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Delta-V

This blog focuses on the nuts-and-bolts of space technology. We're interested in the hardware that's actually going into orbit and beyond. We write about what's involved in building, launching, and operating spacecraft, exploration vehicles, and habitats (and what it takes on the ground to support them) today.

Delta-V is written by Stephen Cass, a senior editor at TR who has covered space technology and exploration for nine years, and Brittany Sauser, a space technology reporter at TR.

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Wednesday, November 18, 2009

What Should Be the Next U.S. Space Rocket?

NASA's launch of its Ares test rocket has Buzz Aldrin questioning the vehicle's design and outlining the need for better rockets.

The launch of NASA's new rocket, Ares I-X, on October 28 was the first test flight of a new launch vehicle since the Apollo missions. The flight was spectacular and historic, but the famous Apollo 11 astronaut Buzz Aldrin says it was little more than a half-a-billion dollar political show.

In an editorial in The Huffington Post, Aldrin calls the rocket for "fake", because the Ares I-X was a prototype rocket built to look like the rocket designed to replace the aging space shuttles and take humans to the moon and beyond, Ares I. For example, its four-segment solid rocket boosters were taken from the space shuttle and the fifth segment was a mock, made of steel cylinders. The rocket's upper stage was also a mock-up (the final will include the J-2X engine and Orion crew capsule), but it used real parachutes for recovery of the boosters. The Ares I-X flight objectives were to gather data during the first two minutes of ascent, when the rocket is most likely to fail, to help engineers better design and development the Ares I.

Aldrin writes that technical problems have "haunted the Ares like leftovers from Halloween," and says that, "to stave off critics, three years ago the Project Constellation managers conceived of the 1-X flight to supposedly show some progress."

The concept of the Ares I-X flight, however, mirrors the development of the Saturn family of rockets that carried the astronauts, Aldrin included, to the moon. During the development of Saturn IB, for example, many test flights were conducted when different segments and parts of the rocket were engineered.

NASA's current plan is to use two rockets to return humans to the moon--Ares I for crew and Ares V as a heavy lifter, carrying things like a lunar habitat. Aldrin notes that it took just one rocket during the Apollo missions, and says that two rockets in development means "two price tags. Two ways for failure to occur. Or delays to develop."

Worse yet, neither rocket alone can accomplish a deep space mission. And deep space, such as Mars is, as our friends in the recent Augustine report stated, our destination in space . . . Ares 1 is too small, barely able to lift the crew space capsule. And Ares V is too weak to boost all of the elements together.

What do we need? One rocket for all our deep space missions. Save the taxpayer's money by canceling the Ares 1 and V. And go "back to the future" in designing the big beast.

Fortunately, Aldrin has a plan: use the commercial sector for transportation to the space station--which would save money--and start building a heavy lifter "worthy of Saturn V's successor." He says the moon should be an international affair, opening up the design competition outside of just NASA, and our efforts should be on Mars.

If we bypass a foolish Moon race . . . we will have time to refine the super booster to make sure it is compatible with our deep space goals, like missions flying by comets or asteroids -- or to the moons of Mars. Such a rocket would be ready when the time comes to colonize Mars. No more false starts and dead end rockets.

One thing the Augustine Panel's final report pointed out is that we should be building infrastructure in space, such as refueling technology, so that rockets that are smaller and cheaper could be used for missions that would otherwise be outside their weight class and larger rockets would have their capabilities enhanced.

The decision is still out on what the next U.S. rocket for space travel will be, but whatever it is (and Aldrin confesses he has his own design), he says, "heavy lifting doesn't have to be heavy spending, if we do the right job."

Comments

  • >>> Aldrin says the same I've always said >>>
    .

    happy to read that Buzz Aldrin says the same things I've always said and written on several space forums and blogs

    the 1-X test was/is nearly USELESS to know IF the Ares-1 can fly, since, the latter, is a completely different rocket... that CAN'T FLY:

    http://www.ghostnasa.com/posts/012arescantfly.html

    however, I've also said that was a good idea to accomplish the 1-X test to gather data and info about an SRB launched alone:

    http://www.ghostnasa.com/posts/045suggestions11.html

    but, unfortunately, several weeks after the Ares 1-X and SRB-5 tests STILL no real and full data has been released from NASA and ATK...

    and this BIG DELAY increases the suspect that both tests hasn't gone so good as expected:

    http://www.ghostnasa.com/posts2/057afailedtest.html

    .
    Rate this comment: 12345

    Gaetano Mara...
    11/18/2009
    Posts:139
    Avg Rating:
    2/5
  • [no subject]
    The United States should go with a spaceplane design instead of a rocket. It would be MUCH more efficient, and help decrease launch costs to allow more infrastructure to be placed in orbit. It would make large scale exploration to the Moon and beyond much easier.
    Rate this comment: 12345

    Sumontro
    11/21/2009
    Posts:2
  • spaceship
    Is the Spaceship Two (to be unveiled next Dec 7) an answer to this?
    Rate this comment: 12345

    nluco
    11/24/2009
    Posts:2
    Avg Rating:
    5/5
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