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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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Pratt & Whitney receives $2 billion to supply F-35 engines

Pratt & Whitney receives $2 billion to supply F-35 engines ile ilgili görsel sonucu

The Department of Defense awarded Pratt & Whitney a $2 billion contract to supply F135 turbofan engines for the Lot 11 order of F-35 Lightning II aircraft.
The 11th low rate initial production contract will cover 135 engines, as well as programme management, engineering support, production support, spare modules and spare parts, P&W said on 31 May 2018.
The company said it has delivered 375 F135 engines to date and deliveries of Lot 11 engines will start this year.
The $2 billion contract for F135 turbofan engines comes in addition to two long lead components, parts and materials contracts that P&W was awarded in August and November 2016. Those contracts totaled $185 million.
Including the long lead contracts, the average cost per engine for Lot 11 comes to roughly $16.2 million per unit. Engine unit prices vary as the conventional takeoff and landing Lockheed Martin F-35A engine is priced lower than the engine system for the vertical takeoff and landing variant F-35B, however.
Pratt & Whitney was awarded $1.95 billion to supply 99 F135 engines for Lot 10. The average cost per engine unit for Lot 10 was about $19.7 million. Thus, costs per engine declined more than 17% from Lot 10 to Lot 11.
Nonetheless, the jet engine manufacturer said it will only slightly reduce the unit recurring flyaway (URF) of the Lot 11 F135 engines compared Lot 10. Pratt & Whitney declined to disclose flyaway costs, sharing only cost reductions percentages.
The URF price for the 110 LRIP Lot 11 conventional takeoff and landing and carrier variant propulsion systems will be reduced 0.34% from the previously negotiated LRIP Lot 10 URF, according to the company. The URF price for the 25 LRIP Lot 11 short takeoff and vertical landing propulsion systems will be reduced 3.39% from the previously negotiated LRIP Lot 10 URF.