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Force Limited Vibration Tests Aplied To The Forte Satellite
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Book Synopsis Force-limited Vibration Tests Aplied to the FORTE' Satellite by :
Download or read book Force-limited Vibration Tests Aplied to the FORTE' Satellite written by and published by . This book was released on 1996 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: A force limited random vibration test was conducted on a small satellite called FORTE(prime). This type of vibration test reduces the over testing that can occur in a conventional vibration test. Two vibration specifications were used in the test: The conventional base acceleration specification, and an interface force specification. The vibration level of the shaker was controlled such that neither the table acceleration nor the force transmitted to the test item exceeded its specification. The effect of limiting the shake table vibration to the force specification was to reduce (or ''notch'') the shaker acceleration near some of the satellite's resonance frequencies. This paper describes the force limited test conducted for the FORTE(prime) satellite. The satellite and its dynamic properties are discussed, and the concepts of force limiting theory are summarized. The hardware and setup of the test are then described, and the results of the force limited vibration test are discussed.
Book Synopsis Force Limited Vibration Testing Monograph by : Terry D. Scharton
Download or read book Force Limited Vibration Testing Monograph written by Terry D. Scharton and published by . This book was released on 1997 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Validation of Force Limited Vibration Testing at NASA Langley Research Center by : Chad E. Rice
Download or read book Validation of Force Limited Vibration Testing at NASA Langley Research Center written by Chad E. Rice and published by . This book was released on 2003 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721573219 Total Pages :36 pages Book Rating :4.5/5 (732 download)
Book Synopsis Validation of Force Limited Vibration Testing at NASA Langley Research Center by : National Aeronautics and Space Administration (NASA)
Download or read book Validation of Force Limited Vibration Testing at NASA Langley Research Center written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-20 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vibration tests were performed to develop and validate the forced limited vibration testing capability at the NASA Langley Research Center. The force limited vibration test technique has been utilized at the Jet Propulsion Laboratory and other NASA centers to provide more realistic vibration test environments for aerospace flight hardware. In standard random vibration tests, the payload is mounted to a rigid fixture and the interface acceleration is controlled to a specified level based on a conservative estimate of the expected flight environment. In force limited vibration tests, both the acceleration and force are controlled at the mounting interface to compensate for differences between the flexible flight mounting and rigid test fixture. This minimizes the over test at the payload natural frequencies and results in more realistic forces being transmitted at the mounting interface. Force and acceleration response data was provided by NASA Goddard Space Flight Center for a test article that was flown in 1998 on a Black Brant sounding rocket. The measured flight interface acceleration data was used as the reference acceleration spectrum. Using this acceleration spectrum, three analytical methods were used to estimate the force limits. Standard random and force limited vibration tests were performed and the results are compared with the flight data. Rice, Chad and Buehrle, Ralph D. Langley Research Center NASA/TM-2003-212404, L-18280, NAS 1.15:212404
Book Synopsis Force Limited Vibration Testing Monograph by : T. D. Scharton
Download or read book Force Limited Vibration Testing Monograph written by T. D. Scharton and published by CreateSpace. This book was released on 2014-04-15 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work described in this paper was carried out by the Jet Propulsion Laboratory, California Institute of Technology under a contact with the National Aeronautics and Space Administration. The support of the NASA Headquarters Office of Chief Engineer for the development and documentation of the force limited vibration testing technology described in this monograph is gratefully acknowledged.
Book Synopsis Benefits of Force Limiting Vibration Testing by :
Download or read book Benefits of Force Limiting Vibration Testing written by and published by . This book was released on 1999 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of a Force Specification for a Force-limited Random Vibration Test by :
Download or read book Development of a Force Specification for a Force-limited Random Vibration Test written by and published by . This book was released on 1996 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vibration testing, techniques have been developed and employed that reduce the overtesting caused by the essentially infinite mechanical impedance of the shaker in conventional vibration tests. With these ''force-limiting'' techniques, two vibration test specifications are used: the conventional acceleration specification, and an interface force specification. The vibration level of the shake table is controlled such that neither the table acceleration nor the force transmitted to the test item exceeds its specification, hence the name ''dual control'' vibration test. The effect of limiting the shake table vibration to the force specification is to reduce (''notch'') the shaker acceleration near some of the test item's resonance frequencies. Several methods of deriving the force specification have been described in the literature. A new method is proposed in this paper that is based on a modal method of coupling two dynamic systems, in this case the ''source'' or launch vehicle, and the ''load'' or payload. The only information that is required is an experimentally-measurable frequency-response function (FRF) called the dynamic mass for both the source and the load. The method, referred to as the coupled system, modal approach (CSMA) method, is summarized and compared to an existing method of determining the force specification for force-limited vibration testing.
