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WAGNER: a new code for parametrical structural study of fuselages of civil transport aircraft

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Abstract

In the present paper, a new code (named WAGNER) for a parametric and automatic Finite Element mesh generation of fuselages of civil transport aircraft is presented. The code aims at providing a time-cheap and reliable tool in the conceptual design phase in order to evaluate stresses and deformations in the whole fuselage structure; these data allows us a preliminary structural sizing to be used as a baseline for deeper investigations and to determine the empty weight of the fuselage on view of a preliminary prediction of the maximum take-of weight of the aircraft. As an example of application, two layouts have been analysed: a non conventional two aisle single-deck (SD) with 2-4-2 passengers abreast and a double-deck (DD) with 3–3 passengers abreast/deck. FEM results for two different load cases (combined loads at limit load factor and ultimate pressurization) with geometrical linear and non-linear solutions, are finally discussed.

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Abbreviations

α:

Angle of attack

α Λ :

Auxiliary angle

β:

Angle of sideslip

γ:

Beam inclination angle

η:

Bending moments ratio with and without a rod

Ẋ:

Time derivative of X

\(\left[ {\frac{t}{c}} \right]\) :

Airfoil thickness (percent)

Λ:

Sweep angle, beam slenderness

λ:

Taper ratio

Lb, Mb, Nb:

Moments resultants along body frame axes

Φ:

Roll angle

Ψ:

Yaw angle

Θ:

Pitch angle

A:

Cross section area

c, cR, cT:

Airfoil chord, root chord, tip chord

CG:

Center of gravity

CL:

Combined loads

DD:

Double-deck confguration

E:

Young ’s modulus

g:

Gravity acceleration

IR:

Inertia relief

J:

Cross section moment of inertia

L:

Wing planform span, beam length

M:

Bending moment

MTOW:

Maximum take-of weight

nz:

Vertical load factor

p:

Pressure

PrP:

PrandtlPlane

q:

Line load

RP:

Reference Point

SD:

Single-deck confguration

UP:

Ultimate pressure load case

V0:

Flight speed

Xb, Yb, Zb:

Forces resultants along body frame axes

xb, yb, zb:

Body frame axes

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Author information

Authors and Affiliations

  1. Department of Civil and Industrial Engineering, Aerospace section, University of Pisa, Italy

    M. Picchi Scardaoni

  2. SkyBox Engineering S. r. l., Italy

    V. Binante & V. Cipolla

Authors
  1. M. Picchi Scardaoni
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  2. V. Binante
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  3. V. Cipolla
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Picchi Scardaoni, M., Binante, V. & Cipolla, V. WAGNER: a new code for parametrical structural study of fuselages of civil transport aircraft. Aerotec. Missili Spaz. 96, 136–147 (2017). https://doi.org/10.1007/BF03404748

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  • DOI: https://doi.org/10.1007/BF03404748

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