| 摘要 |
<p>A bleed valve (30) bleeds hot gases from a compressor into a bypass duct (22) of a gas turbine engine (10). The valve (30) comprises a diffuser (50) having opposing walls (56, 58) and a divider (61) located between the walls (56, 58) and which define at least two passages (52, 54) through which a bleed fluid flows (52C, 54C) and into a fluid flow (B) through the bypass duct. The passages are angled (¸) towards each other to force the two gas flows (52C and 54C) together to form a high aspect ratio plume (60). This plume (60) has a relatively large surface area that that improves mixing with the bypass flow to cool it and prevented otherwise hot bleed flows from impinging on heat sensitive components adjacent the bypass duct.</p> |
