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Aerospace & Defense Thermoforming

Lightweight interior panels, ducting, equipment covers, and defense-grade thermoformed enclosures for aerospace programs.

BRT USA Engineering Team · Aerospace & Industrial Programs

Published July 9, 2026

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Aerospace thermoforming fills a gap between injection molding and hand-laid composites: large, lightweight plastic parts in moderate volumes with tooling that can be modified across program iterations. Defense programs — transport cases, equipment shrouds, and vehicle interior panels — benefit from the same advantages when six-figure injection molds are hard to justify.

Common aerospace thermoforming applications

  • Cabin interior panels, bezels, and trim components
  • Ducting, air distribution, and HVAC shrouds
  • Galley, lavatory, and overhead bin components (where thermoformed)
  • Cargo liners and equipment covers
  • Defense vehicle interior panels and equipment enclosures
  • Transport and deployment cases for sensitive equipment

Materials and flammability requirements

Lightweight aerospace plastic parts must meet stringent flammability and smoke-toxicity requirements in certified applications. Flame-retardant ABS, polycarbonate blends, and specialty sheets (including Kydex and FAA-tested grades) are selected per customer specification. Material qualification and traceability are documented for AS9100 supplier programs. Complex trim profiles and assembly interfaces are held with 5-axis CNC after forming.

Thermoforming vs other processes in aerospace

Thermoforming advantages

Large panels, moderate volume, fast tooling changes, lower capital vs injection molding, paintable textured surfaces.

Consider alternatives when

Primary structural load paths, extreme temperature exposure, or very high volumes favor composites, machining, or injection molding.

Defense program considerations

Defense thermoforming components often prioritize rugged impact resistance, chemical resistance, and rapid fielding over cosmetic perfection. HDPE, ABS, and TPO grades appear in vehicle interiors, UAV housings, and deployable equipment covers. Low-volume and prototype programs benefit from aluminum tooling that can be modified across design iterations. ITAR and export-controlled programs require documented supplier controls — discuss requirements during RFQ.

Quote an aerospace or defense thermoforming project

Share your material spec, flammability requirements, and volume — we will recommend process and tooling approach.

Request a Quote

Frequently asked questions

Can thermoformed parts meet FAA flammability requirements?

Yes, when specified flame-retardant materials rated for the application are used and the part design is validated per customer test protocols (e.g., FAR 25.853 for cabin interiors). Material and process documentation supports certification packages.

What sizes can aerospace thermoforming produce?

Heavy gauge forming platen size determines maximum part footprint. Large interior panels and duct sections are common. Our engineering team confirms forming area and draw depth for your geometry during quoting.

Is thermoforming used on primary aircraft structure?

Thermoforming is primarily used for interior, secondary structure, and equipment applications — not primary load-bearing airframe components. Composites and metals handle primary structure.

How does defense thermoforming differ from commercial aerospace?

Defense programs often accept wider cosmetic variation, emphasize durability and impact, and may have lower annual volumes with faster design change cycles — a good fit for thermoforming economics.