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Basic Comparison of Three Aircraft Concepts: Classic Jet Propulsion, Turbo-Electric Propulsion and Turbo-Hydraulic Propulsion

Clinton Rodrigo

Abstract
Purpose - This thesis presents a comparison of aircraft design concepts to identify the superior propulsion system model among turbo-hydraulic, turbo-electric and classic jet propulsion with respect to Direct Operating Costs (DOC), environmental impact and fuel burn. --- Approach - A simple aircraft model was designed based on the Top-Level Aircraft Requirements of the Airbus A320 passenger aircraft, and novel engine concepts were integrated to establish new models. Numerous types of propulsion system configurations were created by varying the type of gas turbine engine and number of propulsors. --- Findings - After an elaborate comparison of the aforementioned concepts, the all turbo-hydraulic propulsion system is found to be superior to the all turbo-electric propulsion system. A new propulsion system concept was developed by combining the thrust of a turbofan engine and utilizing the power produced by the turbo-hydraulic propulsion system that is delivered via propellers. The new partial turbo-hydraulic propulsion concept in which 20% of the total cruise power is coming from the (hydraulic driven) propellers is even more efficient than an all turbo-hydraulic concept in terms of DOC, environmental impact and fuel burn. --- Research Limitations - The aircraft were modelled with a spreadsheet based on handbook methods and relevant statistics. The investigation was done only for one type of reference aircraft and one route. A detailed analysis with a greater number of reference aircraft and types of routes could lead to other results. --- Practical Implications - With the provided spreadsheet, the DOC and environmental impact can be approximated for any commercial reference aircraft combined with the aforementioned propulsion system concepts. --- Social Implications - Based on the results of this thesis, the public will be able to discuss the demerits of otherwise highly lauded electric propulsion concepts. --- Value - To evaluate the viability of the hydraulic propulsion systems for passenger aircraft using simple mass models and aircraft design concept.

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Date:2019-09-22
Type of work: Master Thesis
Advisor / Examiner:Dieter Scholz
Published by:Aircraft Design and Systems Group (AERO), Department of Automotive and Aeronautical Engineering, Hamburg University of Applied Sciences
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PERSISTENT IDENTIFIER:
URN: https://nbn-resolving.org/urn:nbn:de:gbv:18302-aero2019-09-22.014
DOI:https://doi.org/10.15488/9329
ARK:https://n2t.net/ark:/13960/t2k72zp1t
Associated research data:https://doi.org/10.7910/DVN/K5FLHR    (Program and Data)
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Keywords, German (GND): Luftfahrt,   Luftfahrzeug,   Flugmechanik,   Betriebskosten
Keywords, English (LCSH): Aeronautics,   Airplanes,   Airplanes--Performance,   Cost accounting
Keywords, free: Ölhydraulik, Flugtriebwerk, Elektroantrieb, Kraftstoffverbrauch, Flugzeug, Entwurf, Dimensionierung, Aeroplanes, Design, Airplanes--Jet propulsion, Airplanes--Turbofan engines, Electric propulsion, Airplanes--Distributed propulsion, Hydraulics, Airbus A320 (Jet transport), Airplanes--Fuel consumption, Environmental protection, Electronic spreadsheets, Evaluation, aircraft, aircraft design, flight mechanics, engines, hybrid propulsion, hydraulics, certification, DOC, Direct Operating Costs, Airbus, A320
DDC: 629.13,    629.132,    621.2,    621.46
RVK: ZO 7205

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Prof. Dr.-Ing. Dieter Scholz, MSME
E-Mail see: http://www.ProfScholz.de

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RODRIGO, Clinton, 2019. Basic Comparison of Three Aircraft Concepts: Classic Jet Propulsion, Turbo-Electric Propulsion and Turbo-Hydraulic Propulsion. Master Thesis. Hamburg University of Applied Sciences, Aircraft Design and Systems Group (AERO). Available from: https://nbn-resolving.org/urn:nbn:de:gbv:18302-aero2019-09-22.014 [viewed YYYY-MM-DD].

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LAST UPDATE:  13 February 2020
AUTHOR:  Prof. Dr. Scholz
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