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1. WO1996003584 - AIRFOIL NOISE CONTROL

Publication Number WO/1996/003584
Publication Date 08.02.1996
International Application No. PCT/US1995/009075
International Filing Date 19.07.1995
Chapter 2 Demand Filed 24.01.1996
IPC
F01D 5/14 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5Blades; Blade-carrying members; Heating, heat-insulating, cooling, or antivibration means on the blades or the members
12Blades
14Form or construction
F04D 29/66 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
66Combating cavitation, whirls, noise, vibration, or the like; Balancing
CPC
F01D 5/148
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5Blades; Blade-carrying members
12Blades
14Form or construction
148Blades with variable camber, e.g. by ejection of fluid
F04D 29/663
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
66Combating cavitation, whirls, noise, vibration or the like
661especially adapted for elastic fluid pumps
663Sound attenuation
Y02T 50/671
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
50Aeronautics or air transport
60Efficient propulsion technologies
67Relevant aircraft propulsion technologies
671Measures to reduce the propulsor weight
Y02T 50/673
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
50Aeronautics or air transport
60Efficient propulsion technologies
67Relevant aircraft propulsion technologies
673Improving the blades aerodynamics
Applicants
  • UNITED TECHNOLOGIES CORPORATION [US/US]; United Technologies Building Hartford, CT 06101, US
Inventors
  • SCHLINKER, Robert, H.; US
  • KERSCHEN, Edward, J.; US
Agents
  • SNYDER, Troxell, K.; United Technologies Research Center Legal Dept. Mail Stop 129-6 411 Silver Lane East Hartford, CT 06108, US
Priority Data
08/278,43921.07.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) AIRFOIL NOISE CONTROL
(FR) DIMINUTION DU BRUIT DES AUBES
Abstract
(EN)
Acoustic noise resulting from the interaction of a periodic pressure and velocity fluctuation induced by a periodically passing blade wake interacting with a dowstream airfoil (10) is attenuated by locating an antisymmetric pressure wave generator (30) adjacent the leading edge (18) of the vane (10).
(FR)
On atténue le bruit produit par l'interaction d'une fluctuation périodique de la pression et de la vitesse induite par le tourbillon d'une aube mobile agissant sur une aube fixe (10) en aval, en plaçant un générateur (30) d'ondes de pression antisymétriques près du bord avant (18) de l'aube fixe (10).
Also published as
Latest bibliographic data on file with the International Bureau