Demonstration 1: Capturing an OpenMDAO Assembly, editing it, and executing the modified assembly
Part 1: Capturing the OpenMDAO Assembly
This is the first of three Jupyter Notebooks that show an example of the workflow pictured below:
In this notebook engineer 1 is creating an OpenMDAO assembly that covers multiple use cases. In this example we are using the PrepGeom group from Aviary.
Note: Thanks to Ken Moore from NASA for providing the code to set this example up.
import openmdao.api as om
from aviary.subsystems.geometry.flops_based.prep_geom import PrepGeom
from aviary.utils.aviary_values import AviaryValues
from aviary.validation_cases.validation_tests import get_flops_data
from aviary.variable_info.functions import override_aviary_vars
from aviary.variable_info.variables import Aircraft
from aviary.validation_cases.validation_data.flops_data.FLOPS_Test_Data import \
FLOPS_Test_Data
from aviary.variable_info.variables import Aircraft
from standard_evaluator import save_assembly
from aviary.subsystems.geometry.flops_based.prep_geom import PrepGeom
---------------------------------------------------------------------------
ModuleNotFoundError Traceback (most recent call last)
Cell In[1], line 10
6
7 from aviary.variable_info.functions import override_aviary_vars
8 from aviary.variable_info.variables import Aircraft
9
---> 10 from aviary.validation_cases.validation_data.flops_data.FLOPS_Test_Data import \
11 FLOPS_Test_Data
12 from aviary.variable_info.variables import Aircraft
13 from standard_evaluator import save_assembly
ModuleNotFoundError: No module named 'aviary.validation_cases.validation_data.flops_data'
class PreMission(om.Group):
def initialize(self):
self.options.declare(
'aviary_options', types=AviaryValues,
desc='collection of Aircraft/Mission specific options')
def setup(self):
self.add_subsystem('prep_geom', PrepGeom(),
promotes=['*'])
def configure(self):
aviary_options = self.options['aviary_options']
override_aviary_vars(self, aviary_options)
case_name = 'LargeSingleAisle1FLOPS'
keys = [
Aircraft.Fuselage.NUM_FUSELAGES,
Aircraft.Propulsion.TOTAL_NUM_FUSELAGE_ENGINES,
Aircraft.VerticalTail.NUM_TAILS,
Aircraft.Wing.SPAN_EFFICIENCY_REDUCTION,
Aircraft.Engine.NUM_ENGINES,
Aircraft.Propulsion.TOTAL_NUM_ENGINES,
]
options = get_flops_data(case_name, preprocess=True, keys=keys)
model_options = {}
for key in keys:
model_options[key] = options.get_item(key)[0]
prob = om.Problem(PreMission(aviary_options=options))
# Joerg, this is the Model Options feature, that lets us set component options at the top, so that OpenMDAO will
# propagate them to all the components.
prob.model_options['*'] = model_options
prob.setup(force_alloc_complex=True)
flops_data = FLOPS_Test_Data[case_name]
flops_inputs = flops_data['inputs']
flops_outputs = flops_data['outputs']
input_keys = [
Aircraft.Fuselage.LENGTH,
Aircraft.Fuselage.MAX_HEIGHT,
Aircraft.Fuselage.MAX_WIDTH,
Aircraft.Fuselage.WETTED_AREA_SCALER,
Aircraft.HorizontalTail.AREA,
Aircraft.HorizontalTail.ASPECT_RATIO,
Aircraft.HorizontalTail.TAPER_RATIO,
Aircraft.HorizontalTail.THICKNESS_TO_CHORD,
Aircraft.HorizontalTail.VERTICAL_TAIL_FRACTION,
Aircraft.HorizontalTail.WETTED_AREA_SCALER,
Aircraft.Nacelle.AVG_DIAMETER,
Aircraft.Nacelle.AVG_LENGTH,
Aircraft.VerticalTail.AREA,
Aircraft.VerticalTail.ASPECT_RATIO,
Aircraft.VerticalTail.TAPER_RATIO,
Aircraft.VerticalTail.THICKNESS_TO_CHORD,
Aircraft.VerticalTail.WETTED_AREA_SCALER,
Aircraft.Wing.AREA,
Aircraft.Wing.ASPECT_RATIO,
Aircraft.Wing.GLOVE_AND_BAT,
Aircraft.Wing.SPAN,
Aircraft.Wing.TAPER_RATIO,
Aircraft.Wing.THICKNESS_TO_CHORD,
Aircraft.Wing.WETTED_AREA_SCALER,
]
for key in input_keys:
if key in flops_inputs:
data = flops_inputs
else:
data = flops_outputs
desired, units = data.get_item(key)
prob.set_val(key, desired, units)
prob.run_model()
