Results 71 to 80 of about 139,402 (244)
The effect of twist morphing on aerodynamic performance of finite wing at low Reynolds number [PDF]
This study experimentally investigates the effect of twist morphing on the aerodynamic characteristics of a finite wing at low Reynolds numbers (Re). As the base model, a NACA 0018 airfoil with an aspect ratio of 4 is used.
Gunes Yasemin B. +4 more
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The Energy Benefits of the Pantograph Wing Mechanism in Flapping Flight: Case Study of a Gull [PDF]
Bird wings generally contain a 4-bar pantograph mechanism in the forearm that enables the wrist joint to be actuated from the elbow joint thus reducing the number of wing muscles and hence reducing the wing inertia and inertial drag.
Sattler, Gene D.
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SMA actuators for morphing wings
AbstractAn experimental morphing laminar wing was developed to prove the feasibility of aircraft fuel consumption reduction through enhancement of the laminar flow regime over the wing extrados. The morphing wing prototype designed for subsonic cruise flight conditions (Mach 0.2…0.3; angle of attack −1…+2∘), combines three principal subsystems: (1 ...
Brailovski, V. +3 more
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Drag Performance of Twist Morphing MAV Wing
Morphing wing is one of latest evolution found on MAV wing. However, due to few design problems such as limited MAV wing size and complicated morphing mechanism, the understanding of its aerodynamic behaviour was not fully explored.
Ismail N.I. +4 more
doaj +1 more source
Design, development and testing of shape shifting wing model [PDF]
The design and development of morphing (shape shifting) aircraft wings—an innovative technology that has the potential to increase the aerodynamic efficiency and reduce noise signatures of aircrafts—was carried out.
Dakka, Sam, Ninian, Dean
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Design and Shear Analysis of an Angled Morphing Wing Skin Module
Morphing wing skin can greatly improve the performance of aircraft by adjusting the shape of the wings according to different flight conditions. However, it is a challenge to maintain a smooth aerodynamic wing skin surface during the deformation process.
Jinrui Yu, Jiayao Ma
doaj +1 more source
Morphing wing optimization for steady level flight
This paper presents the basic results of the morphing wing planform optimization of an experimental unmanned air vehicle for minimum drag at steady level flight. The aerodynamic design tool that consists of the three-dimensional panel method, two-dimensional boundary layer solution and generalized reduced gradient method-based optimization is ...
Korpe, Durmus S., Ozgen, Serkan
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Aerodynamics of the Cupped Wings during Peregrine Falcon’s Diving Flight [PDF]
During a dive peregrine falcons can reach velocities of more than 320 km/h and makes themselves the fastest animals in the world. The aerodynamic mechanisms involved are not fully understood yet and the search for a conclusive answer to this fact ...
Brücker, C., Ponitz, B., Triep, M.
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New aeroelastic studies for a morphing wing
For this study, the upper surface of a rectangular finite aspect ratio wing, with a laminar airfoil cross-section, was made of a carbon-Kevlar composite material flexible skin. This flexible skin was morphed by use of Shape Memory Alloy actuators for 35 test cases characterized by combinations of Mach numbers, Reynolds numbers and angles of attack. The
Ruxandra Mihaela BOTEZ* +2 more
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Variable geometry wing-box: toward a robotic morphing wing. [PDF]
The ability to vary the geometry of a wing to adapt to different flight conditions can significantly improve the performance of an aircraft. However, the realization of any morphing concept will typically be accompanied by major challenges. Specifically, the geometrical constraints that are imposed by the shape of the wing and the magnitude of the air ...
openaire +1 more source

