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 Impresion 3D y otros avances en materiales

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Fecha de inscripción : 21/07/2014

MensajeTema: Impresion 3D y otros avances en materiales   Mar 26 Jul 2016 - 16:37


Agrego este tema porque creo que este es el camino que va a cambiar todo el futuro industrial del planeta y es importante considerarlo.

Para comenzar, incluyo un articulo de GE y los invito a reflexionar acerca del futuro de Fadea y Aerolineas Argentinas si siguen tardando mucho en invertir en este tema.



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MensajeTema: Re: Impresion 3D y otros avances en materiales   Mar 2 Ago 2016 - 17:53

NAVAIR Marks First Flight with 3-D printed, safety-critical parts


Story Number: NNS160729-25Release Date: 7/29/2016 3:26:00 PM

From Naval Air Systems Command Public Affairs

NAVAL AIR STATION PATUXENT RIVER, Maryland (NNS) -- Naval Air Systems Command (NAVAIR) marked its first successful flight demonstration of a flight critical aircraft component built using additive manufacturing (AM) techniques, July 29.

An MV-22B Osprey completed a test flight outfitted with a titanium, 3-D printed link and fitting assembly for the engine nacelle. This link and fitting assembly is one of four that secure a V-22's engine nacelle to the primary wing structure and will remain on the aircraft for continued evaluation. The flight was performed using the standard V-22 flight performance envelope.

"The flight went great. I never would have known that we had anything different onboard," said MV-22 Project Officer Maj. Travis Stephenson who piloted the flight.

AM uses digital 3-D design data to build components in layers of metal, plastic and other materials. The metal link and fitting assembly for this test event were printed at Naval Air Warfare Center Aircraft Division in Lakehurst, New Jersey.

Prior to this flight, multiple V-22 components built by Lakehurst and Penn State Applied Research Laboratory were tested at Patuxent River to validate performance.

"The flight today is a great first step toward using AM wherever and whenever we need to. It will revolutionize how we repair our aircraft and develop and field new capabilities - AM is a game changer," said Liz McMichael, AM Integrated Product Team lead. "In the last 18 months, we've started to crack the code on using AM safely. We'll be working with V-22 to go from this first flight demonstration to a formal configuration change to use these parts on any V-22 aircraft."

Naval aviation has employed additive manufacturing as a prototyping tool since the early 1990s and in recent years has begun the process of printing non-flight critical parts and tools. Today's demonstration is the first time a U.S. Navy aircraft flew with an AM part deemed essential to maintaining safe flight.

Navy officials envision a future where all parts can be made on-demand globally by fleet maintainers and operators, and our industry partners - stocking digital data instead of ordering, stocking and shipping parts. Today's flight is an important step toward achieving that vision.

Including the V-22 link and fitting assembly, McMichael and her team have identified six additional safety-critical parts they plan to build and test over the next year for three U.S. Marine Corps rotorcraft platforms: the V-22, H-1 and CH-53K. Three of the parts will be made out of titanium, while the other three will be stainless steel.

Even with the success of today's flight, NAVAIR officials advise that there is a lot work to do before deployed aircraft are flying in theater with 3-D printed, safety-critical parts.

"Our AM team has done some incredible work in a relatively short period of time - both internally through its production of aircraft components to be used in flight testing and externally through its liaison with industry and other government organizations," said Vice Adm. Paul A. Grosklags, NAVAIR commander. "Although the flight today is a great step forward, we are not trying to 'lead' industry in our AM efforts, but it is absolutely critical that we understand what it takes to successfully manufacture and qualify AM parts for flight in naval aircraft, which we expect will largely be manufactured by our industry partners. Where I believe we can 'lead' industry is in the development of the AM "digital thread," from initial design tools all the way to the flight line - securely maintained and managed through the life of an aircraft program."


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MensajeTema: Re: Impresion 3D y otros avances en materiales   Miér 3 Ago 2016 - 12:10

Makers On the Front Lines: The Army REF’s Ex Labs

Oct 23, 2013 22:49 UTC by Defense Industry Daily staff

What do a fresh look at what “logistics” means, the ongoing electronics revolution, new manufacturing techniques, and the social norms and movements arising from these trends, have in common? Within the US Army, the answer is the Rapid Equipping Force’s new Expeditionary Lab (“Ex Lab”), which incorporates and fosters those trends on the front lines of combat.

In simple terms, Expeditionary Labs are containerized low-volume mini-factories with an accompanying power module, and satellite communications. Inside, Ex Labs feature a small 5-axis CNC machine, lathe and welding/ soldering equipment, a 3D printer for fast production of parts, sewing and kit work, and basic facilities for assembling and diagnosing electronics.

Outside, they feature an attached generator module; the next version will be a hybrid generator/ solar/ battery module that builds on USMC and US Army experiments at Afghan Forward Operating Bases. When demand is low enough for supplementary power to keep up, off goes the generator.

The 3rd component is the most important, and consists of 4 people. One is a combat soldier who accompanies field units on missions, in order to discover needs, evaluate options, and get feedback about fielded items. A pair of engineers are accompanied by a former Special Forces operator, who adds a constant presence with deep field experience to discussions and designs.

