Saturday, 25 August 2018

NASA uses shape memory alloy to fold F-18 wing

An F-18 wing section with a memory alloy actuator installed undergoing testing

NASA engineers have added a new twist to a cutting edge aerospace technology by demonstrating how a new Shape Memory Alloy (SMA) actuator can fold a 300-lb (136 kg) wing section from an F/A-18 Hornet supersonic fighter plane. Taking place at NASA's Armstrong Flight Research Center in Edwards, California, the test involved replacing the folding mechanism a Hornet wing tip with a high-temperature SMA torque-tube actuator made of a newly developed nickel-titanium-hafnium alloy that generated 5,000 in-lb (564 Nm) of torque.

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Category: Aircraft

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