21 May 2013
21 May 2013
GKN Aerospace says it has successfully concluded a composite manufacturing and assembly research programme using out of autoclave (OOA) processes and materials and shaped woven preforms.
The company says that these technologies are among those with the potential to transform the future manufacture and assembly of large composite aero-structures, and produce the performance gains the industry seeks in the next generation of airframes.
GKN state the OOA Composite Processing Phase II programme used OOA materials to design, develop and manufacture an affordable, lightweight, blended aircraft wing box featuring integrally stiffened skins, complex contours and four different stringer shapes. The manufacture of the parts used vacuum bag technology and the low cost tooling that becomes practicable when curing outside the extreme autoclave environment. The wing box was then assembled using fastener free, impregnated PI joints.
Stephen Grojean, Materials and Process Engineer, GKN Aerospace explains, “As an industry we are striving to improve airframe manufacture by reducing airframe cost and weight. To achieve these goals we are designing larger, lighter, more integrated aircraft structures. This programme addresses two of the major challenges we face - overcoming the limitations imposed by autoclave curing and proving effective fastener free, joining processes. The results we have achieved serve as a technology enabler allowing us to progress to next stage in composite wing structure and blended wing box manufacture.”
Photo provided by GKN.
Ceramicx, Ireland, has completed an 1800 m2 expansion to its production facility, doubling capacity for the manufacture of infrared heating equipment for the composites industry.
Solvay has inaugurated a new centre in Wrexham, UK, for manufacturing structural adhesives and surfacing films for the aerospace market.
The new laboratory facilities of recently founded TPAC (ThermoPlastic composites Application Centre) were opened by Anka Mulder, President of Saxion University of Applied Sciences, the Netherlands, on 14 September.