Need a radar rain shroud? Ok, try this one. Need a custom designed sensor that includes motion detection, a microprocessor, GPS, and a radio, in order to monitor roads, buildings, or other specific items of interest? They built that. They can build more, but they aren’t really about volume production, and would rather use their satellite reachback to send out the plans and get lot production handled elsewhere.

If you define logistics as the art and science of getting materiel to a place where it can be effective, the 21st century has a few new wrinkles for you. If manufacturing can be widely dispersed and networked, it becomes possible to move information about a thing at nearly zero cost, then produce it at or near its locus of effectiveness.

Logistics as we currently understand it is never going away, but if you think in these terms, it becomes easier to understand the buzz around hyped new technologies like 3D printing/ Additive Manufacturing, the rapid miniaturization and plummeting cost of advanced 5-axis CNC milling machines, and the growing popularity of social phenomena like “Maker’s Fairs.”

It’s true that the current state of these technologies doesn’t allow them to replace conventional manufacturing, and isn’t expected to do so for a few decades at least. But that isn’t the point.

Instead, the REF’s Ex Labs offer these technologies a beachhead, using them to perform important tasks that can’t be done any other way. A pair are currently deployed to Afghanistan, and another is in Fort Belvoir, VA.

The next step may be even more revolutionary, as Ex Labs serve as hubs for the REF’s new ArmyCoCreate.com online initiative. Think of it as a focused, facilitated kind of crowdsourcing from qualified audiences. The REF is adding a very strong form of feedback loop with this step, tapping straight into the heart of a generation that has grown up online, leans toward entrepreneurship, and is coming of age amid Maker Fairs.

A Pleasantly Disruptive Future?

During his AUSA presentation, new REF Director Col. Silwa was asked about the future of these technologies within the Army supply chain. Volume production isn’t within reach yet, but what about smaller spares that are only needed occasionally? Could a larger or more advanced variant serve the front lines as a provider of those spares, cutting them out of the logistics chain and reducing repair down-times?

Silwa replied that Army Material Command has already fielded an initial stab at this, with their Mobile Parts Hospital. He added that if people can afford 3D Printing machines in their home, it’s not unimaginable that we could see them at lower echelons in the Army. The challenges probably won’t be technology, so much as communications for reachback to huge libraries of parts plans, and questions about what plans the Army is and isn’t willing to store on site.

If so, Ex Labs will act as carriers for a standard disruptive technology pattern, which starts out with significant deficits vs. conventional options, but develops at a faster pace and begins moving up the value chain.

Makers, take your marks….


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MensajeTema: Re: Impresion 3D y otros avances en materiales   Miér 3 Ago 2016 - 12:19

New UAV Can Launch from Underwater for Aerial Missions

Researchers at the Johns Hopkins University Applied Physics Laboratory in Laurel, Maryland, have developed an innovative unmanned aerial vehicle (UAV) that can stay on station beneath the water, then launch into the air to perform a variety of missions.


The Corrosion Resistant Aerial Covert Unmanned Nautical System — or CRACUNS — is a submersible UAV that can be launched from a fixed position underwater, or from an unmanned underwater vehicle (UUV). A team from APL’s Force Projection Sector worked with fabrication experts in the Research and Exploratory Development Department to create a new type of unmanned vehicle that can operate effectively in two very different arenas: air and water.

“Engineers at APL have long worked on both Navy submarine systems and autonomous UAVs,” said Jason Stipes of APL’s Sea Control Mission Area, project manager for CRACUNS. “In response to evolving sponsor challenges, we were inspired to develop a vehicle that could operate both underwater and in the air.” The resulting CRACUNS prototype system was developed and tested using internal research and development funding.

CRACUNS enables new capabilities not possible with existing UAV or UUV platforms. Its ability to operate in the harsh littoral (shore) environment, as well as its payload flexibility, enables a wide array of potential missions.

The most innovative feature of CRACUNS is that it can remain at and launch from a significant depth without needing structural metal parts or machined surfaces.

To make that possible, the team needed to overcome two big challenges. First, the APL team leveraged advances in additive manufacturing and novel fabrication techniques available at the Laboratory’s extensive fabrication facilities. The team fabricated a lightweight, submersible, composite airframe able to withstand the water pressure experienced while submerged.

The second significant challenge was to ensure CRACUNS could not just survive, but operate effectively in a corrosive saltwater environment. To do that, the APL team sealed the most sensitive components in a dry pressure vessel. For the motors that are exposed to salt water, APL applied commercially available protective coatings. The team tested the performance of the motors by submerging them in salt water. Two months later, they showed no sign of corrosion and continued to operate while submerged.

“CRACUNS successfully demonstrated a new way of thinking about the fabrication and use of unmanned systems,” said APL’s Rich Hooks, an aerospace and mechanical engineer who was responsible for the novel additive manufacturing techniques used on CRACUNS.

CRACUNS gives sponsors and researchers access to possibilities that were previously unavailable. CRACUNS’ low cost makes it expendable, allowing for the use of large numbers of vehicles for high-risk scenarios.

“APL’s culture of innovation and mission-ready solutions continues to deliver success for our sponsors,” said Sea Control Mission Area Executive Christopher Watkins.


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