01
A step in the angle of attack
The Pazy wing gets a step in the angle of attack and answers with a transient. Its tip rises to almost half the span, so the force on it is a nonlinear function of the shape.
Open the model →Mario A. Sinani · Dept. of Aeronautics · Imperial College London
Lab.
Six models from the papers, computed in the browser, each with one parameter that the visitor sets: the response of a wing to a step, the flutter band of a wing, the load relief of a flared hinge, the transfer of energy between the modes of a beam, an event-triggered plan, and the image of a coastline in a camera.
02
Flutter across the angle of attack
The Pazy wing at its trim, with the perturbation of one degree the paper applies. Between 3 and 4.6 degrees the perturbation grows; below and above the band it decays.
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03
A wing tip on a flared hinge
The flow starts, the wing bends up, and the tip on its flared hinge folds to the angle where its own lift carries it: 45 degrees at 10 degrees of incidence, as in the paper.
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04
Energy between the modes of a beam
A beam whose first bending mode and first axial mode exchange energy through a quadratic coupling. The bars are the energy in each mode, and the dashed line is the bound on the average.
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05
A plan only at an event
An octorotor follows a coastline, seen from above, on a plan it follows in an open loop. It plans again only when the measured state departs from the predicted one, or when the horizon ends.
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06
The coast in the camera
The coast as the downward camera sees it. The four corners of the detected box are the features, and the controller solves again only when the tracking departs from its prediction.
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