Safety Guided Spacecraft Design Using Model-Based Specifications
Abstract
Most of the basic design decisions affecting safety are made in the concept development stage of system development. Once these decisions are made, the cost of changing them later in development is often enormous and perhaps even infeasible. At the same time, most hazard analysis methods require a fairly complete design to be most useful. By the time enough design has been completed for hazard analysis to be able to identify flaws in the design, the cost of rework and changing basic decisions is great. The solution to these problems is to integrate safety tightly into the system development process from the very beginning of system conception. In this paper, we describe a process for tightly intertwining design and analysis starting in the early development stages. The process involves defining safety as a control problem (STAMP) and using model-driven development and executable requirements specifications.
- Publication:
-
A Safer Space for Safer World
- Pub Date:
- January 2012
- Bibcode:
- 2012ESASP.699E..77F