REG NASA-LLIS-3297-2011 Lessons Learned Place Pneumatic Panels in an Air-Conditioned Environment.pdf

1、Public Lessons Learned Entry: 3297 Lesson Info: Lesson Number: 3297 Lesson Date: 2010-06-10 Submitting Organization: KSC Submitted by: Richard Hallam Subject: Place Pneumatic Panels in an Air-Conditioned Environment Abstract: Pneumatic regulation panels are currently subject to extremes of both weat

2、her and launch conditions (spray, temperature extremes, and humidity). To eliminate the temperature-induced pressure changes, place the pneumatic panels in an air-conditioned environment. Description of Driving Event: Pneumatic regulation panels experience frequent pressure adjustments when the ambi

3、ent temperature changes. They also require frequent corrosion-induced repairs. Lesson(s) Learned: Changes in ambient temperature cause the control pressure to change, which requires frequent readjustment to the regulators. The humidity/ocean spray/launch residue condense on the pneumatic panels and

4、their components and cause corrosion that requires more frequent repairs to be performed. Recommendation(s): 1. To eliminate the temperature-induced pressure changes, place the pneumatic panels in an air-conditioned environment. 2. An air-conditioned operating environment would also have a reduced h

5、umidity and a lower salt content, thus reducing the corrosive elements encountered by the panels. 3. Operational cost and environmental consideration should be reflected in life-cycle analysis during early design phases. Evidence of Recurrence Control Effectiveness: N/A Documents Related to Lesson:

6、N/A Mission Directorate(s): Space Operations Additional Key Phrase(s): Maintenance Ground support systems Simulators and Training Systems Engineering design and project processes and standards Ground Equipment Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Additional Info: Project: Space Shuttle Program Approval Info: Approval Date: 2011-02-18 Approval Name: mbell Approval Organization: HQ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-