2+) on porous anodized aluminum was made to measure nonperiodic unsteady pressure pressure distribution on a delta wing at a high angle of attack in transonic flow is unstable due to the interaction between shock waves and leading-edge vortices [33].

Pressure-sensitive paint (PSP) is a relatively new aerodynamic measurement tool with the unique capability of providing a field measurement of pressure over a test surface. An introductory review of this technology is presented, which is confined to the application of the PSP method to aircraft development wind tunnel by:   Pressure-sensitive paint is an image-based measurement technique which operates on the photokinetic reaction between flowing air and a luminescent coating applied to the surface of a model, in which a molecular-sized array of chemical sensors responds to Cited by:   A low-density wind tunnel called the Mars wind tunnel, has been developed at Tohoku University that can produce a high subsonic flow at low pressures for aerodynamic measurements of low-Reynolds-number aircraft wings aimed at developing aircraft applicable to the atmosphere on the planet Mars.

Accurate surface pressure measurements on the wing are essential for analysis of not Cited by: 5. Pressure sensitive paint measurement on a Rotor Paperback – January 1, by Donald R.

Varner (Author) See all formats and editions Hide other formats and editions. Price New from Used from Paperback, "Please retry" — Author: Donald R.

Varner. Due to the high temporal resolution and contactless nature of measurements, TSPs are invaluable for the thermal imaging of moving surfaces, for example, moving rotor blades.

By using fast-response PSP and TSP, Jiao et al. [45] simultaneously imaged pressure and temperature fields on turbocharger compressor blades that had rotation speeds as.

Accurate surface pressure measurements on the wing are essential for analysis of not only aerodynamic performance, including lift and drag, but also the flow fields around the wing. This paper presents a surface pressure measurement technique using pressure-sensitive paint (PSP) applicable for Mars wind tunnel tests under low-pressure by: 5.

There appears fluttering phenomena in a hard disk drive system with high-speed disks rotating inside a closed space, leading to degrade of reading and writing performance. The precise pressure distribution on the disk may improve the performance, but there has been no report because it is very hard to measure the surface pressure using Author: Tomohiro Kameya, Yu Matsuda, Hiroki Yamaguchi, Yasuhiro Egami, Tomohide Niimi.

Pressure sensitive paint (PSP) was used to measure pressure on the blades of a radial compressor with a 51 mm inlet diameter rotating at speeds up to 50 krpm using the so called lifetime method.

A diode laser with a scanning-mirror system was used to illuminate the paint and the luminescent lifetime was registered using a photo by: 5.

The testing was conducted in the Rotor Test Cell and the by ft Subsonic Tunnel at the NASA Langley Research Center on the General Rotor Model System (GRMS) test stand.

The ach-scaled rotor contained M chordwise rows of dynamic pressure transducers for Cited by: Until recently, wind tunnel measurements were made solely by pressure taps.

But now an optical measurement method has been introduced and is replacing the usual instrumentation, at least for transonic wind tunnels: Pressure-Sensitive Paint, or PSP, which is a method generating an image of the pressure on the by: In contrast, the pressure-sensitive paint (PSP) technique, which is a coated optical sensor, is applicable to thin airfoil models (Liu and Sullivan ).

The purpose of this study is to develop the PSP technique for quantitative surface-pressure distribution measurements in the by: 5. High Perfomance mode on Surface Book i5 dGPU - Is it safe to use.

I followed instructions online on how to enable High Performance Mode as a power setting for the battery. When I turn this on, I can get much better Frames Per Second in games. Single-shot temperature- and pressure-sensitive paint measurements on an unsteady helicopter blade using temperature-sensitive paint measurements on a second rotor blade.

Instantaneous, unsteady surface pressure maps at a rotation rate of 82 Hz captured different aerodynamic responses between the two sides of the rotor disk and were Cited by:   Pressure-sensitive paint (PSP) is an image-based measurement technique based on the photokinetic reaction between an airflow and a luminescent coating applied to the surface of a model, in which a molecular-sized array of chemical sensors respond to the local air pressure at the wall [6, 7].Cited by: In addition, the added centrifugal loads of the pressure transducers can rapidly become unmanageable.

Applying pressure sensitive paint (PSP) to the surface may enable high spatial resolution surface measurements on helicopter rotor blades, thus allowing more accurate analytical prediction methods to Author: Anthony Neal Watkins, Bradley D.

