segunda-feira, 1 de fevereiro de 2010

Projecto Constellation Cancelado pela Administração Obama!


É o fim dos sonhos de regressar à Lua até 2020, que já eram possibilidades remotas, para ser totalmente honesto. A administração do Presidente Obama pretende agora investir em sistemas de lançamento privados para alcançar a Estação Espacial Internacional, e dirigir esforços para a exploração do resto do Sistema Solar.

Na minha muito modesta opinião, isto é o fim da NASA. O último lançamento do Space Shuttle está agendado para Setembro deste ano, e não há, neste momento, nenhuma alternativa viável de colocar astronautas norte-americanos no Espaço, na Estação Espacial Internacional ou onde quer que seja. O sector privado é ainda um sonho, e só Deus sabe quanto tempo demorará a empresas privadas conseguir colocar, fiávelmente e em segurança, astronautas em órbita!

Fonte: Email da CBS Space News


2011 NASA budget cancels moon program, endorses commercial manned space initiative


2:40 PM, 2/1/10, Update

On the seventh anniversary of the 2003 Columbia disaster, the Obama administration unveiled a sweeping change of course for the nation's civilian space program Monday, killing NASA's post-Columbia moon program and shifting development and operation of new rockets and capsules from the government to private industry.

Requesting some $19 billion for NASA in fiscal 2011, the administration announced plans to pump an additional $6 billion into NASA's budget over the next five years to kick start development of a new commercial manned spaceflight capability, including some $500 million in 2011.

Over that same five years, some $7.8 billion will be earmarked for new technology development, including autonomous rendezvous, orbital fuel transfer systems and closed-loop life support systems. Another $3.1 billion will support development of new propulsion technologies needed by future heavy-lift rockets. And another $3 billion will go to pay for a series of robotic missions to the moon and beyond to test systems needed for eventual manned flights.

"Imagine trips to Mars that take weeks instead of nearly a year, people fanning out across the inner solar system, exploring the Moon, asteroids and Mars nearly simultaneously in a steady stream of 'firsts," NASA Administrator Charles Bolden told reporters. "And imagine all of this being done collaboratively with nations around the world. That is what the president's plan for NASA will enable, once we develop the new capabilities to make it a reality."

No timetables were established for human flights beyond low-Earth orbit, with deputies saying the focus instead will be on enabling technology development and innovation.

As for commercial flights to and from the International Space Station, NASA Deputy Administrator Lori Garver said she hoped a new private-sector launch system, possibly including modified versions of technology developed for the canceled moon program, could be available by around 2016 if not earlier.

"We will try to accelerate and use the great minds of industry to get a competition going and I'm sure they'll want to beat that," she said.

The Bush administration's post-Columbia initiative to finish the International Space Station and retire the shuttle by the end of 2010 remains intact, with just five more missions planned for NASA's iconic winged spaceships. Funding is available to support operations through the end of the year or early 2011 if necessary.

The new budget also extends operation of the space station through at least 2020 and increases funding for science and utilization.

But as expected, it halts development of the Ares family of rockets and the Orion crew capsules NASA was designing to carry astronauts to the station and back to the moon by the early 2020s as part of the Bush administration's Constellation program.

The cancellation of Constellation and the near-term shift to commercial launch operations is a "more radical (plan) than I expected," John Logsdon, a space policy analyst at George Washington University, told CBS News.

"It represents really a fundamental shift in the way NASA goes about doing business, from being the direct designer of our space capabilities and then having industry build NASA designs to being the customer of what industry builds," he said. "Even NASA people use the analogy to the air mail contracts the government signed in the '30s. It's going to be a very different way of doing business."

The Obama administration concluded the Constellation program, which has cost taxpayers more than $9 billion so far, "was over budget, behind schedule, and lacking in innovation due to a failure to invest in critical new technologies," according to a budget summary.

"Using a broad range of criteria, an independent review panel determined that even if fully funded, NASA's program to repeat many of the achievements of the Apollo era, 50 years later, was the least attractive approach to space exploration as compared to potential alternatives."

The independent review, chaired by aerospace executive Norman Augustine, concluded last fall that the Constellation program, hobbled by previous budget reductions under the Bush and Obama administrations, was not workable without an additional $3 billion a year in restored funding.

