Author Topic: Volatiles Investigating Polar Exploration Rover (VIPER)  (Read 38169 times)

Offline TrevorMonty

Would they build two rovers at same time?. Means they have spare for 2nd  mission if there are problems with this one. Even if mission is success may want second mission to collect additional data.

Offline yg1968

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Re: Volatiles Investigating Polar Exploration Rover (VIPER)
« Reply #21 on: 06/11/2020 06:31 pm »
Would they build two rovers at same time?. Means they have spare for 2nd  mission if there are problems with this one. Even if mission is success may want second mission to collect additional data.

NASA said that they only have one rover.

Offline Phil Stooke

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Re: Volatiles Investigating Polar Exploration Rover (VIPER)
« Reply #22 on: 06/11/2020 06:33 pm »
Probably a lot of flight spares which would help build a second one later.  Going to more than one place would be useful in the long run.

Offline yg1968

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Offline TrevorMonty

Probably a lot of flight spares which would help build a second one later.  Going to more than one place would be useful in the long run.
Thanks.

Offline yg1968

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Re: Volatiles Investigating Polar Exploration Rover (VIPER)
« Reply #25 on: 06/12/2020 01:11 am »
Quote from: Thomas Zurbuchen
This was a vigorous selection process and I want to thank everyone for their hard work. We reviewed 7 proposals from our robust Commercial Lunar Payload Services (CLPS) pool. Stay updated on future commercial @NASAMoon announcements:
https://www.nasa.gov/content/commercial-lunar-payload-services

https://twitter.com/Dr_ThomasZ/status/1271192768992468993
« Last Edit: 06/12/2020 01:31 am by yg1968 »

Offline Steven Pietrobon

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Re: Volatiles Investigating Polar Exploration Rover (VIPER)
« Reply #26 on: 06/12/2020 09:52 am »
Surprising that the Griffin used M20 as fuel but the smaller Peregrine lander uses MMH.

Never heard of M20 before, which seems to be 20% methanol and 80% petrol.

https://www.intechopen.com/books/biofuels-challenges-and-opportunities/comparison-of-ethanol-and-methanol-blending-with-gasoline-using-engine-simulation

« Last Edit: 06/12/2020 09:53 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Lodrig

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Re: Volatiles Investigating Polar Exploration Rover (VIPER)
« Reply #27 on: 06/12/2020 06:54 pm »
Surprising that the Griffin used M20 as fuel but the smaller Peregrine lander uses MMH.

Never heard of M20 before, which seems to be 20% methanol and 80% petrol.

https://www.intechopen.com/books/biofuels-challenges-and-opportunities/comparison-of-ethanol-and-methanol-blending-with-gasoline-using-engine-simulation

Wow, is that a first time in space?

Offline yg1968

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Re: Volatiles Investigating Polar Exploration Rover (VIPER)
« Reply #28 on: 07/08/2020 10:44 pm »
Presentation on VIPER:

« Last Edit: 08/22/2020 12:57 am by yg1968 »

Offline yg1968

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Re: Volatiles Investigating Polar Exploration Rover (VIPER)
« Reply #29 on: 08/17/2020 09:29 pm »
Quote from: Marcia Smith
Now Tony Colaprete on VIPER.

https://twitter.com/SpcPlcyOnline/status/1295458495081390081

Quote from: Marcia Smith
Colaprete -- PDR scheduled for Aug 26-27.  Launch in November 2023.

https://twitter.com/SpcPlcyOnline/status/1295458910476869637

Quote from: Marcia Smith
Colaprete -- VIPER required measurements

https://twitter.com/SpcPlcyOnline/status/1295462226896224262

Quote from: Marcia Smith
Colaprete -- VIPER dimensions.  It is solar powered.  MER-sized, about 450 kg.

https://twitter.com/SpcPlcyOnline/status/1295462884391215104

Quote from: Marcia Smith
Colaprete -- we have a ride!  New paradigm.  Astrobotic will deliver us on Griffin lander.  Going very well.

https://twitter.com/SpcPlcyOnline/status/1295463594474299392


Offline yg1968

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« Last Edit: 08/17/2020 09:41 pm by yg1968 »

Offline yg1968

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Offline gosnold

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Re: Volatiles Investigating Polar Exploration Rover (VIPER)
« Reply #32 on: 09/24/2020 07:19 pm »
The rover operates semi-autonomously because the two-way latency is 10-30s according to the presentations. That's really high, the light-travel latency should be less than 3s. Is the DSN the cause of the rest of the latency? Is there some explanation of why they did not go for near real-time operations with no almost no autonomy?

