G - Physics – 08 – C
Patent
G - Physics
08
C
340/135.8
G08C 21/00 (2006.01) B64C 11/30 (2006.01)
Patent
CA 2015530
Pitch of a blade ( 12) on an aircraft engine propulsor (14) is determined by employing a shaft (22) and a bevel gear (23) to alter relative circumferential distance between a first set of teeth (25) and a second set of teeth (26). Said teeth (25, 26) creates fluctuations in a magnetic field generated by a magnetic poll piece (28a) wherein said fluctuations are converted to a signal (30) by a coil (28) located on a subsequent engine section (8). The time between pulses of the signal (30) is a function of said relative circumferential distance whereby the time between pulses is a function of the pitch of the blade (12).
Pas d'une pale (12) d'hélice (14) de moteur d'avion qu'on détermine en employant un arbre (22) et un engrenage conique (23) pour modifier la distance circonférentielle relative entre un premier jeu de dents (25) et un deuxième jeu de dents (26). Lesdites dents (25, 26) créent des fluctuations dans un champ magnétique généré par une pièce de tête (28a) magnétique, lesdites fluctuations étant converties en un signal (30) par une bobine (28) située sur une section suivante (8) du moteur. Le délai entre les impulsions du signal (30) est fonction de ladite distance circonférentielle relative alors que le délai entre les impulsions est fonction du pas de la pale (12).
Bartle Robert G.
Martin Anthony N.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
United Technologies Corporation
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