La conquista del espacio

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La conquista del espacio

Mensajepor Dalamar » 21 Nov 2012 11:03

US eyes men on Mars by 2036 - NASA's Elachi
Charles Elachi headed up the team that landed the recent rover on the Red Planet

The US is in the early stages of plans to land humans on the surface of Mars in 2036, Charles Elachi, head of NASA’s missions to the Red Planet, told delegates at the Arabian Business Forum 2012 in Dubai.

“We don’t have a programme [to send a man to Mars] but we are starting to plan,” Elachi, who heads up the Jet Propulsion Laboratory (JPL), the Pasadena-based NASA agency that constructs and operates robotic planetary spacecraft, said.

“Interestingly enough we can go to Mars every four years or so. Every 18 years they get very close. We are thinking not for 2018 but 2036 [for a human mission],” he added.

Elachi’s team at JPL successfully masterminded the landing of a one-tonne vehicle – called ‘Curiosity’ – in a deep crater on the surface of Mars in August 2012.
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Re: La conquista del espacio

Mensajepor Dalamar » 14 Dic 2012 16:59

This is the second launch for this specific ship, and third in the program. This ship first spent 224 days circling the Earth in a mission in 2010 conducting various tests, before returning, and landing like a traditional aircraft. A sister ship was launched in 2011 and landed safely after 469 days in space.

As with those previous two missions, the Pentagon was tight-lipped about the payload for this current launch, and wouldn't say how long it might be in orbit.

"The focus of the program remains on testing vehicle capabilities and proving the utility and cost-effectiveness of a reusable spacecraft," Air Force spokeswoman Tracy Bunko told Reuters.

The space planes are relatively tiny — about a quarter of the size of NASA's now-retired Space Shuttles. Their cargo capacity is relatively modest too, about that of a pickup truck bed. The two ships are powered with solar panels, instead of the chemical fuel cells used in the former shuttle program.

That power source, and the lack of a human crew and necessary accomodations for humans, allow the X-37B to remain in orbit for long periods of time.
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Re: La conquista del espacio

Mensajepor Dalamar » 20 Ene 2013 07:58

El físico Harold “Sonny” White pertenece al staff del Centro Espacial Johnson de la NASA, Houston, Texas, donde lidera el proyecto Eagleworks cuyo objetivo es desarrollar un revolucionario sistema de propulsión; este proyecto ha recibido financiación este año y pretende sentar las bases para un futuro motor “warp drive” superlumínico basado en las ideas que propuso en 1994 el mexicano Miguel Alcubierre, actual director del Instituto de Ciencias Nucleares de la Universidad Nacional Autónoma de México (UNAM), en su famoso artículo “The Warp Drive: Hyper-Fast Travel Within General Relativity,” Class. Quantum Grav. 11: L73). Hay muchas fuentes en la web, yo me enteré gracias a George Dvorsky, “How NASA might build its very first warp drive,” io9.com, Nov 26, 2012.

Parece increíble que la NASA financie la fabricación de un motor “warp drive” superlumínico. Pero, como ocurre muchas veces, hay que leer la propuesta original para saber lo que realmente está financiando la NASA al señor Harold White. Hay varias fuentes, pero un buen resumen es Dr. Harold “Sonny” White, Paul March, Nehemiah Williams, William O’Neill, “Eagleworks Laboratories: Advanced Propulsion Physics Research,” NASA Johnson Space Center, 2011.

¿Qué financia la NASA? La idea de White es construir un péndulo de torsión de precisión y lo que le financia la NASA es el intento con dicho péndulo de torsión de medir ciertos efectos cuánticos del vacío (el efecto de Casimir dinámico). Nada más. La idea de White es ilustrar de manera muy indirecta dicho efecto. Desarrollar un motor capaz de propulsar una nave espacial utilizando dicho efecto es pura ciencia ficción a día de hoy, máxime cuando el efecto particular que se pretende medir aún no ha sido demostrado. Por tanto, la NASA no financia el motor “warp drive” como tal, sino que financia los experimentos a realizar con el péndulo.

