Publication Date:
2019-08-13
Description:
Reliable operation of the spark ignition system electronics in the J2X Augmented Spark Igniter (ASI) is imperative in assuring ASI ignition and subsequent Main Combustion Chamber (MCC) ignition events are reliable in the J2X Engine. Similar to the manrated J2 and RS25 engines, the J2X ignition system electronics are equipped with spark monitor outputs intended to indicate that the spark igniters are properly energized and sparking. To better understand anomalous spark monitor data collected on the J2X development engines at NASA Stennis Space Center (SSC), a comprehensive subsystem study of the engine's low and hightension spark ignition system electronics was conducted at NASA Marshall Space Flight Center (MSFC). Spark monitor output data were compared to more detailed spark diagnostics to determine if the spark monitor was an accurate indication of actual sparking events. In addition, ignition system electronics data were closely scrutinized for any indication of an electrical discharge in some location other than the firing tip of the spark igniter a problem not uncommon in the development of high voltage ignition systems.
Keywords:
Spacecraft Propulsion and Power
Type:
M15-4317
,
Modeling and Simulation Subcommittee; Jun 01, 2015 - Jun 05, 2015; Nashville, TN; United States|Liquid Propulsion Subcommittee; Jun 01, 2015 - Jun 05, 2015; Nashville, TN; United States|Spacecraft Propulsion Subcommittee; Jun 01, 2015 - Jun 05, 2015; Nashville, TN; United States|JANNAF Propulsion Meeting; Jun 01, 2015 - Jun 05, 2015; Nashville, TN; United States
Format:
application/pdf
