Results 21 to 30 of about 3,284 (194)

Hybrid Energy Storage Management Strategy for Electric Propulsion Aircraft Based on Three-Step Power Distribution

World Electric Vehicle Journal, 2021
To solve the problem of severe DC bus voltage fluctuations caused by frequent changes in the distributed electric propulsion aircraft load, and to further optimize the size and life of the hybrid energy storage system (HESS), this paper proposes a method
Hang Li, Taike Yao, Xuan Zhang, Feifei Bu, Luhui Weng   +4 more
doaj   +1 more source

Using Semicircular Sampling to Increase Sea-Wind Retrieval Altitude with a High-Altitude UAV Scatterometer

Drones, 2022
Currently, unmanned aerial vehicles (UAVs) are widely used due to their low cost and flexibility. In particular, they are used in remote sensing as airborne platforms for various instruments.
Alexey Nekrasov, Alena Khachaturian, Colin Fidge   +2 more
doaj   +1 more source

Aircraft Upset Recovery Strategy and Pilot Assistance System Based on Reinforcement Learning

Aerospace
The upset state is an unexpected flight state, which is characterized by an unintentional deviation from normal operating parameters. It is difficult for the pilot to recover the aircraft from the upset state accurately and quickly.
Jin Wang, Peng Zhao, Zhe Zhang, Ting Yue, Hailiang Liu, Lixin Wang   +5 more
doaj   +1 more source

The effect of heat recovery on the optimal values of helicopter turboshaft engine parameters

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2020
Recent studies related to fuel economy in air transport conducted in our country and abroad show that the use of recuperative heat exchangers in aviation gas turbine engines can significantly, by up to 20...30%, reduce fuel consumption.
H. H. Omar, V. S. Kuz'michev, A. O. Zagrebelnyi, V. A. Grigoriev   +3 more
doaj   +1 more source

Integrated airline recovery considering passengers’ decision-making under disruptions

Frontiers in Future Transportation
This paper investigates the integrated airline recovery problem by incorporating passengers’ decision-making, with disrupted passengers categorized into three types: those experiencing delays, those opting for refunds, and those denied boarding due to ...
Shuai Wu, Shuai Wu, Enze Liu, Rui Cao, Xu Zhang   +4 more
doaj   +1 more source

Operational control system of civil aicraft airborne equipment and scientific basis of its formation

Научный вестник МГТУ ГА, 2021
The system of operational control (SOC) of civil aircraft (CA) airborne equipment incorporates onboard equipment, as an object of control, means and programs of operational control, maintenance personnel of an operating enterprise, carrying out ...
S. V. Kuznetsov
doaj   +1 more source

Data‐Driven Materials Science for Energy‐Sustainable Applications

Advanced Materials, EarlyView.
Data‐driven approaches powered by artificial intelligence are transforming materials discovery for energy sustainability. This review examines how auto‐generated high‐quality materials databases and domain‐specific language models accelerate research in photovoltaics, thermoelectrics, batteries and magnetic materials. Applications involve extraction of
Jacqueline M. Cole
wiley   +1 more source

A Cryopreservation‐Based Supply Chain Strategy for Extrusion Bioprinting in Space

Advanced Materials Technologies, EarlyView.
Extrusion bioprinting on crewed space platforms requires a bioink that stays functional along the logistic chain. Here, cells and biomaterial ink travel separately, the cells cryopreserved and the ink cold stored, and are combined only minutes before printing.
Johannes Windisch, Max von Witzleben, Richard Frank Richter, Finn Dani, Constantin Greil, Sarah Duin, Anja Lode, Michael Gelinsky   +7 more
wiley   +1 more source

Smart three-dimensional processing of unconstrained cave scans using small unmanned aerial systems and red, green, and blue-depth cameras

International Journal of Advanced Robotic Systems, 2022
This article focuses on a novel three-dimensional reconstruction system that maps large archeological caves using data collected by a small unmanned aircraft system with red, green, and blue-depth cameras.
Guoxiang Zhang, Holley Moyes, YangQuan Chen   +2 more
doaj   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source