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http://dx.doi.org/10.5139/JKSAS.2014.42.8.707

Design Improvement for Abnormal Display of Fuel Indicator Mounted on the Korean Utility Helicopter  

Kim, Joung-Hun (Defense Agency for Technology and Quality)
Kim, Chang-Young (Defense Agency for Technology and Quality)
Chang, Joong-Jin (Defense Agency for Technology and Quality)
Chang, In-Ki (Defense Agency for Technology and Quality)
Jun, Byung-Kyu (Defense Agency for Technology and Quality)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.42, no.8, 2014 , pp. 707-712 More about this Journal
Abstract
Aircraft fuel indicator is a device to indicate the amount of fuel remained during flight, where accurate and consistent operation of the indicator should be maintained. Previously the Korean Utility Helicopter fuel indicator sporadically displayed abnormal sign by "8888" during flight, jeopardizing flight safety. Inappropriate EMI/EMC performance was detected during trouble shooting process. The cause of the abnormal display was found to be resulted from unstable power induced by electro-magnetic disturbance and CAN communication error. The aircraft fuel indicator design was improved and the design compatibility was verified to avoid abnormal display.
Keywords
Korean Utility Helicopter; Fuel Indicator; Fuel System; EMI/EMC; Controller Area Network; Avionics;
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  • Reference
1 HELICOPTER, UTILITY, Korea Defence Standard KDC 1450-T4001, 2012, pp.102
2 BOSCH CAN Specification, 1991, pp.28
3 Qualification Test Report for KUH Fuel Quantity Measurement System, 2012, pp.5
4 EMI/EMC Test Report for KUH Fuel Quantity Measurement System, 2012, pp.24
5 Requirement for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment, MIL-STD-461F, Dec. 2007
6 EMI/EMC Test Report, 2013, pp.5