Top new questions this week:
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In reporting about the unsuccessful green run of the SLS core stage, Ars Technica mentions
About 50 seconds into what was supposed to be an 8-minute test firing, the flight control center called out, ...
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A news article
reports that
OSIRIS-REx was equipped with two lasers for the spacecraft
to shoot off the rock and study the echo to facilitate
its landing and sampling maneuver. ...
Most lasers don't ...
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Why are we still not going farther than to Low Earth Orbit? Orbital velocity is about 4.8 mi/s (7.7 km/s) and escape velocity is about 7 mi/s (11.2 km/s), about 45% faster. Why is it so hard to reach ...
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The SLS core to be used for the Artemis 1 flight will use four RS-25 engines. These reusable engines were used on the Space Shuttle Orbiter previously.
Is there a listing of which SSMEs are planned ...
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Are the rockets launched from submarines in a horizontal or vertical position?
I mean for the space launches like Volna and Shtil.
This article says
By reaching orbit, LauncherOne has become the first ...
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Are submarine launches horizontal? is a general question and specifies by name two large ICBMs which are likely to need to be launched vertically.
Since the large naval submarines usually come ready-...
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I have 2 questions about the cost of liquid rocket fuel to launch (anything) to LEO orbit. Let's assume we use fuels used in commercial spaceflight today (probably LOX+LH2 or LOX+RP-1 etc.).
What is ...
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Greatest hits from previous weeks:
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Is there any other type of nozzle other than common convergent-divergent nozzle (see picture below) which is used in many rockets?
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Usually simply abbreviated as a RUD, and also sometimes expanded as Rapid Unplanned Disassembly, and being a way of understating that a rocket exploded.
I saw it attributed recently to Elon Musk, ...
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Presumably, the booster would be a very light, very tall tube (Most of the fuel spent) standing on 4 fairly small legs on a ship in the middle of the ocean. It would also still contain some LOX and ...
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There was news of the new SpaceX space suit in Reddit and now a mention in Elon Musk's Instagram where he says:
First picture of SpaceX spacesuit. More in days to follow. Worth noting that this ...
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According to a recent news article a group of USC students are attempting to launch a rocket "in to space" with a planned height of 62 miles. Making them "the first group of students to successfully ...
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Currently I am 13 years old and the thought of space amazes me. I am 5 feet 7 inches (1.7 m) tall. I researched how tall you had to be to be an astronaut. Sites agreed and disagreed, throwing out a ...
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February 6th 2018 saw the first test launch of SpaceX's Falcon 9 Heavy rocket.
During the main core's landing on the marine landing pad, the connection was lost. As such it is not immediately clear ...
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Can you answer these questions?
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I looked at very simple max q formula: q=1/2 ρv^2 (https://en.wikipedia.org/wiki/Max_q). As air density is lower with altitude, the max q should be lower as well, and also should occur at higher ...
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For example RS-68 engine
If you make a test fire of an ablative nozzle engine then the fire will consume the coating of that nozzle.
That means you have to replace the coating or the entire nozzle.
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Do they control for angle of attack on the return flight of stage 1 of Falcon 9?
Once it reenters thick atmosphere, aerodynamic stresses would be a concern as during launch, maybe more so because you ...
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