REG NASA-LLIS-5183-2012 Flight Termination System (FTS) Safe and Arm (S&A) Device Monitoring Capability.pdf

1、Public Lessons Learned Entry: 5183 Lesson Info: Lesson Number: 5183 Submitting Organization: KSC Submitted by: Jenni Palmer Subject: Flight Termination System (FTS) Safe and Arm (S&A) Device Monitoring Capability Abstract: Late in the Constellation Program, a trade study was performed to assess ordn

2、ance connects and closeouts in the Vehicle Assembly Building (VAB) at the Kennedy Space Center. This trade study discussed the need for ground system upgrades in the processing flow. One of these upgrades required establishing a monitoring capability for a Flight Termination System (FTS) Safe and Ar

3、m (S&A) device when power is removed during vehicle rollout. This operational upgrade will require process modification to ground and flight subsystems. Description of Driving Event: A trade study to evaluate closeout for vehicle ordnance access while in the VAB was approved by the Operations Contro

4、l Panel/Program Review Board (OCP/PRB). Lesson(s) Learned: Safety concluded that S&A monitoring may be required continuously during vehicle rollout if ordnance is connected. Acquiring this capability would require that existing ground systems and flight avionics hardware be upgraded. Recommendation(

5、s): If ordnance is to be connected to a launch vehicle and power is to be disconnected from the vehicle in an off-pad integration facility, then design and installation work for new ground and flight system components will be necessary to set up monitoring of an FTS S&A device. A requirement for thi

6、s upgrade should be added to both project and subsystem ground and flight elements. Evidence of Recurrence Control Effectiveness: N/A Documents Related to Lesson: N/A Mission Directorate(s): Exploration Systems Additional Key Phrase(s): Systems Engineering and Analysis. Systems Engineering and Analy

7、sis.Level II/III requirements definition Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Additional Info: Project: Constellation Approval Info: Approval Date: 2012-08-22 Approval Name: mbell Approval Organization: HQ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-