15
votes
How does the poliastro python package "Going to Mars with Python" example work? What's it really doing?
Full disclaimer: I'm the author and main developer of poliastro.
The most important step before doing anything is somehow retrieving the positions and velocities of the planets of the Solar System. ...
- 1,032
10
votes
Accepted
Multiple revolution Lambert problem
Disclaimer: I'm the author of poliastro
No matter how many revolutions you consider, the Lambert solution gives always two velocities: departure and arrival. You could then consider that you need two ...
- 1,032
6
votes
Accepted
Is it OK to spend 3 tons of fuel for the orbit transfer?
If I'm understanding your problem statement correctly, your maneuver is equivalent to a complete Hohmann transfer from 200km x 200km to 700km x 700km, followed immediately by the first burn (but not ...
- 166k
6
votes
Accepted
A software for orbit propagation, considering Moon, Sun and zonal harmonics
I would highly recommend NASA Goddard's GMAT (General Mission Analysis Tool). It is quite user friendly, has a number of tutorials, and has been used in spacecraft operations.
- 6,190
3
votes
A software for orbit propagation, considering Moon, Sun and zonal harmonics
Full disclaimer: I'm the author and main developer of poliastro.
In poliastro there are several perturbations already defined, and among them you have zonal harmonics, Solar pressure, and the ...
- 1,032
3
votes
Accepted
Lambert method for in-plane transfer
You need to take into account that the Hohmann transfer and the Lambert solution receive different inputs and are therefore not equivalent.
The Hohmann transfer is known to be the optimal two-impulse ...
- 1,032
2
votes
Python orbit simulation using TLE-tools and poliastro
No, you should never attempt to generate your own TLEs. You need to wait until the next one published on space-track.org, because trying to do it on your own is painfully difficult and almost ...
- 7,628
1
vote
Accepted
iod.lambert method does not work in poliastro 0.14.0 and 0.16.3 in Windows 10 (?)
I tried to follow the tutorial and encountered the same error as you. Then I tried debugging and got the value in the desired format as shown in the tutorial. Here's what you should do -
The value ...
- 587
1
vote
Accepted
Calculated Classical Orbital Elements of the ISS seem to differ from the actual ones
(Ok, this is my attempt of answering my own question based on the suggestions in the comments, full credits to @uhoh and @David-Hammen)
The main issue
As pointed out by @uhoh, the main issue here is ...
- 487
1
vote
Lambert method for in-plane transfer
If both orbits are in the same plane, then the optimal solution will be called hohmann transfer where you need to start from perigee of the inner orbit towards an apogee of the outer orbit. So you ...
1
vote
Accepted
Lambert problem solver needed for custom gravity in Python
Summarizing some answers from the poliastro issue:
The Lambert problem is nothing more than the two body boundary value problem under the assumption of Newtonian dynamics and spherical gravity. ...
- 1,032
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