RCAIDE.Library.Methods.Mass_Properties.Weight_Buildups.Conventional.Transport.Raymer.compute_main_wing_weight

compute_main_wing_weight

compute_main_wing_weight(vehicle, wing, settings)

Calculates the wing weight for transport aircraft using Raymer’s empirical method.

Parameters:

• vehicle (RCAIDE.Vehicle()) –

  Vehicle data structure containing:

  • mass_properties.max_takeofffloat

    Maximum takeoff weight [kg]

  • flight_envelope.ultimate_loadfloat

    Ultimate load factor

  • systems.accessoriesstr

    Aircraft type (‘short-range’, ‘commuter’, ‘medium-range’, ‘long-range’, ‘sst’, ‘cargo’)

• wing (RCAIDE.Component()) –

  Wing component containing:

  • taperfloat

    Wing taper ratio

  • sweeps.quarter_chordfloat

    Quarter chord sweep angle [rad]

  • thickness_to_chordfloat

    Thickness-to-chord ratio

  • aspect_ratiofloat

    Wing aspect ratio

  • areas.referencefloat

    Wing reference area [m^2]

Returns:

weight – Weight of the wing structure [kg]

Return type:

float

Notes

This method implements Raymer’s correlation for transport aircraft wing weight estimation, accounting for geometry, loads, and configuration effects.

Major Assumptions

• Control surfaces comprise 10% of wing area

• Correlation based on transport category aircraft data

• SST configurations treated with zero sweep angle parameter

• If advanced composites are used, the wing weight is reduced by 10%

Theory The wing weight is calculated using: .. math:

W_{wing} = 0.0051(W_{dg}N_z)^{0.557}S_w^{0.649}A^{0.5}(t/c)^{-0.4}(1+\lambda)^{0.1}\cos(\Lambda)^{-1.0}S_{cs}^{0.1}

where:

• \(W_{dg}\) is design gross weight

• \(N_z\) is ultimate load factor

• \(S_w\) is wing area

• \(A\) is aspect ratio

• \(t/c\) is thickness ratio

• \(\lambda\) is taper ratio

• \(\Lambda\) is quarter-chord sweep

• \(S_{cs}\) is control surface area

References

[1] Raymer, D., “Aircraft Design: A Conceptual Approach”, AIAA

Education Series, 2018.

See also

RCAIDE.Library.Methods.Mass_Properties.Weight_Buildups.Conventional.Transport.Raymer.compute_horizontal_tail_weight, RCAIDE.Library.Methods.Mass_Properties.Weight_Buildups.Conventional.Transport.Raymer.compute_vertical_tail_weight, RCAIDE.Library.Methods.Mass_Properties.Weight_Buildups.Conventional.Transport.Raymer.compute_operating_empty_weight