초록 ▼

A turbofan engine is provided with a flow splitter at the inlet of the compressor with preloaded inner and outer walls. The inner wall and outer wall are positioned generally coaxially of each other and form a generally hollow, annular shell structure which is stressed in the axial direction. The in

A turbofan engine is provided with a flow splitter at the inlet of the compressor with preloaded inner and outer walls. The inner wall and outer wall are positioned generally coaxially of each other and form a generally hollow, annular shell structure which is stressed in the axial direction. The inner wall comprised of two axially separable ring sections is placed in compression while the outer wall is placed in tension. The axial stressing compensates for transient growth differentials due to thermals in the inner and outer walls, also for tolerance buildup between the components forming the walls and for deflections that are created by blow-off loads transmitted through the walls from inlet guide vanes.

대표청구항 ▼

A prestressed flow splitter in a turbofan engine projecting forwardly at the front of the engine for dividing ingested fan air between the compressor inlet and the fan duct comprising: an annular shell structure surrounding the compressor inlet and having an annular inside wall defining the outer ex

A prestressed flow splitter in a turbofan engine projecting forwardly at the front of the engine for dividing ingested fan air between the compressor inlet and the fan duct comprising: an annular shell structure surrounding the compressor inlet and having an annular inside wall defining the outer extremity of the compressor inlet duct and an annular outside wall defining the innermost limits of the fan duct surrounding the compressor inlet, the inside and outside walls being joined at the lip of the compressor inlet and having separate trailing portions extending axially rearward, the lip projecting forwardly and being unsupported at the leading edge of the splitter, and the trailing portions of the inside and outside wall being connected to the engine to support the forward projecting lip; and load carrying means connected between the trailing portion of the inside wall and the trailing portion of the outside wall for axially preloading the inside wall in compression against the outside wall in the assembled condition of the flow splitter, whereby the inside and outside walls are reactively stressed in the non-operative engine condition.