OpenMDAO · jkirk5 · Jan 21, 2026 · Sep 23, 2025 · Sep 26, 2025 · Sep 26, 2025
diff --git a/aviary/core/aviary_group.py b/aviary/core/aviary_group.py
@@ -128,7 +128,8 @@ def configure(self):
         mission_method = aviary_options.get_val(Settings.EQUATIONS_OF_MOTION)
 
         # Temporarily add extra stuff here, probably patched soon
-        if mission_method is HEIGHT_ENERGY:
+        # add a check for traj using hasattr for pre-mission tests.
+        if mission_method is HEIGHT_ENERGY and hasattr(self, 'traj'):
             # Set a more appropriate solver for dymos when the phases are linked.
             if MPI and isinstance(self.traj.phases.linear_solver, om.PETScKrylov):
                 # When any phase is connected with input_initial = True, dymos puts

diff --git a/aviary/docs/examples/modified_aircraft.csv b/aviary/docs/examples/modified_aircraft.csv
@@ -115,7 +115,7 @@ aircraft:wing:airfoil_technology,1.92669766647637,unitless
 aircraft:wing:area,1370.0,ft**2
 aircraft:wing:aspect_ratio,11.02091,unitless
 aircraft:wing:bending_material_mass_scaler,1.0,unitless
-aircraft:wing:chord_per_semispan,0.31,0.23,0.084,unitless
+aircraft:wing:chord_per_semispan_dist,0.31,0.23,0.084,unitless
 aircraft:wing:composite_fraction,0.2,unitless
 aircraft:wing:control_surface_area,137,ft**2
 aircraft:wing:control_surface_area_ratio,0.1,unitless

diff --git a/aviary/interface/test/sizing_results_for_test.json b/aviary/interface/test/sizing_results_for_test.json
@@ -806,7 +806,7 @@
         "<class 'float'>"
     ],
     [
-        "aircraft:wing:chord_per_semispan",
+        "aircraft:wing:chord_per_semispan_dist",
         [
             0.31,
             0.23,

diff --git a/aviary/models/aircraft/advanced_single_aisle/advanced_single_aisle_FLOPS.csv b/aviary/models/aircraft/advanced_single_aisle/advanced_single_aisle_FLOPS.csv
@@ -131,7 +131,7 @@ aircraft:wing:aspect_ratio,11.5587605382765,unitless
 aircraft:wing:aspect_ratio_reference,11.5587605382765,unitless
 aircraft:wing:bending_material_mass_scaler,1,unitless
 aircraft:wing:bwb_aft_body_mass_scaler,1,unitless
-aircraft:wing:chord_per_semispan,0.273522534166506,0.204274849507037,0.0888152947868224,0.0725353313595661,unitless
+aircraft:wing:chord_per_semispan_dist,0.273522534166506,0.204274849507037,0.0888152947868224,0.0725353313595661,unitless
 aircraft:wing:composite_fraction,0.33333,unitless
 aircraft:wing:control_surface_area_ratio,0.333,unitless
 aircraft:wing:dihedral,6,deg

diff --git a/aviary/models/aircraft/blended_wing_body/bwb_detailed_FLOPS.csv b/aviary/models/aircraft/blended_wing_body/bwb_detailed_FLOPS.csv
@@ -0,0 +1,233 @@
+# created 10/06/25
+# FLOPS-derived aircraft input deck
+
+# Input Values
+aircraft:air_conditioning:mass_scaler,1.0,unitless
+aircraft:anti_icing:mass_scaler,1.0,unitless
+aircraft:apu:mass_scaler,1.0,unitless
+aircraft:avionics:mass_scaler,1.0,unitless
+aircraft:blended_wing_body_design:detailed_wing_provided,True,unitless
+aircraft:blended_wing_body_design:passenger_leading_edge_sweep,45,deg
+aircraft:canard:area,0.0,ft**2
+aircraft:canard:aspect_ratio,0.0,unitless
+aircraft:canard:thickness_to_chord,0.0,unitless