The panel outlined a variety of alternatives and favored a so-called "flexible path" approach that called for relying on private industry for manned flights to and from low-Earth orbit while NASA focused on development of a new heavy lift rocket and eventual flights to a variety of possible deep space targets, including the moon, asteroids and even the moons of Mars.

The budget unveiled Monday said the Constellation program took money away from other NASA programs, "including robotic space exploration, science, and Earth observations."

"The President's Budget cancels Constellation and replaces it with a bold new approach that invests in the building blocks of a more capable approach to space exploration that includes:

-- "Research and development to support future heavy-lift rocket systems that will increase the capability of future exploration architectures with significantly lower operations costs than current systems - potentially taking us farther and faster into space.

-- "A vigorous new technology development and test program that aims to increase the capabilities and reduce the cost of future exploration activities. NASA, working with industry, will build, fly, and test in orbit key technologies such as automated, autonomous rendezvous and docking, closed-loop life support systems, in-orbit propellant transfer, and advanced in-space propulsion so that our future human and robotic exploration missions are both highly capable and affordable.

-- "A steady stream of precursor robotic exploration missions to scout locations and demonstrate technologies to increase the safety and capability of future human missions and provide scientific dividends."

In a statement, Augustine said "by allocating the technology resources highlighted in our report as being necessary, it will be possible to lay the foundation for travel beyond low-Earth-orbit. ... NASA will be able to focus on this true frontier and to regain its position as a cutting-edge research and development organization.

"While many of us who believe strongly in human spaceflight might have hoped that still further funding would have been possible, this is obviously a demanding period from a budgetary standpoint. Importantly, the president's proposed program seems to match means to ends, and should therefore be executable."

In a startling break with the past, the Obama administration ordered NASA to focus on a new initiative that would effectively outsource manned flight, turning to private industry to design and develop the rockets and spacecraft needed to carry U.S. astronauts to and from the space station.

Between the shuttle's retirement and the emergence of a new manned rocket system, U.S., European, Japanese and Canadian astronauts will be forced to hitch rides on Russian Soyuz rockets at more than $50 million a ticket.

"The budget funds NASA to contract with industry to provide astronaut transportation to the International Space Station as soon as possible, reducing the risk of relying solely on foreign crew transports for years to come," the budget summary stated.

"A strengthened U.S. commercial space launch industry will bring needed competition, act as a catalyst for the development of other new businesses capitalizing on affordable access to space, help create thousands of new jobs, and help reduce the cost of human access to space."

The only U.S. rockets currently flying that are powerful enough to step into the roll of crew transport in the near term are Boeing-built Delta 4 and Lockheed Martin Atlas 5 boosters used to launch military, scientific and commercial satellites. Neither family of rockets is certified to carry humans.

Other companies are in the process of developing new spacecraft to carry supplies to the space station after the shuttle's retirement. But it remains to be seen how long it might take any of the commercial interests to develop, test and deploy a manned rocket system.

It also is not yet clear what sort of control and oversight NASA will have in the new commercial arena, whether astronauts will remain government employees or private contractors or how the agency's decades of operational experience might be leveraged by commercial operators.

"I think the primary way it translates over is for the winners in this commercial competition to hire the people that have the institutional memory," Logsdon said. "Second, we're going to be operating station until at least 2020. So there's a core of operational folks inside NASA that will still be very much involved."

Contractors already occupy key positions in mission control at the Johnson Space Center in Houston and at other NASA facilities, but it's not yet known how commercial manned space flights will be managed, who will have responsibility for mission design, safety and execution or how government facilities might be utilized.

But Bolden insisted safety will remain a top priority.

"NASA will set standards and processes to ensure that these commercially built and operated crew vehicles are safe," he said. "No one cares about safety more than I. I flew on the space shuttle four times. I lost friends in the two space shuttle tragedies. So I give you my word these vehicles will be safe."

Against this backdrop of uncertainty, the shuttle program is on schedule to end with a final flight to the space station in September. Up to 7,000 jobs in the Kennedy Space Center are are expected to be lost, along with several thousand more at other NASA field centers.

An administration official told CBS News last week the new initiative "could lead to as many as 1,700 new jobs in Florida ... and will catalyze the development of other new businesses that capitalize on affordable human access to space."

