Last edited by Juk
Monday, October 19, 2020 | History

2 edition of Vibro-acoustics modal testing at NASA Langley Research Center found in the catalog.

Vibro-acoustics modal testing at NASA Langley Research Center

Richard S. Pappa

Vibro-acoustics modal testing at NASA Langley Research Center

by Richard S. Pappa

  • 269 Want to read
  • 6 Currently reading

Published by National Aeronautics and Space Administration, Langley Research Center, Available from NASA Center for AeroSpace Information in Hampton, VA, Hanover, Md .
Written in English

    Subjects:
  • Acoustic emission testing.,
  • Vibration tests.

  • Edition Notes

    Other titlesNASA, US Army Materiel Command
    StatementRichard S. Pappa, Jocelyn I. Pritchard, Ralph D. Buehrle.
    SeriesARL-TR -- 1980, NASA/TM -- 1999-209319, NASA technical memorandum -- 1999-209319., Army Research Laboratory technical report -- ARL-TR-1980.
    ContributionsBuehrle, Ralph D., Pritchard, Jocelyn I., Langley Research Center., United States. National Aeronautics and Space Administration., U.S. Army Research Laboratory., United States. Army Materiel Command., Vehicle Technology Center (U.S. Army Research Laboratory)
    The Physical Object
    Pagination13 p. :
    Number of Pages13
    ID Numbers
    Open LibraryOL20330227M

    The NASA Langley Research Center Curved Duct Test Rig (CDTR) is designed to test aircraft engine nacelle liner samples in an environment approximating that of the engine on a scale that approaches the full scale dimensions of the aft bypass duct. Aerospace Engineer NASA Langley Research Center Oktober – Dezember 5 Jahre 3 Monate. Hampton, VA. Aerospace engineer in the loads and dynamics group. A Title: Aerospace Engineer at NASA .

    To explore and evaluate noise-reduction techniques, researchers at NASA Langley Research Center are analyzing novel aircraft designs, such as the Hybrid Wing Body (HWB). The engineers use MATLAB ® and Parallel Computing Toolbox™ to accelerate the processing of acoustic data on NVIDIA GPUs. The NASA Langley Research Center (LaRC) Flight Simulation Facilities consist of the Cockpit Motion Facility (CMF), Development and Test Simulator (DTS), Test and Evaluation Simulator (TES), Uninhabited Aircraft Systems (UAS) Integration and Validation Laboratory (SIVL), System Integration Laboratories (SIL), and Research Collaboration Facility.

    NASA s Aeronautics Test Program The Langley Aerothermodynamics Laboratory (LAL) is a suite of three hypersonic blow-down to-vacuum tunnels designed for fast-paced aerodynamic and aeroheating studies. These economical facilities are ideally suited for screening, assessing, optimizing and benchmarking advanced aerospace vehicle concepts, as well. DALLAS, Nov. 21, /PRNewswire/ -- Jacobs Engineering Group Inc. (NYSE:JEC) was awarded an extension to the Center Maintenance, Operations and Engineering contract at NASA's Langley Research.


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Vibro-acoustics modal testing at NASA Langley Research Center by Richard S. Pappa Download PDF EPUB FB2

NASA/TM ARL-TR Vibro-Acoustics Modal Testing at NASA Langley Research Center • Richard S. Pappa Langley Research Center, Hampton, Virginia Jocelyn I.

Pritchard U.S. Army Research Laboratory Vehicle Technology Directorate Langley Research Center, Hampton, Virginia Ralph D. Buehrle Langley Research Center, Hampton, VirginiaFile Size: KB. Vibro-Acoustics Modal Testing at NASA Langley Research Center Richard S.

Pappa and Jocelyn I. Pritchard Structural Dynamics Branch NASA Langley Research Center Hampton, VA Ralph D. Buehrle Structural Acoustics Branch NASA Langley Research Center Hampton, VA ABSTRACT. This paper summarizes on-going modal testing activities at the NASA Langley Research Center for two aircraft fuselage structures: a generic "aluminum testbed cylinder" (ATC) and a Beechcraft.

This paper summarizes on-going modal testing activities at the NASA Langley Research Center for two aircraft fuselage structures: a generic ''aluminum testbed cylinder'' (ATC) and a Beechcraft Starship fuselage (BSF). Subsequent acoustic tests will measure the interior noise field created by exterior mechanical and acoustic sources.

This paper summarizes on-going modal testing activities at the NASA Langley Research Center for two aircraft fuselage structures: a generic "aluminum testbed cylinder" (ATC) and a Beechcraft Starship fuselage (BSF).

