ET Shuttle Observation Camera STS-112 PAR
Background
Action assigned to JSC to evaluate potential locations for a Space Shuttle Vehicle Observation Camera
ET stand-alone camera located on the ET Cable Tray was recommended and approved
System Functional Description
- Camera system is designed to function independently of other Shuttle systems and provide real-time video of Shuttle launch through ET separation
- Activated during T-9 minute hold - Provides continuous Pre-launch and flight video (See page 4 for view)
- SSV leaving pad
- SRB separation
- ET/Orb separation
Camera system function considered non-critical
- - Camera system is a data gathering device
- - No flight control function performed
ET Shuttle Observation Camera STS-112 PAR
ET Shuttle Observation Camera STS-112 PAR
ET Shuttle Observation Camera STS-112 PAR
Safety Analysis Report (SAR)/Critical Items List (CIL) Summary
- SAR performed to identify potential safety hazards associated with the ET Camera System
- Considering the strong controls and verifications in place, the overall likelihood of occurrence of a catastrophic hazard remains "improbable", and all hazard causes are 'Controlled'
- All identified hazards have been found to be controlled by design, specification, tests and/or inspections and all safety issues are closed
- Shuttle Safety Review Panel (SSRP) SAR review completed 3/2000 - No Issues
- Failure Modes and Effects Analysis (FMEA) and Critical Items List (CIL) updated to identify
- Criticality 1 failure modes and document retention rationale associated with the ET Camera System
- - Criticality 1 ET Camera Components
- -- Antenna (4.2.14.1) (303 Stainless Steel)
- -- Camera Fairing (4.3.126.1) ( Al 2219)
- - Criticality 1 Failure modes of the new CILs are structural failure and effects are due to debris potential to the Orbiter
- - CIL Retention Rationale presented to the SSRP 5/2002 and PRCB 6/2002 - No Issues
ET Shuttle Observation Camera STS-112 PAR
Flight Hardware Certification Summary
Test
Camera System Hardware Qualification Testing complete - No issues
- -- System EMI Testing
- -- Fairing, Antenna and Electronics Box vibration
- -- RF and corona testing
- -- Electronics Box proof and explosive environments testing
Camera System Hardware Acceptance Testing complete - No issues
- -- Functional verification of components
- -- Electronics box vibration and thermal cycling
- -- Antenna pattern verification
- -- Camera and electronics burn-in
Camera System Functional Testing at MAF complete - No Issues
- -- Battery charge, camera function, transmitter function, dedfacing
ET Shuttle Observation Camera STS-112 PAR
Flight Hardware Certification Summary (continued)
- Analysis
-- Stress Analysis on system components complete - No issues
- --- Factor of safety greater than 2.0 for all new hardware
- --- Incorporates Aerodynamic and Delta Atmospheric Pressure Loading, Random Vibration Effects, and
-- Thermally Induced Stresses
-- Thermal Analysis on Components Complete - No Issues
- ---Temperatures were within acceptable limits and were incorporated into stress analysis
Demonstration
- - All work performed by certified technicians
- -- Non-standard work validated at MAF and demonstrated at KSC
Inspection
- - System installation verified by Government Mandatory quality inspections
Certificate of Qualification approved (Reference COQ MMC-ET-TM06-127)
ET Shuttle Observation Camera STS-112 PAR
Rationale for Flight
- Camera system design fully qualified by test and analysis
- -- Acceptance testing successfully performed
- -- Functional test showed nominal performance
- ---Integrated functional tests planned after STS-112 rollout
- -- Stress Analysis ensures greater than 2.0 FS
- -- Thermal analysis ensures temperature within acceptable limits
- Camera system installation verified by demonstration and inspection
- -- Installation performed by certified technicians with validated and demonstrated processes
- -- Camera system inspection performed during and after installation
S&MA Recommendation
- STS-112/ET-115 Shuttle Observation Camera is safe to fly
