JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 18

18

T

BUSINESS

Tool-side breathing allows BAE Systems to manufacture its new UAV
Niche market
PHILIP LUNN, EUROPEAN TECHNICAL MANAGER, AIRTECH ADVANCED MATERIALS GROUP

To ensure complete fibre wet-out and avoid any surface porosity the BAE Systems Engineers employed Toolside and Bagside breathing techniques with the Airtech Dahltexx semi-permeable membrane. Dahltexx About the author is a gas permeable fabric which due to Philip Lunn has 23 years of composite engineering its micro-porous experience, specializing in the field of vacuum bag structure will allow processing of composite materials for the last 12 the passage of air and years. The Airtech Advanced Materials Group has a restrict the flow of worldwide team of engineers who develop solutions resin. The liquid locally, applying and developing the materials and resin infusion was technique for a variety of processes and industries completed at room that include aerospace, wind energy and automotive.

Toolside and Bagside breathing are long established techniques. They are used to remove air and volatiles from a composite laminate while curing under a vacuum bag. BAE Systems has successfully employed Dahltexx during their recent UAV technology demonstrator project in support of the UK ASTRAEA programme.

he project, supported by Airtech Advanced Material Group, developed the use of Liquid Resin Infusion for manufacture of UAV structures. The ASTRAEA programme, part funded by the NWDA, aims to open the airspace to Unmanned Aircraft Systems. The programme included research into the qualification of affordable aircraft structures and was based on the HERTI UAV wing design.

groove the foam core to promote the flow of resin. In order to reduce resin weight and avoid restrictions on mechanical performance created by drilled and grooved core, this technique was not used on the project. The lack of resin flow promotion in the core material provided a challenge to ensure complete fibre wet-out over the entire part.
Pre-infused set-up

temperature with standard workshop vacuum connected through an Airtech RB451 vacuum reservoir. After infusion curing was completed at elevated temperature in an oven. Trial moulding made without Toolside or Bagside breathing resulted in surface porosity over the part surface. Subsequent mouldings with Dahltexx used for Toolside and Bagside breathing resulted in zero porosity over the tool side of the part and zero porosity around the complex features of the access panel and aileron features on the bag side of the part. These Wing skins then passed NDT examination to Eurofighter Typhoon standard with a Grade A acceptance criteria. The project delivered a reduction in labour of around 25%, reduction in raw materials of 30%, weight reduction of 30% and achieved 1.3 x ultimate load in static test. The success of the project has been to demonstrate affordable manufacturing of composite airframe structures with the LRI process employing Dahltexx for Tool side and bag side breathing, with opportunities for its use in present and future projects. More information: www.airtechonline.com www.airtech.lu www.baesystems.com

Construction of the wing skins features non-crimped bi-axially oriented carbon fabrics around a polymer foam core, infused with an epoxy resin system. A common infusion technique is to drill and

jec composites magazine / No61 November - December 2010


http://www.airtechonline.com http://www.airtech.lu http://www.baesystems.com

JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010

Cover
Contents
NEWS WORLDWIDE
Companies
Spirit AeroSystems and GOL Linhas Aereas Inteligentes enter into agreements
CTRM and CTL to commercialize composites testing in Asia
IDI Composites International announces installation of automated BMC production line
Umeco and Shanghai Leadgo Technology form a joint venture in China
SAIC awarded USD 11 million contract to deliver manufacturing facility for composite building materials
Airbus completes allocation of A350 XWB airframe work packages to China
Hexagon Composites signs new major contract with Daimler AG
National Aerospace Laboratories: incisive know-how
Innovations - Twelve companies rewarded by JEC and CCE for their composites innovations
Agenda of events
Equipment: Welding - Increasing bond strength and reducing defects in ultrasonic welding
BUSINESS
Market survey - Aerospace composites in Quebec: a wealth of players and R&D
AN INTERVIEW WITH JACQUES CABANA PRESIDENT & GENERAL MANAGER FDC COMPOSITES Inc.
Niche Market - Tool-side breathing allows BAE Systems to manufacture its new UAV
Trend - Composites and the carbon label
FEATURE - AUTOMOTIVE
Data - World ranking of manufacturers years 2009
Trend -Formula One experience to drive forward other industries
Application - BMW's MCV, the first mass produced car with a carbon passenger cell
An interesting solution for NASCAR race engine alternators
Prepreg materials investigated as a storage battery for future cars
Research & Development - Lamborghini prepares for the future with a new carbon-fibre research development
Environment - How adhesives reduce emissions, minimize waste and improve recycling
FRP recycling in Europe, North America and the Pacific Rim area
USER'S PLATFORM
Composites in the world - Agile as a snake for ice climbing
Recyclable emergency snow shovel
Superbus: an innovative public transport concept
Successful partners - Conseil & Technique, an SME dedicated to the development of new products
Application - Advanced graphite composite bipolar plate for fuel cells
KNOW-HOW
Software - four factors drive the development of superior wind blades
Simulation - Bespoke simulation for thermoplastic composite
Raw material - Latent acid catalysts for process control phenolics
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Cover
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 2
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 3
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 4
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 5
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Contents
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 7
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Hexagon Composites signs new major contract with Daimler AG
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - National Aerospace Laboratories: incisive know-how
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Innovations - Twelve companies rewarded by JEC and CCE for their composites innovations
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Agenda of events
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Equipment: Welding - Increasing bond strength and reducing defects in ultrasonic welding
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 13
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Market survey - Aerospace composites in Quebec: a wealth of players and R&D
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 15
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - AN INTERVIEW WITH JACQUES CABANA PRESIDENT & GENERAL MANAGER FDC COMPOSITES Inc.
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 17
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Niche Market - Tool-side breathing allows BAE Systems to manufacture its new UAV
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Trend - Composites and the carbon label
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 20
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 21
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 22
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 23
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Data - World ranking of manufacturers years 2009
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 25
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Trend -Formula One experience to drive forward other industries
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 27
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Application - BMW's MCV, the first mass produced car with a carbon passenger cell
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 29
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - An interesting solution for NASCAR race engine alternators
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Prepreg materials investigated as a storage battery for future cars
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Research & Development - Lamborghini prepares for the future with a new carbon-fibre research development
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 33
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Environment - How adhesives reduce emissions, minimize waste and improve recycling
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 35
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 36
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - FRP recycling in Europe, North America and the Pacific Rim area
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 38
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 39
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 40
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 41
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 42
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 43
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Superbus: an innovative public transport concept
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Successful partners - Conseil & Technique, an SME dedicated to the development of new products
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 46
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Application - Advanced graphite composite bipolar plate for fuel cells
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 48
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 49
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Software - four factors drive the development of superior wind blades
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 51
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 52
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Simulation - Bespoke simulation for thermoplastic composite
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 54
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 55
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 56
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - Raw material - Latent acid catalysts for process control phenolics
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 58
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 59
JEC COMPOSITES MAGAZINE - Issue #61 - November/December 2010 - 60
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