AIMC Topic: Wings, Animal

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Jump stabilization and landing control by wing-spreading of a locust-inspired jumper.

Bioinspiration & biomimetics
Bio-inspired robotics is a promising design strategy for mobile robots. Jumping is an energy efficient locomotion gait for traversing difficult terrain. Inspired by the jumping and flying behavior of the desert locust, we have recently developed a mi...

Design and analysis of aerodynamic force platforms for free flight studies.

Bioinspiration & biomimetics
We describe and explain new advancements in the design of the aerodynamic force platform, a novel instrument that can directly measure the aerodynamic forces generated by freely flying animals and robots. Such in vivo recordings are essential to bett...

Optimal pitching axis location of flapping wings for efficient hovering flight.

Bioinspiration & biomimetics
Flapping wings can pitch passively about their pitching axes due to their flexibility, inertia, and aerodynamic loads. A shift in the pitching axis location can dynamically alter the aerodynamic loads, which in turn changes the passive pitching motio...

Morphological self stabilization of locomotion gaits: illustration on a few examples from bio-inspired locomotion.

Bioinspiration & biomimetics
To a large extent, robotics locomotion can be viewed as cyclic motions, named gaits. Due to the high complexity of the locomotion dynamics, to find the control laws that ensure an expected gait and its stability with respect to external perturbations...

Experimental and numerical studies of beetle-inspired flapping wing in hovering flight.

Bioinspiration & biomimetics
In this paper, we measure unsteady forces and visualize 3D vortices around a beetle-like flapping wing model in hovering flight by experiment and numerical simulation. The measurement of unsteady forces and flow patterns around the wing were conducte...

An aerodynamic model for insect flapping wings in forward flight.

Bioinspiration & biomimetics
This paper proposes a semi-empirical quasi-steady aerodynamic model of a flapping wing in forward flight. A total of 147 individual cases, which consisted of advance ratios J of 0 (hovering), 0.125, 0.25, 0.5, 0.75, 1 and  ∞, and angles of attack α o...

Flow separation on flapping and rotating profiles with spanwise gradients.

Bioinspiration & biomimetics
The growth of leading-edge vortices (LEV) on analogous flapping and rotating profiles has been investigated experimentally. Three time-varying cases were considered: a two-dimensional reference case with a spanwise-uniform angle-of-attack variation α...

A review of compliant transmission mechanisms for bio-inspired flapping-wing micro air vehicles.

Bioinspiration & biomimetics
Flapping-wing micro air vehicles (FWMAVs) are a class of unmanned aircraft that imitate flight characteristics of natural organisms such as birds, bats, and insects, in order to achieve maximum flight efficiency and manoeuvrability. Designing proper ...

Analytical model and stability analysis of the leading edge spar of a passively morphing ornithopter wing.

Bioinspiration & biomimetics
This paper presents the stability analysis of the leading edge spar of a flapping wing unmanned air vehicle with a compliant spine inserted in it. The compliant spine is a mechanism that was designed to be flexible during the upstroke and stiff durin...

The effect of aspect ratio on the leading-edge vortex over an insect-like flapping wing.

Bioinspiration & biomimetics
Insect wing shapes are diverse and a renowned source of inspiration for the new generation of autonomous flapping vehicles, yet the aerodynamic consequences of varying geometry is not well understood. One of the most defining and aerodynamically sign...