REG NASA-LLIS-1151--2000 Lessons Learned - Space Shuttle Program Computer Hardware-Software Avionics Upgrades.pdf

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1、Lessons Learned Entry: 1151Lesson Info:a71 Lesson Number: 1151a71 Lesson Date: 2000-02-01a71 Submitting Organization: HQa71 Submitted by: David M. LengyelSubject: Space Shuttle Program/Computer Hardware-Software/Avionics Upgrades Description of Driving Event: NASA Pursuit of Shuttle Avionics Upgrade

2、sLesson(s) Learned: NASA has established an Avionics Upgrade Architecture Team (AUAT) charged with studying Space Shuttle avionics systems and recommending upgrades. The AUAT has conducted a thorough study and developed an excellent Block I upgrade plan that addresses the most serious needs, but as

3、yet it is unfunded.Recommendation(s): Proceed with full funding for the proposed Block I Space Shuttle avionics upgrades as rapidly as possible.Evidence of Recurrence Control Effectiveness: The SSP has two categories of avionics upgrades - safety and supportability. Both safety upgrades and hardware

4、 supportability upgrades meet the Agencys goal of continued and reliable Shuttle operations, with significantly reduced safety risks, through at least FY 2012.NASA is aggressively developing an Upgrade Program Plan for implementing the safety upgrades into the Shuttle fleet by FY 2005. These upgrade

5、s include the avionics changes required to add cockpit displays for abort situation awareness, and enhanced caution and warning, which will provide information and solutions that will significantly reduce the crew workload for complex and/or multiple failures. Funding for the formulation phase (requ

6、irement definition and validation, design Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-architecture, and subsystem procurement specification) for these upgrades has been authorized by the program and is underway. The current NASA SSP budget submis

7、sion also provides for implementation funding.Potential avionics supportability upgrades needed to reliably ensure that flight-certified hardware is available to support the Shuttle manifest through FY 2012 are under review. Ongoing avionics supportability upgrade analyses focus primarily on mainten

8、ance concerns associated with the orbiter integrated communications system. The case for upgrading the communications system, and the various upgrade options studied by the avionics supportability assessment team will be reviewed by the program during the POP 2000 planning cycle.Documents Related to

9、 Lesson: N/AMission Directorate(s): a71 Exploration Systemsa71 Space Operationsa71 Aeronautics ResearchAdditional Key Phrase(s): a71 Aerospace Safety Advisory Panela71 Computersa71 Policy & Planninga71 Research & Developmenta71 Risk Management/Assessmenta71 Softwarea71 Spacecrafta71 Test & VerificationAdditional Info: Approval Info: a71 Approval Date: 2002-03-18a71 Approval Name: Bill Loewya71 Approval Organization: HQa71 Approval Phone Number: 202-358-0528Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-