Vertical Aerospace Secures Syensqo Partnership for Full-Scale VX4 Production: Key Step Toward 2028 Certification

Syensqo Materials to Power Entire VX4 Structure: Accelerating Vertical’s Certification Ambitions

Vertical Aerospace has taken a major step forward in its industrialisation plans by selecting Syensqo as the long-term supplier for composite and adhesive materials across the entire structure of the VX4 aircraft. This collaboration follows years of joint prototype development and represents a critical piece in the VX4’s path to regulatory certification by 2028, ahead of planned commercial operations.

The VX4, a piloted four-passenger eVTOL (electric vertical take-off and landing) aircraft with zero operating emissions, is being built with global aerospace suppliers such as Honeywell and Aciturri. By tapping Syensqo’s high-performance composites—which have already been proven in earlier prototype phases—Vertical ensures that the aircraft will meet demanding durability and safety requirements necessary for frequent, high-cycle electric flight.

Industry-Leading Partnerships Signal Broad Commercial and Defense Potential

This agreement positions Vertical to leverage Syensqo’s decades of expertise supplying materials to top-tier civil and defense aerospace programs. The strategic use of Syensqo composites is expected to enhance the VX4’s lightweight design, structural efficiency, and resilience—all essential qualities for both commercial airlines and defense operators.

With the VX4’s airframe to be manufactured by Aciturri, the move further cements Vertical’s global supply chain and readiness to scale from prototyping to commercial manufacturing. Vertical’s pipeline currently includes around 1,500 VX4 pre-orders from customers across four continents, featuring prominent names like American Airlines and Japan Airlines. This signals strong market anticipation for certified eVTOL technology as urban air mobility markets evolve.

VX4 Unveiling and Certification Milestones on the Horizon

Vertical is scheduled to unveil its updated VX4 design in London on December 10, with new details expected on capacity, architecture, and certification readiness. This follows closely on the heels of the Syensqo deal and is part of a wider move to formalise all key supply relationships ahead of VX4 certification and launch.

A Closer Look: Advanced Materials Are a Decisive Advantage

Why is this materials deal so crucial? In high-frequency urban air mobility, lightweight composites determine the operational economics and lifecycle of each airframe. Every pound saved through advanced materials means longer range, higher payload, and more frequent flights before structural fatigue sets in. As Stuart Simpson, Vertical’s CEO, highlighted, Syensqo’s expertise “will help us deliver a resilient, agile aircraft as we progress toward commercial operations.”

For investors and industry watchers, the Syensqo partnership de-risks one of the more challenging aspects of electric aircraft certification: proving consistent safety and performance under repeated high-stress flight cycles. It also hints at broader ambitions beyond urban taxi services, with Vertical explicitly calling out defense applications as part of its VX4 roadmap.

Takeaway: Strategic Partnerships Are Shaping the eVTOL Race

This new phase for Vertical Aerospace underlines that success in electric aviation will be as much about forging the right industrial partnerships as about in-house technology. With Syensqo now confirmed for all-structure composite supply, the path to full-scale production and certification of the VX4 appears clearer—though not without the execution risks and regulatory hurdles that are endemic to pioneering new flight platforms.

As Vertical moves to unveil its updated aircraft design and solidify the last stages of its supply chain, investors and competitors alike will be watching closely: Will this integrated approach with best-in-class partners give the VX4 an edge as electric flight goes mainstream?

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