+aircraft:crew_and_payload:baggage_mass_per_passenger,44.0,lbm
+aircraft:crew_and_payload:cargo_container_mass_scaler,1.0,unitless
+aircraft:crew_and_payload:design:num_business_class,100,unitless
+aircraft:crew_and_payload:design:num_first_class,28,unitless
+aircraft:crew_and_payload:design:num_passengers,468,unitless
+aircraft:crew_and_payload:design:num_tourist_class,340,unitless
+aircraft:crew_and_payload:design:num_seats_abreast_business,4,unitless
+aircraft:crew_and_payload:design:num_seats_abreast_first,4,unitless
+aircraft:crew_and_payload:design:num_seats_abreast_tourist,6,unitless
+aircraft:crew_and_payload:design:num_tourist_class,340,unitless
+aircraft:crew_and_payload:design:seat_pitch_business,39,inch
+aircraft:crew_and_payload:design:seat_pitch_first,61,inch
+aircraft:crew_and_payload:design:seat_pitch_tourist,32,inch
+aircraft:crew_and_payload:flight_crew_mass_scaler,1.0,unitless
+aircraft:crew_and_payload:misc_cargo,0.0,lbm
+aircraft:crew_and_payload:mass_per_passenger,165.0,lbm
+aircraft:crew_and_payload:num_business_class,100,unitless
+aircraft:crew_and_payload:num_first_class,28,unitless
+aircraft:crew_and_payload:num_flight_attendants,22,unitless
+aircraft:crew_and_payload:num_flight_crew,2,unitless
+aircraft:crew_and_payload:num_galley_crew,2,unitless
+aircraft:crew_and_payload:num_passengers,468,unitless
+aircraft:crew_and_payload:num_tourist_class,340,unitless
+aircraft:crew_and_payload:passenger_service_mass_scaler,1.0,unitless
+aircraft:crew_and_payload:wing_cargo,0.0,lbm
+aircraft:design:base_area,0.0,ft**2
+aircraft:design:empty_mass_margin_scaler,0.0,unitless
+aircraft:design:landing_to_takeoff_mass_ratio,0.8,unitless
+aircraft:design:lift_dependent_drag_coeff_factor,1.0,unitless
+aircraft:design:subsonic_drag_coeff_factor,1.0,unitless
+aircraft:design:supersonic_drag_coeff_factor,1.0,unitless
+aircraft:design:type,BWB,unitless
+aircraft:design:use_alt_mass,False,unitless
+aircraft:design:zero_lift_drag_coeff_factor,1.0,unitless
+aircraft:electrical:mass_scaler,1.0,unitless
+aircraft:engine:additional_mass_fraction,0.0,unitless
+aircraft:engine:constant_fuel_consumption,0.0,lbm/h
+aircraft:engine:data_file,'models/engines/PAX300_baseline_ENGDEK.csv',unitless
+aircraft:engine:flight_idle_max_fraction,1.0,unitless
+aircraft:engine:flight_idle_min_fraction,0.08,unitless
+aircraft:engine:flight_idle_thrust_fraction,0.0,unitless
+aircraft:engine:fuel_flow_scaler_constant_term,0.0,unitless
+aircraft:engine:fuel_flow_scaler_linear_term,0.0,unitless
+aircraft:engine:generate_flight_idle,True,unitless
+aircraft:engine:geopotential_alt,False,unitless
+aircraft:engine:ignore_negative_thrust,False,unitless
+aircraft:engine:interpolation_method,slinear,unitless
+aircraft:engine:mass_scaler,1,unitless
+aircraft:engine:num_engines,3,unitless
+aircraft:engine:num_fuselage_engines,3,unitless
+aircraft:engine:num_wing_engines,0,unitless
+aircraft:engine:reference_mass,22017.0,lbm
+aircraft:engine:reference_sls_thrust,86459.2,lbf
+aircraft:engine:scale_factor,0.8096304384,unitless
+aircraft:engine:scale_mass,True,unitless
+aircraft:engine:scale_performance,True,unitless
+aircraft:engine:scaled_sls_thrust,70000,lbf
