SAMPE Journal - July/August 2020 - 6
FEATURE
Photo Courtesy of Sonaca Group
COMPOSITE WING MOVEABLES
Out-of-Autoclave Process and Automation: A Successful
Path to Highly Integrated and Cost Efficient Composite
Wing Moveables
Thibault de Lumley, François Mathieu, Didier Cornet, Dimitri Gueuning, Nicolas Van Hille
SONACA Group Gosselies, Belgium
ABSTRACT
W
ith the continuous growth of the aviation market, it is mandatory to have manufacturing processes that
allow for cost reduction, high production rate and high performance structures enabling reduction of
fuel consumption and CO2 emission.
To that end, lots of out-of-autoclave technologies have been developed worldwide in the past years (RTM,
VARTM, LRTM, VARI, RFI, etc.) but only SQRTM (Same Qualified Resin Transfer Molding) enables to combine
a good control of process key parameters (volume content, pressure, thickness, temperature) from closed
mold capability and the use of high tough qualified prepregs. Starting the development of SQRTM in 2010,
SONACA was the first European company to introduce SQRTM in serial production with the flaps of the
Embraer E2 regional jets family.
Since then, the company has pushed the technology further, combining it with automation, and has
recently produced, first time right, a series of composite front & rear wing moveables with a very high level of
structural and functional integration, achieving high cost reduction and performance.
Comparing SQRTM to autoclave and RTM, the paper will demonstrate the gains achieved by SQRTM,
combined with automation and integration, through the recent manufacturing of several full-scale wing
moveables demonstrators, mechanical validations and economic analysis.
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SAMPE Journal - July/August 2020
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