Leighty, William E. Lipford, Oliver D. Wong, Kyle Z. Goodman, James. The tube length was dlctated by the physlcal constraints of the lnstallatlon. Data acqulsltion was lnltlated when approprlate wlnd condltlons were observed. Upon command, the output of the 29 sensors was scanned and 2.

digitized at a rate of sensors per second, taking msec to measure a File Size: 4MB. Pressure problem Surface 3 with Paint tool sai Hello everyone, I buy the Surface pen hoping to be able to draw on paint tool sai, but I've realized that the pressure does not work, I watch forums, so I install the Wintab driver, but it does still not working.

Abstract: Pressure sensitive paint (PSP) was used to measure pressure on the blades of a radial compressor with a 51 mm inlet diameter rotating at speeds up to 50 krpm using the so called lifetime method.

A diode laser with a scanning-mirror system was used to illuminate the paint and the luminescent lifetime was registered using a photo. I just ran CrystalDiskMark on the GB SB to see the SSD performance so utterly terrible. Seq Q32T1: R W 4K Q32T1: R W Seq:R W paint(PSP).

A uniform-stress,high-speed rotordisk,fitted witha shock generator, was built,installed and operated at speeds in excess of20, RPM by a Hamilton-Standard turbine-driven fuel pump. Keywords: pressure-sensitive paint, porous pressure-sensitive paint, unsteady aerodynamics, high-speed flows 1 INTRODUCTION Pressure-sensitive paint (PSP) is a relatively new measurement technique for global surface pressure measurements in aerodynamic testing.

The funda-mental operating principle of PSP is oxygen quench-ing of luminescence. In this test, PSP was applied to a first stage rotor blade of a state-of-the-art transonic compressor. The paint survived the normal operating temperature, pressure, and centrifugal forces present in this compressor at rotational speeds up to 13, RPM.

The second test investigated techniques to acquire blade surface pressure by: 6. 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 Author: Peter D.

Baumann. 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.

27th AIAA Applied Aerodynamics Conference San Antonio, Texas, USA 22 – 25 June Optimum Rotor Performance in Skewed Flow Based on Actuator-Disk Theory Visualization of Unsteady Pressure Behavior of Transonic Flutter Using Pressure-Sensitive Paint Measurement.

Paint Tool Sai on Surface Book The pen pressure doesn't work with Paint Took Sai This thread is locked. You can follow the question or vote as helpful, but you cannot reply to this thread. I have the same question () Subscribe Subscribe. B.G. McLachlan, J.H.

Bell, H. Park, et al.: Pressure–sensitive paint measurements on a supersonic high–sweep oblique wing model, J. Aircraft 32(2), – () CrossRef Google Scholar J. Holmes: Analysis of radiometric, lifetime and fluorescence lifetime imaging, Aeronautical J. – () Google Scholar. Fast-responding pressure-sensitive paint (Fast PSP) and temperature-sensitive paint (TSP) measurements were conducted on two turbocharger compressors using a single-shot lifetime-based technique.

The fast PSP and TSP were applied on separate blades of one compressor, and both paints were excited by a pulsed nm Nd:YAG laser.

The luminescent decay signals following the Cited by: 6. Rotor tip film cooling is investigated at the Large Scale Turbine Rig, which is a stage axial turbine rig operating at low speeds. Using pressure sensitive paint, the film cooling effectiveness η at a squealer-type blade tip with cylindrical pressure-side film cooling holes is obtained.

The effect of turbine inlet swirl on η is examined in comparison to an axial inflow baseline : Manuel Wilhelm, Heinz-Peter Schiffer.

If you happen to be at ISU reply back and I can measure a part for you. Ra is if you just need an idea of what the surface texture is. Your Rk Rvk and Rpk parameters will characterize it better if you want to take an hour to learn the bearing ratio curve.

Edit: every company will have their own standard. Only way to find out is to measure it. Surface Pro Pen pressure sensitivity is not working in photoshop CS6.

Was anyone able to get their surface pro to use the pen pressure sensitivity. In my photoshop settings when i turn on Pen Pressure for brush settings i see a yellow exclamation mark next to. Applications of Pressure-Sensitive Paint to Testing at Very Low Flow Speeds James H.

ell* ABSTRACT Pressure-sensitive paints (PSP) might be a useful tool for studying low speed (Ve30 m/s) flows. But the pressure field in these flows is characterized by small variations around a File Size: KB.Model Tilt-Rotor Hover Performance and Surface Pressure Measurement [Chee Tung] on *FREE* shipping on qualifying offers.1.

Introduction. Pressure-sensitive paint (PSP) is a non-contact, optical diagnostic for acquiring time-resolved surface pressure distribution [1,2,3].This sensor technology is based on capturing the quenching phenomena of the excited state luminescence of oxygen-sensitive luminophores using a high-resolution by: 3.