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A microgravity isolation mountThe design and preliminary testing of a system for isolating microgravity sensitive payloads from spacecraft vibrational and impulsive disturbances is discussed. The Microgravity Isolation Mount (MGIM) concept consists of a platform which floats almost freely within a limited volume inside the spacecraft, but which is constrained to follow the spacecraft in the long term by means of very weak springs. The springs are realized magnetically and form part of a six degree of freedom active magnetic suspension system. The latter operates without any physical contact between the spacecraft and the platform itself. Power and data transfer is also performed by contactless means. Specifications are given for the expected level of input disturbances and the tolerable level of platform acceleration. The structural configuration of the mount is discussed and the design of the principal elements, i.e., actuators, sensors, control loops and power/data transfer devices are described. Finally, the construction of a hardware model that is being used to verify the predicted performance of the MGIM is described.
Document ID
19870020428
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Jones, D. I. (University Coll. of North Wales Bangor, United Kingdom)
Owens, A. R. (University Coll. of North Wales Bangor, United Kingdom)
Owen, R. G. (University Coll. of North Wales Bangor, United Kingdom)
Roberts, G. (University Coll. of North Wales Bangor, United Kingdom)
Wyn-Roberts, D. W. (University Coll. of North Wales Bangor, United Kingdom)
Robinson, A. A. (European Space Agency. European Space Research and Technology Center ESTEC, Noordwijk, Netherlands)
Date Acquired
September 5, 2013
Publication Date
May 1, 1987
Publication Information
Publication: NASA-Lyndon B. Johnson Space Center, The 21st Aerospace Mechanisms Symposium 35-54 (SEE N87-29858 24-39)
Subject Category
Mechanical Engineering
Accession Number
87N29861
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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