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True, but that is true for any large mechanical system. It's usually much less costly to make minor improvements to an already solid and stable system than to toss it out and start new. I would expect Falcon 9 might get some minor part updates as they get more experience and see what are the...

Well, they selected SpaceX Starship as the HLS that will land the astronauts on the moon, so they are going to be waiting for Starship regardless. Their plan B for HLS is Blue Origin, which is even farther away from flight testing of manned versions. Once Starship is sorted out, Superheavy...

Everything about the Artemis program feels...half-hearted? I'm a space flight enthusiast, but Artemis just makes me feel sad. It feels a lot like the pity I feel for middle-aged guys that just have to buy an expensive sports car to relive the glory years of their youth. The whole Artemis program...

Seriously. He acts like the advertisers owed him something, or he thought that Twitter/X is just such an indispensable advertising market that he could extort advertisers as he pleased. He may as well just turn Twitter/X into the online Church of Elon, because pretty soon it will just be him and...

https://store.steampowered.com/app/784150/Workers__Resources_Soviet_Republic/

If anything the causality was reversed - using only O2 at its partial pressure allowed a much lighter pressure hull. They were also doing EVAs so they were pretty much pre-breathing for the entire flight. Even under 3.5 psia, the LM structure was so light that it "inflated" rather like how a...

360° video of the launch from the tower:

I was not aware that the booster also had header tanks. If that is the case, then yes, it should just be a matter of waiting until Starship is clear and the hydrostatic pressure in the header tank and feedlines to stabilize. If they were attempting to operate or relight engines while the...

Possibly, but they still need to ensure that the fuel is in the bottom of the tanks before reigniting the main engines. Perhaps they could do the pitch around maneuver with cold gas thrusters, then gimbal those thrusters to provide a linear ullage thrust. They don't need a lot of thrust - they...

Small external ullage motors on Starship would work for serial staging, but the idea of hot staging is that they minimize stage gravity losses by going full thrust at separation. One thought would be to put some sort of deflector mechanism in the Starship aft skirt that would deflect the thrust...

It seems like the dynamics of hot staging really weren't fully examined, and both stages were lost due to effects of that procedure. SH was decelerated by the thrust of Starship which set up a pogo oscillation in SH which starved the engines and either water-hammered it to death and/or lead to...

Scott Manley's take: Interesting diagnosis - he suggests that the thrust of the Starship during hot staging decelerated SuperHeavy, overwhelming the thrust of the remaining 3 Raptors and causing them to lose ullage. This caused loss of fuel pressure and caused the engine shutdowns, which he...

Did Starship make it to suborbit or did it RUD as well? SH looked pretty clean, all 33 engines did well until the flip and boost back. I think the hot staging ring was an afterthought and the top of SH really wasn't designed or capable of taking thrust like that. I wonder if Starship took...

Sketchpad can be used to render shapes and text in Script MFDs using the update callback, but there doesn't seem to be anything analogous for the HUDs.

In the Help documentation only prestep, poststep, setclasscaps, and postcreation callbacks are indicated for Lua.

I wish the Lua documentation was a little more finished. It may well be, but I haven't seen reference to this particular callback. I was talking about the annotation class, which I don't think is the same thing as Sketchpad? If Sketchpad is how the HUD is rendered and if there is a clbkDrawHud...

I wonder if I can use the annotation class to set certain characters like this?: https://www.alt-codes.net/square-symbols Can I make a string using these characters that the annotation class will recognize? That would actually be pretty neat if so as there are lots of characters available.

Maybe I should clarify as my terminology is lacking. I'm not really interesting in making a VC or a 2D panel. I am trying to replicate the DG landing gear status indicators like this using Lua: I can put text onto this display using annotations like this: But I am rather looking for a more...

I am trying to draw text and rectangles on the main camera view from the cockpit using Sketchpad objects. In the Help Lua documentation there is this statement: In the following, skp is assumed to refer to a valid Sketchpad object. But I have not seen how to make a "valid Sketchpad object" in...