In LISA Pathfinder, the injection of the test mass (TM) into a geodesic or- bit represents a possible single-point failure of the whole mission. In this critical phase the Grabbing, Positioning and Release Mechanism (GPRM) releases the test mass from the caged condition to free-fall by means of a fast retraction of two opposite tips. A momentum transfer from the tips to the TM occurs due to adhesive bonds and possible asymmetry of the system. Since the electrostatic control authority is limited, the re- leased TM may be captured only if its residual velocity after release is below 5 μm/s. A combined experimental-analytical strategy has been conceived to test this phase. The compliance of the resulting injection with the requirements is here presented and dis- cussed.
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Titolo: | Simulation of a critical task of the LISA release mechanism: the injection of the Test Mass into geodesic |
Autori: | Zanoni, Carlo; Bortoluzzi, Daniele; Conklin, John |
Autori Unitn: | |
Autore/i del libro: | Gerard Auger, Pierre Binétruy, Eric Plagnol |
Titolo del volume contenente il saggio: | The 9th LISA Symposium |
Luogo di edizione: | San Francisco |
Casa editrice: | ASTRONOMICAL SOC PACIFIC, 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA |
Anno di pubblicazione: | 2012 |
Codice identificativo ISI: | WOS:000316716900053 |
ISBN: | 9781583818169 9781583818176 |
Handle: | http://hdl.handle.net/11572/94120 |
Appare nelle tipologie: | 04.1 Saggio in atti di convegno (Paper in proceedings) |