TP Composites Go Larger on New Aircraft Wing.What are said to be the largest aircraft wing parts made from a thermoplastic A polymer material that turns to liquid when heated and becomes solid when cooled. There are more than 40 types of thermoplastics, including acrylic, polypropylene, polycarbonate and polyethylene. composite make up the inboard Built in. Inboard devices are built into the main unit. Contrast with outboard. See onboard. leading-edge nose on the new Airbus A340-500 and A340-600 series commercial jets. Fokker Special Products in Hoogeveen, Netherlands, molds the parts of PPS (Packets Per Second) The measurement of activity in a local area network (LAN). In LANs such as Ethernet, Token Ring and FDDI, as well as the Internet, data is broken up and transmitted in packets (frames), each with a source and destination address. and glass fabric. The leading-edge nose of the A340 formerly consisted of five aluminum parts. They have been replaced by two thermoplastic sections 8.2 and 10.5 ft long that together weigh 20% less than all five aluminum parts. Fokker molds the wing skin from Cetex "semi-preg" supplied by Ten Cate of Nijverdal, Netherlands. Cetex is glass fabric combined with a film of Fortron 0214C1 PPS from Ticona in Germany (U.S. office in Summit, N.J.). A special sizing on the glass helps it bond to the PPS when the semi-preg is consolidated in an autoclave autoclave Vessel, usually of steel, able to withstand high temperatures and pressures. The chemical industry uses various types of autoclaves in manufacturing dyes and in other chemical reactions requiring high pressures. at over 570 F. To make ribs and stiffeners for the leading-edge nose, five semi-preg plies plies 1 v. Third person singular present tense of ply1. n. Plural of ply1. are preconsolidated into 4 x 12 ft sheets. These are cut into blanks that are press molded and machined to final shape. The parts are then joined by resistance welding. Cetex composites of Fortron PPS and carbon-fiber fabric form the ailerons and the large keel beam of the new Airbus models. These are fabricated by Aerospatiale in France. |
|
||||||||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion