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Showing 1 to 7 of 7 for “"torsion pendulum"”.
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Torsion Pendulum Testing of the LISA Charge Management System
… campaign, namely the four-test-masses torsion pendulum at the University of Trento. We also present the electrostatic model and the measurement techniques used to evaluate the electric charge on the pendulum test mass. In the third chapter, we introduce the concept of apparent yield, …
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A torsion pendulum ground test of the LISA Pathfinder Free-fall mode
… present the results from an extensive on-ground torsion pendulum test of this free-fall technique, which to date allows an equivalent acceleration noise measurement at the 100 fm/s^2/sqrt(Hz), a factor 3 above the LISA Pathfinder spec. We will discuss both experimental and analysis limitations to …
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Free-fall of LISA Test Masses: a new torsion pendulum to test translational acceleration
… and commissioning of dedicated facilities. The torsion pendulum currently used by the Trento LISA group has demonstrated the possibility to effectively characterize the GRS and place relevant upper limits on the GRS-related force disturbance. Nevertheless, torsion pendulums used so far have some …
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Development and Initial Testing of a Micro-Newton Torsion Pendulum with Gas-Dynamic Calibration
A novel torsion pendulum thrust test stand for micro-Newton-scale spacecraft thrusters is described. The stand is designed to be robust against electromagnetic interference effects internal or external to the thruster being tested. The design and testing of a gas-dynamic calibration thruster is …
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Processing - Structure - Property Relationships in Catalyst Cured Epoxy Systems (Morphology)
… discharge (TSD) analysis, free oscillation torsion pendulum, differential scanning calorimetry (DSC), tensile mechanical test, and transmission electron microscopy (TEM) were employed in the investigation.
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Performance of the electrostatic control force system for LISA Test Masses: experimental results from LISA Pathfinder and new on-ground measurements
… measuring actuation-related forces with the 1TM torsion pendulum, which was re-activated after a shut-down of seven years and updated in many aspects. It was then used for two measurement campaigns. The first was a demonstration that the instrument has the capability of measuring torque noise …
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Structure and Property of Polybutylene, Polypropylene and Polyvinylidene Fluoride Crystallized From the Glassy State and Structure-Property - Processing Relationships of Polypropylene - Polybutylene Blends
… respectively. X-ray diffraction, DSC and torsion pendulum show PB crystallizes from the glass at T(,g)(U).