Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Nicholas Grech"'
As the size of aero-engines has increased in recent years, the need for slimmer and shorter nacelles has become more pressing. A more aggressive design space must therefore be explored for nacelle designs which are expected to perform worse in the of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd092a4b22b58265c0fb3f18b1f7dc7e
https://dspace.lib.cranfield.ac.uk/handle/1826/15781
https://dspace.lib.cranfield.ac.uk/handle/1826/15781
Autor:
Christopher Sheaf, Nicholas Grech, Ioannis Goulos, Tomasz Stankowski, John J. Otter, David G. MacManus
Publikováno v:
The Aeronautical Journal. 122:1586-1605
This paper presents the development and application of a computational framework for the aerodynamic design of separate-jet exhaust systems for Very-High-Bypass-Ratio (VHBR) gas-turbine aero-engines. An analytical approach is synthesised comprising a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce3a87edcc120f7c36c7e3d7a28a60a5
https://doi.org/10.1017/aer.2018.95
https://doi.org/10.1017/aer.2018.95
Future civil air vehicles are likely to feature propulsion systems which are more closely integrated with the airframe. For a podded underwing configuration, this close coupling is expected to require non-axisymmetric design capabilities for the aero
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04b600808047a22b68b45c1c88f60df2
https://dspace.lib.cranfield.ac.uk/handle/1826/14466
https://dspace.lib.cranfield.ac.uk/handle/1826/14466
Autor:
Jean-Paul Farrugia, Carl Caruana, Marlon Chircop, Mario Farrugia, Michael Farrugia, Jean Paul Azzopardi, Nicholas Farrugia, Nicholas Grech
Publikováno v:
SAE Technical Paper Series.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a57270f49ea2abfe73a210c337383ec1
https://doi.org/10.4271/2018-01-0967
https://doi.org/10.4271/2018-01-0967
A multi-objective optimiZation method is demonstrated using an evolutionary genetic algorithm. The applicability of this method to preliminary nacelle design is demonstrated by coupling it with a response surface model of a wide range of nacelle desi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b04820ba57b9964a090cc2273eb4a148
https://dspace.lib.cranfield.ac.uk/handle/1826/11409
https://dspace.lib.cranfield.ac.uk/handle/1826/11409
Autor:
Christopher Sheaf, John J. Otter, David G. MacManus, Nicholas Grech, Ioannis Goulos, Tomasz Stankowski
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 138
The aerodynamic performance of the bypass exhaust system is key to the success of future civil turbofan engines. This is due to current design trends in civil aviation dictating continuous improvement in propulsive efficiency by reducing specific thr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf73f196da64ca1a5f86474dbb3be101
https://doi.org/10.1115/1.4032652
https://doi.org/10.1115/1.4032652
Autor:
John J. Otter, Christopher Sheaf, Tomasz Stankowski, Nicholas Grech, David G. MacManus, Ioannis Goulos
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 138
This paper presents the development of an integrated approach which targets the aerodynamic design of separate-jet exhaust systems for future gas-turbine aero-engines. The proposed framework comprises a series of fundamental modeling theories which a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::643980c6a0368e1dfd566317262ee53f
https://doi.org/10.1115/1.4032649
https://doi.org/10.1115/1.4032649
Publikováno v:
Engineering Applications of Computational Fluid Mechanics. 5:26-36
The performance prediction of axial flow compressors and turbines still relies on the stationary testing of blade cascades. Most of the blade testing studies are done for operating conditions close to the design point or in off-design areas not too f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe216cca83b0d108c16ab07c83c5ff31
https://doi.org/10.1080/19942060.2011.11015350
https://doi.org/10.1080/19942060.2011.11015350
Publikováno v:
Volume 2: Aircraft Engine; Coal, Biomass and Alternative Fuels; Cycle Innovations.
Aero-gas turbine engines with a mixed exhaust configuration offer significant benefits to the cycle efficiency relative to separate exhaust systems, such as increase in gross thrust and a reduction in fan pressure ratio required. A number of military
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::799d68c6cf322f2d6df52707e1379d9b
https://doi.org/10.1115/gt2013-94366
https://doi.org/10.1115/gt2013-94366