Results 61 to 70 of about 7,248 (202)

How Does a Delicate Insect Wing Resist Damage? Chitin Orientation Is Adapted to the Mechanical Demands at the Nanoscale

open access: yesAdvanced Materials, Volume 37, Issue 51, December 23, 2025.
Nanoscale chitin fiber orientations in the insect wing play a critical role in adapting to complex mechanical demands. These findings reveal two distinct and functionally adaptive chitin orientation patterns in the membranes that vary regionally, optimizing mechanical resilience and deformation control.
Chuchu Li   +5 more
wiley   +1 more source

A Vectoring Thrust Coaxial Rotor for Micro Air Vehicle: Modeling, Design and Analysis [PDF]

open access: yes, 2013
The growing interest of rotary wing UAVs, for military and civilian applications, has encouraged designers to consider miniaturized configurations, more efficient in terms of endurance, payload capability and maneuverability. The purpose of this paper is
Moschetta, Jean-Marc, Prothin, Sebastien
core   +2 more sources

A Study on the Effect of Structural Compliance Placing in Soft Contact/Collision Properties of Multirotor Micro Aerial Vehicles

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 7, July 2025.
This article answers the question “Where is the best place to apply compliance in a multirotor micro aerial vehicle to make it more collision‐resilient?” by analyzing the output data of more than 1200 drone collision tests for four main configurations of micro‐quadcopters each possessing a unique softness layout of physical frame.
Amirali Abazari   +3 more
wiley   +1 more source

Real-Time Fixed-Order Lateral H2 Controller for Micro Air Vehicle

open access: yesJournal of Control Science and Engineering, 2011
This paper presents the design and development of a fixed low-order, robust H2 controller for a micro air vehicle (MAV) named Sarika-2. The controller synthesis uses strengthened discrete optimal projection equations and frequency-dependent performance ...
Meenakshi M., M. Seetharama Bhat
doaj   +1 more source

Aerodynamic Ground Effect in Fruitfly Sized Insect Takeoff. [PDF]

open access: yesPLoS ONE, 2016
Aerodynamic ground effect in flapping-wing insect flight is of importance to comparative morphologies and of interest to the micro-air-vehicle (MAV) community.
Dmitry Kolomenskiy   +5 more
doaj   +1 more source

Performance Enhancement of Tilt-Body Micro Air Vehicle by Use of Orthotropic Laminated Proprotors [PDF]

open access: yes, 2016
A passive twist control is considered as an adaptive way to maximize the overall efficiency of a proprotor developed for convertible Micro Air Vehicles (MAV).
Bénard, Emmanuel   +5 more
core   +2 more sources

An Aerial Robot Achieving Bimodal Flight and Independent Attitude Control through Passive Morphing

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 7, July 2025.
This article presents a bimodal aerial robot capable of operating in both standard quadcopter and revolving flight modes. With four rotors, it independently controls position and roll‐pitch attitude across five degrees of freedom. The design features passive revolute joints, allowing seamless mid‐air transitions between modes using centrifugal forces ...
Jihao Xu, Pakpong Chirarattananon
wiley   +1 more source

Effect of Wing Corrugation on the Aerodynamic Efficiency of Two-Dimensional Flapping Wings

open access: yesApplied Sciences, 2020
Many previous studies have shown that wing corrugation of an insect wing is only structurally beneficial in enhancing the wing’s bending stiffness and does not much help to improve the aerodynamic performance of flapping wings.
Thanh Tien Dao   +3 more
doaj   +1 more source

CFD simulation of flow past MAV wings [PDF]

open access: yes, 2011
Turbulent flow past low aspect ratio (AR) thin wing used for two different MAV (Micro Air Vehicles) configurations viz. Black Kite and Golden Hawk has been carried out in order to analyze their aerodynamic characteristics.
Kulkarni, DS   +3 more
core  

Sensing unsteady pressure on MAV Wings: a new method for turbulence alleviation [PDF]

open access: yes, 2014
Experiments at low Reynolds numbers were performed on a pressure tapped NACA2313 wing in a 3 x 2 x 9 meter wind tunnel under nominally smooth (Ti = 1.2%) and turbulent (Ti = 7.2%) flows at a mean flow velocity of 8ms-1 (Re ≈ 120,000).
Gardi, A   +3 more
core   +1 more source

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