Last edited by Nikodal
Wednesday, August 5, 2020 | History

3 edition of A test fixture for measuring high-temperature hypersonic-engine seal performance found in the catalog.

A test fixture for measuring high-temperature hypersonic-engine seal performance

A test fixture for measuring high-temperature hypersonic-engine seal performance

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  • 19 Currently reading

Published by National Aeronautics and Space Administration, For sale by the National Technical Information Service in [Washington, DC], [Springfield, Va .
Written in English

    Subjects:
  • Aerodynamics, Hypersonic.

  • Edition Notes

    StatementBruce M. Steinetz.
    SeriesNASA technical memorandum -- 103658.
    ContributionsUnited States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15294483M

    Temperature Testing - Humidity Testing Laboratory Services. RMTS, an independent, contract humidity and temperature testing lab services, features multiple temperature and temperature/humidity chambers used for testing small to medium products or packages at specified temperature and humidity conditions for long durations or can be used to cycle between hot/cold temperatures as well as humidity. Heat seal strength test ISO (Validation requirements for forming, sealing and assembly processes), requires Performance Qualification (PQ) of packaging devices to be carried out and documented. During PQ proof must be provided after sterilization that the process is under control and produces optimally sealed or closed sterile barrier systems. Verification is being done by means of a.

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A test fixture for measuring high-temperature hypersonic-engine seal performance Download PDF EPUB FB2

A test fixture for measuring the dynamic performance of candidate high-temperature engine seal concepts has been installed at NASA Lewis Research Center. The test fixture has been designed to evaluate seal concepts under development for advanced hypersonic engines, such as those being considered for the National Aerospace Plane (HASP).

Get this from a library. A test fixture for measuring high-temperature hypersonic-engine seal performance. [Bruce M Steinetz; United States. National Aeronautics and Space Administration.].

Toward an Improved Hypersonic Engine Seal. High temperature, dynamic seals are required in advanced engines to seal the perimeters of movable engine ramps for efficient, safe operation in high. High temperature, dynamic seals are required in advanced engines to seal the perimeters of movable engine ramps for efficient, safe operation in high heat flux environments at temperatures from.

The vacuum, bubble test method, as described in Test Method D, and various other leak detection methods described elsewhere (Test Method D, Guide E, Guide E, Test Method E, Test Method E, Test Method E, and Test Method E) have been successfully used widely in various industries and applications to determine that a given package is or is not a “leaker.”.

The measurement test fixture, properly equipped and constructed, permits diode turn-on time testing with excellent time and amplitude resolution.

5 Figures through show results for five different diodes from various manufacturers. Figure (Diode Number 1) overshoots steady state forward voltage for ns, peaking mV. This is the best performance of the five. For these reasons, the test procedure should be recognized as providing only an approximate measure of installed fan performance.

Although the test procedure is based on running the fan with a motoring dynamometer, the actual installation can be used as a test fixture if an accurate torque meter is. Experior Laboratories now offers Temperature Endurance testing that complies with test standards such EN Method and is required for components in a high temperature environment.

The test method demands components to transfer from one hot environment to an even hotter one, i.e. +C to +, in no more than 10 seconds. A material with a low CS has good long-term, self-energising seal properties. A simple CS test fixture for O-rings is shown in Figure 2. Download: Download full-size image; Figure 1.

Example of low compression set and high compression set. Download: Download full-size image; Figure 2. Compression set test fixture. quantifiable measurements of heat seal quality and variables such as time of seal, pressure, and temperature of the press was established and delivered to the Sponsor.

Additionally, with the understanding of the relationship between the variables and seal quality given the proprietary parameters, possible process improvements were recommended.

Fig.1 Heatsealability Test. Failure Mode of Heat Seal Test Specimen Heat seal strength (Ultimate strength) of material is the peeling force required by per unit width of heat sealing layer (the failure modes illustrated in Figure 2a).

However, in actual testing, failure always occurs at the non-sealing area instead of the heat sealing layer. LSSD is designed for leak detection and seal strength test, including creep test and burst test in one instrument.

It can be used for measurement of heat seal edge of flexible packages that are made by heat seal and adhesive processing. Speed is related to the generated friction between the seal and the dynamic sealing surface and, therefore, affects the performance of the seal.

Low speeds will cause increased friction; high speeds will cause a breakdown in the oil film between the seal and the sealing surface, causing the seal to run dry, thus leading to premature seal failure. 4 Great High Temperature Sealing Materials.

The right type of material can make a huge difference to the performance of an industrial seal in an application. Seal manufacturers recommend the following materials for high temperature applications: PTFE: Polytetrafluoroethylene is one of.

Elevated Temperature Tensile Testing Assessing Performance With Heat & Tension. Elevated Temperature Tensile Testing is a reliable process used to evaluate the behavior of metal materials when subjected to a combination of high heat and tension. High temperature tensile testing services are performed routinely in many industries for assessing high performance steel and other metals that will.

similar seals using plain faces under less difficult conditions. Seals designed for high pressures but actually used at low pressures may have unacceptable leakage. A single contacting wet seal (1CW) sealing water at a vendor pump test ordinarily leaks a fluid that is 97 MECHANICAL SEAL PERFORMANCE AND RELATED CALCULATIONS by Tom Arnold.

Metal seals offer a wide range of design solutions for high-temperature service. Available in a wide range of sizes and materials, they can provide long-term sealing with no porosity and can withstand temperatures from oC to oC (up to oC in some specific applications) in hard vacuum to high-pressure service.

Learn about the international material testing standards for adhesives and sealants here and find out which standards apply to your products. WL-TR AD-A HIGH TEMPERATURE HYDRAULIC SEALS K.

Williams $" 2m1~ McDonnell Douglas Aerospace J Transport Aircraft Lakewood Blvd Long Beach, CA O CH Heat Seal Tester can be used to determine the optimal heat sealing parameters including dwell time, sealing pressure and sealing temperature for plastic films, flexible composite films, plastic coated paper and other heat-sealable films.

Ten (upper and lower) sealing jaws with metal surfaces; Digital P.I.D. temperature control technology. An Evaluation of High Temperature Airframe Seals for Advanced Hypersonic Vehicles High temperature seals are required for advanced hypersonic airframe applications.

In this study, both spring tube thermal barriers and innovative wafer seal systems were evaluated under relevant hypersonic test conditions (temperatures, pressures, etc.) via high temperature compression testing and room.Partner with our engineers to determine which materials can withstand the temperatures involved with your unique seal application.

The temperature range for any compound is determined by the base elastomer used. This chart depicts the maximum temperature range for each elastomer. The temperature range for a specific compound may not reach these.measuring device. If the measuring device has very high input impedance, the voltage produced by the thermo-junction can be measured accurately.

However, the main problem with thermocouple temperature measurement is that wires A and B must connect to the leads of the voltmeter, which are generally made of copper. If neither wire A nor wire B is.