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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
Determining the Service and Absolute Ceilings of Battery-Powered Electric Aircraft
Submission Author:
Guilherme Barufaldi , SP
Co-Authors:
Guilherme Barufaldi, ROBERTO GIL ANNES DA SILVA
Presenter: Guilherme Barufaldi
doi://10.26678/ABCM.ENCIT2020.CIT20-0169
Abstract
Electric propulsion for airplanes is becoming a reality. This aviation market segment has grown considerably during the last decades and, in the next years, light general aviation and training airplanes are expected to become operational. Due to many factors, batteries are still the main power source currently in use for electric propulsion. Recent studies have shown the performance potential of battery-powered airplanes. Among the particular characteristics of these aircraft is the capacity to reach significantly higher altitudes than aircraft powered by internal combustion engines. This work presents a method for calculating the service and absolute ceilings of such type of aircraft, i.e., the maximum altitudes that can be reached. These quantities are important to determine suitable altitudes for cruise flight and other operational characteristics. The method is based on a combination of analytical and numerical computation procedures and take into account motor and propeller data. Aircraft, motor and battery models are presented in parametric form, together with the characteristic curves of a fixed pitch propeller. Numerical results are obtained and show that high altitudes may indeed be reached.
Keywords
Electric aircraft, Electric Propulsion, flight performance, climb performance, green aircraft
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