La fuerza de Casimir (1948) entre dos superficies cercanas es debida a la existencia del vacío de la electrodinámica cuántica (QED); los fotones virtuales en el vacío entre ambas placas no pueden tener una longitud de onda mayor que la distancia entre las placas, lo que da como resultado una presión negativa que conduce a una fuerza atractiva entre las placas. Todavía no se conocen aplicaciones prácticas útiles de la fuerza de Casimir, aunque su efecto “pernicioso” en ciertos dispositivos microelectromecánicos (MEMS) ha obligado a caracterizarlo y a diseñar técnicas para contrarrestarlo.

¿Puede usarse la fuerza de Casimir para propulsar una nave espacial? La idea de White es usar el efecto Casimir dinámico (observado por primera vez en 2011), que permite convertir fotones virtuales del vacío en fotones reales (resultado de la radiación de Unruh para un cuerpo acelerado, similar a la radiación de Hawking en un agujero negro). Sin embargo, la magnitud del empuje gracias al efecto Casimir dinámico es muy pequeño comparado con los sistemas de propulsión convencionales. Muy pequeño quiere decir extremadamente pequeñísimo.

¿Existe algún método que pueda amplificar esta fuerza? White cree que es posible hacerlo y ha diseñado lo que él llama el propulsor-Q (Q-thruster); sin embargo, la propuesta financiada por la NASA no incluye trabajar con dicho propulsor. Él afirma que ha logrado propulsar una carga de 0,5 kg con una fuerza entre 1-4 mN (milinewtons), aunque su sistema consume potencia eléctrica, entre 10-40 W. Su objetivo futuro es lograr una fuerza de empuje entre 0,1-1 N con un consumo de potencia eléctrica entre 0,3-3 kW. Basta comparar estos números con el par motor y la potencia de un automóvil para tener una idea de lo que estamos hablando.

¿Revolucionará el propulsor-Q los viajes espaciales? Según White, una carga útil de 40 kg puede llevarse a la órbita de Júpiter en 35 días con un consumo energético de 2 MW (que debería ser suministrado por un reactor nuclear o similar); en 70 días se alcanzaría la órbita de Saturno. El propulsor-Q podría revolucionar la exploración del sistema solar exterior.
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Re: La conquista del espacio

Mensajepor Dalamar » 14 Feb 2013 08:08

THE AMBITIOUS DAWN MISSION, launched in September 2007, is one of NASA’s most remarkable ventures into the solar system. The spacecraft has recently completed a spectacular exploration of Vesta and is now traveling to Ceres; these were among the last uncharted worlds in the inner solar system prior to Dawn. They are the two most massive residents of the main asteroid belt. Ceres is so large that it is included in the category of dwarf planets, along with Pluto. Remnants from the time that planets were formed, Ceres and Vesta hold clues that will help scientists understand the dawn of the solar system. Dawn orbited Vesta from July 2011 to September 2012 and returned astonishing views of this fascinating world. It is the only spacecraft ever to orbit an object in the asteroid belt. Such a mission would be impossible without the use of ion propulsion, a technology that has mostly been in the domain of science fiction, but which was tested extensively on the Deep Space 1 mission, paving the way for Dawn. Dr. Marc Rayman, Dawn’s Chief Engineer and Mission Director at JPL
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Re: La conquista del espacio

Mensajepor Dalamar » 17 Feb 2013 08:16

Probabilidades segun Intrade: (Esto quiere decir que la gente cree que en las proximas decadas la NASA encontrara extraterrestres)
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Re: La conquista del espacio

Mensajepor Dalamar » 24 Feb 2013 13:30

GenCorp and the New Space Race

GenCorp finds itself in a unique position because the firm's Aerojet division supplies the engine for the highly anticipated Antares Rocket.

As much as any other development in the space industry today, the Antares program shows how the United States is moving steadily toward a true commercial space system.

Under that long-term plan, more of NASA's work will shift to the private sector. That's great for investors like you and me, because it gives us a chance to profit from firms that will gain from this accelerating trend.

With that context, you can see why an Antares rocket launch scheduled for next month is such an important milestone - and is providing GenCorp's stock with a powerful lift.

Officially, this is just a "test flight" of the system. But as a veteran observer of the aerospace industry, I can tell you that this Era of Radical Change event is anything but "routine."

