MULTI VANE SEGMENT AND CASTING METHOD THEREOF

• Main Authors: SOMMER THOMAS PETER, WARDLE BRIAN KENNETH, VON ARX BEAT, SAXER ANDRE
• Format: Patent
• Language: English
• Published: 27.05.2010
• Subjects: BLASTING; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; ENGINE PLANTS IN GENERAL; FOUNDRY MOULDING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS; INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; PERFORMING OPERATIONS; POWDER METALLURGY; STEAM ENGINES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; WEAPONS

PROBLEM TO BE SOLVED: To reduce casting defects in casting by the wax pattern method. SOLUTION: A multi vane segment includes: a platform 2; at least three airfoils 10, extending radially from the platform 2, and having a combined airfoil volume, a chord length 15 and an airfoil thickness 16; and a shroud 20 with a shroud volume, disposed on an end of the airfoils 10 radially distant from the platform 2. The ratio of the shroud volume to the combined airfoils volume defines a first ratio, which is greater or equal to 1.4:1. COPYRIGHT: (C)2010,JPO&INPIT