"We will also make strategic new investments at Kennedy Space Center that will lead to hundreds of new jobs, upgrade facilities for the 21st century, and help ensure that KSC remains a world-class launch port for decades to come," he said.

That apparently includes upgrades to launch complex 39 that would support flights by commercial rockets.

"A major focus of this effort will be to create the 21st Century launch facilities and infrastructure needed at Kennedy Space Center, transforming the facility to more effectively support future NASA, commercial, and other government launches," the budget summary said.

Edwin "Buzz" Aldrin, the second man on the moon, strongly endorsed the new program, saying "the truth is, that we have already been to the Moon - some 40 years ago. A near-term focus on lowering the cost of access to space and on developing key, cutting-edge technologies to take us further, faster, is just what our nation needs to maintain its position as the leader in space exploration for the rest of this century."

But many NASA supporters sharply disagreed and Logsdon predicted a "vociferous" fight in Congress.

"The President's proposed NASA budget begins the death march for the future of US human space flight," said Sen. Richard Shelby, an Alabama Republican. "Congress cannot and will not sit back and watch the reckless abandonment of sound principles, a proven track record, a steady path to success, and the destruction of our human space flight program."

Shelby noted the anniversary of the Columbia disaster, saying "it is ironic that Constellation, a program borne out of the recommendations of the Columbia Accident Investigation Board, would be eliminated in lieu of rockets repeatedly deemed unsafe for astronauts by NASA's own Aerospace Safety Advisory Panel."

Rep. Suzanne Kosmas, a Florida Democrat, welcomed increased spending at the Kennedy Space Center but added that "leaving NASA with no detailed plan or timeline for exploring beyond Earth's orbit will cede our international leadership in space."

"Though I welcome the investments in infrastructure at Kennedy Space Center, not knowing when, or even if, the next human spaceflight launches will occur makes it difficult to retain the Space Coast's highly skilled workforce and maintain America's international leadership in space.

"The President's proposal is unacceptable, and I will work with my colleagues from both parties to develop a plan for space exploration that maintains a robust human spaceflight program, minimizes the gap (between the shuttle and its replacement), and protects jobs."

Surprisingly, perhaps, astronaut Steve Robinson, scheduled for launch next Sunday aboard the shuttle Endeavour, said in an interview Friday that "we have an exciting future. It's not well defined, but it's exciting."

"I kind of refuse to be disappointed in something that hasn't shown itself to be actually disappointing yet," he said. "We don't really know how we should use the small amount of money that American citizens are willing to pay for a space program. But I do know that for at least 50 years, American citizens have wanted a space program with humans flying in space. And I really am confident that will continue in some way."

sexta-feira, 27 de novembro de 2009

Como seria se a Terra tivesse anéis como os de Saturno!

A História de um lançamento

Um vídeo espetacular feito a partir das imagens captadas pelas várias cameras de vídeo instaladas no Space Shuttle.

Não podia estar um dia melhor...

E já aterrou o Space Shuttle Atlantis, no final da missão STS 129, uma das últimas ocasiões em que poderemos ver uma nave espacial a aterrar como um avião vulgar. Algo que outrora foi considerado o futuro dos vôos espaciais.

sábado, 12 de setembro de 2009

Aterragem do Space Shuttle Discovery hoje de madrugada, na Base Aérea de Edwards, na Califórnia

Uma das aterragens mais espetaculares de que me recordo. Durante uma das curvas para se fazer à pista, vêm-se os rastos de condensação nas pontas das asas do Discovery, o que dá muito mais a sensação da velocidade real a que está a voar!

quinta-feira, 10 de setembro de 2009

Teste do motor do Ares I

O Ares I é o foguetão que, de acordo com os planos correntes, irá voltar a levar astronautas norte-americanos ao Espaço, a partir de 2015. Os leitores deste blog saberão que tem havido problemas e dúvidas em relação a isso, mas por enquanto os testes prosseguem. Este, em particular, decorreu há momentos, e mostra o motor principal a desenvolver só 22 milhões de cavalos!!!

sexta-feira, 14 de agosto de 2009

Nunca a Humanidade viu tão longe!

