Questions tagged [vibration]

Questions regarding quick oscillations known as vibrations.

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CubeSat dispensers: amplify or dampen vibration loads on spacecraft?

CubeSat world: has anybody run a vibration test where you put accelerometers both on the dispenser (or shaker plate) and your spacecraft inside the dispenser? For the SunCET CubeSat, we're trying to ...
James Paul Mason's user avatar
3 votes
0 answers

how to estimate the fatigue life of a launch vehicle in conceptual or preliminary design?

A launch vehicle undergoes vibrational loads during ascent (and descent for reusable ones), how can the fatigue life be estimated in conceptual or preliminary design? Is there any data or standards ...
جامکلو حسن's user avatar
1 vote
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Mount Lightband with Screws into Helicoils?

Quick question; provided sufficient rigidity and accommodation for tear out in the underlying structure, can you fasten a Planetary Systems Motorized (or Advanced) Mark 2 lightband ESPA interface with ...
D. Hodge's user avatar
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4 votes
0 answers

How much does annual maintenance of a vibration table cost?

The company I work for produces hardware for spacecraft and we routinely have to test that hardware to ensure it meets the stringent requirements for random vibration environments on the missions they ...
Terrance Yee's user avatar
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11 votes
1 answer

Vibration and noise during launch of the Saturn V and Spaceshuttle in comparison?

I just saw a TV docu about the Apollo mission. Apollo 8 astronaut William Anders said the vibrations and noise during launch were much heavier than expected. I later heard a speech by the Shuttle ...
Uwe's user avatar
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5 votes
1 answer

Could a fairing vacuum protect the payload from acoustic loads?

This is a weirder question, but here it goes: During launch, a payload (let's say a satellite) undergoes intense shaking and acoustic loads. This is known from the launcher parameters and the ...
Yuri-M-Dias's user avatar
5 votes
2 answers

Ariane 4 Random Vibration

In the plot above, taken from space craft system engineering book, chapter 2. This is the plot showing the random vibration power spectrum of Ariane 4. The unit is $g^2/Hz$, I understand how the ...
zephyr0110's user avatar
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5 votes
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What were Hubble's jerk and jounce limits? Did JWST have the same?

From Wikipedia: In physics, jerk is the rate of change of acceleration; that is, the derivative of acceleration with respect to time, and as such the second derivative of velocity, or the third ...
uhoh's user avatar
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7 votes
2 answers

Why doesn't this SpaceX rocket test fire use water sprays?

I know that rocket launches always have water towers spray water all around when the rocket is launching to suppress the extreme sounds and shockwaves generated by the launch and ensure the rocket ...
David says Reinstate Monica's user avatar
13 votes
4 answers

Do rocket engines have shock absorbers?

With 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 ...
uhoh's user avatar
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8 votes
1 answer

Do astronauts hear audible creaking from spacecraft structures?

I once heard an audio tape compiled from data downloads from a high rate accelerometer on the Olympus satellite, from which one could hear thruster firings, valve switching and reaction wheel ...
Puffin's user avatar
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7 votes
2 answers

Do processors need to be hardened against vibration?

Rockets are very loud, and seems to have a lot of vibration caused by turbulence. They're also run by microchips, which I tend to think of as fragile. Do the microchips need to be specially designed ...
raptortech97's user avatar
9 votes
3 answers

What G-forces do different launchers cause?

What G-force is the payload exposed to on different launchers? Are there more gentle and more rough rockets? And do other factors, like vibrations, differ significantly too? Some scientific payloads ...
LocalFluff's user avatar
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1 vote
1 answer

Estimating vibration performance of a material

I am choosing a material for a spacecraft component, and I would like to estimate how it will perform under vibration, perhaps during launch. How does one estimate this performance? Are there ...
user3.14159265359's user avatar
4 votes
2 answers

Is vibration useful in shaking off Mars dust?

I had just read this article about how they were trying to figure out how to make a vibrating superconductor move in 1 direction, for propulsion, but it didn't sound too promising. So I thought of ...
Space Librarian's user avatar
15 votes
2 answers

How were vibrations supposed to be handled in an Ares I?

The basic concept of an Ares 1 consisted of a five-segment SRB and some liquid-fuelled upper stage. The SRB was derived from the four-segment Space Shuttle SRBs. A similar concept was later promoted ...
s-m-e's user avatar
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