Daher and Hexcel Fast Cure RTM Cuts Aerospace Lead Times

This article is based on an official press release from Daher.

The commercial aviation sector is currently facing a massive backlog of aircraft orders, placing unprecedented pressure on the supply chain to produce composite parts faster than ever before. On March 3, 2026, French aerospace manufacturers Daher announced a significant industrial breakthrough designed to address this exact bottleneck. Through a collaborative trial with advanced composites company Hexcel, Daher successfully demonstrated a “Fast Cure” Resin Transfer Molding (RTM) process that drastically accelerates production rates.

According to the official press release, this new methodology allows aerospace-grade composite parts to be manufactured at high speeds without the traditional requirement of multiplying expensive, large-scale manufacturing equipment. By shifting the focus from expanding physical infrastructure to accelerating the chemical curing process, the partnership has provided a viable pathway for scaling up production for next-generation Short and Medium Range (SMR) aircraft.

The results of the trial are striking. Daher reports that the Fast Cure process can reduce series production lead times for specific components from 19 days down to just eight days, fundamentally altering the industrial math for aerospace Original Equipment Manufacturers (OEMs).

The Aerospace Production Bottleneck

The Demand for Composites

The aerospace industry relies heavily on composite materials, such as carbon fiber, to reduce overall aircraft weight, improve fuel efficiency, and lower carbon emissions. However, traditional composite manufacturing processes are notoriously slow and resource-intensive. Standard Resin Transfer Molding (RTM), which involves injecting liquid resin into a closed mold containing a dry fiber preform and heating it to polymerize, provides excellent automation and complex geometric capabilities, but it struggles to meet modern volume demands.

Scaling Challenges

Industry estimates indicate that some aircraft OEMs are targeting unprecedented production rates, occasionally aiming for up to 100 aircraft per month. Scaling up a standard RTM process to meet these high rates typically requires a brute-force industrial approach: investing in dozens of molds and multiple large heating ovens or massive autoclaves. This traditional method creates severe production bottlenecks and requires massive capital expenditure.

Daher and Hexcel’s “Fast Cure” Innovation

Accelerating the Chemistry

To break the cycle of simply buying more equipment to build more parts, Daher shifted its engineering focus to the manufacturing cycle itself. At the end of 2025, the company temporarily diverted production preforms and injection tooling from their standard serial production flow to test two specialized “Fast Cure” resins developed by Hexcel. According to the provided research data, Hexcel has spent recent years refining these rapid-cure, all-liquid format resins specifically to reduce takt time in high-rate aerospace manufacturing.

The trial utilized two specific Hexcel materials:

• HiFlow HF640F-2: A resin featuring a 15-minute polymerization (curing) time.
• HiFlow HF610F-2: A resin featuring a 30-minute polymerization time.

The Isothermal Process

The technological enabler of this successful trial was the implementation of isothermal injection. Daher’s engineers injected the resin at a constant temperature of 180 °C, followed immediately by a short curing phase and hot demolding. Hot demolding allows the composite part to be removed from the mold quickly, facilitating a rapid sequencing of operations that standard processes cannot match.

“By utilizing hot demolding and rapid curing, it becomes possible to process thermoset composites with the speed and agility typically reserved for thermoplastic materials.”
, Industry research summarizing the philosophical shift in Daher’s manufacturing approach.

Hard Data: Proving Industrial Scalability

Trial Results and Quality Assurance

Daher’s official release notes that the trial resulted in the successful manufacturing of six “production-type” parts, five utilizing the HF640 resin and one utilizing the HF610 resin. During the process, resin injection times were successfully kept below two minutes.

Crucially, speed did not compromise quality. The demonstrator parts were reintegrated into the plant’s standard downstream processes. Subsequent machining, ultrasonic non-destructive inspection, and geometric conformity checks revealed that the Fast Cure parts were entirely equivalent in quality to those manufactured using the slower, reference process.

Equipment and Lead Time Reductions

The most compelling data points from the trial relate to industrial scalability. At very high production rates, Daher projects that a standard process would require over 30 molds and five ovens. By implementing the Fast Cure process, tooling requirements could be divided by eight, requiring only two molds and two mini-presses to achieve the same output.

Furthermore, the overall lead time for series production of these components could be slashed from 19 days at full rate under the standard process to just eight days using the Fast Cure methodology.

AirPro News analysis

We view this development as a critical enabler for the broader aerospace supply chain. The global Resin Transfer Molding in Aerospace market was valued at approximately $1.73 billion in 2024 and is projected to grow at a Compound Annual Growth Rate (CAGR) of 9.2% through 2033, according to industry market-analysis. This growth is heavily dependent on the exact type of cost-efficient, high-performance manufacturing processes that Daher and Hexcel are pioneering.

Beyond raw speed, the Fast Cure process offers a vital strategic advantage: flexibility. Because the process relies on smaller, less permanent infrastructure, such as mini-presses rather than massive, fixed ovens, manufacturers gain the agility to reallocate equipment to different aircraft programs as market demands fluctuate. While the parts produced in this specific trial were non-airworthy demonstrators, this successful proof of concept lays the necessary groundwork for official certification and widespread industry adoption in the coming years.

Frequently Asked Questions (FAQ)

What is Resin Transfer Molding (RTM)?

RTM is a manufacturing process where liquid resin is injected into a closed mold containing dry fibers (like carbon fiber). The mold is then heated to cure the resin, creating a strong, lightweight composite part commonly used in aerospace.

How much faster is Daher’s Fast Cure process?

According to Daher’s trial data, the Fast Cure process reduces the series production lead time for specific components from 19 days to 8 days, while utilizing resins that cure in as little as 15 to 30 minutes.

Are these Fast Cure parts currently flying on commercial aircraft?

Not yet. The parts produced in this trial were non-airworthy demonstrators used to prove the industrial viability of the process. This successful trial paves the way for future official qualification for flight.

Sources:
Daher Official Press Release: Fast Cure & Furious
AirPro News Industry Research & Market Context Report