Author Topic: Gateway P&PE award Thread  (Read 15563 times)

Offline pochimax

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Re: Gateway P&PE award Thread
« Reply #40 on: 11/12/2019 10:53 am »
https://blog.maxar.com/space-infrastructure/2019/power-and-propulsion-element-five-questions-with-maxars-tim-cole

Maxar: What’s up next for the program?

Tim Cole: Now that we’ve completed the Systems Requirements Review, the next major milestone is the Phase 0 System Safety Review, taking place in November. The Phase 0 System Safety review will help to ensure the spacecraft’s reliability and verify that the safety methodology that we’re implementing is robust and aligns with NASA’s expectations. After that, we will host a Preliminary Design Review in February 2020 to verify that our Power and Propulsion Element design meets system requirements.


The Application of Advanced Electric Propulsion on the NASA Power and Propulsion Element (PPE)
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20190032114.pdf

• Propulsion – Combined 49 kW of EP spread over 6 EP strings that leverage NASA development of 12.5 kW Electric Propulsion (EP), and internal Maxar advanced 6 kW EP development, with Maxar expertise in system accommodation of EP elements [2+4 engines]

• Busek BHT-6000 Thruster
‒ BHT-6000 is an extension of the BHT-5000 thruster currently in it life qualification test

2.34 N thrust with 6 engines, at 49 kW power, 8 kg of xenon per day at flow rate of 93 mg/sec

Offline ncb1397

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Re: Gateway P&PE award Thread
« Reply #41 on: 11/21/2019 06:34 am »
Quote
PASADENA, Calif., Nov. 08, 2019 (GLOBE NEWSWIRE) -- Aerojet Rocketdyne and NASA recently demonstrated an Advanced Electric Propulsion System (AEPS) thruster at full power for the first time, achieving an important program milestone. Aerojet Rocketdyne-developed AEPS thrusters are slated to be used on the Power and Propulsion Element of NASA’s Gateway, the agency’s orbiting lunar outpost for robotic and human exploration operations in deep space.

The state-of-the-art AEPS Hall thruster operated at 12.5 kilowatts (kW) as part of its final conditioning sequence during testing at the Jet Propulsion Laboratory in Pasadena, California. The thruster demonstrated stable operation at power levels ranging from 4.2 kW to 12.5 kW. Full electric propulsion thruster string integration will take place early next year.

“Our AEPS thruster has demonstrated the high levels of power needed to operate the Power and Propulsion Element, and by extension, the entire Gateway,” said Aerojet Rocketdyne CEO and President Eileen Drake. “With a successful full power test complete, Aerojet Rocketdyne is ready for the next phase of our advanced electric propulsion system in support of NASA’s Artemis program.”

The Gateway’s Power and Propulsion Element is a high-power solar electric propulsion spacecraft capable of producing 60 kW – which is three times more powerful than current capabilities. Two Aerojet Rocketdyne AEPS thruster strings will be employed on the spacecraft. Each string is comprised of a Xenon Hall thruster, a power processing unit that controls the electric power to the thruster, and a Xenon flow controller which controls the flow of Xenon to the thruster.

The AEPS thruster is part of a larger Aerojet Rocketdyne AEPS development effort under contract with NASA’s Glenn Research Center. Early system integration tests for AEPS were successfully conducted last August, proving the system’s ability to successfully convert power at a high efficiency level, producing minimal waste heat. NASA aims to launch the Power and Propulsion Element in late 2022 in support of the Artemis program, which will land the first woman and next man on the Moon by 2024.
https://www.rocket.com/article/advanced-electric-propulsion-thruster-nasa%E2%80%99s-gateway-achieves-full-power-demonstration

Offline BrightLight

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Re: Gateway P&PE award Thread
« Reply #42 on: 12/13/2019 03:46 pm »
Current Status at Maxar
 2019 Maxar Technologies 
- Kickoff (June 2019)
- Completed System Requirements Review
(September 2019)
- Completed Phase 0 Safety Review
- Currently in Preliminary Design Phase
− Long lead hardware on order
− Preliminary Design Review (February
2020)
− Phase 1 Safety Review (April 2020)
− Baseline Concept Review (May 2020)

from:
The Maxar Power and Propulsion Element: Third Generation Commercial Solar Electric Propulsion
Scott Tilley, Ty Lee. Maxar Space Infrastructure, Palo Alto, CA 11 December 2019
FISO Working Group
« Last Edit: 12/13/2019 03:51 pm by BrightLight »

Offline JohnFornaro

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Re: Gateway P&PE award Thread
« Reply #43 on: 12/15/2019 12:10 pm »
"Gateway is essential for 2024 landing"... I call BS on that one Jimmy B...

