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1. WO2016137566 - TIP CLEARANCE HARMONIC ESTIMATION

Publication Number WO/2016/137566
Publication Date 01.09.2016
International Application No. PCT/US2015/067025
International Filing Date 21.12.2015
IPC
B64C 27/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
64AIRCRAFT; AVIATION; COSMONAUTICS
CAEROPLANES; HELICOPTERS
27Rotorcraft; Rotors peculiar thereto
CPC
B64C 27/006
BPERFORMING OPERATIONS; TRANSPORTING
64AIRCRAFT; AVIATION; COSMONAUTICS
CAEROPLANES; HELICOPTERS
27Rotorcraft; Rotors peculiar thereto
006Safety devices
B64C 27/008
BPERFORMING OPERATIONS; TRANSPORTING
64AIRCRAFT; AVIATION; COSMONAUTICS
CAEROPLANES; HELICOPTERS
27Rotorcraft; Rotors peculiar thereto
008Rotors tracking or balancing devices
B64C 27/10
BPERFORMING OPERATIONS; TRANSPORTING
64AIRCRAFT; AVIATION; COSMONAUTICS
CAEROPLANES; HELICOPTERS
27Rotorcraft; Rotors peculiar thereto
04Helicopters
08with two or more rotors
10arranged coaxially
B64C 27/57
BPERFORMING OPERATIONS; TRANSPORTING
64AIRCRAFT; AVIATION; COSMONAUTICS
CAEROPLANES; HELICOPTERS
27Rotorcraft; Rotors peculiar thereto
54Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
56Initiating means, e.g. actuated personally
57automatic or condition responsive, e.g. responsive to rotor speed, torque or thrust
B64C 27/58
BPERFORMING OPERATIONS; TRANSPORTING
64AIRCRAFT; AVIATION; COSMONAUTICS
CAEROPLANES; HELICOPTERS
27Rotorcraft; Rotors peculiar thereto
54Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
58Transmitting means
Applicants
  • SIKORSKY AIRCRAFT CORPORATION [US]/[US]
Inventors
  • GEIGER, Derek
  • BANNING, Jeremy Frimpong
Agents
  • LEVY, Howard I.
Priority Data
62/119,65923.02.2015US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) TIP CLEARANCE HARMONIC ESTIMATION
(FR) ESTIMATION HARMONIQUE DE JEU D'EXTRÉMITÉ
Abstract
(EN)
A method of tip clearance estimation for a rotor blade is provided. The method includes measuring blade deflection of the rotor blade, generating a harmonic function for the rotor blade from the measured blade deflection, predicting tip displacement of the rotor blade using the generated harmonic function and adjusting a position of the rotor blade according to the predicted tip displacement.
(FR)
L'invention concerne un procédé d'estimation de jeu d'extrémité pour une pale de rotor. Le procédé consiste à mesurer la déformation de pale de la pale de rotor, à générer une fonction harmonique pour la pale de rotor à partir de la déformation de pale mesurée, à prédire le déplacement d'extrémité de la pale de rotor à l'aide de la fonction harmonique générée et à ajuster une position de la pale de rotor selon le déplacement d'extrémité prédit.
Also published as
Latest bibliographic data on file with the International Bureau