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Automated Testing Experience of the Linear Aerospike SR-71 Experiment (LASRE) ControllerSystem controllers must be fail-safe, low cost, flexible to software changes, able to output health and status words, and permit rapid retest qualification. The system controller designed and tested for the aerospike engine program was an attempt to meet these requirements. This paper describes (1) the aerospike controller design, (2) the automated simulation testing techniques, and (3) the real time monitoring data visualization structure. Controller cost was minimized by design of a single-string system that used an off-the-shelf 486 central processing unit (CPU). A linked-list architecture, with states (nodes) defined in a user-friendly state table, accomplished software changes to the controller. Proven to be fail-safe, this system reported the abort cause and automatically reverted to a safe condition for any first failure. A real time simulation and test system automated the software checkout and retest requirements. A program requirement to decode all abort causes in real time during all ground and flight tests assured the safety of flight decisions and the proper execution of mission rules. The design also included health and status words, and provided a real time analysis interpretation for all health and status data.
Document ID
19990090017
Acquisition Source
Armstrong Flight Research Center
Document Type
Reprint (Version printed in journal)
Authors
Larson, Richard R. (NASA Dryden Flight Research Center Edwards, CA United States)
Date Acquired
September 6, 2013
Publication Date
September 1, 1999
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
NASA/TM-1999-206588
H-2380
NAS 1.15:206588
Meeting Information
Meeting: Test and Evaluation in the Information Age
Location: Atlanta, GA
Country: United States
Start Date: September 21, 1999
End Date: September 24, 1999
Sponsors: Information Technology for European Advancement
Funding Number(s)
PROJECT: RTOP 242-33-02
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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