Indestructible Paint helps to protect iconic aviation

The performance paint and coatings expertise at Indestructible Paint has now extended into one of the most celebrated sectors of the industry.

The Birmingham-based company has developed coating solutions for a series of propeller blades that have been fabricated for the famous Spitfire – meeting specific challenges associated with the wooden material used.

Hercules Propellers, who have a leading reputation for the production of propeller blades for the leisure aircraft sector, have been commissioned to manufacture propellers as part of a Spitfire restoration programme being undertaken by the Biggin Hill Heritage Hangar.

The need to ensure each blade is fully protected from the rigors of operation and the elements has prompted the organisation to make the most of Indestructible Paint’s expertise.

John Bourke, technical sales manager at Indestructible Paint, commented: “Spitfire propellers are manufactured from hydro lignum – an extremely dense wood substrate that requires the protective coating to bond and perform to the highest standard,” he says.  “We have therefore worked with Hercules Propellers to design a coating system that comprises a two-pack epoxy base coat, two-component erosion coating, yellow tipping paint and a clear semi-matt polyurethane lacquer.“

The coatings were applied following the shaping of the propellers from timber in a dedicated machining centre installed by Hercules Propellers at its premises in Stroud.  Trials were completed on a non-flight prototype to prove the system before the first set of four propellers for flight was completed.

“There can be few aircraft that are better recognised or more iconic than the legendary Spitfire which has a history that will be acknowledged by millions of people in this country and much further afield,” added Brian Norton, Indestructible Paint’s managing director. “We have extensive experience in developing coatings that are used in aerospace manufacturing and maintenance worldwide so are delighted to apply this knowledge to a dedicated and significant part of the industry.

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