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Wednesday, July 29, 2020 | History

3 edition of Transient hot-film sensor response in a shock tube found in the catalog.

Transient hot-film sensor response in a shock tube

Transient hot-film sensor response in a shock tube

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Published by National Aeronautics and Space Administration, Langley Research Center, National Technical Information Service, distributor in Hampton, Va, [Springfield, Va .
Written in English

    Subjects:
  • Convective heat transfer.,
  • Flow measurement.,
  • Heat transfer coefficients.,
  • Hot-film anemometers.,
  • Shock tubes.,
  • Transient response.

  • Edition Notes

    Other titlesTransient hot film sensor response ...
    StatementA.S. Roberts, Jr., K.R. Ortgies, and E. Gartenberg.
    SeriesNASA contractor report -- 181838., NASA contractor report -- NASA CR-181838.
    ContributionsOrtgies, K. R., Gartenberg, Ehud., Langley Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18078970M

    The convection of heat from the sensor is measured by monitoring changes in the temperature-dependent resistance of the sensing element that, to first-order, is approximated by (9) R s =R r [1+α(T s −T r)], where R s is the sensor resistance, T s is the sensor temperature, T r is a reference temperature corresponding to a sensor reference Cited by:   Martin Liess, Alain Charlebois, Martin Hausner, Henrik Ernst, Hermann Karagözoglu, and Jürgen Schilz "Stabilization of the output signal of thermopile sensors in the thermal environment of automotive applications", Proc. SPIE , Photonic Applications for Aerospace, Transportation, and Harsh Environments, K (10 October ); https Cited by: 3.

    Visualization. Velocity magnitude from pilot static tube. Velocity direction from yaw tube, dynamic wind vector indicator. Hot-film shock-tube velocity sensor. Laser Doppler anemo-meter; gross volume flow rate: calibration and standards. Constant-area, variable-pressure-drop meters (obstruction meters). Averaging pitot tubes. magnitude from pilot static tube. Velocity direction from yaw tube, pivoted vane, servoed sphere, dynamic wind vector indicator. Hot wire and hot film anemometer. Hot-film shock-tube velocity sensor. Laser Doppler anemo-meter; gross volume flow rate: calibration and standards.. Metering pumps. Electromagnetic flow meters. MODULE V.

    “A Simple Calculation Procedure for Transient Heat and Mass Transfer with Phase Change: Moist Air Example.” Chap in Handbook of Heat Transfer Calculations, Kutz, M. (Editor), McGraw-Hill, New York, , pp. Many craters on Mars are partially filled by distinctive material emplaced by post-impact processes. This crater fill material is an interior mound which is generally separated from the walls of the crater by a trough that may be continuous along the crater circumference (i.e. a ring-shaped trough), or which may only partially contact the crater walls (i.e. a crescent-shaped trough).


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Transient hot-film sensor response in a shock tube Download PDF EPUB FB2

Transient Hot-Film Sensor Response in a Shock Tube [NASA-CR-t) ThANS/INT HOT-FILM SENSOR BESPONSE IN _ SHOCK TUBE Final Report, - 'Old Dominion Univ.) 83 p CSCL 14E G3/35 N Unclas UE45 A.S.

Roberts, Jr., K.R. Ortgies, and E. Gartenberg Old Dominion University Research Foundation Norfolk, Virginia Contract NAG1. Get this from a library. Transient hot-film sensor response in a shock tube. [A S Roberts; K R Ortgies; Ehud Gartenberg; Langley Research Center.].

Napolitano on Roger Stone case: 'Only a pardon can fairly undo this mess' - Duration: Fox News Recommended for you. New. The Atomic Layer Thermopile is a novel fast-response sensor for transient heat-flux measurements.

The sensor’s very fast frequency response allows for highly-time-resolved heat-flux measurements. In addition, a finite-difference model of the transient behavior of the heat flux sensor is presented to demonstrate the first-order response to a step input in heat flux. Results are compared with shock passing data from the shock tunnel.

The Heat Flux Microsensor recorded the heat flux response with an estimated time constant of 6 μs, which Cited by: Roberts et al. [19] used a shock tube to study the transient response of a wall-mounted thin film sensor.

Direct measurements of transient heat transfer were carried out in a shock tunnel for. In this paper, we present a novel micromachined hot-film flow sensor system realized by a technique using a film depositing processes and incorporating a standard printed circuit.

