1、Lessons Learned Entry: 1017Lesson Info:a71 Lesson Number: 1017a71 Lesson Date: 1997-02-01a71 Submitting Organization: HQa71 Submitted by: David M. LengyelSubject: International Space Station (ISS) Program/Caution and Warning System/Systems Engineering Description of Driving Event: Application of Sys
2、tems Engineering Methodology to ISS Caution and Warning SystemLesson(s) Learned: Design of the Caution and Warning (C&W) system had been lagging behind that of other ISS systems. Priority has now been given to the system engineering effort that is required to resolve conflicting operational concepts
3、 and to finalize the design.Recommendation(s): Continue to apply high-level system engineering attention to the expeditious resolution of C&W design philosophies and implementations.Evidence of Recurrence Control Effectiveness: NASA concurs. The ISS Caution and Warning (C&W) system has matured throu
4、ghout 1996, with improvements in tone commonality, event definition, Personal Computer System (PCS) display development, application code generation, and recognition by all program elements. The C&W System Integration Teams (CWSIT) primary purpose is to ensure that the C&W system is safe, robust, an
5、d integrated throughout the vehicle and throughout the lifetime of the program. The teams primary responsibilities include:a71 Providing end-to-end C&W design integration, including display and response concept definition.a71 Developing and leading a forum for resolution of C&W design/operational is
6、sues Attachment Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 provides specific responses based on the current design for the examples cited in Section III: Information in Support of Findings and Recommendations, ASAP Annual Report, February 1997
7、.In addition, in response to the ASAP concerns, the International Space Station Program Office (ISSPO) has tasked two independent assessments of caution and warning activities. These efforts are led by the Manager, ISS Independent Assessment, and the ISS Chief Engineer. These assessments were comple
8、ted in August 1997.Documents Related to Lesson: N/AMission Directorate(s): a71 Space Operationsa71 Exploration SystemsAdditional Key Phrase(s): a71 Aerospace Safety Advisory Panela71 Configuration Managementa71 Human Factorsa71 Risk Management/Assessmenta71 Safety & Mission Assurancea71 Softwarea71
9、Spacecrafta71 Standarda71 Test & VerificationAdditional Info: Approval Info: a71 Approval Date: 2001-11-20a71 Approval Name: Bill Loewya71 Approval Organization: QSa71 Approval Phone Number: 202-358-0528Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