This new rocket system is being built to launch a private robotic spaceship on cargo trips to the International Space Station. It features a streamlined design that is supposed to lower the costs of space-cargo flights at a time when NASA (and Washington in general) is learning to live with increasingly tighter budget constraints.
Technically speaking, this project really is the domain of rocket maker Orbital Sciences Corp. (NYSE: ORB). With Orbital at the helm, Antares will make eight deliveries for NASA worth up to $1.9 billion.

There is more than a little irony here. To even the most casual aerospace investor, Orbital is a recognizable household name. GenCorp, on the other hand, often flies under the radar even though its Aerojet unit is a trusted builder of rocket engines with decades of experience.

And if you were to judge by stock performance alone, clearly GenCorp is the Antares star. Orbital's stock is up just 7% over the past year.

That means GenCorp generated 15 times Orbital's return.

(Just so you don't think I'm cherry-picking here, Orbital has been catching up with GenCorp in the past three months, generating gains of 27% compared with gains of 42% for owners of GY shares.)
There's a Lesson Here

A hefty number of needed innovations will be engineered by longstanding industrial firms or Silicon Valley denizens that have been able to evolve with the times.

That means that corporate turnarounds like the one at GenCorp can be rich hunting grounds for us to visit as we search for new-era profit opportunities.

To see what I mean, think back to America's return to Mars last July. The feat made headlines around the world as the spacecraft and its robotic rover captured the public's imagination.

Known as the Mars Science Laboratory (MSL), the new craft is designed to carry out a wide range of scientific tests needed to unlock the deep mysteries of the red planet.

GenCorp's Aerojet unit supplied 24 thrusters that helped make the descent and landing go smoothly. This was hardly an easy task. The MSL mission was by far the most complex planetary touchdown in the history of space travel.

Aerojet's history mirrors that of America's space missions. Founded in 1942, Aerojet has worked with NASA since the dawn of manned space flight. It has a reputation for making the very best equipment money can buy.

But that platinum reputation wasn't enough to keep the business from falling on hard times not too long ago when the Obama administration cancelled plans to resume manned missions to the Moon.

But as investors now know, the White House supports missions to Mars, as well as exploratory missions to asteroids. In all likelihood, that means Aerojet will continue to supply engines for a number of coming space flights.

Aerojet is the only U.S. propulsion firm that makes both solid rocket motors and liquid rocket engines. And GenCorp wants to make certain that Aerojet remains the sector's Top Gun. That's why, just last year, for instance, the parent company dropped $550 million to acquire Pratt & Whitney Rocketdyne from United Technologies Corp. (NYSE: UTX).

Rocketdyne makes space-launch vehicles, missile-defense systems and advanced hypersonic engines. To date, it has powered nearly all of NASA's manned spacecraft, as well as the space probes that have traveled to nearly every planet in our solar system.

That deal is one of the reasons that Gabelli, a high-profile money manager who is frequently featured by CNBC and Barron's, believes GenCorp shares are ready to rocket. It was a shrewd acquisition, and one that will add to the company's earnings and market reach.

What he didn't say - but we will - is that GenCorp is clearly setting itself up to play a leading role in the New Space Race.
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Re: La conquista del espacio

Mensajepor Dalamar » 24 Feb 2013 18:15

GenCorp Inc (NYSE:GY)

Gabelli indicates he is purchasing shares of GenCorp, a manufacturer of aerospace and defense products that is headquartered in Rancho Cordova, Calif. In addition to its aerospace and defense portfolio, GenCorp owns 12,200 acres of real estate in metropolitan Sacramento, Calif.

Since Gabelli’s appearance on CNBC on Feb. 12, Gabelli has revealed in a Feb. 19 regulatory filing with the Securities and Exchange Commission that he has increased his stake in GenCorp to 15.6%.

On Feb. 11, GenCorp reported fourth quarter 2012 results led by the company’s funded backlog, which grew to a record $1,018 million as of Nov. 30, 2012, compared to $902 million during the prior year period. With the stock trading at multi-year highs, Gabelli believes more upside is around the corner when considering the company’s real estate assets and the earnings potential of a recent acquisition.

