Results 61 to 70 of about 7,826 (224)

Dynamic Modeling and Simulation of Morphing Wing Aircraft Considering Rigid‐Elastic Coupling Effects

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT During the morphing process, the dynamic modeling of the morphing wing aircraft presents the characteristics of rigid‐elastic coupling effects, moving boundaries, and low computational efficiency. Meanwhile, parameters such as aerodynamic forces/moments, center of pressure, center of mass, and moment of inertia would also change significantly,
Xu Zha   +5 more
wiley   +1 more source

Span morphing using the compliant spar

open access: yes, 2014
This paper develops and models the Compliant Spar concept that allows the wing span to be varied to provide roll control and enhance the operational performance for a medium altitude long endurance (MALE) UAV.
Ajaj, R.M.   +3 more
core   +1 more source

Development of Vertical Wind Turbine Blades Using 4D Printing of Composites

open access: yesPolymer Composites, EarlyView.
Vertical axis wind turbine: White blade: Commercial. Black blade: Composite. ABSTRACT This paper presents the procedure to make vertical wind turbine blades using the technique of 4D printing of composites (4DPC). The blades are made using carbon/epoxy composite materials with a fiber volume fraction of about 60%.
Emad Fakhimi, Suong Van Hoa
wiley   +1 more source

Aerodynamic Modelling for a Morphing Rudder [PDF]

open access: yes, 2014
The appearance of new materials and smaller and more capable actuators enable the morphing controlled deformation of the aerodynamic shape of wing like type of structures.
Castillo Acero, Miguel Angel   +2 more
core  

Subterranean Mine Inspection Using the Prometheus Re‐Configurable Drone

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT This paper describes the design, development, and real‐world testing of an autonomous drone for subterranean exploration, known as “Prometheus.” Driven by requirements from industry that the drone be able to be deployed through areas of restricted access, Prometheus was designed to be directly deployed through a 150 mm aperture.
Liam Brown   +8 more
wiley   +1 more source

Bird strike resistance of a CFRP morphing leading edge

open access: yesComposites Part C: Open Access, 2021
The implementation of morphing technologies into the leading edge a regional aircraft wing promises some benefits in terms of reduction of perceived noise on the ground as well as reduction of fuel consumption.
Michael May   +5 more
doaj   +1 more source

Blueprint for efficient aircraft design [PDF]

open access: yes, 2011
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2011.Cataloged from PDF version of thesis.Includes bibliographical references (p.
Pineda, Elvine Philip B., II
core  

Highly Dynamic Soft Electrohydraulic Origami Actuators for Agile and Multimodal Robotic Locomotion

open access: yesSmartBot, EarlyView.
Most current soft robots still lag far behind their natural counterparts in both agility and speed, mainly attributed to the limited morphing modes and performance of soft actuators. Here, the authors report a new methodology of electrohydraulic origami (EHO) for creating powerful and multimodal soft actuators with large strain, high speed, lightweight,
Wenbo Li   +6 more
wiley   +1 more source

Dynamic Model and Analysis of Asymmetric Telescopic Wing for Morphing Aircraft

open access: yesMATEC Web of Conferences, 2016
Morphing aircraft has been the research hot topics of new concept aircrafts in aerospace engineering. Telescopic wing is an important morphing technology for morphing aircraft.
Chen Lili, Guo Zheng, Wang Wenkai
doaj   +1 more source

Evaluating machine learning models for multi‐species wildlife detection and identification on remote sensed nadir imagery in South African savanna

open access: yesWildlife Biology, EarlyView.
This research paper investigates the efficacy of leading machine learning (ML) models for detecting and identifying ungulate species in African savanna using nadir imagery from unmanned aerial vehicles (UAVs). Traditional aerial counting methods, while widely used, suffer from significant limitations in accuracy and precision, in part due to human ...
Paul Allin   +4 more
wiley   +1 more source

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