Space

2037 readers

77 users here now

A community to discuss space & astronomy through a STEM lens

Rules

Be respectful and inclusive. This means no harassment, hate speech, or trolling.
Engage in constructive discussions by discussing in good faith.
Foster a continuous learning environment.

Also keep in mind, mander.xyz's rules on politics

Please keep politics to a minimum. When science is the focus, intersection with politics may be tolerated as long as the discussion is constructive and science remains the focus. As a general rule, political content posted directly to the instance’s local communities is discouraged and may be removed. You can of course engage in political discussions in non-local communities.

Related Communities

🔭 Science

🚀 Engineering

🌌 Art and Photography

Other Cool Links

Astronomy Picture of the Day Archive
Live Space Dashboard

founded 3 years ago

MODERATORS

Congress warned that NASA’s current plan for Artemis “cannot work” - Ars Technica (arstechnica.com)

submitted 1 month ago by otters_raft@lemmy.ca to c/space@mander.xyz

26 comments fedilink hide all child comments

In recent months, it has begun dawning on US lawmakers that, absent significant intervention, China will land humans on the Moon before the United States can return there with the Artemis Program.

So far, legislators have yet to take meaningful action on this—a $10 billion infusion into NASA’s budget this summer essentially provided zero funding for efforts needed to land humans on the Moon this decade. But now a subcommittee of the House Committee on Space, Science, and Technology has begun reviewing the space agency’s policy, expressing concerns about Chinese competition in civil spaceflight.

you are viewing a single comment's thread
view the rest of the comments

[–] mojofrododojo@lemmy.world 1 points 1 month ago (1 children)

https://en.wikipedia.org/wiki/Progress_(spacecraft)#Design

https://en.wikipedia.org/wiki/Zvezda_(ISS_module)#Design

you realize there's a difference between maneuver thrusters and boosters right? they use the soyuz and crew dragons to boost. they use the hypergolics to maneuver.

https://www.china-in-space.com/p/tianzhou-9-resupply-mission-blasts

"Propellants to refuel Tiangong’s maneuvering and attitude control thrusters are set to be delivered too" this is not boost, this is maneuver.

https://spacenews.com/chinas-shijian-spacecraft-separate-after-pioneering-geosynchronous-orbit-refueling-tests/

this just happened two weeks ago, and if you read the article:

"The separation could mark a successful conclusion to a world-first refueling operation in GEO. However, neither China’s space authorities nor the satellites’ manufacturer have commented on the mission since the launch of Shijian-25 in January."

that COULD is doing heavy lifting, why hasn't the news come out from official sources?

[–] burble@lemmy.dbzer0.com 1 points 1 month ago (1 children)

Ah, so they are refuelling Zvezda and Tiangong, but it doesn't count. I acknowledge that they aren't transferring cryo fuels. I just said they're regularly transferring prop.

Zvezda can orbit raise, btw.

https://www.russianspaceweb.com/iss_sm.html

two orbit-correction engines, KD, designated S5.79 with a thrust of 300 kilograms each and 32 small thrusters, DMT, designated 11D428A-10 and 11D428-14. They were developed at NIIMash and had a thrust of 12.5 kilograms each and designed to control the course, yaw and bank

Refuelling Tiangong's xenon hall effect thrusters probably doesn't count, so I guess I'll ignore it.

[–] mojofrododojo@lemmy.world 1 points 4 weeks ago

I acknowledge that they aren’t transferring cryo fuels.

alright.

it's gonna be a neat trick to watch two spacecraft line up and xfer lox or liquid methane. one part of me wonders if they'll try to erect a sunshade or limit it to night portions of the orbit because trying to figure out the big problem - pumping cryogenic liquids in that env is hard enough without gigantic temp swings on the exteriors and tubes/piping....

I do not think it'll work the first time lol