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.canard' <class Canard>: input variable 'aircraft:canard:area', promoted using 'aircraft:canard:area', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.canard' <class Canard>: input variable 'aircraft:canard:thickness_to_chord', promoted using 'aircraft:canard:thickness_to_chord', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.canard' <class Canard>: input variable 'aircraft:canard:wetted_area_scaler', promoted using 'aircraft:canard:wetted_area_scaler', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.characteristic_lengths' <class CharacteristicLengths>: input variable 'aircraft:canard:area', promoted using 'aircraft:canard:area', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.characteristic_lengths' <class CharacteristicLengths>: input variable 'aircraft:canard:aspect_ratio', promoted using 'aircraft:canard:aspect_ratio', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.characteristic_lengths' <class CharacteristicLengths>: input variable 'aircraft:canard:thickness_to_chord', promoted using 'aircraft:canard:thickness_to_chord', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.characteristic_lengths' <class CharacteristicLengths>: input variable 'aircraft:fuselage:avg_diameter', promoted using 'aircraft:fuselage:avg_diameter', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.characteristic_lengths' <class CharacteristicLengths>: input variable 'aircraft:fuselage:length', promoted using 'aircraft:fuselage:length', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.characteristic_lengths' <class CharacteristicLengths>: input variable 'aircraft:horizontal_tail:area', promoted using 'aircraft:horizontal_tail:area', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.characteristic_lengths' <class CharacteristicLengths>: input variable 'aircraft:horizontal_tail:aspect_ratio', promoted using 'aircraft:horizontal_tail:aspect_ratio', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.characteristic_lengths' <class CharacteristicLengths>: input variable 'aircraft:horizontal_tail:thickness_to_chord', promoted using 'aircraft:horizontal_tail:thickness_to_chord', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.characteristic_lengths' <class CharacteristicLengths>: input variable 'aircraft:nacelle:avg_diameter', promoted using 'aircraft:nacelle:avg_diameter', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.characteristic_lengths' <class CharacteristicLengths>: input variable 'aircraft:nacelle:avg_length', promoted using 'aircraft:nacelle:avg_length', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.characteristic_lengths' <class CharacteristicLengths>: input variable 'aircraft:vertical_tail:area', promoted using 'aircraft:vertical_tail:area', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.characteristic_lengths' <class CharacteristicLengths>: input variable 'aircraft:vertical_tail:aspect_ratio', promoted using 'aircraft:vertical_tail:aspect_ratio', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.characteristic_lengths' <class CharacteristicLengths>: input variable 'aircraft:vertical_tail:thickness_to_chord', promoted using 'aircraft:vertical_tail:thickness_to_chord', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.characteristic_lengths' <class CharacteristicLengths>: input variable 'aircraft:wing:area', promoted using 'aircraft:wing:area', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.characteristic_lengths' <class CharacteristicLengths>: input variable 'aircraft:wing:aspect_ratio', promoted using 'aircraft:wing:aspect_ratio', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.characteristic_lengths' <class CharacteristicLengths>: input variable 'aircraft:wing:glove_and_bat', promoted using 'aircraft:wing:glove_and_bat', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.characteristic_lengths' <class CharacteristicLengths>: input variable 'aircraft:wing:taper_ratio', promoted using 'aircraft:wing:taper_ratio', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.characteristic_lengths' <class CharacteristicLengths>: input variable 'aircraft:wing:thickness_to_chord', promoted