Title: Turbofan engine weight estimation for preliminary design

Authors: Mustafa Karabacak; Onder Turan

Addresses: Necmettin Erbakan University, Faculty of Aeronautics and Astronautics, 15 Temmuz Campus, 42090, Konya, Turkey ' Eskisehir Technical University, Faculty of Aeronautics and Astronautics, Iki Eylul Campus, 26470, Eskisehir, Turkey

Abstract: The aim of the study is to prepare weight estimation model of turbofan engines to help designer in the conceptual stages of modern turbofan design. To achieve this purpose, statistical data is used on yielding robust analytical expression and experiments are conducted to prepare model for turbofan engine weight estimation is not easy due to the high cost and insufficient technical facility. Turbofan engine classified into five categories (three shaft turbofan engine, light weight two shaft turbofan engine, medium weight two shaft turbofan engine, high weight two shaft turbofan engine and two shaft geared turbofan engine) and turbofan engine weight model is developed for each category separately to increase model sensitivity. Model sensitivity is investigated for each category by error analysis to give idea about model reflection of real world to conceptual designer.

Keywords: turbofan engine weight; thrust to weight ratio; bypass ratio; aircraft.

DOI: 10.1504/IJSA.2019.101745

International Journal of Sustainable Aviation, 2019 Vol.5 No.2, pp.87 - 100

Received: 05 Jan 2019
Accepted: 25 Feb 2019

Published online: 13 Aug 2019 *

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