| US 11,780,179 B2 | ||
| Thermoplastic composite panel with corrugated peaks and troughs stiffening systems and methods | ||
| Jennifer Davis, La Jolla, CA (US); and Nathaniel M. Gray, Stratham, NH (US) | ||
| Assigned to ROHR, INC., Chula Vista, CA (US) | ||
| Filed by ROHR, INC., Chula Vista, CA (US) | ||
| Filed on Sep. 2, 2021, as Appl. No. 17/464,997. | ||
| Prior Publication US 2023/0060367 A1, Mar. 2, 2023 | ||
| Int. Cl. B29C 70/46 (2006.01); B29C 70/38 (2006.01); B29C 51/10 (2006.01); B29C 51/12 (2006.01); B29C 51/14 (2006.01); B29C 65/02 (2006.01); B29D 99/00 (2010.01) | ||
| CPC B29C 70/382 (2013.01) [B29C 51/105 (2013.01); B29C 51/12 (2013.01); B29C 51/14 (2013.01); B29C 65/022 (2013.01); B29C 70/46 (2013.01); B29D 99/0014 (2013.01)] | 15 Claims |
|
1. A method for forming a fiber-reinforced thermoplastic control surface, comprising:
stacking plies of thermoplastic composite sheets to a first desired thickness to form a first skin; stacking plies of thermoplastic composite sheets to a second desired thickness to form a second skin; forming the first skin in a first contour; forming the second skin in a second contour; forming a stiffening member including a thermoplastic resin, the stiffening member including a cross-sectional shape having a plurality of peaks and troughs, the cross-sectional shape defining a sinusoidal wave with a varying amplitude; assembling the stiffening member between the first skin and the second skin; and joining the stiffening member to the first skin and the second skin. |