Plates and panels
Perforated Acoustic Liner Facesheet
- Bounding box
- 20.0 × 20.0 × 0.8 mm
- Engine
- Precision B-rep
- Parameters
- 9
- Published
- October 7, 2026
Download
Free to download and use. See the terms.
The prompt
Design a perforated acoustic-liner facesheet for an aircraft engine nacelle. Replace the conventional circular perforations with elongated slots. Facesheet thickness: 0.8 mm. Slot shape: elongated slot with rounded semicircular ends. Slot overall length: 2.0 mm. Slot overall width: 0.45 mm. Slot aspect ratio: approximately 4.44:1. The slots must be complete through-holes through the 0.8 mm facesheet. Use smooth rounded slot ends with no sharp corners. Orient all slots parallel to the grazing-flow direction. Create a uniform repeating slot pattern across the facesheet. Maintain an open-area ratio of approximately 14% (OAR ≈ 0.14), matching the baseline circular-perforation configuration. Adjust slot spacing and number of slots as required to maintain approximately 14% OAR. Keep sufficient material between adjacent slots for structural integrity. Make the geometry fully parametric and editable. Create the slots as actual cut-through holes, not surface markings or recesses. Generate a clean, manufacturable 3D CAD model suitable for CATIA and ANSYS acoustic simulation. Also create a dimensioned sketch showing the 2.0 mm slot length, 0.45 mm slot width, and 0.8 mm facesheet thickness. Do not change the facesheet thickness or slot dimensions unless required to maintain the target 14% open-area ratio.
Parameters
| Name | Value | Range |
|---|---|---|
| Sheet Length | 20 mm | 10 – 200 |
| Sheet Width | 20 mm | 10 – 200 |
| Facesheet Thickness | 0.8 mm | 0.4 – 3 |
| Slot Overall Length | 2 mm | 0.5 – 6 |
| Slot Overall Width | 0.45 mm | 0.1 – 2 |
| Slot Spacing Along Flow | 3.2 mm | 2.3 – 10 |
| Slot Spacing Across Flow | 1.76 mm | 0.7 – 5 |
| Edge Margin X | 1 mm | 0.2 – 5 |
| Edge Margin Y | 1 mm | 0.2 – 5 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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