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Robust gas turbine and airframe system design in light of uncertain fuel and CO2 prices

Robust gas turbine and airframe system design in light of uncertain fuel and CO2 prices
Robust gas turbine and airframe system design in light of uncertain fuel and CO2 prices
This paper presents a study that numerically investigated which cruise speed the next generation of short-haul aircraft with 150 seats should fly at and whether a conventional two- or three-shaft turbofan, a geared turbofan, a turboprop, or an open rotor should be employed in order to make the aircraft's direct operating cost robust to uncertain fuel and carbon (CO2) prices in the Year 2030, taking the aircraft productivity, the passenger value of time, and the modal shift into account. To answer this question, an optimization loop was set up in MATLAB consisting of nine modules covering gas turbine and airframe design and performance, flight and aircraft fleet simulation, operating cost, and optimization. If the passenger value of time is included, the most robust aircraft design is powered by geared turbofan engines and cruises at Mach 0.80. If the value of time is ignored, however, then a turboprop aircraft flying at Mach 0.70 is the optimum solution. This demonstrates that the most fuel-efficient option, the open rotor, is not automatically the most cost-efficient solution because of the relatively high engine and airframe costs.
0021-8669
1372-1390
Langmaak, Stephan
0be237c1-5f10-4645-99a3-fa274c3939c9
Scanlan, James
7ad738f2-d732-423f-a322-31fa4695529d
Sobester, Andras
096857b0-cad6-45ae-9ae6-e66b8cc5d81b
Langmaak, Stephan
0be237c1-5f10-4645-99a3-fa274c3939c9
Scanlan, James
7ad738f2-d732-423f-a322-31fa4695529d
Sobester, Andras
096857b0-cad6-45ae-9ae6-e66b8cc5d81b

Langmaak, Stephan, Scanlan, James and Sobester, Andras (2016) Robust gas turbine and airframe system design in light of uncertain fuel and CO2 prices. Journal of Aircraft, 53 (5), 1372-1390. (doi:10.2514/1.C033610).

Record type: Article

Abstract

This paper presents a study that numerically investigated which cruise speed the next generation of short-haul aircraft with 150 seats should fly at and whether a conventional two- or three-shaft turbofan, a geared turbofan, a turboprop, or an open rotor should be employed in order to make the aircraft's direct operating cost robust to uncertain fuel and carbon (CO2) prices in the Year 2030, taking the aircraft productivity, the passenger value of time, and the modal shift into account. To answer this question, an optimization loop was set up in MATLAB consisting of nine modules covering gas turbine and airframe design and performance, flight and aircraft fleet simulation, operating cost, and optimization. If the passenger value of time is included, the most robust aircraft design is powered by geared turbofan engines and cruises at Mach 0.80. If the value of time is ignored, however, then a turboprop aircraft flying at Mach 0.70 is the optimum solution. This demonstrates that the most fuel-efficient option, the open rotor, is not automatically the most cost-efficient solution because of the relatively high engine and airframe costs.

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Accepted/In Press date: 12 January 2016
e-pub ahead of print date: 1 August 2016
Published date: September 2016
Organisations: Computational Engineering & Design Group

Identifiers

Local EPrints ID: 385879
URI: http://eprints.soton.ac.uk/id/eprint/385879
ISSN: 0021-8669
PURE UUID: 389bbf73-b63c-440b-a1fe-2928d5ba3f07
ORCID for Andras Sobester: ORCID iD orcid.org/0000-0002-8997-4375

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Date deposited: 25 Jan 2016 14:50
Last modified: 15 Mar 2024 03:13

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Contributors

Author: Stephan Langmaak
Author: James Scanlan
Author: Andras Sobester ORCID iD

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