Talking about the materiality of reality, nothing better than use the space as a theoretical category and also as something measurable by witch we can apprehend the reality around us.
The human purpose is to find meaning in between the multiple meanings of realities. This process, in fact, has a historical dimension, in a sense that incorporate the manifestation of certain patterns of organizations that can be identified as structures of powers.
Friday, June 11, 2010
Sunday, June 6, 2010
A Sociedade do Futuro: Propulsores Atômicos
A velocidade da transformação sócio-técnica molda o futuro em formas cada vez mais imprevisíveis. Contudo, aquilo que pode nos aparecer enquanto um insight inovador muitas das vezes já são idéias antigas.
Esses dias pensava na possibilidade da criação de propulsores atômicos, que possibilitariam a eliminação dos gigantescos tanques de combustíveis necessários para a combustão dos foquetes espaciais. Entretanto, após uma busca na net o resultado é, entre outros: o Projeto Orion.
"Project Orion was the first engineering design study of a spacecraft powered by nuclear pulse propulsion, an idea proposed first by Stanisław Ulam during 1947. The project, initiated in 1958, envisioned the explosion of atomic bombs behind the craft and was led by Ted Taylor at General Atomics and physicist Freeman Dyson, who at Taylor's request took a year away from the Institute for Advanced Study in Princeton to work on the project.
By using energetic nuclear power, the Orion concept offered high thrust and high specific impulse (10 to 1,000 ks[1]) at the same time; the optimum combination for spacecraft propulsion. As a qualitative comparison, traditional chemical rockets (the Moon-class Saturn V or the Space Shuttle being prime examples) provide (rather) high thrust, but low specific impulse, whereas ion engines do the opposite. Orion would have offered performance greater than the most advanced conventional or nuclear rocket engines now being studied. Cheap interplanetary travel was the goal of the Orion Project. Its supporters felt that it had potential for space travel, but it lost political approval over concerns with fallout from its propulsion.[2] The Partial Test Ban Treaty of 1963 is generally acknowledged to have ended the project."
http://en.wikipedia.org/wiki/Project_Orion_%28nuclear_propulsion%29
Esses dias pensava na possibilidade da criação de propulsores atômicos, que possibilitariam a eliminação dos gigantescos tanques de combustíveis necessários para a combustão dos foquetes espaciais. Entretanto, após uma busca na net o resultado é, entre outros: o Projeto Orion.
"Project Orion was the first engineering design study of a spacecraft powered by nuclear pulse propulsion, an idea proposed first by Stanisław Ulam during 1947. The project, initiated in 1958, envisioned the explosion of atomic bombs behind the craft and was led by Ted Taylor at General Atomics and physicist Freeman Dyson, who at Taylor's request took a year away from the Institute for Advanced Study in Princeton to work on the project.
By using energetic nuclear power, the Orion concept offered high thrust and high specific impulse (10 to 1,000 ks[1]) at the same time; the optimum combination for spacecraft propulsion. As a qualitative comparison, traditional chemical rockets (the Moon-class Saturn V or the Space Shuttle being prime examples) provide (rather) high thrust, but low specific impulse, whereas ion engines do the opposite. Orion would have offered performance greater than the most advanced conventional or nuclear rocket engines now being studied. Cheap interplanetary travel was the goal of the Orion Project. Its supporters felt that it had potential for space travel, but it lost political approval over concerns with fallout from its propulsion.[2] The Partial Test Ban Treaty of 1963 is generally acknowledged to have ended the project."
http://en.wikipedia.org/wiki/Project_Orion_%28nuclear_propulsion%29
Subscribe to:
Posts (Atom)