Offline TrevorMonty

The Fiso presentation. Much same as above along with podcast.

http://fiso.spiritastro.net/telecon/Andrews_9-23-20/

Offline turbopumpfeedback2

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Re: Volatiles Investigating Polar Exploration Rover (VIPER)
« Reply #34 on: 09/24/2020 08:59 pm »
What happend with PDR? We are waiting for this for the last several years.

Offline tbellman

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Re: Volatiles Investigating Polar Exploration Rover (VIPER)
« Reply #35 on: 03/03/2021 11:34 pm »
Cost increase from previous estimate of $250 million, to $433.5 million:

https://spacenews.com/viper-lunar-rover-mission-cost-increases/

Quote from: Jeff Foust, Spacenews
A NASA rover mission to look for ice at the south pole of the moon has passed a key review, but now costs significantly more than previously advertised.
[...]
NASA didn’t disclose the reason for the cost increase, but NASA officials said in June 2020 that they were postponing VIPER’s launch by about a year to late 2023 to change the rover’s design so it can meet the goal of operating for 100 days on the lunar surface. At the time, the agency declined to comment on VIPER’s cost.

Offline yg1968

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Re: Volatiles Investigating Polar Exploration Rover (VIPER)
« Reply #36 on: 04/13/2021 01:57 pm »
Quote from: Astrobotic
We're going to the Moon again - this time with @SpaceX!  Falcon Heavy will carry our Griffin lunar lander to the Moon in late 2023 along with NASA’s water-hunting Volatiles Investigating Polar Exploration Rover (VIPER).

https://twitter.com/astrobotic/status/1381955810213912577


Astrobotic selects Falcon Heavy to launch NASA’s VIPER lunar rover:
https://spacenews.com/astrobotic-selects-falcon-heavy-to-launch-nasas-viper-lunar-rover/
« Last Edit: 04/13/2021 02:05 pm by yg1968 »

Offline yg1968

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Re: Volatiles Investigating Polar Exploration Rover (VIPER)
« Reply #37 on: 04/18/2021 07:25 pm »
Moon Lander Mockup Arrives for Testing with VIPER Rover:
https://www.nasa.gov/image-feature/moon-lander-mockup-arrives-for-testing-with-viper-rover

I missed this when it came out last month.
« Last Edit: 04/18/2021 07:34 pm by yg1968 »

Offline yg1968

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Re: Volatiles Investigating Polar Exploration Rover (VIPER)
« Reply #38 on: 05/22/2021 01:46 am »
Quote from: Ames
Our VIPER Moon rover will roam the Moon's surface in search of water ice. The mission, launching in late 2023, will bring us a step closer to our goal of a sustainable human presence on the Moon under our #Artemis program:

https://go.nasa.gov/2T9qGUj

https://twitter.com/NASAAmes/status/1395544023163707392

Quote from: NASA
VIPER progress continues moving full speed ahead. NASA’s investment in the mid-size rover for mission development costs and operations is $433.5 million. The current delivery contract value for Astrobotic to deliver VIPER to the Moon through CLPS is approximately $226.5 million.
« Last Edit: 05/22/2021 02:02 am by yg1968 »

Offline yg1968

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Re: Volatiles Investigating Polar Exploration Rover (VIPER)
« Reply #39 on: 05/22/2021 01:58 am »
What happend with PDR? We are waiting for this for the last several years.

PDR was completed in February 2021.

VIPER Mission Progressing Toward 2023 Launch:
https://www.nasa.gov/feature/viper-mission-progressing-toward-2023-launch

Quote from: VIPER Project Manager, Dan Andrews
I’m very proud to share that the VIPER team held a successful preliminary design review, or PDR, and the recent, successful confirmation review, known formally as key decision point C, shows the VIPER project team successfully demonstrated to NASA leadership that it can meet all the requirements with an acceptable level of risk within cost and schedule restraints. This confirmation clears the way to officially implement the final design of the rover, putting the mission an important step closer to launching to the Moon’s South Pole in late 2023.

The VIPER team now continues to detail our design baselined at the PDR, as it looks towards the next major milestone, critical design review, in the fall of 2021.

- Dan Andrews, VIPER project manager
« Last Edit: 05/22/2021 02:00 am by yg1968 »

 

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