Table : Pulsed load F-FMEA Pulsed load subsection Function: To provide desired power enabling charging of the pulsed load allowing it to be used as desired. DCDC_S_PL, PL Constituents: No. Constituent Quantity Type devices (general) 1 DCDC 1 delivery device (specific PEC) 2 PL 1 Load No. Failure Cause Effect Severity and remarks mode 1 Faulty Cannot Medium Though PL is a vital load, it's availability is – power operate required less frequently across mission-modes. output PL as from desired. DCDC device due to internal fault. Faulty power output from ACDC devices due to internal fault. Faulty power output from primary power source(s) due to internal fault. quality issues in DC busses due to cabling fault. Internal fault in PL device. Internal fault in charging circuit. 2 No No operation Cannot High This failure mode may indicate more – output of PL. operate towards power generation side. from PL at DCDC all. device due to internal failure. No output
Table : Pulsed load F-FMEA Pulsed load subsection Function: To provide desired power enabling charging of the pulsed load allowing it to be used as desired. Constituents: DCDC_S_PL, PL No. Constituent devices (general) Quantity Type 1 DCDC 1 delivery device (specific PEC) 2 PL 1 Load No. Failure mode Cause Effect Severity and remarks 1 Faulty power output from DCDC device due to internal fault. Cannot operate PL as desired. Medium – Though PL is a vital load, it's availability is required less frequently across mission-modes. Faulty power output from ACDC devices due to internal fault. Faulty power output from primary power source(s) due to internal fault. quality issues in DC busses due to cabling fault. Internal fault in PL device. Internal fault in charging circuit. 2 No operation of PL. No output from DCDC device due to internal failure. Cannot operate PL at all. High – This failure mode may indicate more towards power generation side. No output
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