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… the different result of Aircraft.Wing.BENDING_MATERIAL_FACTOR (or BT as returned by subroutine BNDMAT) between Aviary and FLOPS.
cmbenne3
requested changes
Mar 19, 2026
aviary/subsystems/geometry/flops_based/test/test_wing_detailed_bwb.py
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…CKNESS_TO_CHORD_REFERENCE
…ng.ASPECT_RATIO is an output. But remove the check if tcref == 0.0
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Summary
This PR implements another BWB model from FLOPS - BWB300 baseline model.
The BWB300 baseline model implemented here is not exactly the same as the original FLOPS model. This is because Aviary did not implement all the features of FLOPS. More precisely, here are the differences:
Aircraft.Fuselage.MAX_WIDTH = 50.0is not implemented inBWBDetailedCabinLayoutcomponent. Can override later.Aircraft.Fuselage.MAX_HEIGHT = 14.16is not implemented inBWBDetailedCabinLayoutcomponent. Can override later.Aircraft.Wing.ROOT_CHORDwhich is an output fromBWBDetailedCabinLayoutcomponent. Can override later.Mission.Design.GROSS_MASS = 600,000manually. The original logic is DGW = 1, IF(DGW < 5) DG = DGW * GW, but GW is not read in to Aviary. Should we create a new Aviary variable for GW (Ramp weight)?Aircraft.Wing.GLOVE_AND_BATis not implemented. So, take the value from FLOPS run. See subroutine DEFINE().Aircraft.Wing.SPAN = 186.3is incorrect. FLOPS updates value during its run. If we input bothAircraft.Wing.SPANandAircraft.Wing.OUTBOARD_SEMISPAN, they must satisfyAircraft.Wing.SPAN Aircraft.Fuselage.MAX_WIDTH + Aircraft.Wing.OUTBOARD_SEMISPAN*2.Aircraft.Fuselage.HEIGHT_TO_WIDTH_RATIO). Should we add TCSOB (meaning Fuselage thickness/chord ratio at side of body) to Aviary? This will affect the computation ofBWB_THICKNESS_TO_CHORD_DISTRIBUTION[1].Aircraft.VerticalTail.WETTED_AREA = 125, even thoughAircraft.VerticalTail.NUM_TAILS = 0. It is ignored.aircraft:wing:aspect_ratio,5.4252,unitlessin .csv file in order to follow FLOPS computation.Aircraft.HorizontalTail.VERTICAL_TAIL_FRACTION) is not taken care byfortran_to_aviary().Aircraft.VerticalTail.SWEEP) is not taken care byfortran_to_aviary().Aircraft.VerticalTail.ASPECT_RATIO) is not taken care byfortran_to_aviary().Aircraft.VerticalTail.TAPER_RATIO) is not taken care byfortran_to_aviary().Aircraft.Fuel.WING_FUEL_CAPACITY) is not taken care byfortran_to_aviary().Related Issues
Backwards incompatibilities
None
New Dependencies
None