Subsequent acoustic tests will measure the interior noise field created by exterior mechanical and acoustic sources. Get this from a library. Vibro-acoustics modal testing at NASA Langley Research Center. [Richard S Pappa; Jocelyn I Pritchard; Ralph D Buehrle; Langley Research Center.].

Langley Research Center Hampton, Virginia May NASA/TM ARL-TR Vibro-Acoustics Modal Testing at NASA Langley Research Center Richard S. Pappa Langley Research Center, Hampton, Virginia Jocelyn I. Pritchard U.S. Army Research Laboratory Vehicle Technology Directorate Langley Research Center, Hampton, Virginia Ralph.

The Aeroacoustics Branch located at the NASA Langley Research Center (LaRC), is one branch within the NASA Langley Research Directorate. The Aeroacoustics Branch plans and conducts research aimed at understanding and accurately predicting the noise from any air vehicle configuration as well as defining and demonstrating concepts for air vehicle noise reduction.

brings you the latest images, videos and news from America's space agency. Get the latest updates on NASA missions, watch NASA TV live, and learn about our quest to reveal the unknown and benefit all humankind.

By Richard Pappa Langley, Jocelyn I. Pritchard and Ralph D. Buehrle Abstract This paper summarizes on-going modal testing activities at the NASA Langley Research Center for two aircraft fuselage structures: a generic "aluminum testbed cylinder" (ATC) and.

The FAA recently gave researchers at NASA Langley the green light to fly drones at a test range on the center. The NASA Langley Research Center Curved Duct Test Rig (CDTR) is designed to test aircraft engine nacelle liner samples in an environment approximating that of the engine on a scale that approaches the full scale dimensions of the aft bypass duct.

The modal content of the sound in the duct can be determined and the modal content of the sound. Richard S. Pappa. NASA Characterisation and tracking of membrane surfaces at NASA Langley Research Centre.

Vibro-Acoustics Modal Testing at NASA Langley Research Center. The Structural Acoustics Branch is housed in the Acoustics Research Laboratory (ARL) at NASA Langley Research Center. Facilities in the ARL are used to conduct acoustic studies of aircraft components and models and to conduct subjective acoustic studies involving human test subjects.

Full text of "Comparison of Modal Analysis Methods Applied to a Vibro-Acoustic Test Article" See other formats COMPARISON OF MODAL ANALYSIS METHODS APPLIED TO A VIBRO-ACOUSTIC TEST ARTICLE Jocelyn Pritchard Research Engineer Structural Dynamics Branch NASA Langley Research Center Hampton, VA Ralph Buehrle Senior Research Engineer Structural Acoustics Branch NASA Langley Research Center.

The Langley Research Center Telecommunications System (LaTS) is an on-premise digital telephone system manufactured by ROLM, Inc., and managed and maintained by the Communications and Computer Systems Branch (CCSB), Information Systems and Services Division (ISSD).

at the University of western Australia in Perth. From he is working as a research professor at the Institute of Acoustics, Chinese Academy of Sciences.

His main interests include vibro-acoustics, fluid induced noise, duct acoustics, active noise control, smart acoustic materials and structures. NASA Langley Research Center has developed a point sensor and piezoelectric actuator system to actively sense and reduce vibrations in flexible structures.

Miniature accelerometers sense vibration. Researchers at NASA’s Langley Research Center in Hampton, Virginia have developed an enhanced version of their original compact vibration damper. This damper is remotely adjustable with self-tuning capabilities being developed.

ACOUSTICAL TESTING LABORATORY: The Acoustical Testing Laboratory was used to evaluate the performance of mufflers for the air turbines used to drive engine simulators at Glenn Research Center. A room without walls: When you want to listen to something carefully, what do you do.

You turn off other noisy things, close the door and listen closely. WE ARE PIONEERS IN HVAC ACOUSTICS AND AERODYNAMICS Our aero-acoustic testing laboratory has been evolving since the early ’s.

The 4 th generation aero-acoustic laboratory was the world’s first NVLAP accredited (Lab Code ) laboratory for the testing of silencers. Today, Vibro-Acoustics is maintaining industry leadership with a 5th generation NVLAP accredited (Lab Code .En-route sonic boom (current research focus) Airport noise: fixed wing and rotorcraft; Facility Document.

Overview of an indoor sonic boom simulator at NASA Langley Research Center. Contact. Jacob Klos (@) Alexandra Loubeau ([email protected]) Jonathan Rathsam ([email protected]).RD develops and delivers high quality test data to meet the current and future needs of the Agency Aeronautics Research, Exploration Systems, Space Operations, Office of the Chief Technologist, Office of the Chief Engineer, and Science mission customers and the national research and engineering community through stewardship of ground testing.