Results 11 to 20 of about 569,378 (221)

Implications of aero-engine deterioration for a military aircraft's performance [PDF]

open access: yes, 1999
World developments have led the armed forces of many countries to become more aware of how their increasingly stringent financial budgets are spent. Major expenditure for military authorities is upon aero-engines.
Naeem, Muhamma
core   +7 more sources

Multi-disciplinary conceptual design of future jet engine systems [PDF]

open access: yes, 2010
This thesis describes various aspects of the development of a multi-disciplinary aero engine conceptual design tool, TERA2020 (Techno-economic, Environmental and Risk Assessment for 2020), based on an explicit algorithm that considers: engine ...
Kyprianidis, Konstantinos G.
core   +7 more sources

Aerodynamics of Aero-Engine Installation [PDF]

open access: yes54th AIAA Aerospace Sciences Meeting, 2016
This paper describes current progress in the development of methods to assess aero-engine airframe installation effects. The aerodynamic characteristics of isolated intakes, a typical transonic transport aircraft as well as a combination of a through-flow nacelle and aircraft configuration have been evaluated. The validation task for an isolated engine
Stankowski, Tomasz P.   +3 more
openaire   +3 more sources

Design, techno-economic and environmental risk assessment of aero-derivative industrial gas turbine [PDF]

open access: yes, 2012
Increased availability of natural gas has boosted research and development efforts to further increase gas turbine performance. Performance has been increased remarkably and unit cost reduced due to achievements gained in improving thermodynamic ...
Abaad, Abdelmanam
core   +4 more sources

Comparison of unconventional aero engine architectures [PDF]

open access: yes, 2011
In the light of global warming, the associated socio economical consequences, and the projected shortage of natural energy resources and ever rising oil prices, this thesis examines the potential for unconventional aero engine architectures to reduce ...
Noppel, F. G.
core   +3 more sources

An Overview on Development of Small Turbine Engines for Missiles

open access: yesHangkong gongcheng jinzhan, 2018
To provide superior cruise thrust for high subsonic intermediate-long range missiles, small turbojet and turbofan engines have become the competitive focus for military powers.
Xue Ranran, Li Fengchao, Ren Lilei
doaj   +1 more source

Investigation of Flow and Heat Transfer Characteristics in Microchannels with Fins

open access: yesMachines, 2023
A highly efficient thermal management is imperative to overcome the main challenges associated with heat extraction requirements in electronics. In this study, the flow and heat transfer characteristics of microchannels with various types of fins were ...
Murun Li   +6 more
doaj   +1 more source

Investigation of cooling performance degradation of impingement/effusion structure on pressure side of nozzle guide vane

open access: yesCase Studies in Thermal Engineering, 2022
The cooling performance of the impingent/effusion structure on the pressure side of nozzle guide vanes tested in an engine operating for the various duration of 100 h, 300 h, and 500 h was evaluated in this study via infrared thermal imaging.
Wei Zhang   +5 more
doaj   +1 more source

Experimental Study of Oxygen Depletion Effects on Soot Morphology and Nanostructure in Coflow Diffusion Aviation Fuel (RP-3) Flames

open access: yesEnergies, 2023
Oxygen concentration is a significant factor affecting soot formation and oxidation. However, there are few studies that have focused on the morphology and nanostructure characteristics of soot in aviation kerosene, oxygen-depleted combustion flames.
Jiaqi Guo   +5 more
doaj   +1 more source

Numerical and Experimental Verification of Spherically Layered Ice Model for Analysis on Hail Impacting Aviation Structures

open access: yesInternational Journal of Aerospace Engineering, 2022
Aviation structures are required to be resistant to impact damage from hail. Therefore, aiming to gain a better understanding of such impacts, the formation mechanisms, spherically layered structures, and layer-density distributions of real hail were ...
Gang Luo   +5 more
doaj   +1 more source

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