Programação: Aguardem novas informações Palestras confirmadas: AVIAÇÃO E DIREITO - Alessandro Laender QUEBRANDO RECORDES - Gúnar A. Halbolt IMPLEMENTAÇÃO DE EXPERIMENTOS EM MICROGRAVIDADE - José Bezerra e Kátia Scortecci SEGURANÇA DE VOO - Paulo Serra AVIAÇÃO E DIREITO - Sérgio Mourão
Microlattice - O metal mais leve do mundo (Boeing)
Boeing afirma ter criado o metal mais leve do mundo
This is the world's lightest metal - Microllatice by Boeing
Um metal composto de ar pode soar como algo impossível, mas a Boeing quer provar esse conceito e aplicá-lo na indústria aeronáutica. A maior fabricante de aviões do mundo afirma ter criado o “metal mais leve do mundo”, composto por “99,99% de ar”. A tecnologia foi elaborada em parceria com a Universidade da Califórnia, o HRL Laboratories e o Instituto de Tecnologia da Califórnia, nos Estados Unidos.
Como explica a Boeing, o material é composto de inúmeros microtubos metálicos mais finos que um fio de cabelo entranhados entre si para formar uma malha fina, leve e ultrarresistente – por isso a fabricante diz que seu novo metal é composto na maior parte por ar.
No vídeo divulgado pela fabricante, a pesquisadora Sophia Yang, no HRL Laboratories, explica o conceito utilizando o cenário de um ovo caindo de um prédio de 25 andares para destacar as potencialidades do novo metal. De acordo com Sophia, enquanto normalmente seria necessário envolver o ovo em inúmeros metros quadrados de plástico bolha para ele não quebrar após a queda, bastariam apenas algumas camadas do novo metal para protegê-lo.
A Boeing afirma que o metal, devido a forma de sua composição, é capaz de absorver grandes forças de impacta sem transferi-las para seu interior. Segundo declarações da doutora Yang, usar esse material mais leve na fabricação de aviões pode colaborar consideravelmente para a economia de combustível.
English version:
A few years ago, researchers created the world's lightest metal for Boeing, and now the airline has shown it off for the first time in this new video. Called microlattice, the material is 100 times lighter than styrofoam but is as rigid as metal, which means that it has some pretty exciting applications - not limited to being able to balance on top of a dandelion.
Microlattice was inspired by the structure of our bones, which are very rigid on the outside but mostly hollow on the inside, which means they can't be easily crushed, but are lightweight enough for us to carry around all day. The new Boeing metal mimics this, and despite its rigid exterior, it has a 3D open-cellular polymer structure, which means its structure is 99.99 percent air.
The lattice in the metal is made up of interconnected hollow metal tubes - constructed from nickel, in the case of the prototype. Each of these tubes has a wall thickness of just 100 nanometres, which is 1,000 times thinner than human hair.
These open cells in the structure give microlattice huge compression potential, which means it can absorb a whole lot of energy.
In the video above, Sophia Yang, a research scientist at HRL Laboratories (a joint Boeing venture), explains that the microlattice could be used in something like the egg drop challenge, to protect an egg being dropped from 25 storeys with very little material required. By comparison, you'd need to wrap an egg in around a metre (or just over three feet) of bubble wrap to keep it safe when dropped the same distance.
That means that it could help Boeing build aeroplanes that are significantly lighter - but just as tough - as today's models. "In the future the material could help Boeing save a lot of weight make aeroplanes more fuel efficient," Yang explains.
HRL laboratories also does research and development from General Motors, so we may see the material pop up in automobiles in the future too.
Fontes: Cnet / Uol
Via sciencealert.com
Learn more about Boeing Innovations at http://www.boeing.com/innovation/
"Avião? O avião me fascina! Eu não conseguiria viver uma vida inteira, sem me envolver com um deles..."
17 de Outubro - Dia da Indústria Aeronáutica Brasileira
23 de Outubro - Dia do Aviador
23 de Outubro - Dia da Força Aérea Brasileira
28 de Outubro - Dia da Engenharia da Aeronáutica
"Não me importaria de morrer num avião. Seria uma boa forma de ir. Não quero morrer dormindo, ou de idade ou de overdose. Quero sentir como é. Quero saborear, ouvir, sentir o cheiro disso. A morte só vai acontecer uma vez; não quero perdê-la."
Jim Morrison
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Ciclo de Palestras UNA sobre Segurança de Voo Aplicada à Manutenção Mecânica de Aeronaves.
Evento voltado especialmente para o mecânico de aeronaves, com palestrantes que atuam na área há bastante tempo. O Ciclo de Palestras tem como objetivo principal o foco na manutenção como atividade inerente à segurança de voo, já que geralmente só se fala sobre esse assunto relacionado à tripulação..
Inscrições GRATUITAS (com certificado e cofee break inclusos).
