1
Robert M Carrillo, Muriel L Koss: Method of manufacturing of honeycomb noise attenuation structure and the structure resulting therefrom. Rohr, Patrick J Schlesinger, Frank D Gilliam, May 26, 1981: US04269882 (18 worldwide citation)

Method of fabricating attenuation sandwich panels having a central cellular core positioned between and bonded to an imperforate facing sheet on one surface thereof and a perforate facing sheet with an outer layer of porous fibrous material adhered to the other surface. The combined perforate sheet ...


2
Christopher E Whitemore, Robert M Carrillo: Method of manufacturing of honeycomb noise attenuation structure and the structure resulting from the method. Rohr, Patrick J Schlesinger, Frank D Gilliam, Jay M Cantor, September 29, 1981: US04292356 (12 worldwide citation)

Method of making attenuation sandwich panels having a cellular core positioned between and bonded to an imperforate facing sheet on one surface thereof and a perforate sheet with an outer layer of porous fabric material adhered to the other surface. The combined perforate facing sheet and porous fib ...