On Apr 2, 10:41 am, charliexmur...@yahoo.com wrote:
> On Apr 1, 2:39 pm, "max...@mission51l.com" <max...@mission51l.com>
> wrote:
[quoted text clipped - 7 lines]
>
> Dork.
"There you go again!" Feel better?
> Read the link.
Now that's just ridiculous. I suggest *you* read the page, and quote
whatever you think I missed that answered my question.
> It is an unmanned test flight.
With an eight months slip, by my calculations.
> It is a boilerplate upperstage and CEV
So far as I know, it's no more than a paper tiger.
From Wikipedia:
"Boilerplate is any text that is or can be reused in new contexts or
applications without being changed much from the original"
"Boilerplate, a relatively thick sheet of high quality steel, suitable
for building boilers"
JTM
John Doe - 02 Apr 2008 22:28 GMT
>> It is an unmanned test flight.
>
> With an eight months slip, by my calculations.
Is april 2009 still realistic for that test flight, or is this NASA web
page dating from a few years ago when CEV was to be fully operational by
2010 ?
>> It is a boilerplate upperstage and CEV
The question is valid.
The "unmanned" monicker does not answer whether there will be a CEV
capsule with dummies in it, or wether there will be just a carboard
outline of a capsule.
If it is to be a carboard outline of a capsule, it would mean that
any/all guidance would be elsewhere, and that there would need to be
subsequent unmanned tests for when a capsule will be ready. I would
assume they will want to test re-entry and parachute deployment as well
as landing technology before putting humans in it.
maxson@mission51l.com - 04 Apr 2008 13:15 GMT
> I would assume they will want to test re-entry and parachute
> deployment as well as landing technology before putting humans in it.
Somewhere I read recently that we no longer have the capability to
manufacture the materials needed for the heat shield.
How does the current DIRECT plan compare in this regard?
JTM
charliexmurphy@yahoo.com - 04 Apr 2008 14:01 GMT
On Apr 4, 8:15 am, "max...@mission51l.com" <max...@mission51l.com>
wrote:
> > I would assume they will want to test re-entry and parachute
> > deployment as well as landing technology before putting humans in it.
[quoted text clipped - 5 lines]
>
> JTM
Direct is only the launch vehicle. It uses a "stock" Orion.
Orion uses different heat shield than Apollo
maxson@mission51l.com - 06 Apr 2008 00:25 GMT
On Apr 4, 8:01 am, charliexmur...@yahoo.com wrote:
> On Apr 4, 8:15 am, "max...@mission51l.com" <max...@mission51l.com>
> wrote:
[quoted text clipped - 12 lines]
>
> Orion uses different heat shield than Apollo
"Stock?" With no heat shield and no credible test plan? LOL
I would expect DIRECT to come up with a Dirion.
JTM
charliexmurphy@yahoo.com - 06 Apr 2008 03:56 GMT
On Apr 5, 7:25 pm, "max...@mission51l.com" <max...@mission51l.com>
wrote:
> > Direct is only the launch vehicle. It uses a "stock" Orion.
>
[quoted text clipped - 5 lines]
>
> JTM
Direct is only a replacement for Ares. They aren't looking at the
spacecraft
Derek Lyons - 08 Apr 2008 16:58 GMT
>> I would assume they will want to test re-entry and parachute
>> deployment as well as landing technology before putting humans in it.
>
>Somewhere I read recently that we no longer have the capability to
>manufacture the materials needed for the heat shield.
A lack over emphasized by the GAO and easily remedied by building the
facility required to manufacture the materials.
D.

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Oct 5th, 2004 JDL
Jeff Findley - 08 Apr 2008 18:16 GMT
>>> I would assume they will want to test re-entry and parachute
>>> deployment as well as landing technology before putting humans in it.
[quoted text clipped - 4 lines]
> A lack over emphasized by the GAO and easily remedied by building the
> facility required to manufacture the materials.
And the facility needed to test the full size heat shield.
But I do agree that the GAO went a bit nuts over this issue. I'd think a
segmented ablative heat shield would be doable, considering that the test of
the Gemini capsule with the hatch in the heat shield went well. That and
the hatch in the Soviet TKS VA capsule's heat shield worked too.
Jeff

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Derek Lyons - 09 Apr 2008 18:13 GMT
>But I do agree that the GAO went a bit nuts over this issue. I'd think a
>segmented ablative heat shield would be doable, considering that the test of
>the Gemini capsule with the hatch in the heat shield went well. That and
>the hatch in the Soviet TKS VA capsule's heat shield worked too.
I'd think a segmented shield is doable too, but it is a big jump from
a shield with a hatch to a fully segmented shield. Quite a bit of
R&D, probably too much for Orion as it is (at least theoretically) a
low risk program.
I don't really know how much you gain from a segmented shield though.
NASA needs to put a hell of a lot less money into programs, and hell
of a lot more into technology research.

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Oct 5th, 2004 JDL
Jeff Findley - 10 Apr 2008 15:26 GMT
>>But I do agree that the GAO went a bit nuts over this issue. I'd think a
>>segmented ablative heat shield would be doable, considering that the test
[quoted text clipped - 11 lines]
> NASA needs to put a hell of a lot less money into programs, and hell
> of a lot more into technology research.
That would be nice, but the new lunar program will suck up a hell of a lot
of money. I can envision Ares/Orion cost overruns being paid for by cutting
technology research. NASA will do Ares/Orion without a lot of technology
research. They'll try to stick with current tech.
Jeff

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