Influence of Bioethanol Blends on Performances of a Micro Turbojet Engine

Abstract

This paper proposes a study regarding the use of bioethanol as fuel for turbine engines used in aviation. For this purpose, three blends of 5, 10, and 15% concentrations of bioethanol mixed with Jet A fuel were tested on JET CAT P80 microturbo engine. During the engine testing, the following parameters were monitored: engine speed, generated force, temperature in front of the turbine, fuel volumetric flow rate, and vibration levels measured both on axial and radial direction. The tests were performed by maintaining the microturbo engine for about 1 min at three operating regimes: idle, cruise, and maximum speed. In addition, a comparative analysis between fuels for a test with the microturbo engine from the idle position to maximum position is presented. After the tests were conducted, a jet engine cycle analysis was performed at the max regime and the fuel specific consumption, the efficiency of the combustion chamber, and the thermal efficiency of the engine for each fuel blend were calculated. The tests were made without making any modifications to the engine components or automation system.

Lab Scale Investigation of Gaseous Emissions, Performance and Stability of an Aviation Turbo-Engine While Running on Biodiesel Based Sustainable Aviation Fuel

“…Performance parameters are computed based on the methodology outlined in reference [27]. Density determination for each examined fuel blend enables the conversion of measured fuel flow, as recorded by the engine instrumentation, from l/h to kg/s.…”

“…A few of the studies have been finalized also with demonstrative flights [21][22][23]. In addition to engine performance assessment, research has also been focused on the evaluation of combustion and gaseous pollutant emissions [24][25][26][27][28][29].…”

“…This analysis involved the calculation of fuel-specific consumption, combustion chamber efficiency, and thermal efficiency of the engine for each fuel blend. It is pertinent to note that these assessments were executed without any alterations made to the engine components or the automation system [27].…”

Experimental Evaluation of Methanol/Jet-A Blends as Sustainable Aviation Fuels for Turbo-Engines: Performance and Environmental Impact Analysis

“…Additionally, research has investigated the use of ethanol as an environmentally friendly fuel for small gas turbine engines in controlled laboratory environments, evaluating various ethanol and Jet-A-1 mixtures and their effects on engine parameters [16]. Notably, bioethanol blends with Jet-A fuel were subjected to testing using the JET Cat P80 ® micro turbo-engine (GUNT Hamburg, Germany), with careful monitoring of engine parameters across various operational conditions [17].…”