Sabiam? Não, em Portugal não se fala de coisas importantes. Mas há já vários anos que foram feitas estas imagens, que são das galáxias mais distantes jamais vistas por seres humanos. Apontaram o Telescópio Espacial Hubble a um ponto aparentemente sem estrelas, e fizeram uma longuíssima exposição. O resultado foi o Hubble Deep Field e, mais tarde, o Hubble Ultra Deep Field.

A Humanidade nunca viu tão longe, e estas são porventura as imagens mais importantes da História.

quinta-feira, 13 de agosto de 2009

O sucessor do Space Shuttle

É este o sucessor dos fabulosos Space Shuttles - o Projecto Constellation. Neste preciso momento, o futuro exacto deste projecto ainda está em dúvida. Apesar de já haver 3 anos de desenvolvimento, o certo é que ainda não foi feito nenhum lançamento - está um previsto para o ano que vem - e com os cortes orçamentais já feitos e previstos para os próximos anos, está em grande dúvida a sua entrada em funcionamento em 2015. E em relação a um regresso à Lua em 2020, essa data - e a própria missão à Lua - estão cada vez mais em dúvida!

O meu prognóstico é, neste momento, que a última missão do Shuttle não seja em 2010 mas sim em 2011, e que a primeira missão da Orion será apenas em 2017 ou, com muita sorte, 2016. Os EUA ficarão assim, durante 5 ou 6 anos, ou mais, dependentes dos Russos (!!!) para transportarem astronautas, equipamento e mantimentos para a Estação Espacial Internacional!

Quem diria que iríamos ficar assim, 40 anos depois das magníficas viagens à Lua?


Entretanto, os planos correntes de regresso à Lua consistem numa missão com este aspecto:


No entanto, este plano está em questão neste momento. Só daqui a alguns meses saberemos a direcção real da NASA para os próximos anos, e se realmente voltaremos à Lua em 2000 e vinte e tal.

O meu voto é de que serão os Chineses os próximos a irem à Lua, e apenas numa missão Orbital. Descer de facto na Lua é algo muito complexo, e não vejo Governos a quererem fazer esse investimento.

segunda-feira, 10 de agosto de 2009

Voar a 21 Kms de altitude num U2

Dei de caras com o vídeo da semana logo a uma segunda-feira. Ponham de lado dez minutos, aumentem a imagem para ocupar o ecrán todo, e levantem o som para ouvirem bem a música e os diálogos.

Bom vôo!

segunda-feira, 15 de dezembro de 2008

Alguns vídeos espetaculares

Leitores de CD em gravidade zero.


Foguetão Soyuz.


Alka Seltzer em órbita!



Lançamento do Space Shuttle, de dentro.


Café em órbita.



sexta-feira, 5 de dezembro de 2008

Aterragem do Space Shuttle Endeavour, STS-126

Aqui está, com algum atraso, o vídeo da aterragem, na Base Aérea de Edwards, na Califórnia. A aterragem deveria ser na Flórida, mas foi desviada para a Califórnia devido ao mau tempo que iria persistir nos dias em que a Endeavour teria de aterrar.

sexta-feira, 28 de novembro de 2008

O momento em que se perdeu um saco de ferramentas em órbita

Foi mesmo um daqueles acidentes que só acontecem porque as pessoas estão habituadas a porem coisas de lado e elas não fugirem. Infelizmente, no Espaço, é diferente. Heide Piper, astronauta da missão STS 126, neste momento ainda em órbita, teve de limpar o interior de um saco de equipamento, por ter escapado óleo de uma ou mais das pistolas que seriam utilizadas para lubrificar um dos painéis solares da Estação Espacial Internacional ISS. Ao fazê-lo teve de tirar momentaneamente um saco de ferramentas desse saco maior, e o saco escapou. Vê-se perfeitamente o momento em que a astronauta ainda tenta agarrar o saco, sem sucesso.

As ferramentas foram avaliadas em cerca de 100.000 dólares.

segunda-feira, 24 de novembro de 2008

Buran, o Space Shuttle Soviético

Fez há dias 20 anos que se realizou o único vôo de uma máquina absolutamente revolucionária, o Space Shuttle soviético 'Buran'.



