Scientific Development
Coupling the safety of Aero-engines with Refining for Alternative Aviation Fuels

DING Shuiting, YANG  Xiaoyi
School of Energy and Power Engineering,
Beihang University,
37 Xueyuan Rd, Beijing,100191 P. R .China



“Drop-in” fuels are considered to substitute for kerosene without change of aero-engine and aircraft as well as infrastructure. The current standard specification for alternative fuel (ASTM D 7566-13) have been deduced from the jet fuel specification properties (ASTM D1655) based on as same as replacement part, which results in cost-time and cost-fuel certification process as well as lack of testing conditions or acceptance criteria for the certification of alternative aviation fuel in compliance with ASTM D4054.If the fuel is considered as one of the engine replacement parts, then the certification and management of alternative fuels can be achieved through compliance verification method including “similar analogy” and “history experience”.This research is discussed to extract a fuel-independent safety criterion from the “history experience”of aviation kerosene and to predict the aero-engine safety implications of alternative aviation fuels by “similar analogy”of aviation kerosene. The critical parameterswith the characteristic parametric numerical description are extracted on five levels which are fuel specification level, fuel system level, component level, engine level and aircraft level. The work margin ofcritical parametersobtained from alternative fuelis analogized with the safety margin of critical parametersbased on kerosene experience, and accordingly the results can be analyzed and identified the safety of aero-engine in alternative fuel. This certification process help to achieveon the safety of alternative fuel and the cost on the refining fuel required as same as kerosene.

Keywords: Alternativeaviation fuels, Compliance verification, Airworthiness, Similar analogy