Simulation of a critical task of the LISA release mechanism: the injection of the Test Mass into geodesic

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.



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: 
Zanoni, Carlo
Bortoluzzi, Daniele
Conklin, John
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)

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