Source code for RCAIDE.Library.Mission.Common.Pre_Process.mass_properties
# RCAIDE/Library/Missions/Common/Pre_Process/mass_properties.py
#
#
# Created: Mar 2025, M. Clarke
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# RCAIDE
# ----------------------------------------------------------------------------------------------------------------------
import RCAIDE
from RCAIDE.Library.Methods.Mass_Properties.Moment_of_Inertia import compute_aircraft_moment_of_inertia
from RCAIDE.Library.Methods.Mass_Properties.Center_of_Gravity import compute_vehicle_center_of_gravity
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# mass_properties
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[docs]
def mass_properties(mission):
""" Performances mass property analysis
"""
last_tag = None
for segment in mission.segments:
if segment.analyses.weights != None:
if last_tag == None:
# run weights analysis
weights_analysis = segment.analyses.weights
_ = weights_analysis.evaluate()
# CG Location
CG_location, _ = compute_vehicle_center_of_gravity(weights_analysis.vehicle, update_CG= weights_analysis.settings.update_center_of_gravity)
# Operating Aircraft MOI
_, _ = compute_aircraft_moment_of_inertia(weights_analysis.vehicle, CG_location, update_MOI= weights_analysis.settings.update_moment_of_inertia)
# assign mass properties to aerodynamics analyses
segment.analyses.aerodynamics.vehicle.mass_properties.operating_empty = weights_analysis.vehicle.mass_properties.operating_empty
segment.analyses.aerodynamics.vehicle.mass_properties.center_of_gravity = weights_analysis.vehicle.mass_properties.center_of_gravity
segment.analyses.aerodynamics.vehicle.mass_properties.moments_of_inertia.tensor = weights_analysis.vehicle.mass_properties.moments_of_inertia.tensor
segment.analyses.energy.vehicle.mass_properties.operating_empty = weights_analysis.vehicle.mass_properties.operating_empty
segment.analyses.energy.vehicle.mass_properties.center_of_gravity = weights_analysis.vehicle.mass_properties.center_of_gravity
segment.analyses.energy.vehicle.mass_properties.moments_of_inertia.tensor = weights_analysis.vehicle.mass_properties.moments_of_inertia.tensor
last_tag = segment.tag.lower()
else:
segment.analyses.aerodynamics.vehicle.mass_properties.operating_empty = mission.segments[last_tag].analyses.weights.vehicle.mass_properties.operating_empty
segment.analyses.aerodynamics.vehicle.mass_properties.center_of_gravity = mission.segments[last_tag].analyses.weights.vehicle.mass_properties.center_of_gravity
segment.analyses.aerodynamics.vehicle.mass_properties.moments_of_inertia.tensor = mission.segments[last_tag].analyses.weights.vehicle.mass_properties.moments_of_inertia.tensor
segment.analyses.weights.vehicle.mass_properties.operating_empty = mission.segments[last_tag].analyses.weights.vehicle.mass_properties.operating_empty
segment.analyses.weights.vehicle.mass_properties.center_of_gravity = mission.segments[last_tag].analyses.weights.vehicle.mass_properties.center_of_gravity
segment.analyses.weights.vehicle.mass_properties.moments_of_inertia.tensor = mission.segments[last_tag].analyses.weights.vehicle.mass_properties.moments_of_inertia.tensor
segment.analyses.energy.vehicle.mass_properties.operating_empty = mission.segments[last_tag].analyses.weights.vehicle.mass_properties.operating_empty
segment.analyses.energy.vehicle.mass_properties.center_of_gravity = mission.segments[last_tag].analyses.weights.vehicle.mass_properties.center_of_gravity
segment.analyses.energy.vehicle.mass_properties.moments_of_inertia.tensor = mission.segments[last_tag].analyses.weights.vehicle.mass_properties.moments_of_inertia.tensor
return