Sensor electrodes and electronic circuits are preprinted on a flexible substrate of polyimide (PI), i.e., a flexible printed circuit board (FPCB). The sensing element, which is made of Cr/Ni/Pt with a temperature Cited by: Hot-film anemometry can measure viscous effects like shear stress. This same method can also be used to characterize viscous phenomena such as transition, flow separation and reattachment, turbulence, and shock impingement.

Hot-film sensors are also nonintrusive and can be installed on bodies without major structural changes. The Intake Air Temperature (IAT) sensor is a part of Hot Film Air Mass (HFM) sensor and is a thermistor, a resistor which changes value based on the temperature of the air entering the engine.

Low temperature produces a high resistance, while high temperature causes a low resistance as the following Size: KB. Electrical testing was performed using both sine and square waves. Flow testing was performed in a shock tube by subjecting the flush-mounted sensors to a shock-induced boundary layer.

As the sensor size was decreased, frequency response increased and sensitivity decreased. These trends were observed for both electronic and flow testing by: Velocity Magnitude from Pitot-Static Tube Velocity Direction from Yaw Tube, Pivoted Vane, and Servoed Sphere Dynamic Wind-Vector Indicator Hot-Wire and Hot-Film Anemometers Hot-Film Shock-Tube Velocity Sensors Laser Doppler Anemometer Gross Volume Flow Rate Calibration and Standards Price: $ static tube.

Velocity direction from yaw tube, dynamic wind vector indicator. Hot-film shock-tube velocity sensor. Laser Doppler anemo-meter; gross volume flow rate: calibration and standards. Constant-area, variable-pressure-drop meters (obstruction meters). Averaging pitot tubes.

Description: Measurement Systems: Application and Design provides a breadth/depth of coverage not found elsewhere. This allows easy selection of topics to meet local needs for beginning or advanced courses, and continued value for industrial practice.

This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. Hot film sensor for air flow meter. United States Patent a hot film sensor disposed in the tube comprising: is exposed on only one side to the air flow and it is thermally coupled to the walls of the passage which slows the response to the sensor to changes of mass air flow and detracts from its sensitivity.

A pitot tube uses two tubes or split tubes to measure a differential pressure. The first tube measures the static pressure and is usually mounted into the pipe wall (Fig.

The figure illustrates how the pitot-static tube, or Prandtl tube, functions. The second or central tube measures the impact pressure. here is a company which manufactures hot-film air-mass meters which operate at up to 8 bar pressure @ 4, kg/h (the mm tube version).

They only have an operating temp of up to 80C, however, despite the sensor being mounted in an aluminium tube. As for cheftrd's question about why people ditch the MAF's - I don't know, it's not my field.

A review of heat transfer and skin friction measurement methods is presented with particular emphasis on techniques that yield details of time-resolved properties.

A description of the calibration Cited by: MEMS Flow Sensors Based on Self-Heated aGe-Thermistors in a Wheatstone Bridge. The response of a calorimetric flow sensor depends basically on the geometrical parameters of the design, during the subsequent through-wafer etching process, or for transient flow studies based on tube shock by: Transducers, Sensors & Displays Systems (TIC)Unit Topic Text Book/ Lectures.

Cengel fluid mechanics 6 ; Cengel fluid mechanics 6 | Author: Leandro Cavalheiro (Hot-Wire and Hot-Film) Anemometers Laser Doppler Velocimetry Particle Image Velocimetry 12–5 Shock Waves and Expansion Waves Normal Shocks Oblique Shocks Prandtl–Meyer Expansion Waves."Velocity Magnitude from Pitot-Statie Tube.

‘Velocity Direction from Yaw Tube, Pivoted Vane, and Servoed Sphere. Dynamic Wind-Vector Indicator. Hot-Wire and Hot- Film Anemometers. Hot-Film Shock-Tube Velocity Sensors Laser Doppler Velocimeter. Gross Volume Flow Rate Calibration and Standards. Constant-Area, Variable-Pressure-Drop.4/5(15).

Btec instrumentation control Hot-film shock-tube velocity sensor. Laser Doppler anemo-meter; gross volume flow rate: calibration and standards. Constant-area, variable-pressure-drop meters (obstruction meters). Transient response of a Prototype second order system IV Stability of Linear Control Systems: Introduction, Bounded- to