Non-intrusive measurement of the pitch of a blade
AssigneeSafran Aircraft Engines
InventorsGilles POLO FILISAN, Titouan Alexis Andre Roger BOUILLARD, Jerome DIAS, Fabien Julien MOURIES
Life of this patent
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Abstract
A blade pitch measuring device of an un-ducted fan of a turbomachine, the fan including a hub, at least one platform rotatable with respect to the hub and at least one blade mounted on the platform, the device includes at least one first visual marker attached to the platform, at least one second visual marker attached to the hub, the first and the second visual marker forming a pattern which evolves depending on the pitch of the blade, and at least one optical acquisition device, the optical acquisition device being configured to capture an image of the pattern so as to deduce from it the pitch of the blade.
Claims10
A blade pitch measuring device of an un-ducted fan of a turbomachine, the fan including comprising:
- a. a hub,
- b. at least one platform rotatable with respect to the hub and
- c. at least one blade mounted on the platform, wherein:
- at least one first visual marker attached to the platform,
- at least one second visual marker attached to the hub, the first and the second visual marker forming a pattern which evolves depending on the pitch of the blade and
- at least one optical acquisition device, the optical acquisition device being configured to capture an image of the pattern so as to deduce the pitch of the blade from the image of the pattern.
Dependencies are inferred from the claim text.