초록 ▼

A gas turbine engine of the type having generally cylindrical casings defining concentric bypass and turbine discharge passages including a support structure in the turbine discharge passage. The support structure is cooled with low pressure compressor discharge air through a scoop located in the by

A gas turbine engine of the type having generally cylindrical casings defining concentric bypass and turbine discharge passages including a support structure in the turbine discharge passage. The support structure is cooled with low pressure compressor discharge air through a scoop located in the bypass gas passage. The support structure includes a plurality of radial fairings, each of which includes a discharge chute which is approximately perpendicular to its respective fairing. The discharge chutes each communicate with the compressor discharge cool air flow in its respective fairing so as to provide a discharge flow in the form of a stratified annulus to cool downstream members which are aligned with the discharge chutes. The cooling air further reduces the temperature of the downstream gases so as to reduce the potential for flashback in the engine. The aerodynamic form and placement of the discharge chutes provide enhancements to the operation of the diffuser, of which the support structure is a part.

대표청구항 ▼

A gas turbine engine of the type having generally cylindrical casings defining concentric bypass air and turbine discharge passages, and further comprising: a support within the turbine discharge passage comprising an outer ring and an inner ring connected by a plurality of radially extending member

A gas turbine engine of the type having generally cylindrical casings defining concentric bypass air and turbine discharge passages, and further comprising: a support within the turbine discharge passage comprising an outer ring and an inner ring connected by a plurality of radially extending members, said radial members being positioned between members defining a flow channel for turbine discharge gases, each of the members including a hollow inner chamber; means for delivering a supply of cooling air to the hollow inner chamber of each of the radial members; and, means for discharging the cooling air from the radial members solely into an annulus spaced from and between said flow channel defining members for cooling a downstream engine member.