From the Sector

Hexcel Corporation hosted customers and public officials at its manufacturing site in the Midparc Free Trade Zone in Casablanca as the company broke ground on an expansion that will double the size of its existing engineered core manufacturing operation in Morocco to meet increased demand from aerospace customers for lightweight advanced composites.

The expansion, announced in September 2021, is expected to be completed in early 2023. The plant size will double to 24,000 square meters and employment is expected to increase from 120 to 400 people when the expansion is completed.

The Casablanca facility was built as part of Hexcel’s ongoing worldwide investment to create a diversified and robust global supply chain to support aerospace customers’ growing demand for engineered core. At the plant, Hexcel transforms lightweight honeycomb materials into engineered core parts to reinforce structures in the aerospace industry, particularly for aircraft, engine nacelles, and helicopter blades.

At the event, Thierry Merlot, Hexcel President – Aerospace for Europe, MEA/AP & Industrial, said, “We are pleased to celebrate this milestone with our customers and with the local community. The increased demand for lightweight, aerodynamic, advanced composites is growing, and our customers including Safran, Airbus, Airbus Atlantic, Boeing and Spirit AeroSystems have shown confidence in our ability to meet that demand. We appreciate the support from them as well as from the Ministry and everyone in the local community who continue providing us with the opportunity to further our investment in Morocco. The very successful establishment of Hexcel, the qualification of the workforce, the support of the state and the proximity of our customers have been real assets to launch this extension of our site in Casablanca.”

Anker, Devan and Shark Solutions teamed up to create the world’s first flame retardant aviation carpet using a recycled binder. Inspired by the knowledge and the needs of the aviation market, Anker motivated to achieve this new goal together. The PVB binder reuses laminated glass, from windshields and architectural/building glass, that otherwise would go to landfill.

German carpet manufacturer Anker is the first company to offer flame retardant carpets for aviation that are made with a recycled binder. In the search for a more sustainable binder, Anker discovered the PVB from Shark Solutions, a Danish cleantech company focused on giving a new life to post-consumer PVB. Properties of the aviation carpet with PVB as binder are the same as those of traditional non-sustainable carpets. The market has been looking for this type of solutions for a long time and market introduction has already started. Anker will introduce well known and special developed styles of aviation carpets with PVB and plan to take out traditional non-sustainable aviation carpets stepwise as soon as possible.

Shark’s PVB reuses laminated glass, from windshields and architectural/building glass, that otherwise would go to landfill. The non-toxic binder (no chlorine or phthalates) is fully recyclable and thus lives up to the future standards of the industry.

Textile innovator Devan Chemicals, known for its tailor-made flame retardant solutions, was called in to develop the flame retardant back coating, which is compliant with the Airbus and Boeing safety standards. “Based on many years of experience and competences in customer related developments, improving recycling rates is getting more and more important”, says Dirk Vanpachtenbeke, R&D manager Flame Retardants at Devan. “We are very proud that, together with Anker and Shark Solutions, we can contribute to this rising demand for products that meet the standards of a circular economy solution.”

In other news, Anker and Devan are already working on a new project, which includes Devan’s antimicrobial/viral-reducing technology. Recently, Devan published test results on the activity of their technology (BI-OME®) against SARS-CoV-2 and other viruses. According to independent testing, BI-OME is proven to achieve 99% and higher virus reduction, including of SARS-COV-2, on samples before washing and retains 98.5% even after 25 wash cycles. This technology has been recognized with the 2020 European Technology Innovation Leadership Award by Frost & Sullivan.

Because aircraft engine noise contributes to environmental noise around airports and populated cities, the aerospace industry has been working on new aircraft designs that will emit less noise so they can meet the ever-increasing requirements imposed on the industry to reduce noise pollution. Shielding and absorbing aircraft engine noise at the source represents one of the most effective ways to address this issue.

Hexcel, a global leader in advanced composite technology, has been at the forefront of acoustic technology development with its Acousti-Cap® broadband sound-reducing honeycomb, which enables engine designers to reduce the noise from takeoffs and landings yet without adding significant weight to the aircraft.
 
“Hexcel has continued investing in the evolution of Acousti-Cap® product technology to improve performance and reduce cost,” said Imad Atallah, Group Product Manager for Honeycomb at Hexcel. “Collaboration with industry leaders, including NASA and Boeing, has been key to that development,” he added.
 
The 2DOF (Two Degrees of Freedom) honeycomb core acoustic liner was introduced in 2008 and was subsequently adopted and installed on the Boeing 787 Dreamliner inlet, the Boeing 747-8 inlet and transcowl, and more recently on the Boeing 737 MAX inlet. This success enabled continued technology development and evolution in MDOF (Multi-Degrees of Freedom) where the acoustic septum is inserted in the honeycomb cell at different heights, as well as having two septums in honeycomb chambers. This type of technology allows for improved acoustic attenuation at a broader frequency range, as well as increased absorption.
 
“Hexcel’s Acousti-Cap® technology has shown great performance benefits over competing technologies from the beginning” said Clark Smith, Director of Technology -- Core Products at Hexcel. “We have continued to improve the technology through taking advantage of the single cell treatment concept, by adding capability that the industry was looking for,” he added.   
 
Hexcel’s latest Acousti-Cap® technology was recently tested in a joint NASA-Boeing flight test on a B737 MAX test platform, and the results beat expectations as reported by Aviation Week. Collaboration between Hexcel and NASA over several years on the development of MDOF technology led to the successful test results on this latest flight test.
 
The ability to attenuate a broader noise frequency range and increase acoustic absorption with the Hexcel liner has allowed an optimized design of the overall inlet that reduces drag and improves noise attenuation. Hexcel continues to invest in acoustic liner technology and is proud of the positive results of this NASA-Boeing flight test.