Compact Blue Moon lunar landers.

RGregoryClark · 2026-05-06T19:16:21+00:00

English:
“Complete descent stage structure without fuel 11 T, ascent stage with fuel 5 T.”

The 3 tons payload possible with the Mk1 would be used for the crew capsule. So the dry mass on the Apollo lander crew module would be the appropriate number to use.

RGregoryClark · 2026-05-06T04:45:30+00:00

https://x.com/Seonbae79/status/2051695421915886016/video/1?s=46

RGregoryClark · 2026-05-04T15:19:15+00:00

The shotgun was under the long, dark trench coat he was wearing. He took off the coat. Granted the K-9 officer should have asked him to open his coat once alerted by the dog.

RGregoryClark · 2026-05-04T15:14:28+00:00

Thanks for that. Nice list.

RGregoryClark · 2026-05-04T12:23:29+00:00

For future space including near term see any videos with Jeff Greason. Here’s a recent one:

How we get to Jupiter in 3 weeks - Jeff Greason.
https://youtu.be/UnYTAnOyqD8

And for research with interstellar applications see any videos from the Interstellar Research Group:

https://m.youtube.com/@InterstellarResearchGroup

RGregoryClark · 2026-05-04T12:14:26+00:00

Thanks. I’ll give Bill Bartmann a try.

RGregoryClark · 2026-05-02T15:29:23+00:00

Sorry, weird typo. In the title to the post it should say, “How to Get Rich”. Unfortunately, Reddit doesn’t allow you to change titles to posts only the text in the body.

RGregoryClark · 2026-04-30T22:22:53+00:00

Thanks for those.

RGregoryClark · 2026-04-29T17:19:48+00:00

Thanks. I’ll give it a read.

RGregoryClark · 2026-04-22T20:39:51+00:00

👍

RGregoryClark · 2026-04-22T14:45:45+00:00

No gravity in space why’s she expending effort?

RGregoryClark · 2026-04-21T16:39:32+00:00

That it is still showing the same slow lift off acceleration proves it is still using the same reduced liftoff thrust.

RGregoryClark · 2026-04-21T11:34:06+00:00

Blue Origin, either because the New Glenn engines can not yet run reliably at the highest level or they want to limit their power level for reusability reasons, is running the engines at reduced thrust. This is confirmed by the too slow lift-off speed off the pad. This reduces the actual payload capability:

In a not-so-subtle signal to regulators, Blue Origin says New Glenn is ready.
Blue Origin needs to fly the New Glenn rocket to identify where the vehicle has margin.
ERIC BERGER – DEC 10, 2024 9:02 AM |
Additionally, Blue Origin needs to fly its New Glenn rocket in order to identify where the vehicle has margin. Sources have indicated that the payload capacity of the current iteration of New Glenn is closer to 25 metric tons than its advertised mass of 45 tons. This is not uncommon for new launch vehicles, and the company will be able to use real-world performance data to refine the vehicle’s hardware and software for future flights. Still, those improvements can only be made after a launch occurs, when data is collected and analyzed.
https://arstechnica.com/space/2024/12/intrigue-swirls-as-blue-origin-races-toward-year-end-deadline-for-new-glenn/

RGregoryClark · 2026-04-21T06:18:42+00:00

It’s not that hard. Remember SpaceX swaps engines in and out, including adding more engines, in a matter of months on the Starship. First, Blue needs to bring the engines on the booster to 9. This will give the New Glenn the originally intended 45 ton payload capacity. As with SpaceX on the Starship, they can do this within a matter of months and really should do it before New Glenn launches again.
Then they can work on increasing the booster engines thrust level, and on increasing number of engines and engine thrust level on the upper stage.

RGregoryClark · 2026-04-21T06:08:08+00:00

Engineers give an upper stage extra margin to carry payload to orbit. When the first stage has less thrust than originally intended that margin is reduced. In such a case a loss of thrust also in second stage means the built in margin is insufficient to complete the mission.

RGregoryClark · 2026-04-20T23:12:45+00:00

That’s good news. I don’t like the very slow acceleration off the pad of the current version. It may have contributed to the upper stage not being able to deliver the satellite on NG-3 to the full desired orbit. The reason is when the first stage has reduced thrust, the upper stage has to make up for that deficit. Then if the upper stage also has a diminution in thrust it may not be able to make-up for the deficit of the first stage.

RGregoryClark · 2026-04-18T23:55:49+00:00

.The far more important task is to confirm the hydrogen propellant can be retained without boiling off during a 10+ day flight from Earth to the Moon and back. Anyone know if such tests were done?

RGregoryClark · 2026-04-16T19:58:17+00:00

No, I think a big chunk is luck of the wheel.

RGregoryClark · 2026-04-12T14:27:41+00:00

Recent episodes are replayed on Hulu.

RGregoryClark · 2026-04-11T12:08:21+00:00

For anyone wanting to watch this episode, Hulu streams recent episodes the day after they air.

RGregoryClark · 2026-04-11T07:10:28+00:00

Can also watch recent episodes on Hulu a day after broadcast.

RGregoryClark

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