Results 101 to 110 of about 7,826 (224)

Integrated multi-functional morphing aircraft technologies

open access: yes, 2018
In the past years, the development of morphing wing technologies has received a great deal of interest from the scientific community. These technologies potentially enable an increase in aircraft efficiency by changing the wing shape, thus allowing the aircraft to fly near its optimal performance point at different flight conditions.
openaire   +2 more sources

Morphing Wing Weight Predictors and Their Application in a Template-Based Morphing Aircraft Sizing Environment II [PDF]

open access: yes
This report presents an approach for sizing of a morphing aircraft based upon a multi-level design optimization approach. For this effort, a morphing wing is one whose planform can make significant shape changes in flight - increasing wing area by 50% or
Crossley, William A.   +1 more
core   +1 more source

Actuators for smart applications [PDF]

open access: yes, 2010
Actuator manufacturers are developing promising technologies\ud which meet high requirements in performance, weight and\ud power consumption. Conventionally, actuators are characterized\ud by their displacement and load performance.
Akkerman, Remko   +3 more
core   +2 more sources

Morphing surfaces for the control of boundary layer transition [PDF]

open access: yes, 2016
A structure configured to modify its surface morphology between a smooth state and a rough state in response to an applied stress. In demonstrated examples, a soft (PDMS) substrate is produced, and is pre-strained. A relatively stiff overlayer of a metal,
Bhattacharya, Kaushik   +2 more
core  

Aerodynamic Optimization of Morphing Airfoil by PCA and Optimization-Guided Data Augmentation

open access: yesAerospace
An aircraft that has been carefully optimized for a single flight condition will tend to perform poorly at other flight conditions. For aircraft such as long-haul airliners, this is not necessarily a problem, since the cruise condition so heavily ...
Ao Guo, Jing Wang, Miao Zhang, Han Wang
doaj   +1 more source

Fuzzy Logic-Based Control for a Morphing Wing Tip Actuation System: Design, Numerical Simulation, and Wind Tunnel Experimental Testing

open access: yesBiomimetics, 2019
The paper presents the design, numerical simulation, and wind tunnel experimental testing of a fuzzy logic-based control system for a new morphing wing actuation system equipped with Brushless DC (BLDC) motors, under the framework of an international ...
Shehryar Khan   +4 more
doaj   +1 more source

Effect of Graphene Addition on Shape Memory Behavior of Epoxy Resins [PDF]

open access: yes, 2011
Shape memory polymers (SMPs) and composites are a special class of smart materials known for their ability to change size and shape upon exposure to an external stimulus (e.g. light, heat, pH, or magnetic field).
Meador, Michael   +3 more
core   +2 more sources

Non-linear controls influence functions in an aircraft dynamics simulator [PDF]

open access: yes
In the development and testing of novel structural and controls concepts, such as morphing aircraft wings, appropriate models are needed for proper system characterization. In most instances, available system models do not provide the required additional
Guerreiro, Nelson M.   +2 more
core   +1 more source

Review on the Structure Design of Morphing Winglets

open access: yesAerospace
Winglets have a significant impact on the aerodynamic performance of aircraft. When aircraft are in different flight phases such as takeoff, climb, cruise, descent, and landing, traditional fixed winglets often cannot provide optimal performance gains ...
Wenbo Wang, Guoqing Yuan
doaj   +1 more source

Review of smart materials actuator and flexible skin for morphing aircraft

open access: yesHangkong gongcheng jinzhan
Morphing aircraft can change its aerodynamic configurations to obtain optimized aerodynamic performance. Smart material actuator and flexible skin are the key technologies of morphing aircraft.
YANG Sen
doaj   +1 more source

Home - About - Disclaimer - Privacy