| 摘要 |
<p>An acoustic assembly for a fan casing of a turbofan engine is made up from acoustic liner panel components which each comprise a body 2 and a backing sheet 12. The body 2 is an integral injection moulding comprising an acoustic structure 4, a perforated sheet 6 and fastening portions 8. Adjacent panel components engage each other at non-linear circumferential edges which comprise lugs 14A on one of the components which are received in recesses 14B of the other component. The lugs are defined by following cell walls 16 over a convoluted path along the circumferential edge.</p> |
