WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO2000029751) LOW ASPECT RATIO COMPRESSOR CASING TREATMENT
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2000/029751    International Application No.:    PCT/CA1999/001071
Publication Date: 25.05.2000 International Filing Date: 12.11.1999
Chapter 2 Demand Filed:    06.06.2000    
IPC:
F04D 27/02 (2006.01), F04D 29/42 (2006.01)
Applicants: PRATT & WHITNEY CANADA INC. [CA/CA]; Jeffrey W. Astle, Legal Services (01BE5), 1000 Marie Victorin, Longueuil, Quebec J4G 1A1 (CA)
Inventors: LEBLANC, Andre; (CA).
OUELLET, Gilbert; (CA)
Agent: ASTLE, Jeffrey, W.; Pratt & Whitney Canada Inc., Legal Dept. (01BE5), 1000 Marie Victorin, Longueuil, Quebec J4G 1A1 (CA)
Priority Data:
2,254,043 13.11.1998 CA
09/258,286 26.02.1999 US
Title (EN) LOW ASPECT RATIO COMPRESSOR CASING TREATMENT
(FR) CORPS DE COMPRESSEUR COMPRENANT UNE CONFIGURATION A FAIBLE RAPPORT DE FORME
Abstract: front page image
(EN)A compressor (10) for a gas turbine engine, comprising a casing (26) having an inner surface defining a plurality of circumferentially spaced-apart grooves (36) adjacent the tips of a row of rotor blades (16). Each groove (36) has a depth which is less than half the width thereof in order to increase surge margin at off design points without affecting the performance of the compressor (10) under normal operating conditions.
(FR)L'invention concerne un compresseur (10) pour un moteur de turbine à gaz (26), comprenant un corps dont la surface intérieure comporte une pluralité de rainures (36) espacées sur le pourtour, adjacentes aux pointes d'une rangée d'ailettes (16) de rotor. Chaque rainure (36) présente une profondeur inférieure à la moitié de sa largeur, de manière à accroître la marge de surpression en des points extérieurs, sans entraver la performance du compresseur (10) dans des conditions de fonctionnement normales.
Designated States: JP, RU.
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE).
Publication Language: English (EN)
Filing Language: English (EN)