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Monday, August 10, 2020 | History

2 edition of Visualization of in-flight flow phenomena using infrared thermography found in the catalog.

Visualization of in-flight flow phenomena using infrared thermography

Visualization of in-flight flow phenomena using infrared thermography

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  • 35 Currently reading

Published by National Aeronautics and Space Administration, Dryden Flight Research Center, Available from NASA Center for AeroSpace Information (CASI) in Edwards, Calif, Hanover, MD .
Written in English

    Subjects:
  • Flow visualization.,
  • Boundary layer transition.,
  • Fluid flow.

  • Edition Notes

    StatementD.W. Banks ... [et al.].
    SeriesNASA/TM -- 2000-209027., NASA technical memorandum -- 209027.
    ContributionsNASA Dryden Flight Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18174769M

    The methods for measuring thermal flux in models are also discussed, the emphasis being on IR thermography. The book will be of interest to specialists in the hypersonic domain as well as to those involved with wind tunnel testing since it reveals all the possibilities associated with the most up to date techniques of aerodynamic investigation.   I enjoy developing optical remote sensing systems and applying them to understanding the natural world. Photographing and understanding natural optical phenomena is another of my passions (see examples in my book, Optics in the Air). I am a Fellow of SPIE and the OSA.

    Instead of using laser emitters we use Infrared LED technology. This brings a number of important benefits. Eye-safety: TeraRanger sensors remain eye-safe in all conditions, with no need for Laser Class 1 safety precautions! Field-of-View: Rather than measuring a very small point, we can allow the emitted light to spread and form a Field-of-View. processes these variables, based on the knowledge base and the materials in the database. Thus, this method helps a user to select the material for a given problem using a flow chart. The use of KBSs for materials selection was reported for selecting materials of polymeric-based composites [ ].

    3. Surface Oil Flow Visualization Advantages/Disadvantages • • • • Examples (b) 50 c.c. Land Speed Record Vehicle Model Wind Tunnel Oil Flow Visualization (Sideslip Angle, β = 12°). Variation: use of dark pigment (not TiO2) Photo courtesy of Eugene Heim. Transcription. Published papers on Thermology or Temperature Measurement.


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Visualization of in-flight flow phenomena using infrared thermography Download PDF EPUB FB2

The use of infrared (IR) thermography to visualize certain flow phenomena is not new. Infrared technology has been employed in wind tunnels [1] and in flight at subsonic to hypersonic conditions with both local (that is, when the camera and subject surface are on one.

Visualization of in-flight flow phenomena using infrared thermography 11 p. (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors: NASA Dryden Flight Research Center.

OCLC Number: Notes: Shipping list no.: M. Reproduction Notes: Microfiche. Visualization of In-Flight Flow Phenomena Using Infrared Thermography D. Banks,1 C. van Dam,2 H. Shiu,3 and G. Miller4 Keywords: Infrared thermography, boundary layer transition, shock waves, supersonic flow ABSTRACT Infrared thermography was used to obtain data on the state of the boundary layer of aCited by: Download Citation | Visualization of In-Flight Flow Phenomena Using Infrared Thermography | Infrared thermography was used to obtain data on the state of the boundary layer of a natural laminar.

In-Flight Flow Visualization Using Infrared Thermography. By C. vanDam, Depending on the in-flight distance between the F and the target aircraft, the thermograms can have a spatial resolution of as little as inches. future flight tests will also concentrate on the visualization of other flow phenomena such as flow separation Author: C.

vanDam, Banks D. and H. Shiu. For this purpose, the capability of flow separation visualization using infrared (IR) thermographic flow visualization is investigated. A thermographic measurement has the potential to deliver the similar information as the invasive methods, but is non-invasive, reaction-less and faster (no preparation of the rotor blade).

Infrared thermography has been used as a visualization technique for more than two decades in both in-flight and wind-tunnel experiments [1]. Unfortunately, it has not expanded and traditional techniques as smoke-wire or oil-flow visualization are preferably used.

This trend is usually observed given that the high-sensitivity infrared systems have. We use cookies to offer you a better experience, personalize content, tailor advertising, provide social media features, and better understand the use of our services.

In-Flight Flow Visualization Results from High Angle of Attack Tests on a Forward Swept Wing Aircraft with Comparisons to Water Tunnel Results. Visualization of Flow Phenomena in and Around a Savonius Rotor.

