Quantifying the Effect Of Fuselage Cross-Sectional Shape on Structural Weight (PREPRINT); Interim rept. 1 Mar 2005-1 Mar 2007

摘要

Analytical trade studies were set up and are being performed to quantify the effect of fuselage cross-sectional shape on structural weight for a cargo transport aircraft. The target vehicle design reflects various geometry, aerodynamic and inertia loads, internal pressurization, and other requirements associated with a medium-sized military transport configuration. Several elliptical cross-sections and at least one cross section containing one or more flat (LO-friendly) outer mold line segments are being evaluated. Aerodynamic loading on the fuselage is being accounted for in the trades. FEM generation and analysis includes automated structural sizing for the cargo compartment portion of the fuselage using HyperSizer. The results of this study will be used to influence decisions regarding the shape preferences for potential fuselage design candidates. The models that are created can also be used to support additional in-house trade studies to look at new structural materials and design concept candidates for transport fuselage primary structure.