Fluid discharge vibration damping strips for acoustic protection of aircraft turbomachine fan casing
AssigneeSnecma
InventorsGuillaume Roffi, Julien Tran
Life of this patent
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Abstract
An acoustic protection device for a fan casing of an aircraft turbomachine, including an acoustic protection panel forming a ferrule sector centered on a center axis, and one or more vibration damping strips pressed on a first side to an external surface of the panel and on a second side to an internal surface of the casing, each damping strip including two opposite edges each including an upstream end and a downstream end spaced from each other along a direction of the center axis. At least one of both opposite edges of at least one of the damping strips is shaped such that liquid present on this edge can flow by gravity towards either or both of its upstream and downstream ends.
Claims11
1-10. (canceled)
An acoustic protection device for a fan casing of an aircraft turbomachine, comprising:
- an acoustic protection panel forming a ferrule sector centered on a center axis same as a longitudinal axis of the fan casing;
- one or more vibration damping strips pressed on a first side to an external surface of the acoustic protection panel and being pressed on a second side to an internal surface of the fan casing, each damping strip including two opposite edges each including an upstream end and a downstream end spaced from each other along the direction of the center axis,
- wherein at least one of the two opposite edges of at least one of the damping strips is shaped such that liquid present in this edge can flow by gravity toward either or both of its upstream and downstream ends.
Dependencies are inferred from the claim text.