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1998 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of the Semi-empirical Method for Force Limited Vibration Testing by : Vijayamohan Rao Dharanipathi
Download or read book Investigation of the Semi-empirical Method for Force Limited Vibration Testing written by Vijayamohan Rao Dharanipathi and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Application of the Semi-Empirical Force-Limiting Approach for the Connect Scan Testbed by : Lucas Staab
Download or read book Application of the Semi-Empirical Force-Limiting Approach for the Connect Scan Testbed written by Lucas Staab and published by BiblioGov. This book was released on 2013-06 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: The semi-empirical force-limited vibration method was developed and implemented for payload testing to limit the structural impedance mismatch (high force) that occurs during shaker vibration testing. The method has since been extended for use in analytical models. The Space Communications and Navigation Testbed (SCAN Testbed), known at NASA Glenn Research Center (GRC) as, the Communications, Navigation, and Networking re-Configurable Testbed (CoNNeCT) project utilized force-limited testing and analysis following the semi-empirical approach. This presentation presents the steps in performing a force-limited analysis and then compares the results to test data recovered during the CoNNeCT force-limited random vibration qualification test that took place at NASA Glenn Research Center (GRC) in the Structural Dynamics Laboratory (SDL) December 19, 2010 - January 7, 2011. A compilation of lessons learned and considerations for future force-limited tests is also included.
Book Synopsis Investigation of the C2 Parameter of Force Limited Vibration Testing for Multiple Degrees-of-freedom Systems by : Paul Marchand
Download or read book Investigation of the C2 Parameter of Force Limited Vibration Testing for Multiple Degrees-of-freedom Systems written by Paul Marchand and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electrical & Electronics Abstracts by :
Download or read book Electrical & Electronics Abstracts written by and published by . This book was released on 1997 with total page 1904 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Force Limited Vibration Testing Monograph Final Report... NASA-RP-1403... Oct. 7, 1997 by : United States. National Aeronautics and Space Administration
Download or read book Force Limited Vibration Testing Monograph Final Report... NASA-RP-1403... Oct. 7, 1997 written by United States. National Aeronautics and Space Administration and published by . This book was released on 1998* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781719390699 Total Pages :38 pages Book Rating :4.3/5 (96 download)
Book Synopsis Application of the Semi-Empirical Force-Limiting Approach for the CoNNeCT SCAN Testbed by : National Aeronautics and Space Administration (NASA)
Download or read book Application of the Semi-Empirical Force-Limiting Approach for the CoNNeCT SCAN Testbed written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-22 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: The semi-empirical force-limiting vibration method was developed and implemented for payload testing to limit the structural impedance mismatch (high force) that occurs during shaker vibration testing. The method has since been extended for use in analytical models. The Space Communications and Navigation Testbed (SCAN Testbed), known at NASA as, the Communications, Navigation, and Networking re-Configurable Testbed (CoNNeCT), project utilized force-limiting testing and analysis following the semi-empirical approach. This paper presents the steps in performing a force-limiting analysis and then compares the results to test data recovered during the CoNNeCT force-limiting random vibration qualification test that took place at NASA Glenn Research Center (GRC) in the Structural Dynamics Laboratory (SDL) December 19, 2010 to January 7, 2011. A compilation of lessons learned and considerations for future force-limiting tests is also included. Staab, Lucas D. and McNelis, Mark E. and Akers, James C. and Suarez, Vicente J. and Jones, Trevor M. Glenn Research Center IMPEDANCE; VIBRATION TESTS; DYNAMIC STRUCTURAL ANALYSIS; RANDOM VIBRATION; MATHEMATICAL MODELS; DYNAMIC RESPONSE; LESSONS LEARNED; SPACE COMMUNICATION; PAYLOADS; NAVIGATION
Book Synopsis Force Limited Random Vibration Testing: the Computation of the Semi-empirical Constant C2 for a Real Test Article and Unknown Supporting Structure by : Jacob Job Wijker
Download or read book Force Limited Random Vibration Testing: the Computation of the Semi-empirical Constant C2 for a Real Test Article and Unknown Supporting Structure written by Jacob Job Wijker and published by . This book was released on 2016 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of the C2 Parameter of Force Limited Vibration Testing for Multiple Degrees-of-freedom Systems by : Paul Marchand
Download or read book Investigation of the C2 Parameter of Force Limited Vibration Testing for Multiple Degrees-of-freedom Systems written by Paul Marchand and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1996-09 with total page 1244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
