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SLS / Orion / Beyond-LEO HSF - Constellation => Orion and Exploration Vehicles => Topic started by: Chris Bergin on 07/06/2017 08:59 pm

Title: Orion deep in processing for EM-1, planning for following missions
Post by: Chris Bergin on 07/06/2017 08:59 pm
A big round up and status feature article by Philip Sloss after he interviewed an Orion manager. A lot of info in this one:

https://www.nasaspaceflight.com/2017/07/orion-processing-em-1-planning-missions/
Title: Re: Orion deep in processing for EM-1, planning for following missions
Post by: Rocket Science on 07/06/2017 09:08 pm
Nice "beefy" article Philip, thank you! :)
Title: Re: Orion deep in processing for EM-1, planning for following missions
Post by: okan170 on 07/06/2017 11:29 pm
Are they still planning on the "evaluate preforming LOI if vehicle checks out" part of the EM-2 plan?
Title: Re: Orion deep in processing for EM-1, planning for following missions
Post by: psloss on 07/07/2017 12:26 am
Are they still planning on the "evaluate preforming LOI if vehicle checks out" part of the EM-2 plan?
I don't believe that's in the current baseline.  The Item 6 notes in the attached are somewhat related.

We'll keep trying out questions on trajectory details as the opportunity arises.  (Still looking for the right people who can talk about the different trades.)

And this plan is probably subject to change.  Well, to another change.
Title: Re: Orion deep in processing for EM-1, planning for following missions
Post by: psloss on 07/07/2017 03:37 pm
Tangential reference to the MTLI profile in Anatoly Zak's story about the proposed/studied DSG; thread here, with story link:
https://forum.nasaspaceflight.com/index.php?topic=43307.0

The story references this update:
http://russianspaceweb.com/imp-ppb.html#2017

Excerpt:
Quote
That switch apparently put pressure on engineers to reduce the module's mass from more than eight tons to as little as 6.5 tons, probably because the EM-2 was designed to fly a less efficient but safer profile required by the first manned launch of the Orion crew vehicle.
Title: Re: Orion deep in processing for EM-1, planning for following missions
Post by: whitelancer64 on 07/07/2017 03:41 pm
Quote
The first pressure vessel article built was a Ground Test Article that was used for testing at different facilities.

“It was at 31 welded parts and 3900 pounds.  That was kind of the first attempt at the primary structure,” Kearney added.

Quote
“For Exploration Flight Test-1 (EFT-1), we had eighteen welded parts [that weighed] about 3300 pounds.  With Exploration Mission-1, we’re down to seven welded parts and 2700 pounds,” Kearney noted.

That's really impressive to me.
Title: Re: Orion deep in processing for EM-1, planning for following missions
Post by: _INTER_ on 07/07/2017 06:38 pm
Are there any more concrete / official information on who's going to develop those gateway structures? Wouldn't they have to soon start designing those?
Title: Re: Orion deep in processing for EM-1, planning for following missions
Post by: Jim on 07/07/2017 06:47 pm
Are there any more concrete / official information on who's going to develop those gateway structures? Wouldn't they have to soon start designing those?

Have to come up with requirements and study contracts first
Title: Re: Orion deep in processing for EM-1, planning for following missions
Post by: TaurusLittrow on 07/08/2017 01:50 pm
Radiation exposure to the EM-2 crew? Can't be trivial given a 24-hour elliptical(?) HEO and transits through van Allen belts post-TLI and pre-entry.
Title: Re: Orion deep in processing for EM-1, planning for following missions
Post by: Grandpa to Two on 07/09/2017 01:06 am
Philip this is a really great update that included quite a lot of information I wasn't aware of specifically I was pleased on your information on the new ablative covering for high speed re-entry and how it's applied. Thanks for your well written article!
Title: Re: Orion deep in processing for EM-1, planning for following missions
Post by: BrightLight on 10/22/2017 11:58 pm
From:
GAO-18-28, NASA HUMAN SPACE EXPLORATION: Integration ...
https://www.gao.gov/assets/690/687842.pdf
Dated October 2017

"In April 2017, we found that it was unlikely that the ESD programs would achieve the planned November 2018 launch readiness date and recommended that NASA reassess the date. NASA agreed with this recommendation and stated that it would establish a new launch readiness date in fall 2017. Subsequently, in June 2017, NASA sent notification to Congress that EM-1’s recommended launch date would be no earlier than October 2019."
Title: Re: Orion deep in processing for EM-1, planning for following missions
Post by: watermod on 10/25/2017 03:31 pm
Does the service module use hydrazine?

If so how does this effect it's testing and use?

http://spacenews.com/hydrazine-ban-could-cost-europes-space-industry-billions/?utm_content=buffer66078&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer (http://spacenews.com/hydrazine-ban-could-cost-europes-space-industry-billions/?utm_content=buffer66078&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer)
{EU bans hydrazine}
Title: Re: Orion deep in processing for EM-1, planning for following missions
Post by: Overflow on 10/25/2017 03:45 pm
Quote
For Exploration Flight Test-1 (EFT-1), we had eighteen welded parts [that weighed] about 3300 pounds.  With Exploration Mission-1, we’re down to seven welded parts and 2700 pounds

Down 500 pounds and eleven welded parts! Good job KSC.
Title: Re: Orion deep in processing for EM-1, planning for following missions
Post by: ncb1397 on 10/25/2017 07:22 pm
Does the service module use hydrazine?

If so how does this effect it's testing and use?

http://spacenews.com/hydrazine-ban-could-cost-europes-space-industry-billions/?utm_content=buffer66078&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer (http://spacenews.com/hydrazine-ban-could-cost-europes-space-industry-billions/?utm_content=buffer66078&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer)
{EU bans hydrazine}

Probably no effect because fueling is done in US. The propulsion test article firing is done in US as well.