The $700 million GenCorp closed on its acquisition of Rocketdyne, a rocket design and production company also headquartered in California, earlier this year. Gabelli stated on CNBC that Rocketdyne’s manufacturing business has “short-term hiccups” but should earn $0.70 per share for GenCorp in 3-4 years.
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Re: La conquista del espacio

Mensajepor Dalamar » 09 Mar 2013 15:43

Ya no es un sueño de la @NASA. En un futuro no tan lejano, veremos un reality show para todo el mundo desde Marte.
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Re: La conquista del espacio

Mensajepor Dalamar » 20 May 2013 04:54

Abu Dhabi-backed Virgin Galactic, the space tourism arm of Virgin Group, will stage its first flight this Christmas Day, Richard Branson said.

Celebrities Angelina Jolie, Brad Pitt and Ashton Kutcher are rumoured to be among those who will participate in the first flight with Richard Branson on December 25.

The company this week also announced it had hired two veteran pilots to operate the space ship, including a former NASA astronaut.

Co-owned by the UAE’s Aabar Investments, which owns about 37 percent, Virgin Galactic expects to “revolutionise the way we get to space”.

As at July last year, more than 500 people had paid deposits towards the $200,000 trip, which will last about two hours and reach 109 kilometres into space.

Virgin expects to fly 600 people in the first two years of service.

The company also plans to build a space port in Abu Dhabi, which could see travel to the US reduced to one hour.

It is expanding to include a satellite-launching service that would use a low-cost rocket system to propel payloads into orbit.

The firm recently successfully tested its SpaceShipTwo.
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Re: La conquista del espacio

Mensajepor Dalamar » 22 May 2013 04:47

Musk founded his third company, Space Exploration Technologies (SpaceX), in June 2002[21] and is the CEO and CTO. SpaceX develops and manufactures space launch vehicles with a focus on advancing the state of rocket technology. The company's first two launch vehicles are the Falcon 1 and Falcon 9 rockets and its first spacecraft is Dragon.[22]

SpaceX was awarded a $1.6 billion NASA contract on 23 December 2008, for 12 flights of their Falcon 9 rocket and Dragon spacecraft to the International Space Station, replacing the Space Shuttle after it retired in 2011. Initially, Falcon 9/Dragon will replace the cargo transport function of the Shuttle and astronaut transport will be handled by the Soyuz. However, SpaceX has designed Falcon 9/Dragon with astronaut transport in mind and the Augustine commission has recommended that astronaut transport be handled by commercial companies like SpaceX.[23]

Musk views space exploration as an important step in expanding—if not preserving—the consciousness of human life.[24] Musk has said that multiplanetary life may serve as a hedge against threats to the survival of the human species. "An asteroid or a super volcano could destroy us, and we face risks the dinosaurs never saw: An engineered virus, inadvertent creation of a micro black hole, catastrophic global warming or some as-yet-unknown technology could spell the end of us. Humankind evolved over millions of years, but in the last sixty years atomic weaponry created the potential to extinguish ourselves. Sooner or later, we must expand life beyond this green and blue ball—or go extinct." Musk's goal is to reduce the cost of human spaceflight by a factor of 10.[25] He founded SpaceX with $100 million of his early fortune. He remains chief executive officer and chief technology officer of the Hawthorne, Calif.-based company.[26]

In seven years, SpaceX designed the family of Falcon launch vehicles and the Dragon multi-purpose spacecraft from the ground-up. In September 2009, SpaceX's Falcon 1 rocket became the first privately funded liquid-fuelled vehicle to put a satellite into Earth orbit. NASA selected SpaceX to be part of the first program that entrusts private companies to deliver cargo to the International Space Station. This contract, which has a minimum value of $1.6 billion and a maximum value of $3.1 billion, has become a cornerstone of the Space Station's continued access to cargo delivery and return. In addition to these services, SpaceX's goals include simultaneously lowering the price of orbital spaceflight and improving reliability, both by an order of magnitude, while creating the first fully reusable orbital launch vehicle. In the coming years, Musk will focus on delivering astronauts to the International Space Station, but has stated his personal goal of eventually enabling human exploration and settlement of Mars. In a 2011 interview, he said he hopes to send humans to Mars' surface within 10–20 years.[27] On 25 May 2012, the SpaceX Dragon vehicle docked with the ISS, making history as the first commercial company to launch and dock a vehicle to the International Space Station.

Fuente: Wikipedia
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