sábado, 30 de Agosto de 2008

Últimas notícias: Presidente da NASA pede para que se avalie a possibilidade de operar o Shuttle até 2015!

A NASA está a aproximar-se de uma situação crítica para o período entre 2010 e 2015. Está neste momento previsto que o Shuttle deixe de operar em 2010, e que o seu sucessor, a Orion, só entre em funcionamento em 2015 - se tudo correr bem, o que não está a acontecer. Durante esse período, os EUA dependerão totalmente da Rússia para colocar astronautas a bordo da Estação Espacial Internacional!

Com o azedar das relações entre os EUA e a Rússia, decorrente da recente guerra na Geórgia, é bem possível que os EUA se vejam afastados da ISS durante, pelo menos, esses 5 anos! E não nos esqueçamos que a ISS foi, em grande parte, construída pelos EUA!

Assim, e contrariando as afirmações recentes de Wayne Hale (ver último post), o presidente da NASA Michael Griffin veio agora pedir que se estude a viabilidade de manter o Space Shuttle em operações durante esse período de 5 anos.

Pessoalmente considero esta uma notícia de enorme importância, e extremamente positiva. Espero que dê tempo à NASA para reavaliar (cancelar?) o desastroso projecto Orion, e lhe permita criar um novo sistema de acesso ao Espaço que seja realmente inovador e económico.

Fonte: Orlando Sentinel


EXCLUSIVE: NASA to study extending shuttle era to 2015
posted by Mark Matthews on Aug 29, 2008 12:12:22 PM

CAPE CANAVERAL -- NASA Administrator Michael Griffin has ordered his subordinates to study how the agency could fly the space shuttle beyond its planned retirement in 2010, according to an internal e-mail obtained by the Orlando Sentinel.

The decision signals what could be a huge change in NASA policy. Griffin repeatedly has rejected the notion of extending the shuttle era beyond its 2010 retirement date, arguing it could cripple the fledgling Constellation program, a system of new rockets and capsules meant to replace the shuttle in 2015.

But Griffin has been under enormous external pressure. Sen. John McCain recently asked the White House to stop dismantling parts of the shuttle program for at least a year. At the same time, eroding relations with Russia have motivated lawmakers to find a way to fill the five-year gap between the shuttle's retirement and the maiden voyage of Constellation in 2015. The current plan calls for NASA to buy Russian spacecraft during the gap.

One NASA official said such "what-if studies" represent "prudent planning," especially in light of suggestions made by McCain, the Republican presidential nominee, who would dictate the agency's future if he captures the White House.

But the email, sent on Wednesday, August 27, by John Coggeshall, manager of "Manifest and Schedules" at Johnson Space Center in Houston, suggested that the analysis was more than just a contingency study.

"We want to focus on helping bridge the gap of US vehicles travelling to the ISS as efficiently as possible," it said.

The upcoming study raised the idea of retiring one of the three remaining orbiters, possibly for spare parts. "(We) don't necessarily need all 3 orbiters either," said the email. "We have been encouraged not to focus on a certain set of assumptions or costs," said the email.

But cost has been the exact reason why Griffin has dismissed the idea of extending the shuttle era. To have enough money to build Constellation's Ares 1 rocket and Orion crew capsule, NASA must spending stop money on shuttle flights. At one point last year, he estimated that it would cost as much as $4 billion a year to fly the shuttle beyond 2010.

NASA' current budget is about $17 billion.

"Continuing to fly the Shuttle beyond 2010 does not enhance U.S. human spaceflight capability, but rather delays the time until a new capability exists and increases the total life cycle cost to bring the new capability on line," he told Congress in November.

Another worry: NASA already has begun unplugging parts of the shuttle system. It has already terminated many contracts with vendors who make shuttle parts and NASA facilities already have begun converting its systems to handle the new Constellation program.

Wayne Hale, a NASA deputy assistant administrator and until recently the shuttle-program manager, has said that this fall marks the point of no return. That's when NASA is supposed to start ripping out the giant welding equipment and other machinery at Michoud Assembly Facility in New Orleans, which makes the shuttle's giant external fuel tank.

In a blog posted Thursday, Hale said that flying shuttle and building Constellation would strain NASA's budgets and overextend its workforce. "Hey, I am the biggest shuttle hugger there is. I think it is the best spacecraft ever built. But I also deal in the real world," he wrote.

"Where does the money come from? Where do the people -- who should be working on the moon rocket -- where do they come from? We started shutting down the shuttle four years ago. That horse has left the barn," he wrote.


Email referido no artigo acima:

From: Coggeshall, John C. (JSC-MA)
Sent: Wednesday, August 27, 2008 4:23 PM
To: Larochelle, Joseph K. (JSC-OM); Fuller, Sean M. (JSC-OC); Gensler, Janejit T. (JSC-OM3); Feldman, Holly (JSC-OM); Overton, Thomas L. (KSC); Ford, Clark D. (KSC); Magendie, Brian (MAF-NASA_MAF)[Lockheed Martin Space Systems Com; Dwyer, Kenneth J. (JSC-MV6); Jackson, Melodie M. (KSC); 'Lemoine, Patrick K. (KSC)[USA]'; Davidson, Dennis R. (JSC-MM)

Cc: Lyons, Douglass E. (KSC); Phillips, Pepper (KSC); Wyche, Vanessa E. (JSC-ZD); Castle, Robert E. (JSC-ZD); Beck, Kelly B. (JSC-DA); Rasco, Dorothy S. (JSC-MM)

Subject: Shuttle extension assessment

The SSP program in conjunction with Cx and ISS have been asked by the administrator to put together some manifest options to assess extending shuttle flights to 2015. SSP would like to have some options developed for review by senior management by the end of September. The result of the review might be a formal budget assessment of a option(s).

We will start by using the manifest team to put together a option(s). I would like to start getting some initial thoughts next week. What I want to do is focus in on initially is what would make sense given the current conditions with ISS and Cx. We have been encouraged not to focus on a certain set of assumptions or costs. We will probably develop multiple options. In my initial discussions with John these are the things I would like to think about

- We cant just spread out the 10 flights to 2015, that does not support ISS requirements
- We will need some new ETs and that’s the long lead item so we may need a little "streching".
- We will have to put orbiters in OMDP
- We don’t want to get in the way of Cx development by holding on to facilities they need (HB3, MLP, Pad , Crawler, Engine Test stands etc)

- Flight rate is not given
- Don’t necessarily need all 3 orbiters either

We want to focus on helping bridge the gap of US vehicles traveling to the ISS as efficiently as possible.

Joe LaRochelle will have some preliminary ISS requirements for us next week, and Ken is going to work on OMDP thoughts.

Thanks, and this should actually be fun. Well as fun as anything gets if you’re a manifest dweeb.

John Coggeshall
JSC-MA / Manifest and Schedules

Sem comentários:

KSC