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  [Discuss] Inspiration Mars crewed Mars flyby (Page 2)

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Author Topic:   [Discuss] Inspiration Mars crewed Mars flyby
Tykeanaut
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Posts: 1804
From: Worcestershire, England, UK.
Registered: Apr 2008

posted 03-02-2013 09:45 AM     Click Here to See the Profile for Tykeanaut   Click Here to Email Tykeanaut     Edit/Delete Message   Reply w/Quote
I agree with Prospero, a dead-line is a good idea and gets things done. Perhaps this is one of the problems with manned spaceflight in the US at the moment? Another JFK type commitment is needed with a time limit.

Robert Pearlman
Editor

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From: Houston, TX
Registered: Nov 1999

posted 03-20-2013 08:58 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by dabolton:
How many young, married, flight-experienced couples do we have in the Astronaut Corps right now that could opt-in?
Karen Nyberg was asked by the Houston Chronicle about her and Doug Hurley's interest in participating in this mission.
On Tuesday Nyberg and the other two members of Expedition 37 held a crew news conference at Johnson Space Center, so I took the opportunity to put the question to Nyberg: Have she and Doug discussed it, and would they go?

Her response:

"No, we haven't discussed it per se," she said. "We have a son, and if he couldn't go then I don't think we would go. And there's my dog, and my friends. A question like that is hard to answer until the possibility arises, but right now I'd have to say no. But you never know until it gets down to it."

DavidH
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From: Huntsville, AL, USA
Registered: Jun 2003

posted 03-20-2013 11:34 AM     Click Here to See the Profile for DavidH   Click Here to Email DavidH     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by jiffyq58:
Can someone explain to someone like me who is not an expert on planetary orbits and launch cycles why there is such a big launch window gap between 2018 and 2031? I thought we had a good launch window to Mars every two years. What is different about the period between 2018 and 2031?

My understanding is that it's because it's a free-return round trip. Sending a probe one-way only requires Mars be in the right place when you get there; this requires Earth to be in the right place when you get back.

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Homesteading Space | davidhitt.net

jiffyq58
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From: Durham, NC, USA
Registered: Jun 2011

posted 03-20-2013 01:57 PM     Click Here to See the Profile for jiffyq58   Click Here to Email jiffyq58     Edit/Delete Message   Reply w/Quote
Thanks, David. That makes sense.

johntosullivan
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From: Cork, Cork, Ireland
Registered: Oct 2005

posted 04-28-2013 04:24 PM     Click Here to See the Profile for johntosullivan     Edit/Delete Message   Reply w/Quote
If this is to meet the hard deadline, what is the first milestone, that if not hit, will result in missing the deadline? Given the scale of the mission I'd imagine it's pretty soon and involves bending metal.

Has this been clarified?

DavidH
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From: Huntsville, AL, USA
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posted 04-29-2013 10:36 AM     Click Here to See the Profile for DavidH   Click Here to Email DavidH     Edit/Delete Message   Reply w/Quote
Potentially, there's not a whole lot of metal to bend. What I've seen indicates that they're more interested in obtaining and modifying off-the-shelf products. I would imagine they would have a fair bit of time to work on their original contributions. Choosing an architecture would be the first major milestone, it would seem, from what's been published.

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Homesteading Space | davidhitt.net

johntosullivan
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Posts: 143
From: Cork, Cork, Ireland
Registered: Oct 2005

posted 04-29-2013 05:45 PM     Click Here to See the Profile for johntosullivan     Edit/Delete Message   Reply w/Quote
Okay, to rephrase: When will they have to write a Purchase Order to SpaceX in order to meet the deadline? that has to be soon seeing as SpaceX's order book looks pretty full.

Robert Pearlman
Editor

Posts: 29048
From: Houston, TX
Registered: Nov 1999

posted 04-29-2013 05:50 PM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
To my knowledge, they have yet to decide to use SpaceX or another company for their rocket or spacecraft. They used the Dragon in their initial study, but only as an example.

johntosullivan
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Posts: 143
From: Cork, Cork, Ireland
Registered: Oct 2005

posted 05-02-2013 03:53 PM     Click Here to See the Profile for johntosullivan     Edit/Delete Message   Reply w/Quote
If they haven't chosen a vendor, that moves the first hurdle even closer. Have they indicated a date for vendor selection? Surely they can't miss that deadline if they hope to launch in 2018.

SpaceAholic
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Posts: 3154
From: Sierra Vista, Arizona
Registered: Nov 1999

posted 11-21-2013 05:17 AM     Click Here to See the Profile for SpaceAholic   Click Here to Email SpaceAholic     Edit/Delete Message   Reply w/Quote
Dennis Tito Mars Manned Flyby?
Billionaire Dennis Tito, tired of being told that we can't send humans to Mars just yet, on Wednesday revealed his scheme for launching two astronauts to the red planet as early as December 2017.

Dubbed "Inspiration Mars," the flyby mission would exploit a rare alignment of Earth and Mars that minimizes the time and the fuel it would take to get to Mars and back home again. The astronauts would come within 100 miles of the Martian surface before being slung back to Earth.

