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Results tagged with rockets
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user 6605
Questions regarding the boosters or thrusters used to propel man-made objects. For rockets firing opposite the primaries, see [retrorockets]. See wiki for other related tags.
5
votes
1
answer
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What is the flyaway cost of a Soyuz and Proton Rocket?
Can anyone help us find reliable estimates for flyaway costs for these 2 rockets? …
- 4,606
18
votes
2
answers
2k
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How big a weight problem is ice sticking to a rocket?
Cryo tanks are so cold, they tend to condense moisture out of the air, creating ice covering a lot of the rocket.
I've seen many videos where this ice starts shedding at launch, but I still have to a …
- 4,606
6
votes
3
answers
3k
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Are cold gas thrusters viable for model rockets?
Lately I've been exploring the idea of cold gas thrusters, or in this case cold gas rocket engines, to be used in model rockets. … That would be pretty darn good as far as model rockets go. (However, those were for vacuum performances and idk what they might be at sea level.) …
- 4,606
7
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2
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Which is overall more expensive to operate for a final rocket stage? LH2/LOX or hypergolics ...
My question is about operating costs of propellants, from production, handling, fueling, and anything else needed for the props. I am not just asking about how expensive it is to produce them. Operati …
- 4,606
6
votes
2
answers
6k
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What does "self-pressurizing" mean in regards to propellant tanks?
I've come across this term a few times. IIRC, liquid hydrogen is "self-pressurizing", but other fuels are not. Apparently, if a propellant is self-pressurizing, we do not need to build any complex plu …
- 4,606
14
votes
1
answer
3k
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What solid fuel was used in the Katyushas rocket artillery of WW2?
They were trucks with rails firing a bunch of small rockets with a range of 3 to 12 km. … These were solid-fuel rockets, but I would like to know what exact rocket fuel they used, because it relates to a few of my other questions:
Why was the V2 not a solid rocket? …
- 4,606
6
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Is this a correct understanding of Tsiolkovsky's rocket equation?
That's just how chemical rockets work. They burn mass and thus lose mass. You always start with more fuel than you end with. … Fair warning though, if you type in a typical number that real-world rockets use, such as 3,000 (m/s), you will have to zoom way, way out in order to see the curve. …
- 4,606
3
votes
Russian manned Moon landing capability today
To be technical, your title and inline questions are different.
Do Russians have means of launching a manned mission to the Moon? Do they have an engine with sufficient thrust and stability needed (R …
- 4,606
7
votes
1
answer
2k
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What exactly does it mean to human-rate a rocket? As opposed to the escape system?
It has powerful solid rockets that basically act as an "ejection seat" for the entire crew capsule. …
- 4,606
7
votes
1
answer
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What was the first large rocket to use APCP solid fuel?
If I'm not mistaken, early solid rockets used something other than APCP, and really really early solid rockets used black powder.
So what was the first large rocket to use APCP in a stage? …
- 4,606
10
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3
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A cryo tank within another cryo tank...is it a sound engineering concept?
Here's the idea: A large spherical LH2 tank is placed inside a spherical LOX tank.
The reason I thought of this is so the inner tank doesn't need to be insulated. It doesn't need to be a double-walle …
- 4,606