The rocket tag has no wiki summary.
6
votes
1answer
74 views
How much Bicarbonate of Soda and Vinegar would I need to reach space?
So here is my problem - as part of my job I present some science demonstrations to children and one of the tricks I regularly use is the bicarb/acetic acid rocket. I thought the other day that a ...
-4
votes
1answer
83 views
How fast will I get if I burn a comet? [closed]
Assuming I have a spacecraft which is $30,000\,\mathrm{kg}$ (roughly the size of the Apollo spacecraft).
If I take a comet and (theoretically) electrolize it perfectly to hydrogen and oxygen. I know ...
0
votes
0answers
48 views
Drone targeting [closed]
Imagine a drone and a target point on a 2d plane. There are eight parameters:
...
1
vote
1answer
67 views
Is a purely vertical or almost vertical orbital launch possible?
Is it possible, for the sake of argument, to launch a payload into an orbit around the earth by putting almost all the energy going at a 90 degree angle? What velocity would it take, and what ...
3
votes
2answers
76 views
What causes acceleration of particles in the expansion section of a De Laval nozzle?
A De Laval nozzle has a compression section, where the propellant is compressed (and thereby accelerated) as it moves towards a narrow section (the throat). After the throat, the nozzle widens out ...
1
vote
2answers
121 views
Can Outer Space be used for Waste Disposal?
If harmful toxic, nuclear and other wastes are dangerous if improperly disposed on Earth, can't they be launched into space? If a large, tightly bound mass of waste were to be propelled into outer ...
-3
votes
3answers
60 views
Speed of an object in air versus in vacuum
Okay, imagine that you are shooting a rocket down a tunnel that is 60 miles long and the rocket is travelling at 60mph, so the rocket should reach the end of the tunnel in a hour, right? Yep, in an ...
1
vote
1answer
85 views
At what launch angle will a (model) rocket keep flying straight?
When a model rocket is launched straight up with an angle of 90degrees to the ground it will do a 180 flip when it reaches the apex of its flight and then dive straight down to Earth.
If I were to ...
2
votes
1answer
99 views
Sideways motion between a vertical launch from a planet and landing [duplicate]
I saw a video some days ago (Hello Kitty in Space) of a schoolgirl successfully launching a balloon into space which later popped and landed ~47 km from launch site.
If I vertically launch an object ...
1
vote
2answers
100 views
Will a rotating object traveling along a linear path continue to rotate forever in space?
Suppose engineers built a cylinder-shaped space ship which rotates to create artificial gravity:
...
1
vote
3answers
128 views
Dynamics of a Rocket
I am interested in modelling the trajectory of a rocket from the Earth to the Moon by solving a differential equation numerically. Below are some key facts and assumptions I am using. I want to make ...
0
votes
2answers
203 views
What alternative shapes may a rocket heading into orbit have?
It looks like most rockets that head out of Earth, or even into orbit are pencil shaped (or nearly so). I would take this to mean there is some mass of air such vehicles push out of their way.
What ...
1
vote
3answers
106 views
Do spacecraft engines suffer from carbon accumulation the way typical petrol/kerosene engines do?
Just wondering whether the spacecraft engines/drives, or their booster rockets accumulate carbon the way car/truck engines do. What about ion/methane drives?
1
vote
1answer
68 views
Why is there no oxidizer in space?
Just as a thought experiment.
One factor in the economies of space exploration is that of fuel. This may be split as
MSL - Earth Orbit
Earth Orbit to Inner Solar System
Beyond.
In each of ...
3
votes
3answers
235 views
Conservation of Energy in Different Frames of Reference
Say I have a bucket of fuel that can produce 150J of energy by combustion. No matter what frame of reference an observer or the bucket of fuel is in, since the configuration of molecules stay the ...