Show de aeromodelos (jatos), Gincana, Encontro e Churrasco. Data: 10 e 11 de outubro de 2015 partir das 08:30 / Local: Pista do Clube AMA - Rua Star, 522 - Jardim Canadá - BR 040, Km 545 - Minas Gerais / Categorias: Todas / Organização: Associação Mineira de Aeromodelismo - AMA / Informações: Fone: (31) 9747-4922 c/ Jocelio Aquino
Muitas atrações: Apresentações de Jatos e Giants. Certeza de muita adrenalina!! Gincana com provas de tirar o fôlego.
Estamos te esperando - Associação Mineira de Aeromodelismo
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Drone gigante do Facebook está pronto para iniciar os testes de voo
:: Facebook ready to test giant drone for Internet service ::
O Drone gigante, divulgado por Mark Zuckerberg, está pronto para iniciar os testes com o objetivo de levar acesso a internet para lugares desprovidos de estrutura de telecomunicações.
O drone, conhecido como AQUILA, o drone foi desenhado por uma equipe do “Connectivity Lab”, braço do Facebook voltado para desenvolver a plataforma do Internet.org, no Reino Unido.
Além do drone, a divisão do laboratório do Facebook na Califórnia vinha desenvolvendo a possibilidade de se transmitir dados (para garantir a conexão) via lasers. Segundo o vice-presidente de engenharia e infraestrutura Jay Parikh, testes realizados em laboratório foram satisfatórios. Ele explica que pelo laser, eles conseguem transmitir dados a 10 Gbps – velocidade 10 vezes maior que o alcançado pela indústria hoje.
Veja abaixo as últimas notícias sobre o Drone Gigante do Facebook: (English)
MENLO PARK, Calif. – Facebook says it will begin test flights later this year for a solar-powered drone with a wingspan as big as a Boeing 737, in the next stage of its campaign to deliver Internet connectivity to remote parts of the world.
Engineers at the giant social network say they've built a drone with a 140-foot wingspan that weighs less than 1,000 pounds. Designed to fly at high altitudes for up to three months, it will use lasers to send Internet signals to stations on the ground.
Though Facebook is better known for online software that lets people share news with friends, watch viral videos — and view commercial advertising — engineers in a unit called the Connectivity Lab are working on a different set of problems.
For one thing, they are designing a laser communications system they hope will be accurate enough to hit a target the size of a dime at a distance of 11 miles, said Yael Maguire, director of the unit, which is responsible for drones, satellites and other high-tech communications projects.
"There's a lot of moving parts here that have to work in concert," said Maguire, during a press briefing at the company's headquarters.
The project is part of a broader Facebook effort that also contemplates using satellites and other high-tech gear to deliver Internet service to hundreds of millions of people living in regions too remote for conventional broadband networks.
Other tech companies have launched similar initiatives. Google is experimenting with high-altitude balloons as well as drones and satellites. Microsoft has funded a project that will transmit Internet signals over unused television airwaves.
Facebook also has a separate but related initiative that works with wireless carriers to provide limited mobile Internet service at no cost, in countries where residents are too poor to afford traditional wireless plans.
But the company invited reporters Thursday to hear an update on its effort to provide service to about 10 percent of the world's population who live in regions where it's not practical or too expensive to build the usual infrastructure for Internet service.
Facebook's drone was developed in part with engineering expertise that joined the company when it acquired a British aerospace startup, Ascenta, last year. Facebook engineering vice president Jay Parikh said the team created a design that uses rigid but light-weight layers of carbon fiber, capable of flying in the frosty cold temperatures found at high altitudes, for an extended period of time.
The plan calls for using helium balloons to lift each drone into the air, Parikh said. The drones are designed to climb to 90,000 feet, safely above commercial airliners and thunderstorms, where they will fly in circles through the day. At night, he said, they will settle to about 60,000 feet to conserve battery power.
Each drone will fly in a circle with a radius of about 3 kilometers, which the engineers hope will enable it to provide Internet service to an area with a radius of about 50 kilometers.
For the plan to work, Facebook's engineers are also counting on a recent breakthrough they've made in laser optics, which Maguire said would allow them to transmit data at up to 10 gigabits per second. That's comparable to fiber networks on the ground but about 10 times faster than standard laser signals, he said.
Facebook is designing the drones to transmit signals from one aircraft to another, so they can relay signals across a broader area on the ground, he added.
While Facebook has built and tested smaller prototypes at a plant in the United Kingdom, it's looking at a site in the United States for testing the full-sized drone, said Parikh, who declined to be more specific.
Facebook hopes to share the technology with telecommunications carriers and development agencies, which it hopes will build and operate the drone networks, Parikh said. "We're not going to operate this ourselves," he added. "We're focused on finding ways to drive the industry to move faster."
CEO Mark Zuckerberg has acknowledged Facebook's business will benefit in the long run if more people gain Internet access, but he says the effort isn't driven by profit-seeking. Instead, he has said it's based on the conviction that Internet service can bring a variety of economic and social benefits to developing nations.
France: La chronique d'Anthony Morel: Aquila, un drone pour concrétiser l'accès universel au net - 29/09
