Adaptive Engine Technologies for Aviation CO2 Emissions Reduction

Mercer, Carolyn R.; Haller, William; Tong, Michael T.

doi:10.2514/6.2006-5105

Cited by 5 publications

(3 citation statements)

References 18 publications

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“…22 Using the NPSS tool to estimate the engine performance is the core feature of this analysis. The adaptive methods, whether active or passive, could be used in conjunction with a turbofan which minimizes CO 2 emissions on a system level to produce a more emissions conscious engine.…”

Section: A Multi-disciplinary Engine Studiesmentioning

confidence: 99%

Multi-Disciplinary Survey of Engine Parameters and its Impact on Performance and Energy Maneuverability

Gedeon

Takahashi

2014

14th AIAA Aviation Technology, Integration, and Operations Conference

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An Energy Maneuverability (E-M) point-performance approach is used to study the effects of changing engine parameters upon a baseline airframe. This work considers, as independent variables, the effects of overall engine scale factor (sea level static thrust), power extraction, bleed air extraction, bypass ratio, turbine inlet temperature, fan pressure ratio, and overall pressure ratio against a reference aerodynamic database. This design study integrates propulsion analyses developed using NASA's NPSS propulsion modelling language. The E-M "skymap" grids demonstrate relations between the independent variables and their resulting impact on overall aircraft performance across the flight envelope. The results show the negative impact of bleed air extraction and shaft power extraction and the positive effect of high bypass ratio engines on cruise performance and sustained turning fuel burn but the negative effects on the maximum thrust of the engine. Overall the methods and data capture the relationships between several engine designs and the resulting impact on aircraft performance using a grid contour display. Nomenclature AR= wing aspect ratio BPR = engine bypass ratio C D = dimensionless drag coefficient C L = dimensionless lift coefficient FPR = engine fan pressure ratio L/D = aerodynamic efficiency M = Mach number M(L/D) = aerodynamic performance efficiency OPR = overall pressure ratio PLA = power lever angle Ps = specific excess power ROC = rate-of-climb (ft/min) S ref = reference planform area of a wing surface (ft 2 ) SE = specific endurance (hr/lbm) SR = specific range (nM/lbm) T = thrust (lbf) TIT = turbine inlet temperature ( º R) TSFC = thrust specific fuel consumption (lbm/lbf-hr) T/W = thrust loading (thrust-to-weight ratio) W = aircraft flight weight (lbm)

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Section: A Multi-disciplinary Engine Studiesmentioning

confidence: 99%

Multi-Disciplinary Survey of Engine Parameters and its Impact on Performance and Energy Maneuverability

Gedeon

Takahashi

2014

14th AIAA Aviation Technology, Integration, and Operations Conference

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“…However, this development may result that the aviation emission is continually increasing which may lead to irreversible damage to the environment [2,3] . Besides, to create greater value for human activities, the operating cost of civil aircraft also should be paid more attention to [4,5] . Consequently, a very high level of eco-efficiency civil aircraft should be developed for aviation sustainable development, and there are some higher requirements for the development of future aircraft design, such as cost and emission [6,7] .…”

Section: Introductionmentioning

confidence: 99%

Civil Aircraft Multi-Objective Design Optimization for Cost and Emission Reduction

Tao

2023

J. Phys.: Conf. Ser.

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With the rapid development of civil air transportation network in recent decades, aviation emission is continually increasing which may lead to irreversible damage to the environment. Besides, the operating cost of civil aircraft also should be reduced for creating greater value for human activities. Consequently, eco-efficiency aircraft should be developed for aviation sustainable development, and there are some higher constraints on the aircraft design, especially on the cost and emission. In this research, the developed multi-objective design optimization technique, along with the aircraft general and aerodynamic design approach, as well as the operating cost model and integrated emission model, is used to conduct the aircraft concept design, leading to the minimum operating cost and emission. Further, the Pareto solution set, related to the temperature change which is caused by emission and cost, is obtained to conduct eco-efficiency aircraft design optimization.

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“…Despite the international consensus on the need to reduce greenhouse gas emissions, it is forecasted that the increase in CO 2 and NO x emissions from the aviation sector in 2050 may increase by 3.6× and 2.7×, respectively, compared to the year 2000 [12]. Significant research effort is put into reducing emissions and increasing the efficiency of aviation GT [13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Fuel-Water Emulsion as an Alternative Fuel for Gas Turbines in the Context of Combustion Process Properties—A Review

2022

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Fuel with the addition of water, forming fuel-water emulsions, is a potential way to reduce the emission of pollutants from gas turbines powered by any liquid fuel. This article analyzes the available work on the combustion of fuel-water emulsions in gas turbines. The literature analysis was preceded by a theoretical introduction on fuel-water emulsion, taking into account the factors influencing its micro- and macroscopic properties. The basic features of the agents used to stabilize the emulsion were also discussed and the process of its combustion was described. The analyzed research differed in terms of the test stands on which the experiments were conducted, the fuel constituting the continuous phase of the emulsion, the amount of water contained in the mixture and the method of producing the emulsion. On the basis of the conducted analysis, conclusions were drawn concerning the influence of feeding a gas turbine with a fuel-water emulsion on the emission of nitrogen oxides, carbon monoxide and exhaust smoke. Conclusions were formulated regarding the influence of the water additive to fuel-on-fuel consumption. In addition, the impact of the presence of water on the conversion of nitrogen contained in the fuel to nitrogen oxides was indicated, and areas requiring further research were presented.

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Adaptive Engine Technologies for Aviation CO2 Emissions Reduction

Cited by 5 publications

References 18 publications

Multi-Disciplinary Survey of Engine Parameters and its Impact on Performance and Energy Maneuverability

Multi-Disciplinary Survey of Engine Parameters and its Impact on Performance and Energy Maneuverability

Civil Aircraft Multi-Objective Design Optimization for Cost and Emission Reduction

Fuel-Water Emulsion as an Alternative Fuel for Gas Turbines in the Context of Combustion Process Properties—A Review

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