"It would be a voyage of around 800 million miles around the sun in 501 days," Tito testified Wednesday at a hearing of the House subcommittee on space. "No longer is a Mars flyby mission just one more theoretical idea. It can be done. Not in a matter of decades, but in a few years."

Editor's note: Threads merged.

cspg
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From: Geneva, Switzerland
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posted 11-21-2013 06:40 AM     Click Here to See the Profile for cspg   Click Here to Email cspg     Edit/Delete Message   Reply w/Quote
In 4 years? This is not serious.

Robert Pearlman
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Posts: 29048
From: Houston, TX
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posted 11-21-2013 06:50 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
It is serious, whether it is doable is a factor of funding and commitment.

But I agree that the chances of it launching in December 2017 are very low.

Tito noted there is a window for a mission by a different trajectory, a mission longer by 88 days that could be flown in 2021.
Tito suggests the Russians (and perhaps Chinese) may use this window for their own crewed flybys. Whether or not that's the case, 2021 seems a more realistic chance for Inspiration Mars, unless they immediately receive the full backing of the U.S. government, which is not likely.

cspg
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From: Geneva, Switzerland
Registered: May 2006

posted 11-21-2013 07:03 AM     Click Here to See the Profile for cspg   Click Here to Email cspg     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Robert Pearlman:
Whether or not that's the case, 2021 seems a more realistic chance for Inspiration Mars, unless they immediately receive the full backing of the U.S. government, which is not likely.
Even more so when the discussion for NASA's budget is to shutdown Cassini or Curiosity... Or drop the ISS in favor of Orion/SLS or vice-versa.

But what does a manned crew flyby will add to what we know (or not) about Mars?

Apollo 8 was not a flyby...

Robert Pearlman
Editor

Posts: 29048
From: Houston, TX
Registered: Nov 1999

posted 11-21-2013 07:26 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
The name of the foundation is not "Scientific Mars" but "Inspiration Mars" and I think that's the purpose of the mission — to inspire us to push our boundaries again.

And I believe there's merit in that. As I've expressed elsewhere before, I feel the mission itself no longer matters. We just need to go somewhere. Once that gate is pushed open, other missions will become much more possible, if for no other reason than they won't have the burden of being first.

We've gotten to a point where we're treating every proposed mission as Apollo 11 rather than Apollo 7. In other words, we don't need to achieve our ultimate goal with the first flight.

Whether it's an asteroid rendezvous mission or a manned flyby of Mars, they needn't be sold as the end all for our space exploration efforts. They can be — and perhaps should be — just shakeout cruises for our new rockets and spacecraft.

jtheoret
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Posts: 99
From: Albuquerque, NM USA
Registered: Jul 2003

posted 11-21-2013 10:25 AM     Click Here to See the Profile for jtheoret   Click Here to Email jtheoret     Edit/Delete Message   Reply w/Quote
I'm all for inspiration and pushing boundaries, however small the steps may seem, and I especially am excited about the possibilities of commercial space in the next few years — but this project is completely unrealistic — it depends entirely on NASA and the US Congress getting on board and contributing potentially hundreds of millions of dollars or more, and committing to doing so within the next few months (we don't even have a budget for next year yet!) — that's not a plan, its a pipe dream.

Companies like SpaceX or Bigelow are actually laying groundwork for people to move into space, and that's exciting. Space Adventures has a realistic shot at sending paying customers on a fly-by of the moon by 2018 — but a fly-by of Mars by even 2021 isn't even a remote possibility at this juncture. I'd rather the inspiration be realistic enough that its at least possible to accomplish — otherwise its just a fantasy, which stands a better chance of making people skeptical and disenchanted about space rather than inspired.

Robert Pearlman
Editor

Posts: 29048
From: Houston, TX
Registered: Nov 1999

posted 03-04-2014 08:10 PM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
Dennis Tito, in an editorial for Space News, confirms Mars Inspiration has turned its focus to a 2021 launch date for a Venus/Mars flyby mission.
By moving the Inspiration Mars mission from 2018 to 2021, NASA's deep-space exploration infrastructure featuring SLS and Orion will have more time for full development and critical testing to support such a mission. The 2021 window is the last short-duration free-return opportunity for a Mars flyby until 2033.

Today, the IMF remains fully committed to its vision to help provide America with a viable, challenging and inspirational mission to Mars as a way to help accelerate our nation's plans for space exploration. However, given the extensive use of NASA assets that are already funded and under development, the strategy to pursue the mission opportunity in 2021 would clearly be the purview of the Congress, the Obama administration and NASA.

As a result of the past year's exhaustive work to move the vision forward, I have become a firm supporter and advocate of NASA's evolving deep-space exploration infrastructure. SLS and Orion represent the capabilities we need to take us wherever we want to go in the solar system.

(Tito's editorial comes on the heels of a congressional hearing where the 2021 flyby was discussed, without specifically referencing Inspiration Mars.)


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