using 'aircraft:wing:thickness_to_chord', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.fuselage' <class _Fuselage>: input variable 'aircraft:fuselage:avg_diameter', promoted using 'aircraft:fuselage:avg_diameter', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.fuselage' <class _Fuselage>: input variable 'aircraft:fuselage:length', promoted using 'aircraft:fuselage:length', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.fuselage' <class _Fuselage>: input variable 'aircraft:fuselage:wetted_area_scaler', promoted using 'aircraft:fuselage:wetted_area_scaler', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.fuselage' <class _Fuselage>: input variable 'aircraft:horizontal_tail:thickness_to_chord', promoted using 'aircraft:horizontal_tail:thickness_to_chord', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.fuselage' <class _Fuselage>: input variable 'aircraft:horizontal_tail:vertical_tail_fraction', promoted using 'aircraft:horizontal_tail:vertical_tail_fraction', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.fuselage' <class _Fuselage>: input variable 'aircraft:vertical_tail:thickness_to_chord', promoted using 'aircraft:vertical_tail:thickness_to_chord', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.fuselage' <class _Fuselage>: input variable 'aircraft:wing:area', promoted using 'aircraft:wing:area', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.fuselage' <class _Fuselage>: input variable 'aircraft:wing:aspect_ratio', promoted using 'aircraft:wing:aspect_ratio', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.fuselage' <class _Fuselage>: input variable 'aircraft:wing:glove_and_bat', promoted using 'aircraft:wing:glove_and_bat', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.fuselage' <class _Fuselage>: input variable 'aircraft:wing:thickness_to_chord', promoted using 'aircraft:wing:thickness_to_chord', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.nacelles' <class Nacelles>: input variable 'aircraft:nacelle:avg_diameter', promoted using 'aircraft:nacelle:avg_diameter', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.nacelles' <class Nacelles>: input variable 'aircraft:nacelle:avg_length', promoted using 'aircraft:nacelle:avg_length', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.nacelles' <class Nacelles>: input variable 'aircraft:nacelle:wetted_area_scaler', promoted using 'aircraft:nacelle:wetted_area_scaler', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.tail' <class _Tail>: input variable 'aircraft:horizontal_tail:area', promoted using 'aircraft:horizontal_tail:area', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.tail' <class _Tail>: input variable 'aircraft:horizontal_tail:vertical_tail_fraction', promoted using 'aircraft:horizontal_tail:vertical_tail_fraction', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.tail' <class _Tail>: input variable 'aircraft:horizontal_tail:wetted_area_scaler', promoted using 'aircraft:horizontal_tail:wetted_area_scaler', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.tail' <class _Tail>: input variable 'aircraft:vertical_tail:area', promoted using 'aircraft:vertical_tail:area', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.tail' <class _Tail>: input variable 'aircraft:vertical_tail:wetted_area_scaler', promoted using 'aircraft:vertical_tail:wetted_area_scaler', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.wing' <class _Wing>: input variable 'aircraft:wing:area', promoted using 'aircraft:wing:area', was already promoted using 'aircraft*'.
C:\Users\tf715b\Desktop\standard-evaluator\venv\Lib\site-packages\openmdao\core\system.py:2697: PromotionWarning:'prep_geom.wing' <class _Wing>: input variable 'aircraft:wing:wetted_area_scaler', promoted using 'aircraft:wing:wetted_area_scaler', was already promoted using 'aircraft*'.
Now that we have the OpenMDAO assembly we can show the values of it’s inputs. This will be useful to compare with in the other parts of the demo.