+aircraft:engine:subsonic_fuel_flow_scaler,1.0,unitless
+aircraft:engine:supersonic_fuel_flow_scaler,1.0,unitless
+aircraft:engine:thrust_reversers_mass_scaler,0.0,unitless
+aircraft:engine:wing_locations,0.0,unitless
+aircraft:fins:area,184.89,ft**2
+aircraft:fins:num_fins,2,unitless
+aircraft:fins:taper_ratio,0.464,unitless
+aircraft:fins:mass_scaler,1.0,unitless
+aircraft:fuel:auxiliary_fuel_capacity,0.0,lbm
+aircraft:fuel:density,6.7,lbm/galUS
+aircraft:fuel:ignore_fuel_capacity_constraint,False,unitless
+aircraft:fuel:num_tanks,7,unitless
+aircraft:fuel:fuel_system_mass_scaler,1.0,unitless
+aircraft:fuel:fuselage_fuel_capacity,0.0,lbm
+aircraft:fuel:wing_fuel_fraction,0.68835495693,unitless
+aircraft:fuel:unusable_fuel_mass_scaler,1.0,unitless
+aircraft:furnishings:mass_scaler,1.0,unitless
+aircraft:fuselage:height_to_width_ratio,0.11,unitless
+aircraft:fuselage:mass_scaler,1.0,unitless
+aircraft:fuselage:military_cargo_floor,False,unitless
+aircraft:fuselage:num_fuselages,1,unitless
+aircraft:fuselage:simple_layout,False,unitless
+aircraft:fuselage:wetted_area_scaler,1.0,unitless
+aircraft:horizontal_tail:area,0.0,ft**2
+aircraft:horizontal_tail:aspect_ratio,0.1,unitless
+aircraft:horizontal_tail:mass_scaler,1.0,unitless
+aircraft:horizontal_tail:taper_ratio,0.0,unitless
+aircraft:horizontal_tail:thickness_to_chord,0.11,unitless
+aircraft:horizontal_tail:vertical_tail_fraction,0.0,unitless
+aircraft:horizontal_tail:wetted_area_scaler,1.0,unitless
+aircraft:hydraulics:system_pressure,3000.0,psi
+aircraft:hydraulics:mass_scaler,1.0,unitless
+aircraft:instruments:mass_scaler,1.0,unitless
+aircraft:landing_gear:main_gear_oleo_length,85.0,inch
+aircraft:landing_gear:main_gear_mass_scaler,1.0,unitless
+aircraft:landing_gear:nose_gear_oleo_length,87.0,inch
+aircraft:landing_gear:nose_gear_mass_scaler,1.0,unitless
+aircraft:nacelle:avg_diameter,12.608,ft
+aircraft:nacelle:avg_length,17.433,ft
+aircraft:nacelle:mass_scaler,0.0,unitless
+aircraft:nacelle:wetted_area_scaler,1.0,unitless
+aircraft:paint:mass_per_unit_area,0.0,lbm/ft**2
+aircraft:propulsion:engine_oil_mass_scaler,1.0,unitless
+aircraft:propulsion:misc_mass_scaler,0.0,unitless
+aircraft:vertical_tail:area,0,ft**2
+aircraft:vertical_tail:aspect_ratio,0,unitless
+aircraft:vertical_tail:mass_scaler,1.0,unitless
+aircraft:vertical_tail:num_tails,0,unitless
+aircraft:vertical_tail:taper_ratio,0.0,unitless
+aircraft:vertical_tail:thickness_to_chord,0.11,unitless
+aircraft:vertical_tail:wetted_area_scaler,1.0,unitless
+aircraft:wing:aeroelastic_tailoring_factor,0.0,unitless
+aircraft:wing:airfoil_technology,2.0,unitless
+aircraft:wing:bending_material_mass_scaler,1.0,unitless
+aircraft:wing:chord_per_semispan_dist,-1.0,58.03,0.4491,0.3884,0.3317,0.2886,0.2537,0.2269,0.2121,0.1983,0.1843,0.1704,0.1565,0.1426,0.1287,unitless
+aircraft:wing:composite_fraction,1,unitless
+aircraft:wing:control_surface_area_ratio,0.333,unitless
+aircraft:wing:detailed_wing,True,unitless
+aircraft:wing:dihedral,3.0,deg
+aircraft:wing:glove_and_bat,121.05,ft**2
+aircraft:wing:input_station_dist,0.0,0.35,0.4,0.45,0.5,0.55,0.6,0.6499,0.7,0.75,0.8,0.85,0.8999,0.95,1,unitless