Flow Visualization and Heat Transfer Measurements by Infrared Thermography. The investigation is performed for a rotational speed range from 0 to rpm using two different coatings displaying red at 30° and 45°C, under stationary conditions.

Local liquid crystal color on the surface of a rotating disk is correlated with local temperature as measured by a non-intrusive infrared sensor at various rotational speeds. M.F. Westby: Heat transfer measurements using infrared thermography in rarefied flows, Technical Memorandum W1 (Defense Research Agency, Farnborough ) Google Scholar M.

Martiny, R. Schiele, M. Gritsch, A. Schulz, S. Wittig: In situ calibration for quantitative infrared thermography, QIRT ʼ96, Stuttgart, Eurotherm Semi 3–8. Flow Visualization VI: Proceedings of the Sixth International Symposium on Flow Visualization, October 5 – 9,Yokohama, Japan Ching-Jen Chen, Luke J.

Chen, You-Gon Kim (auth.), Prof. Yoshimichi Tanida, Prof. Hiroshi Miyashiro (eds.). Dynamics of aircraft cabin ventilation studied by in-flight infrared thermography by T. Dehne*1), J. Bosbach* and A. Heider* *German Aerospace Center (DLR), Institute of Aerodynamics and Flow Technology, Bunsenstra D Göttingen, Germany, 1)e-mail: @ Abstract Aircraft Cabin Displacement Ventilation (CDV) was investigated during flight tests in an A aircraft.

Dehne T., Bosbach J., Heider A. () In-Flight Infrared Thermography for Studies of Aircraft Cabin Ventilation. In: Rossi M. et al. (eds) Residual Stress, Thermomechanics & Infrared Imaging, Hybrid Techniques and Inverse Problems, Volume 8.

Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. 2 INFRARED THERMOGRAPHY The use of IRT for transition detection Laminar-to-turbulent boundary-layer transition is very sensitive to environmental disturbances. For this reason, when transition-detection is the main goal of an experimental study, particular attention should be paid in order to use a non-intrusive measurement technique.

IRT is. Flow visualization was performed with established methods utilizing ink dots and solvent, and oil and black powder. The flow features captured using these techniques include the horseshoe vortex and its migration across the passage to impinge on the neighbouring blade, endwall cross flow.

The use of infrared thermography in the inspection of composites. Infrared thermography is a discipline which relies on physical principles, theoretical basis, and practical to represent the surface temperature map of the viewed scene.

Essentially, it includes an infrared detecting device to sense the thermal energy that is radiated from. Knowledge about laminar–turbulent transition on operating multi megawatt wind turbine (WT) blades needs sophisticated equipment like hot films or microphone arrays.

Contrarily, thermographic pictures can easily be taken from the ground, and temperature differences indicate different states of the boundary layer. Accuracy, however, is still an open question, so that an aerodynamic glove. Convective heat flow 12 Infrared in the electromagnetic spectrum 13 Radiative heat flow 13 Radiation impinging on a surface 14 Three sets of characteristics in making IR measurements 17 Blackbody curves at various temperatures 17 Spectral distributions of a blackbody, graybody, and non-graybody 19 Components of.

In-flight flow experimentation using infrared imaging is a valuable tool to analyze the flow and temperature characteristics of flight vehicles. In particular, mapping of the infrared images into global temperatures and validation of this technique would provide order of magnitude improvements to the infrared thermography process.

Infrared thermography has been used for the nondestructive testing (NDT) of aerospace components for several years now [1]. The main advantage of thermography over classical NDT techniques resides in the possibility of inspecting large areas in a fast and safe manner without needing to have access to both sides of the component.

KEYWORDS: Thermography, Infrared imaging, Diamond, Reflection, Imaging systems, Image processing, Infrared radiation, Infrared signatures, Defense technologies, Halogens Read Abstract + Thermal signature may be one of the defining factors in determining the applicability of fuel cell auxiliary power unit (APU) technology in military applications.Infrared Thermography characterization of Görtler vortex type patterns in hypersonic flows.- Session 7: Recommendations for Future Research by the Rapporteurs.- to session 7: Recommendations for future research in hypersonic instrumentation.- Flow visualization, interferometry and spectroscopy in hypersonic flows: a review.- Local measurements.