Em certos aspectos era - e é ainda - superior ao seu equivalente americano. Nomeadamente era capaz de vôos não tripulados, era capaz de transportar mais 5 toneladas de carga, por virtude de não ter os foguetes principais na nave, e podia ser lançado e aterrar em condições mais adversas que o Space Shuttle. Adicionalmente, o seu foguetão podia ser usado para transportar outras cargas que não o Buran.

Só vantagens, com 7 anos de atraso em relação ao programa americano, e ficamos com a idéia de que se desperdiçou muito génio.


Fonte: BBC

Buran - the Soviet 'space shuttle'

By Anatoly Zak
Russianspaceweb.com

Buran (AFP)
Despite its looks, Buran was not a facsimile of the US shuttle

Some 20 years ago, on 30 September 1988, many readers of the Pravda newspaper - the official mouthpiece of the Soviet communist party - could not believe their eyes.

Published somewhat inconspicuously on the second page, there was a photo depicting the familiar shape of the US space shuttle, but with Soviet insignia on its wings.

Finally, years of rumours about a Soviet "copy" of the shuttle had been confirmed.

However, the official Soviet press was quick to point out that despite its superficial resemblance to the US counterpart, the Russian shuttle, dubbed Buran or "snowstorm", was better and more capable.

Within days, the new ship got a chance to prove it.

On November 15, 1988, as snowy clouds and winds were swirling around Baikonur Cosmodrome in Kazakhstan, the Buran orbiter, attached to its giant Energia rocket, thundered into the gloomy early morning sky.

" They obliterated this crowning achievement of the Soviet space programme "
Three hours and two orbits later, the 100-tonne bird glided back to a flawless landing just a few miles from its launch pad.

Despite the kind of strong winds that would rule out any launch or landing attempt by the US space shuttle, Buran touched down just 3m off the runway centreline.

And this planet-wide ballet was performed with its "pilots" safely on the ground.

Born of paranoia

Buran's pioneering mission was the culmination of an effort by more than 600 Soviet institutions which, since 1976, had secretly laboured on this largest of Soviet space projects.

Upon the spacecraft's triumphant landing, the Soviet newspapers promised a new era in space exploration. Few could predict at the time that it would be Buran's only mission.

Unlike Nasa, Soviet developers never had any grand illusions about replacing traditional rockets with a reusable space truck.

Instead, the Soviet shuttle was conceived primarily as a "symmetrical response" to the perceived military threat from America's winged orbiters.

Buran site
A fully assembled Energia rocket with the first flown Buran orbiter, in 2002

Years after a sceptical Pentagon had given up on the shuttle, even as a delivery truck for spy satellites, the Russian officials continued whispering to journalists that the US orbiter had a secret capability - to make an undetected "dive" into the Earth's atmosphere and suddenly glide over Moscow dropping nuclear bombs.

Never mind that such a scenario was not supported by physics or by common sense.

Energia-Buran's chief architect, Valentin Glushko, hardly tried to educate warmongers at the Politburo about the questionable merits of the re-usable orbiter as a weapon.

Glushko was one of the first generation of Soviet rocket pioneers, who were experimenting in the 1930s under the tutelage of Konstantin Tsiolkovsky - one of the "fathers" of spaceflight. Like many of his contemporaries, he had little interest in designing weapons.

He did dream, however, about building a permanent base on the surface of the Moon.

Unfortunately, after losing the Moon race to America in 1969, Soviet leaders had little appetite for another deep-space adventure.

Launch pad
The launch and test facility where the Energia rocket first took off in 1987

Still, Glushko probably hoped to exploit Cold War paranoia about the threat of the US shuttle as an opportunity to lay a detour road to the Moon, and possibly even to Mars.

Glushko carefully steered the Soviet shuttle project away from being a carbon copy of the American design, which could not be easily modified.

Instead, he proposed a winged orbiter along with a fully functional rocket which could carry any cargo - including lunar landers, orbital tugs and even pieces of a Martian expeditionary complex.

In the end, Kremlin bosses had committed to the monumental expense of money and human talent with only vague hopes that real tasks for the grandiose vehicle would emerge as it came online.

Instead, after long delays and cost overruns, the Buran appeared on the scene in the last act of the Cold War and amid a crumbling Soviet economy.

The Berlin Wall had come down just a year after its first flight, and the Soviet Defence Ministry was suddenly more preoccupied with resettling thousands of troops returning from Eastern Europe than with servicing orbital anti-missile platforms and deploying killer satellites in space.

