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http://dx.doi.org/10.5139/JKSAS.2005.33.5.099

Test and Simulation of An Engine for Long Endurance Miniature UAVs  

Shin, Young-Gy (세종대학교 기계공학과)
Chang, Sung-Ho (한국항공우주연구원 Smart UAV 그룹)
Koo, Sam-Ok (한국항공우주연구원 Smart UAV 그룹)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.33, no.5, 2005 , pp. 99-105 More about this Journal
Abstract
Development of an engine with good fuel economy is very important for successful implementation of long endurance miniature UAVs (unmanned aerial vehicles). In the study, a 4-stroke glow-plug engine was modified to a gasoline-fueled spark-ignition engine. Engine tests measuring performance and friction losses were conducted to tune a simulation program for performance prediction. It has been found that excessive friction losses are caused by insufficient lubrication at high speeds. The simulation program predicts that engine power and fuel economy get worse with high altitude due to increasing portion of friction losses. The simulation results suggest quantitative guidelines for further development of a practical engine.
Keywords
Reciprocating Engine; UAV; Long Endurance; Glow Engine; Simulation; BMEP;
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