Results 11 to 20 of about 17,697 (215)
Volume 5: Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; Process Industries, 1983 Recent advances in the understanding of turbofan noise generation and suppression in aircraft engines are reviewed with particular emphasis on NASA research. The review addresses each link in the chain of physical processes which connect unsteady flow interactions with fan blades to far field noise.
J. F. Groeneweg, E. J. Rice
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Advanced Materials and Technologies for Compressor Blades of Small Turbofan Engines
Aerospace, 2020 Manufacturing costs, along with operational performance, are among the major factors determining the selection of the propulsion system for unmanned aerial vehicles (UAVs), especially for aerial targets and cruise missiles.
Dmytro Pavlenko +2 more
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The completion of the mathematical model by parameter identification for simulating a turbofan engine [PDF]
INCAS Bulletin, 2015 The purpose of this paper is to set up a method to determine the missing engine design parameters (turbine inlet temperature T3T, airflow rate) which significantly influence the jet engines thrust.
Irina Carmen ANDREI +3 more
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Identification of Noise Sources in a Realistic Turbofan Rotor Using Large Eddy Simulation
Acoustics, 2020 Large Eddy Simulation is performed using the NASA Source Diagnostic Test turbofan at approach conditions (62% of the design speed). The simulation is performed in a periodic domain containing one fan blade (rotor-alone configuration). The aerodynamic and
Pavel Kholodov, Stéphane Moreau
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Test Equipment Adding Electric Supercharger on Injection Machine for Biofuel Optimization [PDF]
E3S Web of Conferences, 2021 One of the problems that occur in our earth is air pollution and the depletion of fossil fuel stocks. Researchers want to make research on how the fuel burns completely, so that the resulting exhaust gas is environmentally friendly.
Umami Mahrus Khoirul +4 more
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Prospects for the use of hydrogen technologies in commercial civil aviation [PDF]
Przegląd Komunikacyjny, 2023 : The use of hydrogen technologies is the most effective way to decarbonise long- haul transport - including commercial aviation. Two leading technical solutions introducing hydrogen into the propulsion systems of civil airliners are the use of fuel ...
Jacek Nowicki
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Residue Cost Formation of a High Bypass Turbofan Engine
Applied Sciences, 2020 The kinetic energy produced by a turbofan engine is inseparable from the unavoidable generation of waste heat dissipated into the environment and the chemical exergy of exhaust gases. However, exergoeconomic cost analyses of these propulsion systems have
Lugo-Méndez Helen +5 more
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Energies, 2020 This study addresses the performance analysis of a subcritical and supercritical Organic Rankine Cycle (ORC) with the addition of a preheater or superheater integrated with a turbofan engine. This analysis will try to explore the heat transfer throughout
Syamimi Saadon, Nur Athirah Mohd Nasir
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Analysis of the Application and Benefits of Aircraft Electric Wheel Systems during Taxi and Take-Off
International Transactions on Electrical Energy Systems, 2023 An electric wheel hybrid power system is designed for driving a large single-aisle passenger aircraft during the take-off and ground taxi phases, which consists of an APU, an energy storage system, and a motor.
Shuang Sun +6 more
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DLR TAU-Code uRANS Turbofan Modeling for Aircraft Aerodynamics Investigations
Aerospace, 2019 In the context of an increased focus on fuel efficiency and environmental impact, turbofan engine developments continue towards larger bypass ratio engine designs, with Ultra-High Bypass Ratio (UHBR) engines becoming a likely power plant option for ...
Arne Stuermer
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