Energia site
The first stage of the Energia rocket inside Building 112 in Baikonur

The collapse of the Soviet Union in December 1991 sealed the fate of the Energia-Buran system.

There was a flicker of hope for Buran's giant booster - Energia - when Russia joined the effort to build the International Space Station (ISS).

Still unfinished today, after a decade of efforts and dozens of assembly flights, the ISS could have been hauled into orbit by only a few Energia boosters, had international partners adopted it into the program, say the rocket's proponents.

In the mid-1990s, a flight-ready Buran orbiter, which made the historic trip in 1988, had been mounted on the back of a fully assembled Energia rocket at Baikonur's Building 112.

This eye-popping display became a popular stop for journalists and foreign tourists, who periodically "invaded" Baikonur for high-profile launches.

To the untrained eye, the gargantuan rocket and its orbiter looked all but ready for a rollout to the launch pad.

Last resting place

In 2001, this spectacle, combined with the optimistic and mis-translated comments of a Russian guide, had such a profound effect on one Western reporter that he filed a story claiming that the Energia-Buran programme was about to be re-started.

The article proved that a decade after its demise, the Buran had already become a legend.

However, if one looked closely in Building 112 it was possible to see water dripping from the high ceiling on a rainy day and accumulating on the floor, under the dead torsos of Energia rockets.

The keeper of the facility, who showed reporters around the building, said that he could hardly find money to send repair men to patch up the giant roof.

Interior of N-1 hangar at Baikonur
Rescue workers search the devastated hangar at Baikonur

Eventually, a repair team, believed to include eight people, did make it to the roof, climbing on top of Building 112 on May 12, 2002.

According to eyewitnesses, at about 0920 local time, the entire structure shook violently, as if hit by an earthquake, and enormous pieces of debris plunged dozens of metres to the ground below.

They obliterated this crowning achievement of the Soviet space programme.

But the Energia-Buran programme did leave a lasting legacy.

The cavernous launch facilities at Baikonur and a state-of-the-art mission control centre in Korolev have continued serving the Russian space programme and its international partners.

The rocket technology developed for Energia-Buran has been put to use in other launchers.

A mighty RD-170 engine, originally developed for the first stage of Energia, today powers the Ukrainian Zenit rocket.

This engine's scaled-down descendants - the RD-180 and RD-190 - have been adopted for the US Atlas booster and Russia's next-generation Angara rockets.

While the US space shuttle will soon share the fate of the Buran orbiter - as a museum exhibit - emerging plans for lunar exploration have revived concepts of super-heavy rockets, on both sides of the Atlantic.

If they are ever built, their creators will have to re-trace the path once made by Valentin Glushko and his colleagues.

Espectacular! Camera de carro da polícia canadiana filma queda de meteoro!



Astrónomos estão neste momento a tentar encontrar restos do meteoro.

sábado, 15 de novembro de 2008

Vídeos amadores do lançamento do Space Shuttle

E de acordo com a tradição, aqui vão alguns vídeos amadores do lançamento desta madrugada. Um deles é feito por um miúdo! :)







Nossa Senhora! Caramba! :D


Oxalá o Presidente Eleito dos EUA, Barack Obama, tenha a oportunidade de constatar o apoio popular a estas missões!

Deve ser uma festa do caraças ver um lançamento destes! Especialmente a uma hora acessível, como este foi - nos EUA eram 5 para as 8 da noite! Lindo!

Lançamento nocturno do Space Shuttle Endeavour - STS 126

Faltavam 5 minutos para a uma da manhã em Lisboa quando um Sol artificial se ergueu do Centro Espacial Kennedy, em Merrit Island, na Flórida. Tratava-se do Space Shuttle Endeavour, em mais uma missão para expandir as capacidades da Estação Espacial Internacional (ISS). O vídeo abaixo mostra toda a sequência da contagem decrescente nos últimos 9 minutos, a partir da tradicional 'despedida' do director de vôo e do comandante do Space Shuttle, até à entrada em órbita. Visto tratar-se de um lançamento nocturno, a fase mais espetacular é mesmo nos primeiros segundos de vôo.

quinta-feira, 13 de novembro de 2008

Tudo a postos para o lançamento do Space Shuttle amanhã, perto da meia-noite.


