Results 111 to 120 of about 3,861 (237)

Optimal energy management for hybrid electric aircraft

open access: yes, 2021
A convex formulation is proposed for optimal energy management in aircraft with hybrid propulsion systems consisting of gas turbine and electric motor components. By combining a point-mass aircraft dynamical model with models of electrical and mechanical
Doff-Sotta, Martin   +2 more
core   +1 more source

Unmanned Aerial Systems for Corrosion Detection: Multi‐Sensor Technologies, Challenges, and Opportunities for Next‐Generation Inspection

open access: yesQuality and Reliability Engineering International, EarlyView.
ABSTRACT Corrosion remains a critical threat to the integrity and service life of infrastructure in industries such as oil, gas, construction, renewable energy, and transportation. Traditional inspection methods, being labor‐intensive, hazardous, and often subjective, fall short in addressing modern inspection demands.
Alhossein Alharbi   +3 more
wiley   +1 more source

Artificial neural network control strategies for fuel cell hybrid system [PDF]

open access: yes, 2013
The greening of air transport is the driver for developing technologies to reduce the environmental impact of aviation with the aim of halving the amount of carbon dioxide (COଶ) emitted by air transport, cutting specific emissions of nitrogen oxides ...
Oheda, Hakim
core  

Sliding Mode Control in Aerospace Applications: A Survey

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley   +1 more source

Hybrid electric propulsion systems for skydiving aircraft [PDF]

open access: yes
• Show viability of hybrid electric and all-electric aircraft concept for skydiving missions. • Push forward, investment in new electrical propulsion technology equipped light commuter category ...
Glassock, Richard   +3 more
core  

A comparative study of different propulsion models for hybrid electric aircraft

open access: yes, 2020
International audienceThis paper addresses the topic of multidisciplinary analysis (MDA) applied to hybrid electric aircraft (HEA) design focusing on the analysis of multi-fidelity models for hybrid electric powertrain design.
Jordan, Arnaud   +7 more
core  

A Comparison of Hybrid-Electric Aircraft Sizing Methods

open access: yes, 2020
The number of case studies focusing on hybrid-electric aircraft is steadily increasing, since these configurations are thought to lead to lower operating costs and environmental impact than traditional aircraft. However, due to the lack of reference data
Carsten Braun   +14 more
core   +1 more source

Deep Reinforcement Learning‐Based Control for Real‐Time Hybrid Simulation of Civil Structures

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Real‐time Hybrid Simulation (RTHS) is a cyber‐physical technique that studies the dynamic behavior of a system by combining physical and numerical components that are coupled through a boundary condition enforcer. In structural engineering, the numerical components are subjected to environmental loads that become dynamic displacements of the ...
Andrés Felipe Niño   +6 more
wiley   +1 more source

Concept Evaluation of Radical Short–Medium-Range Aircraft with Turbo-Electric Propulsion

open access: yesAerospace
Ambitious targets for the coming decades have been set for further reductions in aviation greenhouse gas emissions. Hybrid electric propulsion (HEP) concepts offer potential for the mitigation of these aviation emissions. To investigate this potential in
W. J. Vankan   +4 more
doaj   +1 more source

Range equation for hybrid-electric aircraft with constant power split

open access: yes, 2020
There has been a surge in research related to hybrid-/ electric propulsion (HEP) over the past decade, since this technology has the potential to reduce the energy consumption and in-flight emissions of commercial aircraft and, therefore, to bring the ...
Vos, Roelof (author)   +5 more
core   +1 more source

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