espaçonave

Rússia deve testar motor nuclear para espaçonaves até 2018


A Rússia planeja testar um motor nuclear para foguetes espaciais até 2018, afirmou Sergey Kiriyenko, presidente da companhia estatal de pesquisa nuclear Rosatom. Um sistema de propulsão nuclear poderia realizar viagens até Marte em cerca de 6 semanas – comparados com os 18 meses dos sistemas atuais-. Além disso, o motor nuclear aumentaria as capacidades de manobra e de aceleração. O projeto foi lançado em 2010 e tem um custo estimado de US$ 274 milhões.

Foto: Sputnik

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O que realmente terá acontecido com a espaçonave russa Phobos-Grunt?


Foto: Roscosmos via EPA.

Russian Official Suggests Weapon Caused Exploration Spacecraft’s Failure

The New York Times – 11/01/2012 – por Andrew Kramer

A Russian scientific spacecraft whizzing out of control around the Earth, and expected to re-enter the atmosphere on Saturday, may have failed because it was struck by some type of antisatellite weapon, the director of Russia’s space agency said in an interview published Tuesday.

He did not say who would want to interfere with the spacecraft, which was intended to explore a moon of Mars.

The Russian craft, named Phobos-Grunt for the moon and the Russian word for ground, ran into trouble soon after it was launched in November, when its rockets failed to lift it out of low Earth orbit. What was to have been a two-and-a-half-year interplanetary journey to retrieve a soil sample from Phobos will instead end over the weekend, according to Russian engineers.

When the 13-ton Phobos-Grunt breaks up in the atmosphere, debris could potentially fall anywhere along a vast stretch of the Earth’s surface that includes the cities of New York, London and Tokyo. Though the odds are heavily against the debris causing any harm, the spectacle of people around the world anticipating the crash is another embarrassment for Roscosmos, the Russian space agency, which has presided over a series of rocket and satellite failures this year.

A statement from the United States Strategic Command acknowledged that it was tracking the space probe and that it is likely to fall in the next week. “Predictions of re-entry date, time and location can change significantly due to many changing factors, such as solar weather and orientation of the spacecraft,” the statement said. “These predictions become more accurate as the event approaches.” (mais…)