Aircraft Sales and Parts

Networks of sensors mounted on commercial aircraft might one day check continuously for the formation of structural defects, possibly reducing or eliminating scheduled aircraft inspections. Like nerve endings in a human body, in situ sensors offer levels of vigilance and sensitivity to problems that periodic checkups cannot, says Dennis Roach, who leads a Sandia National Laboratories team evaluating some of the first sensor systems for aircraft.

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New "fixed points" identified at high temperatures reduce the uncertainty of industrial heat treatments. One consequence is more efficient jet engines.

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Researchers have made strides in laser design, material growth and laser fabrication that have greatly increased the output power and wall-plug efficiency of quantum cascade lasers. They have demonstrated individual lasers, 300 of which can easily fit on a penny, emitting at wavelengths of 4.5 microns, capable of producing over 700 milliwatts of continuous output power at room temperature and more than one watt of output power at lower temperatures.

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