Space Interferometry Mission reliability modeling
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reliability modeling↗
Engineering topics
Walker, W. J.
Publications and source records attributed to Walker, W. J..
Reliability modeling for the Space Interferometry Mission
The Space Interferometry Mission in NASA's Origins Program is a 10m-baseline space-based Michelson interferometer scheduled for launch in 2009. This large instrument will measure the angles between stars to an accuracy of about one billionth of a degree of arc. This is an about two orders of magnitude over current astrometric instruments.
SIM reliability probability modeling↗
High speed interconnect for the Space Interferometry Mission
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avionics interconnect interferometry↗
High speed interconnect for the Space Interferometry Mission
This paper describes a high-speed avionics interconnect for a space-borne stellar interferometer.
interferometry high-speed interconnect↗
Development and use of an integrated analysis capability
The paper describes a multi-discipline integrated analysis capability, designed to aid the engineering community in coupling of existing modules and in handling of the associated software and data. This capability consists of an executive program which manages tasks and data, a number of technical modules, graphics and special purpose modules, inter-module data flow interfaces, and associated user documentation. The current implementation provides specific modules and coupled solution paths for the thermal, structures and controls technologies. However, the system has been designed to serve also as a framework into which user groups may incorporate other modules and technologies. Details of the system architecture are discussed, in the context of the major design decisions and the software development and usage experience. The paper provides a brief discussion of some other integrated systems which are available or under development.
Vos, R. G.↗
Interactive analysis program activity
The development of an analysis software system capable of performing interdisciplinary preliminary design analyses of large space structure configurations is discussed. Disciplines such as thermal, structures, and controls are to be integrated into a highly user oriented analysis capability. The key feature of the integrated analysis capability, a rapid and efficient system that will minimize solution turnaround time, is discussed.
Young, J. P.↗
Propulsion system structural integration and engine integrity; Proceedings of the Symposium, U.S. Naval Postgraduate School, Monterey, Calif., September 3-6, 1974
Current problems involving the structural integrity of propulsion systems, and proposed approaches to solving them, are reviewed. Areas investigated include the stall hammershock at the engine inlet, distortion-induced vibration in fan and compressor blading, modeling engine static structures with conical-shell finite elements, design and development of low-cost, self-contained bearing lubrication systems for turbine engines, and roller bearing slip and skidding damage. Individual items are announced in this issue.
Walker, W. J.↗