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Systems Engineering
Volume 2, Number 1 (Winter 2000/2001)
From the Editor
Headlines
Concurrent Design at Aerospace
Engineers and customers work together to design new space systems in a setting that accelerates the development process. Real-time interaction between specialists is the key.
Estimating Probable System Cost
Basing a system cost estimate on past systems can be tricky. Analysts who do this find that the sum of the most likely costs of the elements of a space system in development does not equal the most likely cost of the entire system. Using probability distributions to treat cost estimation as a statistical process can provide estimates that are much more meaningful.
Space Launch Vehicle Reliability
The 1993 failure of a Titan IV K-11 launch vehicle prompted the U.S. Air Force to request The Aerospace Corporation's participation in an analysis of space-mission failures. I-Shih Chang led the Aerospace study, which was later expanded to support the DOD Broad Area Review of U.S. launch failures between 1985 and 1999. This article is the second in the Crosslink series on the history of the corporation's role in national space programs.
Small-Satellite Costs
The forces that drive the costs of today's small satellites are very different from the forces that drive the costs of all other satellites. NASA and DOD needed a new model to gauge small-satellite costs-and The Aerospace Corporation created one.
Space-Based Systems for Missile Surveillance
Aerospace uses sophisticated analysis and simulation tools to design systems, assess their performance, and link design and performance to system cost.
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