详情

原文传递 Force Limited Random Vibration Test of TESS Camera Mass Model.

题名：	Force Limited Random Vibration Test of TESS Camera Mass Model.
作者：	Karlicek, A.; Hwang, J. H.; Rey, J. J.
关键词：	Vibration tests, Cameras, Satellite instruments, Models, Vibration, Planet detection, Finite element method, Statistical analysis
摘要：	The Transiting Exoplanet Survey Satellite (TESS) is a spaceborne instrument consisting of four wide field-of-view-CCD cameras dedicated to the discovery of exoplanets around the brightest stars. As part of the environmental testing campaign, force limiting was used to simulate a realistic random vibration launch environment. While the force limit vibration test method is a standard approach used at multiple institutions including Jet Propulsion Laboratory (JPL), NASA Goddard Space Flight Center (GSFC), European Space Research and Technology Center (ESTEC), and Japan Aerospace Exploration Agency (JAXA), it is still difficult to find an actual implementation process in the literature. This paper describes the step-by-step process on how the force limit method was developed and applied on the TESS camera mass model. The process description includes the design of special fixtures to mount the test article for properly installing force transducers, development of the force spectral density using the semi-empirical method, estimation of the fuzzy factor (C2) based on the mass ratio between the supporting structure and the test article, subsequent validating of the C2 factor during the vibration test, and calculation of the C.G. accelerations using the Root Mean Square (RMS) reaction force in the spectral domain and the peak reaction force in the time domain.
总页数：	Karlicek, A.; Hwang, J. H.; Rey, J. J.
报告类型：	科技报告