_ = prob.model.list_inputs(shape=True)
78 Input(s) in 'model'
varname val shape prom_name
--------------------------------------------------- --------------- ----- -----------------------------------------------
prep_geom
fuselage_prelim
aircraft:fuselage:length [128.] (1,) aircraft:fuselage:length
aircraft:fuselage:max_height [13.17] (1,) aircraft:fuselage:max_height
aircraft:fuselage:max_width [12.33] (1,) aircraft:fuselage:max_width
wing_prelim
aircraft:wing:area [1370.] (1,) aircraft:wing:area
aircraft:wing:glove_and_bat [134.] (1,) aircraft:wing:glove_and_bat
aircraft:wing:span [117.83] (1,) aircraft:wing:span
prelim
aircraft:fuselage:avg_diameter [12.75] (1,) aircraft:fuselage:avg_diameter
aircraft:fuselage:max_width [12.33] (1,) aircraft:fuselage:max_width
aircraft:horizontal_tail:area [355.] (1,) aircraft:horizontal_tail:area
aircraft:horizontal_tail:aspect_ratio [6.] (1,) aircraft:horizontal_tail:aspect_ratio
aircraft:horizontal_tail:taper_ratio [0.22] (1,) aircraft:horizontal_tail:taper_ratio
aircraft:horizontal_tail:thickness_to_chord [0.125] (1,) aircraft:horizontal_tail:thickness_to_chord
aircraft:vertical_tail:area [284.] (1,) aircraft:vertical_tail:area
aircraft:vertical_tail:aspect_ratio [1.75] (1,) aircraft:vertical_tail:aspect_ratio
aircraft:vertical_tail:taper_ratio [0.33] (1,) aircraft:vertical_tail:taper_ratio
aircraft:vertical_tail:thickness_to_chord [0.1195] (1,) aircraft:vertical_tail:thickness_to_chord
aircraft:wing:area [1370.] (1,) aircraft:wing:area
aircraft:wing:glove_and_bat [134.] (1,) aircraft:wing:glove_and_bat
aircraft:wing:span [117.83] (1,) aircraft:wing:span
aircraft:wing:taper_ratio [0.278] (1,) aircraft:wing:taper_ratio
aircraft:wing:thickness_to_chord [0.13] (1,) aircraft:wing:thickness_to_chord
wing
prep_geom:_Names:CROOT [16.415788] (1,) wing.prep_geom:_Names:CROOT
prep_geom:_Names:CROOTB [15.13330021] (1,) wing.prep_geom:_Names:CROOTB
prep_geom:_Names:XDX [12.75] (1,) wing.prep_geom:_Names:XDX
prep_geom:_Names:XMULT [2.05031] (1,) wing.prep_geom:_Names:XMULT
aircraft:wing:area [1370.] (1,) aircraft:wing:area
aircraft:wing:wetted_area_scaler [1.] (1,) aircraft:wing:wetted_area_scaler
tail
prep_geom:_Names:XMULTH [2.048375] (1,) tail.prep_geom:_Names:XMULTH
prep_geom:_Names:XMULTV [2.0462465] (1,) tail.prep_geom:_Names:XMULTV
aircraft:horizontal_tail:area [355.] (1,) aircraft:horizontal_tail:area
aircraft:horizontal_tail:vertical_tail_fraction [0.] (1,) aircraft:horizontal_tail:vertical_tail_fraction
aircraft:horizontal_tail:wetted_area_scaler [1.] (1,) aircraft:horizontal_tail:wetted_area_scaler
aircraft:vertical_tail:area [284.] (1,) aircraft:vertical_tail:area
aircraft:vertical_tail:wetted_area_scaler [1.] (1,) aircraft:vertical_tail:wetted_area_scaler
fuselage
prep_geom:_Names:CROOTB [15.13330021] (1,) fuselage.prep_geom:_Names:CROOTB
prep_geom:_Names:CROTVT [19.15660306] (1,) fuselage.prep_geom:_Names:CROTVT
prep_geom:_Names:CRTHTB [13.50207305] (1,) fuselage.prep_geom:_Names:CRTHTB
aircraft:fuselage:avg_diameter [12.75] (1,) aircraft:fuselage:avg_diameter
aircraft:fuselage:length [128.] (1,) aircraft:fuselage:length
aircraft:fuselage:wetted_area_scaler [1.] (1,) aircraft:fuselage:wetted_area_scaler
aircraft:horizontal_tail:thickness_to_chord [0.125] (1,) aircraft:horizontal_tail:thickness_to_chord
aircraft:horizontal_tail:vertical_tail_fraction [0.] (1,) aircraft:horizontal_tail:vertical_tail_fraction
aircraft:vertical_tail:thickness_to_chord [0.1195] (1,) aircraft:vertical_tail:thickness_to_chord
aircraft:wing:area [1370.] (1,) aircraft:wing:area
aircraft:wing:aspect_ratio [11.232936] (1,) aircraft:wing:aspect_ratio
aircraft:wing:glove_and_bat [134.] (1,) aircraft:wing:glove_and_bat
