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Scientific paper
Dec 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..456...24w&link_type=abstract
The second international laser interferometer space antenna symposium (LISA) on the detection and observation of gravitational w
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1
Gravitational Wave Detectors And Experiments, Gravitational Radiation Detectors, Mass Spectrometers, And Other Instrumentation And Techniques
Scientific paper
A CAD representation of the LISA payload has been developed and a finite element analysis conducted. The design closely follows the configurations developed by the science working teams, with independent pointing adjustment of the two telescopes. However, the accommodation of certain systems boxes needs further thought, with perhaps a reduction in unit sizes or transfer to a position on the Spacecraft main structure. Initial modal analysis has given an eigenfrequency for the payload of 50 Hz in the launch configuration. This is encouraging for a later design stage, when analysis of the combined Spacecraft and Payload is conducted, and consideration given to the dynamic characteristics of the multi-spacecraft stack. The principle adopted in the design is to restrain the payload for launch (with the pointing adjustment actuators carrying no load) and to remove the restraints after the spacecraft has been deployed. The finite element model has been linked with thermal modelling data, enabling sensitivity to temperatures to be assessed.
Sandford Michael C. W.
Turner Raymond F.
Whalley Martin S.
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