ENH: Enable only radial burning

[caioessouza]

Pull request type

• [X] Code changes (bugfix, features)

Checklist

• [ ] Lint (black rocketpy/ tests/) has passed locally
• [ ] All tests (pytest tests -m slow --runslow) have passed locally
• [x] CHANGELOG.md has been updated (if relevant)

Current behavior

Rocketpy SolidMotor class simulates the grain regression either radially and axially by default.

This PR is related to the following issue: ENH: Enable only radial burning #801

New behavior

Now it's possible to the user to change from the default behavior to a only radial regression by setting the new "only_radial_burning" optional parameter as True in the SolidMotor class.

Breaking change

• [x] No

Additional information

Here is an example of the comparison between the default burning and the only radial one applied to the getting_started.ipynb simulation. The pytest tests haven't passed locally because of a windows problem.

[codecov[bot]]

Codecov Report

:x: Patch coverage is 45.83333% with 13 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 80.24%. Comparing base (9cf3dd4) to head (ef661c4). :warning: Report is 5 commits behind head on develop.

Files with missing lines	Patch %	Lines
rocketpy/motors/solid_motor.py	45.83%	13 Missing :warning:

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #815      +/-   ##
===========================================
- Coverage    80.27%   80.24%   -0.04%     
===========================================
  Files          104      104              
  Lines        12769    12829      +60     
===========================================
+ Hits         10250    10294      +44     
- Misses        2519     2535      +16     

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[Gui-FernandesBR]

Are we missing something in the HybridMotor class here? If we want to define a a HybridMotor with only radial burning garin how would we do that currently?

I recommend modifyng the hybrid class in another PR, it's easier to reivew it.

[Gui-FernandesBR]

But if you really want to include hybrid motors here, not a problem

[Gui-FernandesBR]

@phmbressan I will wait for your re-review before reviewing this one. I think you have more critical comments than me.

I would like to release this one soon.