Ethanol content concerns in motor gasoline (mogas) in aviation in comparison to aviation gasoline (avgas)

International Conference on Aerospace and Mechanical Engineering 2017

航空航天工程;机械制造

Thanikasalam, K.^1 ; Rahmat, M.^1 ; Mohammad Fahmi, A.G.^2 ; Zulkifli, A.M.^1 ; Noor Shawal, N.^1 ; Ilanchelvi, K.^3 ; Ananth, M.^3 ; Elayarasan, R.^1

Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia (UTM), Skudai, Johor

81310, Malaysia^1

Department of Aeronautical Engineering, Universiti Tun Hussein Onn Malaysia (UTHM), Johor, Batu Pahat

86400, Malaysia^2

Department of Chemical Engineering, Universiti Malaysia Sabah (UMS), Sabah, Kota Kinabalu

88400, Malaysia^3

关键词: Aviation gasoline;    Federal Aviation Administration;    Internal wear;    Motor gasolines;    Operational safety;    Single engines;    Supplemental type certificates;    System components;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/370/1/012009/pdf
DOI  :  10.1088/1757-899X/370/1/012009

学科分类：航空航天科学

来源: IOP

【 摘 要 】

Mogas has been an alternative to leaded fuel since 1964 when Experimental Aircraft Association (EAA) began testing on it. However, in order for mogas to be used in aircraft engines and air frame modification, approval via the Supplemental Type Certificate (STC) authorization from Federal Aviation Administration (FAA) is mandatory. Cessna on 01.06.2010 evaluated alternative fuels with ethanol based fuels approved by FAA STCs for use in some single engine airplanes. However, Cessna's tests discovered that ethanol based gasoline cannot be viewed as an option to 100LL avgas. The test likewise proposed that operational safety might be in jeopardy if usage of these fuels containing ethanol is continued. Cessna outlined a few problems in MOGAS; MOGAS needs fuel flow increase of 40% compared to AVGAS, MOGAS fuel is incompatible with some fuel system components, possible hazardous influence of electric fuel pumps by adding internal wear causing unexpected spark generation, MOGAS is incompatible with some fuel gauging systems and cause be able to incorrect fuel amount signs on the indicator, dissolve large amounts of water at conditions down to -77°F, impeding detection and removal of water from the fuel system, possible blockage of fuel filters and fuel flow and possible heavy losses from evaporation. This paper reviews concerns when using MOGAS in aircraft.