+aircraft:wing:load_path_sweep_dist,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0,42.9,42.9,42.9,42.9,42.9,42.9,deg
+aircraft:wing:load_distribution_control,2.0,unitless
+aircraft:wing:mass_scaler,1,unitless
+aircraft:wing:max_camber_at_70_semispan,2,unitless
+aircraft:wing:misc_mass_scaler,1.0,unitless
+aircraft:wing:num_integration_stations,50,unitless
+aircraft:wing:outboard_semispan,86.75,ft
+aircraft:wing:shear_control_mass_scaler,1.0,unitless
+aircraft:wing:span,253.720756,ft
+aircraft:wing:span_efficiency_factor,0.0,unitless
+aircraft:wing:span_efficiency_reduction,False,unitless
+aircraft:wing:strut_bracing_factor,0.0,unitless
+aircraft:wing:surface_control_mass_scaler,1.0,unitless
+aircraft:wing:sweep,35.7,deg
+aircraft:wing:taper_ratio,0.311,unitless
+aircraft:wing:thickness_to_chord,0.11,unitless
+aircraft:wing:thickness_to_chord_reference,0.11,unitless
+aircraft:wing:thickness_to_chord_dist,-1.0,0.15,0.1132,0.0928,0.0822,0.0764,0.0742,0.0746,0.0758,0.0758,0.0756,0.0756,0.0758,0.076,0.076,unitless
+aircraft:wing:ultimate_load_factor,3.75,unitless
+aircraft:wing:var_sweep_mass_penalty,0.0,unitless
+aircraft:wing:wetted_area_scaler,1.0,unitless
+mission:constraints:max_mach,0.85,unitless
+mission:design:gross_mass,874099,lbm
+mission:design:lift_coefficient,-1.0,unitless
+mission:design:range,7750,NM
+mission:design:thrust_takeoff_per_eng,0.25,lbf
+mission:landing:initial_velocity,140,ft/s
+mission:landing:lift_coefficient_max,3.0,unitless
+mission:landing:rolling_friction_coefficient,0.025,unitless
+mission:takeoff:lift_coefficient_max,2.0,unitless
+mission:summary:cruise_mach,0.85,unitless
+mission:summary:fuel_flow_scaler,1.0,unitless
+settings:aerodynamics_method,FLOPS,unitless
+settings:equations_of_motion,height_energy,unitless
+settings:mass_method,FLOPS,unitless
+
+# Unconverted Values
+AERIN.FLLDG,11000
+AERIN.FLTO,11000
+AERIN.ITPAER,2
+AERIN.MYAERO,0
+AERIN.XLLAM,0
+CONFIN.CH,39000
+CONFIN.GW,874099
+CONFIN.OFF,0
+CONFIN.OFG,1
+ENGDIN.MAXCR,1
+FUSEIN.OSSPAN,86.75
+MISSIN.ALTRAN,200
+MISSIN.APPRTM,4
+MISSIN.CLAMIN,0
+MISSIN.CRALT,45000,25000,1500
+MISSIN.CRMACH,0.85,0.6,0
+MISSIN.DEAMIN,0
+MISSIN.FWF,-0.001
+MISSIN.HOLDTM,30
+MISSIN.IATA,0
+MISSIN.IFLAG,2
+MISSIN.IHOPOS,1
+MISSIN.IOC,1,4,4
+MISSIN.IRS,1
+MISSIN.IRW,1
+MISSIN.ISKAL,1
+MISSIN.ITTFF,1
+MISSIN.IVS,1
+MISSIN.MSUMPT,1
+MISSIN.NCLIMB,1
+MISSIN.NCLRES,1
+MISSIN.NCRHOL,3
+MISSIN.NCRRES,2
+MISSIN.NCRTH,1
+MISSIN.NCRUSE,3
+MISSIN.NPCON,0
+MISSIN.RCIN,300
+MISSIN.RESTRP,0.05
+MISSIN.TAKOTM,2
+MISSIN.TAXITM,5
+MISSIN.TAXOTM,9
+MISSIN.THOLD,0.1
+MISSIN.TIMMAP,2
+OPTION.IANAL,3
+OPTION.ICOST,0
+OPTION.IFITE,3
+OPTION.ILAND,0
+OPTION.INENG,1
+OPTION.IPLTTH,0
+OPTION.ITAKOF,0
+OPTION.IXFL,1
+OPTION.MPRINT,1
+OPTION.NOPRO,0
+PCONIN.CONALT,35000
+PCONIN.CONLIM,300
+PCONIN.CONMCH,0.85
+PCONIN.CONPC,1
+PCONIN.ICONSG,2
+PCONIN.ICONTP,5
+WTIN.ARFIN,1.952
+WTIN.ISPOWE,0
+WTIN.NETAW,14
+WTIN.SWPFIN,39.42
+WTIN.TCFIN,0.08
+WTIN.WINL,0
-Original file line number
+Diff line change
@@ Expand Up / @@ -806,7 +806,7 @@ @@
             "<class 'float'>"
         ],
         [
-            "aircraft:wing:chord_per_semispan",
+            "aircraft:wing:chord_per_semispan_dist",
             [
 .31,
 .23,
@@ Expand Down @@