Physical aspect of an "impact sensor" for the detection of cometary dust momentum onboard the "Rosetta" space mission

被引：28

作者：

Esposito, F

Colangeli, L

Della Corte, V

Palumbo, P

机构：

[1] Univ Naples Federico II, Space Sci & Engn Dept, Naples, Italy

[2] Osserv Astron Capodimonte, I-80131 Naples, Italy

[3] Ist Univ Navale, I-80133 Naples, Italy

来源：

EXPLORATION OF SMALL SOLAR SYSTEM OBJECTS: PAST, PRESENT AND FUTURE | 2002年 / 29卷 / 08期

关键词：

D O I：

10.1016/S0273-1177(02)00132-1

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The Impact Sensor (IS) is a subsystem of the GIADA experiment onboard the Rosetta space mission and is aimed at measuring the momentum of cometary grains in the range from 3.10(-11) to 3.10(-5) N.s. This sensing device is formed by an aluminium plate equipped with five piezoelectric elements, which are mounted below each corner and its center. Tests have been performed on a laboratory model of the IS, fully representative of the flight unit, to demonstrate that the performances are compatible with the design specifications and to address the dependence of the output signal on some of the most relevant parameters of impacting grains, i.e. shape, composition, momentum and position of the impact. The results reported in the present paper summarize the capabilities of such an impact momentum detector. (C) 2002 COSPAR. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：1159 / 1163

页数：5

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