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Results tagged with terminology
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user 12102
Questions regarding words and abbreviations used in the fields of spaceflight and space exploration, and their meaning when used in those contexts.
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What is SpaceX's "rocket canister"?
The CNBC News item SpaceX, Boeing design risks threaten new delays for US space program says:
Just ahead of the first scheduled un-manned test flight slated for March 2 under NASA's multibillion-doll …
- 151k
2
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2
answers
151
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Can we compare high microgravity to low microgravity? Can we say "what it's like to be in a ...
In this answer to What do ISS astronauts do while the ISS gets reboosted? I wrote
They strap everything down first, then make videos about what it's like to be in a significant amount of microgravity …
- 151k
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3
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Can "space weather" refer to deep space environments or only to Earth's (or another planet's...
@OscarLanzi's interesting answer and my comment there led me to read Wikipedia's article Space weather.
The article exclusively seems to only talk about effects in Earth's upper atmosphere; the only …
- 151k
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What is and what isn't ullage in rocket science?
This comment and others below this answer address ullage.
"Ullage" basically just means "the portion of the tank that isn't filled with liquid". The extended rocket-science implications of ullage …
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3
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3
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Orbital vocabulary confusion! How can the tangential velocity of an elliptical Kepler orbit ...
I'm now officially confused about the usage of "tangential" when breaking down orbital velocity components. It started with edits and comments on this answer to Orbital speed is (vector) sum of tangen …
- 151k
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1
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253
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Has every passenger been an astronaut? Will they be in the future?
There have been a number of paying passengers on orbital missions in the past, and it is likely there will be many, many more in the future, and not only on orbital missions.
I'm thinking that passen …
- 151k
4
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1
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634
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Which Falcon-9 launches were of a Falcon-9R rocket?
I have heard about Falcon 9 1.1 and Falcon 9 FT, but what is a Falcon 9R?
If I understand correctly R = "reusable" which seems to apply to a lot of them.
Are the Falcon 9 FT rockets launched today als …
- 151k
0
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4
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203
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Is GEO redundant (Geo- and Earth)? Would we call a Lunasychronous Lunar orbit LLO?
I think the title of the question Is it possible to establish a synchronous lunar orbit without using Lagrange points? is absolutely clear; it's an orbit around the Moon that is synchronous to the rot …
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1
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407
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What do you call the Apollo LEM plus CM (Command Module) when they are connected?
In the question How far away can spacecraft be seen with an optical telescope? I used
...Apollo 14 CM & LEM and the Saturn IV B..."
for lack of better words. Unlike some people I (don't) have …
- 151k
3
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3
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What's the planetary exploration word for "impact parameter" (distance of closest approach i...
In particle scattering there's a term called "impact parameter", which is the minimum distance a particle would pass a second particle at rest, if the attractive or repulsive force were ignored or "tu …
- 151k
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Can "engine" and "motor" be used interchangeably in spaceflight? Are there any cases where t...
Typing "rocket motor" into google returns a page full of links mostly about rocket engines. It seems that The Google has AI-synonymized them.
Question: Can "engine" and "motor" be used interchangeably …
- 151k
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1
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What is "trade space" in the context of libration orbit mission design? (used in trade analy...
The introduction to Launch Window Trade Analysis for the James Webb Space Telescope reads:
The James Webb Space Telescope (JWST) is a large-scale space telescope mission designed to study fundamental …
- 151k
5
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3
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879
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Are there terms for Earth orbits with rational number multiples of 1 sidereal day?
An Earth orbit with a period of 1 sidereal day (and zero inclination) is a geosynchronous orbit, orbits slightly above and below that are supersynchronous and subsynchronous orbits, and a Molniya orbi …
- 151k
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What does “supersonic large amplitude ID maneuver PTI” mean, and what does a tumble motor do?
In this question I linked to a YouTube video of the Ares X-1 launch. You can start listening at 02:00 for the point where these are mentioned:
"Supersonic large amplitude ID maneuver PTI" and "a t …
- 151k
2
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1
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Connection between Vanguard spacecraft, Vanguard rocket, and Project Vanguard?
I think I created the vanguard tag for Why would low pump inlet pressure result in such a spectacular explosion? (Vanguard TV3) and now I'm not sure of the connection between the Vanguard spacecraft, …
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