Well, it IS essential the way they've designed the architecture.  Remember, the 2024 landing isn't supposed to be the ONLY landing.

I'd put in a plug for a 1000 yard diameter, one RPM ring station at EML-1, but I won't, because I just realized this was a post from May!
« Last Edit: 12/15/2019 12:11 pm by JohnFornaro »
Sometimes I just flat out don't get it.

Offline gosnold

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Re: Gateway P&PE award Thread
« Reply #44 on: 12/27/2019 04:14 pm »

Online Markstark

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Re: Gateway P&PE award Thread
« Reply #45 on: 12/27/2019 05:06 pm »
FISO telecon on the PPE:

http://fiso.spiritastro.net/telecon/Tilley-Lee_12-11-19/

They mentioned Falcon Heavy as the launch vehicle for this mission in late 2022. Is this new info? I recall them saying New Glenn at the time when they were selected in May.

Offline schaban

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Re: Gateway P&PE award Thread
« Reply #46 on: 12/27/2019 05:14 pm »
on a slide still new glen but next slide in presentation explicitly say launching on FH:

Offline TrevorMonty

Re: Gateway P&PE award Thread
« Reply #47 on: 12/27/2019 06:34 pm »
on a slide still new glen but next slide in presentation explicitly say launching on FH:
If they want it to launch on time then FH is better bet. While Blue is targetting 2021 for NG their no guarantee it will avaliable for PPE 2022 launch. This is a new LV delays getting it operational are normal.

Online Markstark

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Re: Gateway P&PE award Thread
« Reply #48 on: 12/27/2019 09:49 pm »
on a slide still new glen but next slide in presentation explicitly say launching on FH:
Well that’s not confusing at all lol. The Maxar rep in the recording said FH.

Offline Zed_Noir

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Re: Gateway P&PE award Thread
« Reply #49 on: 12/29/2019 12:45 pm »
on a slide still new glen but next slide in presentation explicitly say launching on FH:

 ;)  Hazard a guess that Maxar got a little something for showing the New Glenn image on the presentation slide from Blue.

Re: Gateway P&PE award Thread
« Reply #50 on: 12/29/2019 03:43 pm »
on a slide still new glen but next slide in presentation explicitly say launching on FH:

 ;)  Hazard a guess that Maxar got a little something for showing the New Glenn image on the presentation slide from Blue.

They also said these slides were dated. 

Online yg1968

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Re: Gateway P&PE award Thread
« Reply #51 on: 03/29/2020 12:10 am »
The selection statement for the PPE spaceflight demonstrator award has been released.  Here is the evaluation summary table and a copy of the pdf.  Other earlier documents relating to this solicitation can be found here:

https://www.fbo.gov/spg/NASA/GRC/OPDC20220/80GRC018R0005/listing.html

Here is the updated link to these documents:
https://beta.sam.gov/opp/7d969b26d89532153ed3f4a89443999a/view?keywords=80GRC018R0005%2F&sort=-relevance&index=&is_active=false&page=1

Offline su27k

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Re: Gateway P&PE award Thread
« Reply #52 on: 04/30/2020 04:13 am »
GAO Assessments of Major Projects lists the launch vehicle as Falcon Heavy.


Offline pochimax

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Re: Gateway P&PE award Thread
« Reply #53 on: 05/07/2020 07:03 pm »
So, now in the plan, more time for working on PPE.

https://spaceflightnow.com/2020/05/06/nasa-plans-to-launch-first-two-gateway-elements-on-same-rocket/

The new plan for a single launch in 2023 buys time for engineers developing the PPE, which will be built by Maxar Technologies.

The PPE will be fitted with large roll-out solar arrays to generate electricity. The propulsion system will consist of high-power solar-electric thrusters developed by Aerojet Rocketdyne.

“It took the schedule pressure off the PPE so we are now able to go ahead and integrate any changes to the PPE to make it even a better longer-term solution by changing the momentum wheels that we use for it, the power handling system, providing more access for some of the robotic arms will be used,” Loverro said. “So we were able to actually make the changes that really create a better long-term solution.

Offline ChrisGebhardt

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