Engineering topics
Siebes, G.
Publications and source records attributed to Siebes, G..
Review and Assessment of JPL's Thermal Margins
JPL has captured its experience from over four decades of robotic space exploration into a set of design rules. These rules have gradually changed into explicit requirements and are now formally implemented and verified. Over an extended period of time, the initial understanding of intent and rationale for these rules has faded and rules are now frequently applied without further consideration. In the meantime, mission classes and their associated risk postures have evolved, coupled with resource constraints and growing design diversity, bringing into question the current "one size fits all" thermal margin approach. This paper offers a systematic review of the heat flow path from an electronic junction to the eventual heat rejection to space. This includes the identification of different regimes along this path and the associated requirements. The work resulted in a renewed understanding of the intent behind JPL requirements for hot thermal margins and a framework for relevant considerations, which in turn enables better decision making when a deviation to these requirements is considered.
Testing thermal geometric model exchanges with STEP-TAS
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Testing thermal geometric model exchanges with STEP-TAS
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The U.S. STEP-TAS pilot
In January 2000, the STEP for Aerospace Workshop at JPL brought together representatives from the standards developer, tool vendors and user community. It served as the catalyst for further STEP implementation activities in NASA. The most mature of these activities is the US STEP-TAS pilot. The current status of this pilot and future plans are reported in this paper.
Thermal Analysis Data Exchange in the Space Industry
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Thermal Analysis Data Exchange in the Space Industry
The engineering of spacecraft and other space-related equipment requires extensive computer-aided design, analysis and test work - this goes for all disciplines and cetainly also for thermal control engineering.
QuickScat Lessons Learned
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Thermal Analysis Data Exchange Between ESA and NASA with Step
Two years ago at ICES 97, a paper was presented describing the status of two companion open standards for electronic exchange and archival of space engineering data based on STEP (ISO-10303) technology. This paper presents background information on STEP and demonstrate the thermal model exchange between ESA and NASA.
Integrating Thermal Tools Into the Mechanical Design Process
The intent of mechanical design is to deliver a hardware product that meets or exceeds customer expectations, while reducing cycle time and cost.
Experience With an Imaging Infrared Radiometer in a Simulated Space Environment
A commercially available imaging infrared radiometer, an Inframetrics 760 system, was subjected to simulated space and Martian environments in JPL's 25ft space simulators for a total of 108 hours.
Utilization fo the Satellite Test Assistant Robot (STAR) for Visual and Thermal Analysis for Articles in the Thermal Vacuum Test Environment
An innovative new telerobotic inspection system called STAR has been developed to asist engineers in the visual and thermal analysis fo flight hardware being tested in a simulated space environment. This paper describes the architecture of the STAR mechanical and control systems and discusses some uses of STAR to date.
The Integration of Infrared Environmental Simulation Techniques into a Test Routine at JPL
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Multi-Purpose Thermal/Vacuum Testing With Common Stimuli
A two-phase, common stimuli congiguration test approach was designed to satisfy both environmental reliability and thermal control design test requirements with the Instrument in a system configuration.