Takeoff in mission file

[christophe-david]

This PR allow to use takeoff segments in mission file.

The main changes are:

• Update of mission file schema.
• Modification of the code for interpreting polar definitions in mission segment. A dedicated PolarStructureBuilder class has been created, that can parse definition of polar modifiers.

Among minor changes, there are:

• TakeOffSequence has been completed with needed parameters (rotation_rate and rotation_alpha_limit).
• Suppression of the alpha parameter in GroundSpeedChangeSegment, that was supposed to provide the angle of attack at starting point. This information should come from the provided starting point. Therefore, alpha value in FlightPoint is now 0.0 by default, and the default behavior in AbstractTimeStepFlightSegment is that the next computed flight point has same alpha as the previous one.

Note: the strong dependency of the TakeOffSequence parameters to the ones of aggregated segments could make future evolutions more complicated. This will be addressed in next PR.

[codecov[bot]]

Codecov Report

Merging #487 (2714904) into master (16c4c95) will decrease coverage by 0.02%. The diff coverage is 84.61%.

@@            Coverage Diff             @@
##           master     #487      +/-   ##
==========================================
- Coverage   84.27%   84.25%   -0.02%     
==========================================
  Files         128      128              
  Lines        5946     5971      +25     
  Branches      874      880       +6     
==========================================
+ Hits         5011     5031      +20     
- Misses        781      784       +3     
- Partials      154      156       +2     

Impacted Files	Coverage Δ
...on/mission_definition/mission_builder/constants.py	100.00% <ø> (ø)
src/fastoad/models/performances/mission/polar.py	94.11% <0.00%> (ø)
...rformances/mission/segments/ground_speed_change.py	77.77% <ø> (-3.18%)	:arrow_down:
src/fastoad/models/performances/mission/base.py	90.74% <60.00%> (-3.26%)	:arrow_down:
...n_definition/mission_builder/structure_builders.py	91.35% <78.94%> (-2.76%)	:arrow_down:
...stoad/models/performances/mission/segments/base.py	91.98% <83.33%> (+0.09%)	:arrow_up:
src/fastoad/model_base/flight_point.py	93.18% <100.00%> (ø)
...sion_definition/mission_builder/mission_builder.py	88.75% <100.00%> (+0.54%)	:arrow_up:
...toad/models/performances/mission/polar_modifier.py	100.00% <100.00%> (ø)
...rmances/mission/segments/takeoff/end_of_takeoff.py	96.22% <100.00%> (-0.21%)	:arrow_down:
... and 3 more

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