EABSYS: electrically actuated braking system

Collins, Angela C.

doi:10.1049/ic:19990833

Cited by 10 publications

(4 citation statements)

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“…Predicted loads showed reasonable agreement with published loads from the ELGEAR project [37] (for Airbus A320 aircraft). Wheel Braking System (WBS) actuation requirements are computed using constraining static and dynamic braking cases [30,35,38]. Thrust reverser power requirements are expressed using a relationship that relates required power linearly to rated sea-level static engine thrust, which was developed using limited available data [34,39].…”

Section: A Brief Overview Of Issaac Subsystem Modulesmentioning

confidence: 99%

Integrated Sizing and Optimization of Aircraft and Subsystem Architectures in Early Design

Rajaram

Cai

Chakraborty

et al. 2018

Journal of Aircraft

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The aerospace industry's current trend towards novel or More Electric architectures results in some unique challenges for designers due to both a scarcity or absence of historical data and a potentially large combinatorial space of possible architectures. These add to the already existing challenges of attempting to optimize an aircraft design in the presence of multiple possible objective functions while avoiding an overly compartmentalized approach. This paper uses the Integrated Subsystem Sizing and Architecture Assessment Capability to pursue a multi-objective optimization for a Large Twin-aisle Aircraft and a Small Single-aisle Aircraft using the Non-dominated Sorting Genetic Algorithm II with parallel function evaluations. One novelty of the optimization setup is that it explicitly considers the impacts of subsystem architectures in addition to those of traditional aircraft-level design variables. The optimization yielded generations of non-dominated designs in which substantially electrified subsystem architectures were found to predominate. As a first assessment of the impact of epistemic uncertainty on the results obtained, the optimization was re-run with altered sensitivities for the thrust-specific fuel consumption penalties due to shaft-power and bleed air extraction. This analysis demonstrated that the composition of architectures on the Pareto frontier is sensitive to the secondary power extraction penalties, but more so for the Small Single-aisle Aircraft than the Large Twin-aisle Aircraft.

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Section: A Brief Overview Of Issaac Subsystem Modulesmentioning

confidence: 99%

Integrated Sizing and Optimization of Aircraft and Subsystem Architectures in Early Design

Rajaram

Cai

Chakraborty

et al. 2018

Journal of Aircraft

View full text Add to dashboard Cite

show abstract

“…Wheel Braking System (WBS) actuation requirements are computed using constraining static and dynamic braking cases. 30,36,39 Thrust reverser power requirements are expressed using a relationship that relates required power linearly to rated sea-level static engine thrust, which was developed using limited available data. 35,40 For each of these systems, the hydraulic or electric actuator masses are determined based on the actuation load/power that they are sized for.…”

Section: Iiia Brief Overview Of Issaac Subsystem Modulesmentioning

confidence: 99%

Integrated Sizing and Multi-objective Optimization of Aircraft and Subsystem Architectures in Early Design

Rajaram

Cai

Puranik

et al. 2017

17th AIAA Aviation Technology, Integration, and Operations Conference

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The aerospace industry's current trend towards novel or More Electric architectures results in some unique challenges for designers due to both a scarcity or absence of historical data and a potentially large combinatorial space of possible architectures. These add to the already existing challenges of attempting to optimize an aircraft design in the presence of multiple possible objective functions while avoiding an overly compartmentalized approach. This paper uses the Integrated Subsystem Sizing and Architecture Assessment Capability to pursue a multi-objective optimization for a Large Twin-aisle Aircraft and a Small Singleaisle Aircraft using the Non-dominated Sorting Genetic Algorithm II with parallel function evaluations. One novelty of the optimization setup is that it explicitly considers the impacts of subsystem architectures in addition to those of traditional aircraft-level design variables. The optimization yielded generations of non-dominated designs in which substantially electrified subsystem architectures were found to predominate. As a first assessment of the impact of epistemic uncertainty on the results obtained, the optimization was re-run with altered sensitivities for the thrust-specific fuel consumption penalties due to shaft-power and bleed air extraction. This analysis demonstrated that the composition of architectures on the Pareto frontier is sensitive to the secondary power extraction penalties, but more so for the Small Single-aisle Aircraft than the Large Twin-aisle Aircraft.

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“…• Rotor inertia which increases electromagnetic torque for high dynamic application [11] or when jamming or brutal stop [40] • Rotor inertia : bandwidth effect [41] •…”

Section: Mechanical Componentsmentioning

confidence: 99%

Optimal preliminary design of electromechanical actuators

Budinger

Reysset

Halabi

et al. 2013

Proceedings of the Institution of Mechanical Engineers, Part G:

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This paper presents a methodology for the optimal preliminary design of electro-mechanical actuators. The main design drivers, design parameters and degrees of freedom that can be used for preliminary design and optimization of EMA are described. The different types of models used for model based design (estimation, simulation, evaluation and meta-model), and their associations are presented. The process preferred for its effectiveness in terms of flexibility and computational time is then described and illustrated with the example of a spoiler electromechanical actuator. The proposed approach, based on meta-models obtained using the surfaces response methods and scaling laws models, is used to explore the influence of anchorage points and transmission ratio on the different design constraints and the overall mass of the actuator.

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EABSYS: electrically actuated braking system

Cited by 10 publications

References 0 publications

Integrated Sizing and Optimization of Aircraft and Subsystem Architectures in Early Design

Integrated Sizing and Optimization of Aircraft and Subsystem Architectures in Early Design

Integrated Sizing and Multi-objective Optimization of Aircraft and Subsystem Architectures in Early Design

Optimal preliminary design of electromechanical actuators

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