20 mars 2024 | International, Aérospatial
2 octobre 2018 | International, Terrestre
Army Looks to Nature to Improve Body Armor
Future soldiers will be better protected in combat by stronger and lighter body armor thanks to innovative work at the U.S. Army Research Laboratory. Materials science engineers are using nature as the inspiration for breakthroughs in additive manufacturing.
“My project is to design a system that can 3-D print armor ceramics that will allow production of parts with graded structures similar to an abalone structure in nature that will improve the ceramic armor's toughness and survivability with lower weight,” said Joshua Pelz, a materials science and engineering doctoral candidate at the University of California San Diego. He spent this summer working with Army scientists at ARL's Rodman Materials Science Laboratory at APG to design and build a unique 3-D printer.
Two syringes containing distinct, viscous ceramic slurries are connected to a custom-made auger and print head. Pelz took advantage of his computer programming skills to hack into the 3-D printer, tricking it into using its own fan controls to manipulate the ratio of materials being printed. He designed a custom auger and print head and even used the same 3-D printer to create those parts.
“Josh found a way to implement our ideas into that machine, take apart machine, take out the polymer FDM heads that are built into it, start to look at how to design the machine to incorporate our ceramic slurries and print those slurries into the head but then he had to do a lot of really basic work looking at how to actually hack the machine,” said Dr. Lionel Vargas-Gonzalez, Ceramics Synthesis and Processing team lead at the laboratory. “We've got people like Josh who were very gifted and talented and can bring all that kind of capability and use a lot to our advantage it's a huge benefit for us.”
Current processing techniques used to create ceramic armor are limited by how engineers can combine materials into a stronger composite material.
“For ceramics, that's a bit of a challenge because with you can't really do what a one-step additive manufacturing process like you could if a metal or a polymer,” Vargas-Gonzalez said. “We see this as a next avenue for armor because we're going to be able to, in theory, design armor in a way that we can attach multiple materials together into a single armor plate, and be able to provide ways for the armor to perform better than it can be just based on one material alone.”
Full article: http://science.dodlive.mil/2018/10/01/army-looks-to-nature-to-improve-body-armor/
Sur le même sujet
-
-
2 novembre 2018 | International, Aérospatial, Naval
Elbit Systems Selected to Provide Maritime UAS to the European Union Maritime Safety Agency
HAIFA, Israel, November 1, 2018 /PRNewswire/ -- Elbit Systems Ltd. (NASDAQ: ESLT) (TASE: ESLT) ("Elbit Systems") announced today that it was awarded a framework contract to provide maritime Unmanned Aircraft System (UAS) patrol services to be provided by the European Maritime Safety Agency (EMSA) to countries in the European Union. The contract that will be executed in cooperation with CEiiA is for a two-year base period and two single year option periods. If fully ordered, the total contract value is €59 million (approximately $68 million). Under the contract and in cooperation with CEiiA, a leading engineering company in Portugal, Elbit Systems will lease and operate its Hermes[TM] 900 Maritime Patrol and its Ground Control Station. A persistent long-range unmanned maritime surveillance system tailored for littoral and blue water operations, the Hermes 900 Maritime Patrol will feature maritime radar, an Electro Optic payload, Satellite Communication and an Automatic Identification System (AIS) receiver. Thus configured, the Hermes 900 Maritime Patrol will enable persistent monitoring of vast swathes of sea and long coastlines and effective identification of suspicious activities and potential hazards. Elad Aharonson, General Manager of Elbit Systems ISTAR Division, commented: "Having been selected by the European Union authorities is yet another vote of confidence in the Hermes 900 by following additional contract awards for this UAS in Europe, Asia Pacific, Latin America and Israel. Extensively deployed, the Hermes 900 family of UAS continuously expands its capabilities introducing the capability to operate in civilian airspace and integrating self-protection suites and stronger payloads." About Elbit Systems Elbit Systems Ltd. is an international high technology company engaged in a wide range of defense, homeland security and commercial programs throughout the world. The Company, which includes Elbit Systems and its subsidiaries, operates in the areas of aerospace, land and naval systems, command, control, communications, computers, intelligence surveillance and reconnaissance ("C4ISR"), unmanned aircraft systems, advanced electro-optics, electro-optic space systems, EW suites, signal intelligence systems, data links and communications systems, radios and cyber-based systems. The Company also focuses on the upgrading of existing platforms, developing new technologies for defense, homeland security and commercial applications and providing a range of support services, including training and simulation systems. For additional information, visit: http://elbitsystems.com, follow us on Facebook, Twitter or visit our official YouTube Channel. About CEiiA CEiiA is a Portuguese Centre of Engineering and Product Development that designs, implements and operates innovative products and services, alongside with its partners, for high-tech industries, such as, the aeronautics, unmanned aircraft systems, automotive, smart mobility, oceans and space. CEiiA offers complete solutions, covering all product development phases from concept to the production of small series or prototypes, and operation of intelligent systems and unmanned aircraft systems. CEiiA's Vision is to "Establish Portugal as a reference within the mobility industries, particularly in the development of technologies, products and systems, conceived, industrialized and operated from Portugal." This press release contains forward-looking statements (within the meaning of Section 27A of the Securities Act of 1933, as amended and Section 21E of the Securities Exchange Act of 1934, as amended) regarding Elbit Systems Ltd. and/or its subsidiaries (collectively the Company), to the extent such statements do not relate to historical or current fact. Forward-looking statements are based on management's expectations, estimates, projections and assumptions. Forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, as amended. These statements are not guarantees of future performance and involve certain risks and uncertainties, which are difficult to predict. Therefore, actual future results, performance and trends may differ materially from these forward-looking statements due to a variety of factors, including, without limitation: scope and length of customer contracts; governmental regulations and approvals; changes in governmental budgeting priorities; general market, political and economic conditions in the countries in which the Company operates or sells, including Israel and the United States among others; differences in anticipated and actual program performance, including the ability to perform under long-term fixed-price contracts; and the outcome of legal and/or regulatory proceedings. The factors listed above are not all-inclusive, and further information is contained in Elbit Systems Ltd.'s latest annual report on Form 20-F, which is on file with the U.S. Securities and Exchange Commission. All forward-looking statements speak only as of the date of this release. The Company does not undertake to update its forward-looking statements. Elbit Systems Ltd., its logo, brand, product, service and process names appearing in this Press Release are the trademarks or service marks of Elbit Systems Ltd. or its affiliated companies. All other brand, product, service and process names appearing are the trademarks of their respective holders. Reference to or use of a product, service or process other than those of Elbit Systems Ltd. does not imply recommendation, approval, affiliation or sponsorship of that product, service or process by Elbit Systems Ltd. Nothing contained herein shall be construed as conferring by implication, estoppel or otherwise any license or right under any patent, copyright, trademark or other intellectual property right of Elbit Systems Ltd. or any third party, except as expressly granted herein. Contacts: David Vaaknin VP, Head of Corporate Communications Tel: 972-77-2946691 Cell: 972-52-8000403 david.vaaknin@elbitsystems.com Dana Tal-Noyman Manager Corporate Communications & Digital Tel: 972-77-2948809 Cell: 972-54-9998809 dana.tal@elbitsystems.com SOURCE Elbit Systems Ltd. http://ir.elbitsystems.com/phoenix.zhtml?c=61849&p=irol-newsArticle&ID=2374625
-
8 avril 2021 | International, Aérospatial
BAE Systems to support international F-16 fighter fleet
The 10-year contract includes training, engineering support, specialized test equipment, and more than 1,200 support equipment items to ensure the availability of the F-16 fleet, one of the most versatile...