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‘Stealth Sheet’ Makes People And Vehicles Invisible To Drones By Suppressing Infrared Light

The stealth sheet was created by researchers that hope it will be used in battle. As weapons become more sophisticated with the advances in technology, so do the countermeasures to weapons. Researchers at the University of Wisconsin-Madison have invented the “stealth sheet,” which is a super thin sheet that can suppress infrared light. This can be used to mask people and vehicles that emit infrared light, which can normally be picked up by drones, heat-sensing night vision goggles, and infrared cameras, according to the Daily Mail. The stealth sheet is made out of a bendable silicon material, masks up to 94 percent of infrared light, and is only a millimeter wide. The co-author of the study, Hongrui Jiang, described the concept behind the invention. “You can intentionally deceive an infrared detector by presenting a false heat signature … It could conceal a tank by presenting what looks like a simply highway guardrail.” So far, the stealth sheet has been tested with a model of the hu…

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Rolls-Royce prepares to test blade fix for Trent 1000s

Trent 1000 ile ilgili görsel sonucu






Rolls-Royce is aiming to commence testing of a revised intermediate pressure compressor blade for troubled Trent 1000 engines next month, as it seeks to accelerate the introduction of new components to overhaul the powerplants.
The manufacturer has been dealing with a blade durability problem with the compressor rotor in the Package C version of the engine, which spurred an airworthiness directive for Trent-powered Boeing 787 operators in April.
Rolls-Royce civil aerospace president Chris Cholerton admits that the disruption to 787 operators is "unacceptable" but that the company remains committed to minimising the impact.
"While we expect the number of aircraft affected to rise in the short term, as the deadline for the completion of initial inspections approaches, we are confident that we have the right building-blocks in place to tackle the additional workload this will create," he adds.
The company says it has installed a revised blade in a test engine and will begin testing in early June. It is also aiming to make initial parts available later this year, instead of 2019.
Rolls-Royce states that efficiency in the supply chain and computing power have enabled its engineers to "accelerate" development of the new blade.
It also says that it has trebled maintenance capacity for affected Trent engines – through additional lines and reduced times – enabling it to work on a greater number of powerplants simultaneously, and developed new inspection techniques to support affected carriers.
Rolls-Royce has not adjusted its estimates of the financial effect of the issues surrounding the Package C engine fix.
“While we have made important progress in supporting our customers, there is clearly more to do," says Cholerton. "We will not rest until we have ensured the engine meets the high standards our customers rightly expect."
flightglobal.com
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