Comments on: May 19, 2025 Quick space links

By: Jeff Wright

Jeff Wright — Thu, 22 May 2025 16:09:23 +0000

A 3D printed engine failed recently.

Now, let’s say you got a rather simply shaped engine from the 3D print shop.

Might you fill voids with something like TPS materials?

Put the engines in orbit and heat them–then chip out the tile material that kept it from melting into a ball in microgravity.

Would that get rid of powdery grain fails?

By: Edward

Edward — Wed, 21 May 2025 23:32:14 +0000

Five years ago, Scott Manley showed how a rotating detonation rocket engine works, and he explains the efficiency advantage.
https://www.youtube.com/watch?v=rG_Eh0J_4_s (11 minutes)

By: GeorgeC

GeorgeC — Wed, 21 May 2025 03:23:52 +0000

I found a video of the RDE rocket with a closeup of the engine https://youtu.be/GslZnuDjQqI?feature=shared

By: Richard M

Richard M — Wed, 21 May 2025 00:01:45 +0000

This was the May 16, 2025 launch. Jay calls this an “insane headline,” adding “I remember back when there were only about 1000 active satellites total, as in for the whole world.”

Which was….during the Obama Administration. You know, 2012.

Think about that.

There are now (as of May 2025) over 12,000 active satellites in Earth orbit. Over 7,000 of these are SpaceX Starlink satellites.

Think about *that*.

By: Jeff Wright

Jeff Wright — Tue, 20 May 2025 23:13:49 +0000

Now that the the confirmation hearings are done the pipsqueak is safe to pipe up.

How brave

(Slow clap)