aircraft:wing:thickness_to_chord [0.13] (1,) aircraft:wing:thickness_to_chord
nacelles
aircraft:nacelle:avg_diameter [7.94] (1,) aircraft:nacelle:avg_diameter
aircraft:nacelle:avg_length [12.3] (1,) aircraft:nacelle:avg_length
aircraft:nacelle:wetted_area_scaler [1.] (1,) aircraft:nacelle:wetted_area_scaler
canard
aircraft:canard:area [0.] (1,) aircraft:canard:area
aircraft:canard:thickness_to_chord [0.] (1,) aircraft:canard:thickness_to_chord
aircraft:canard:wetted_area_scaler [1.] (1,) aircraft:canard:wetted_area_scaler
characteristic_lengths
prep_geom:_Names:CROOT [16.415788] (1,) characteristic_lengths.prep_geom:_Names:CROOT
aircraft:canard:area [0.] (1,) aircraft:canard:area
aircraft:canard:aspect_ratio [0.] (1,) aircraft:canard:aspect_ratio
aircraft:canard:thickness_to_chord [0.] (1,) aircraft:canard:thickness_to_chord
aircraft:fuselage:avg_diameter [12.75] (1,) aircraft:fuselage:avg_diameter
aircraft:fuselage:length [128.] (1,) aircraft:fuselage:length
aircraft:horizontal_tail:area [355.] (1,) aircraft:horizontal_tail:area
aircraft:horizontal_tail:aspect_ratio [6.] (1,) aircraft:horizontal_tail:aspect_ratio
aircraft:horizontal_tail:thickness_to_chord [0.125] (1,) aircraft:horizontal_tail:thickness_to_chord
aircraft:nacelle:avg_diameter [7.94] (1,) aircraft:nacelle:avg_diameter
aircraft:nacelle:avg_length [12.3] (1,) aircraft:nacelle:avg_length
aircraft:vertical_tail:area [284.] (1,) aircraft:vertical_tail:area
aircraft:vertical_tail:aspect_ratio [1.75] (1,) aircraft:vertical_tail:aspect_ratio
aircraft:vertical_tail:thickness_to_chord [0.1195] (1,) aircraft:vertical_tail:thickness_to_chord
aircraft:wing:area [1370.] (1,) aircraft:wing:area
aircraft:wing:aspect_ratio [11.232936] (1,) aircraft:wing:aspect_ratio
aircraft:wing:glove_and_bat [134.] (1,) aircraft:wing:glove_and_bat
aircraft:wing:taper_ratio [0.278] (1,) aircraft:wing:taper_ratio
aircraft:wing:thickness_to_chord [0.13] (1,) aircraft:wing:thickness_to_chord
total_wetted_area
aircraft:canard:wetted_area [0.] (1,) aircraft:canard:wetted_area
aircraft:fuselage:wetted_area [4158.62066062] (1,) aircraft:fuselage:wetted_area
aircraft:horizontal_tail:wetted_area [592.64609688] (1,) aircraft:horizontal_tail:wetted_area
aircraft:nacelle:total_wetted_area [546.9072] (1,) aircraft:nacelle:total_wetted_area
aircraft:vertical_tail:wetted_area [581.134006] (1,) aircraft:vertical_tail:wetted_area
aircraft:wing:wetted_area [2396.55520449] (1,) aircraft:wing:wetted_area
We can also look at the N2 diagram for this model. If we carefully look at this diagram we can see that there are two main components that create outputs from this assembly:
characteristic_lengthstotal_wetted_area
We can also see that two components are only using inputs to the group, and are not depending on the preliminary calculations done in other components in this assembly. The two components only depending on inputs to the group are:
nacellescanard
import os
# Check if running in VS Code
if 'VSCODE_PID' in os.environ:
display_in_notebook = False
else:
display_in_notebook = True
om.n2(prob, 'before_NASA.n2.html', display_in_notebook=display_in_notebook, )
The final step in this part of the workflow we are demonstrating is the engineer storing both the assembly information and the current state of the assembly in a JSON file (demo_group_nasa.json) and a HDF5 file (state.h5).
Note: We use the HDF5 format for storing the state since it is a binary file format which is compact and ensure no loss of accuracy. There are many different viewers and editors available to edit HDF5. A nice viewer is myHDF5.
save_assembly(prob, assembly_name='demo_group_nasa.json', state_name='state.h5')