Composite metal foam outperforms aluminum for use in aircraft wings

The leading edges of aircraft wings have to meet a very demanding set of characteristics. New research shows that a combination of steel composite metal foam and epoxy resin has more desirable characteristics for use as a leading-edge material than the aluminum currently in widespread use.

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Experiment measures velocity in 3D

Many of today's scientific processes are simulated using computer-driven mathematical models. But for a model to accurately predict how air flow behaves at high speeds, for example, scientists need supplemental real life data. Providing validation data, using up-to-date methods, was a key motivating factor for a recent experimental study.

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Volleyball: The secret to sneaky float serves

A team of researchers performed wind tunnel experiments to determine the role of asymmetry caused by the orientation of a volleyball on its aerodynamic characteristics. They found that switching from the standard panel arrangement to a hexagonal or dimpled pattern may improve the consistency of flight, with many potential applications in aviation.

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Revamped crew scheduling model cuts airline delays by as much as 30%

Delays and disruptions in airline operations annually result in billions of dollars of additional costs to airlines, passengers and the economy. Airlines strive to mitigate these costs by creating schedules that are less likely to get disrupted or schedules that are easy to repair when there are disruptions — new research has found a solution using a mathematical optimization model.

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A new approach to touch-screen set-up position for best physical workload and visibility

This study aimed to propose a new method for a bi-objective optimization. Ten student participants used a touch screen at 3 different installation heights, 3 tilt angles and with 3 button sizes. The joint angles, while using a touch screen, were measured to estimate physical workload. With the subjective screen visibility determined, the Pareto optimal solution showed ranges of 1124-1251 mm height and 44.4-67.9° tilt angle for the optimal installation of touch screens.

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