| 摘要 |
Aircraft arresting beds (10) constructed of cellular concrete at ends of runways may be subject to damaging effects of jet blast phenomena. Arresting units resistant to such effects are described. A block of compressible material (12), such as cellular concrete, provides compressive failure characteristics suitable for arresting travel of an aircraft overrunning a runway. A top sheet (14) of relatively thin frangible material positioned above the block (12) provides a stronger, more damage resistant surface, while still readily fracturing in an arresting incident. Intermediate material (16), such as a foam layer, under the top sheet (14) may be included to provide a protective cushioning effect by mitigating transmission of external phenomena forces to the block (12). A wrapping (18), such as polyester net, at least partially enclosing other portions of the arresting unit provides a stable unified composite, without destroying desired compressive failure characteristics of the unit. Arresting units (10) may also include a bottom layer (20) of material stronger than the block of compressible material and a sealant coating with water resistant properties. ® KIPO & WIPO 2009
|