O Space Shuttle Endeavour, uma das naves espaciais mais fantásticas alguma vez concebidas, será lançado amanhã, por volta da meia-noite e 55, hora de Lisboa. Tudo está a correr bem com a contagem decrescente, a única incógnita é o tempo, já que uma frente fria se está aproximar do Centro Espacial Kennedy. Os meteorologistas consideram haver 60% de possibilidades de condições favoráveis ao lançamento. Estaremos atentos! :)

Fonte: NASA SpaceFlight

STS-126 launch countdown begins - Atlantis heads back to OPF-1

November 11th, 2008 by Chris Bergin

The three day launch countdown for STS-126 has begun, marking the start of S0007 operations - which will hopefully conclude with the launch of Endeavour at 7:55pm local time on Friday. Meanwhile, Atlantis has been towed back to her Orbiter Processing Facility (OPF-1), as a result of the rescheduling of STS-125.



Endeavour is issue free, following the confirmation that the Integrated Display Processing (CRT2 MEDS 1553) problem has been cleared for flight.

“CRT 2 troubleshooting update: No additional troubleshooting is planned prior to launch. The plan is to fly as-is and defer any further troubleshooting to next flow,” noted the latest flow report on L2.

“The problem is not expected to impact flight ops since it only occurs at MDU power up, and MDU operation has not been affected. Currently, there are no Cat I constraints, and 34 Cat II constraints.”

The only concern at present is the weather that is expected in the local area around launch time, although this remains favorable. Should there be a delay to the November 14 launch date several mission options may come into play, relating to the arrival of the Russian Progress resupply vehicle (31P) - which is due to launch to the ISS later this month.

“The MMT (Mission Management Team) Prebrief was conducted (with) the discussion focused on potential decisions that may be required during the mission,” noted the latest MOD 8th Floor memo.

“The Progress 31P loiter plan allows STS-126 to launch as late as 11/21 and still allow one day between nominal undock and 31P docking. Use of the FD4 (Flight Day 4)pane on “two-pane” days was discussed. There is only FD3 capability on the nominal launch day of November 14 so this discussion only comes into play for a launch delay.

“If launch is scrubbed, the current plan is to use the FD4 pane if required to get off the pad on November 15th. ISS may request a one day mission extension if required to accomplish important sampling activities to support go/no-go decisions for six person crew. This decision could come as late as FD10 depending on how the mission is progressing.

“The focused inspection decision timeline is slightly unique for this mission since some locations on the starboard wingtip cannot be inspected after the MPLM is installed due to insufficient clearance with the SRMS/OBSS (Shuttle Remote Manipulator System/Orbiter Boom Sensor System).

“The focused inspection meeting will be conducted at 10 pm on Sunday, 11/16, (assuming launch on 11/14) to determine whether there are any focused inspection requirements in the starboard wingtip area which would necessitate delaying MPLM installation until after the focused inspection is completed.”

An additional note related to the sensors on the Wing Leading Edge - known as the WLE IDS (Impact Detection System) which has registered a number of hits to the wing on orbit - though most aren’t actual impacts. This is due to the sensitivity of the system, which has since been refined.

“The Orbiter project also reviewed their new screening criteria for Wing Leading Edge sensor indications, which will reduce the number of false positives.”

Endeavour’s crew, led by Commander Chris Ferguson, also arrived at the Kennedy Space Center on Tuesday, following a T-38 ride from their home base in Houston.

Meanwhiile, Atlantis - now having to wait until at least May, 09, for an opportunity to fly on the flagship mission of servicing Hubble - has completed de-stack operations from her ET-127 stack, for a return to the home comforts of OPF-1.

Following demate operations over the past few days, Atlantis was lifted over into the transfer aisle of the Vehicle Assembly Building (VAB), in preparation for being towed back to OPF-1 - as opposed to being placed on the OTS (Orbiter Transporter System).

Engineers lowered Atlantis’ landing gear via a ground control unit - which is also used in the OPF to raise and lower the gear for checkouts and final retraction, via an interface box in the cabin which plugs into the gear control system. This is connected via a long cable through an open panel in the hatch.

Atlantis was spotted back in OPF-1 at 23:30.

KSC