Engineering topics
Publications and source records attributed to Scharton, T..
The primary objective of the random vibration test was to identify any hardware problems, which might compromise the mission. The test objectives, configuration, and requirements are briefly described in this presentation, and a representative sample of the measured data is presented.
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The random vibration forces between a payload and the sidewall of the space shuttle have been measured in flight and compared with the force specifications used in ground vibration tests. The flight data are in agreement with a semi-empirical method, which is widely used to predict vibration test force limits.
Unique spacecraft dynamics qualification methodologies have been developed at the Jet Propulsion Laboratory in recent years in response to NASA's faster/better/cheaper initiative.
A direct acoustic test was perfomed on the QuikSCAT spacecraft at Ball Aerospace Technology Corporation (BATC) in Boulder, Colorado, in October 1998. The QuikSCAT spacecraft was designed and built by BATC in an accelerated, one-year, program managed by the NASA Goddard Space Flight Center.
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Combining the quasi-static loads, workmanship verification, and model validation tests of aerospace hardware into a single vibration test sequence can considerably reduce schedule and cost.
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In-flight measurements of the dynamic forces acting between an aerospace component and it's supporting structure have recently been obtained in two flight programs.
In-flight measurements of the dynamic forces acting between an aerospace component and its supporting structure have recently been obtained on the Advanced Composition Explorer (ACE) spacecraft.
The topics are presented in viewgraph form and include: a vibroacoustic payload environment prediction system (VAPEPS); objectives of the JPL space station analysis effort; statistical energy analysis (SEA); VAPEPS Space Station Freedom (SSF) model description; noise control treatments; and SSF microgravity preliminary analysis results.