Subfloor structure with an integral hull for a rotary wing aircraft

摘要

The invention relates to a subfloor structure (3) with an integral hull, for a rotary wing aircraft (1). The subfloor structure (3) comprises an integral subfloor hull (18) that defines in one piece, upward web portions (20) acting as longerons and a bottom central portion (23) offering both load bearing capabilities and aerodynamical loft features. The subfloor structure (3) is useful for rotary wing aircrafts such as helicopters, and is e.g. made of composite and / or light alloy such as aluminium.