AIR ACCELERATOR ON TIE ROD WITHIN TURBINE DISK BORE

Gas turbine engine high pressure rotor (12) first and second high pressure turbine stages (55, 56) include first and second stage disks (60, 62) having first and second stage disk bores (164, 166) and a single tie rod (170) therethrough. First and second bore annular flowpaths (184, 186) are radiall...

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Bibliographische Detailangaben
Hauptverfasser:	PEPI, JASON FRANCIS, NORCOTT, KEVIN PATRICK, VON DER ESCH, ROBERT CLAYTON
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINE PLANTS IN GENERAL GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	Gas turbine engine high pressure rotor (12) first and second high pressure turbine stages (55, 56) include first and second stage disks (60, 62) having first and second stage disk bores (164, 166) and a single tie rod (170) therethrough. First and second bore annular flowpaths (184, 186) are radially located between first and second stage disk bores (164, 166) and tie rod (170). A means for increased cooling and/or heating in second stage disk bore (166) is axially located within second stage disk bore (166). The means may include an airflow accelerator (188) such as one or more annular ribs (190) on the tie rod (170). A bore annular cross-sectional flow area (200) between second stage disk hub (156) and ribs (190) may be substantially smaller than between second stage disk hub (156) and tie rod (170). An axially unobstructed inlet (206) into second bore annular flowpath (186) allows fully axially flowing and axially unobstructed flowing of second stage bore cooling air (180) into inlet (206).