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uhoh
uhoh
1:22 AM
 
Erin Anne
Erin Anne
1:34 AM
@uhoh gestures to a day ago
 
uhoh
uhoh
oh look at that! :-) I just got excited and insta-pasted
@ErinAnne Starting at 19:11 Bruno talks about "pogo", "buzz" and "screech". And when I heard "we have pogo-absorbing features in this design" I wondered if that kind of thing (with more background) would be an answer to:
13
Q: Do rocket engines have shock absorbers?

uhohWith a million pounds of thrust and many g of acceleration and a significant fraction of a g of vibration, connecting the engine to the rocket can't be trivial. At launch the mass is very high and maybe inertia keeps the low frequency vibrations down, but as propellants run out, maybe that becom...

rockets propulsion engine-design vibration
depending on what those "pogo-absorbing features" are.
 
 
1 hour later…
uhoh
uhoh
2:49 AM
0
Q: Basics of Tracklet-less Heliocentric Orbit Recovery (THOR) - simple breakdown of how it works?

uhohThe New York Times's April 30, 2024 Killer Asteroid Hunters Spot 27,500 Overlooked Space Rocks begins: With the help of Google Cloud, scientists churned through hundreds of thousands of images of the night sky to reveal that the solar system is filled with unseen objects. and includes the follo...

observational-astronomy orbital-mechanics asteroids data-analysis near-earth-object
asked in Astronomy SE
 
 
5 hours later…
fyrepenguin
fyrepenguin
8:07 AM
@uhoh I was assuming that one of the features to prevent pogo was the internal baffles/grid structure, but upon rewatching that section I noticed that he doesn’t actually specify
I am curious regarding his mention of screech and methalox engines, considering that the Raptor 2 exists - I wonder if they also had to solve that problem
 
 
3 hours later…
uhoh
uhoh
11:30 AM
@fyrepenguin it sounds like a great new question or two!
 
 
2 hours later…
XKCD
XKCD
1:08 PM
 

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