Measuring and testing – Specimen model or analog
Patent
1992-06-22
1995-01-10
Noland, Tom
Measuring and testing
Specimen model or analog
248329, 248648, G01M 1900, B66F 1100
Patent
active
053796578
ABSTRACT:
A method and system for supporting a test article or structure in a gravity environment for the purpose of testing the article in a simulated weightless condition includes at least one support assembly attached to the article for suspending the article from an overhead support. The support assembly includes three cables each having an end attached to the article. The cables are capable of being actuated to cooperatively maintain a constant resultant vertical force on the test article which is equal to the weight of the article. The system includes a controller which is capable of adjusting the force in each cable to continuously maintain the constant resultant force on the article as it moves from position to position. The controller can calculate the new position of the test article as it moves from position to position. The controller is able to calculate each new position, calculate the forces necessary to maintain the constant resultant force on the test article, and actuate the cables to develop the required cable forces needed to offset the weight of the test article as the test article moves from position to position. The system can also use a plurality of such support assemblies to handle large size test structures.
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Sparta, Inc. and Engineering Mechanics, Associates, Inc., Proposal to Design, Develop and Demonstrate Microgravity Suspension System, May 17, 1988 including cover page, pp. i-ii, 1-61,69, Appendix D cover page, & pp. d1-D4.
Hasselman Timothy K.
Quartararo Richard
Hasselman Timothy K.
Noland Tom
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