Natural Cork Reaches for the Stars: Amorim P50 Material Chosen for ESA’s DRACO Reentry Mission

MOZELOS, Portugal — As the global aerospace community intensifies its focus on orbital sustainability and safer spacecraft disposal, an unexpected natural material is finding a critical role at the edge of space. Amorim Cork Solutions announced that its specialized cork-based thermal protection material, known as P50, has been selected for the European Space Agency’s (ESA) upcoming DRACO mission. Scheduled to launch in 2027, the mission aims to capture unprecedented in-flight data on how satellites break apart during atmospheric reentry, a crucial step in mitigating the growing threat of space debris.

DRACO, which stands for Destructive Reentry Assessment Container Object, is designed with a deliberate and destructive purpose. Unlike traditional spacecraft engineered to withstand the brutal heat of atmospheric return entirely intact, DRACO is built to intentionally self-destruct upon reentry. As the spacecraft plunges back into Earth’s atmosphere, an integrated suite of approximately 200 sensors and four specialized cameras will meticulously document the structural breakup in real time. This wealth of data will allow scientists and engineers to refine complex computer models, ultimately guiding the development of safer, more sustainable spacecraft that leave little to no hazardous debris behind.

At the center of this high-stakes technological experiment lies a compact 40-centimeter survival capsule. While the outer structure of the DRACO spacecraft is meant to disintegrate completely, this inner capsule must endure extreme thermal and mechanical forces to safeguard the mission’s collected scientific telemetry. To ensure the capsule’s survival against temperatures that can reach thousands of degrees, its heat shield will rely on Amorim P50—an advanced, lightweight, cork-based ablative material specifically formulated for demanding aerospace environments.

Protecting what must survive

The journey of the DRACO spacecraft through the upper atmosphere will be characterized by violent aerothermal and mechanical stress. As the structural elements progressively peel away and vaporize, onboard systems will process streams of diagnostic data. The most critical insights gathered during the destruction phase will be rapidly transmitted and stored within the protected confines of the 40-centimeter survival capsule before the main body is entirely lost.

Ensuring that this capsule withstands the fiery descent is therefore paramount to the entire scientific endeavor. The von Karman Institute for Fluid Dynamics (VKI), an international organization entrusted with key aspects of the capsule’s design, aerothermodynamics, and thermal protection system, carefully evaluated various materials before selecting Amorim P50 for the heat shield.

P50 is engineered to function as an ablative thermal protection system. When exposed to extreme heat, the outer layers of the material absorb, dissipate, and shed thermal energy through phase changes and gas generation, effectively insulating the underlying structure from the devastating plasma environment of reentry. The selection of P50 for DRACO is the culmination of roughly 15 years of close technical collaboration between Amorim and the von Karman Institute, blending traditional natural resources with cutting-edge aerospace engineering.

"DRACO represents a remarkable engineering challenge: designing a spacecraft to break apart while ensuring that the knowledge generated during that process survives," said Sofia Paixão, Global Technical and Product Manager at Amorim Cork Solutions. "We are proud to see Amorim P50 contributing to that challenge and to a mission that could deepen our understanding of atmospheric reentry and help inform the design of future spacecraft."

Tested under reentry-like conditions

Before any spacecraft hardware leaves the ground for its 2027 launch, every critical component must undergo rigorous validation. For the DRACO survival capsule, this meant submitting its thermal protection system to demanding simulation environments at the von Karman Institute’s specialized research facilities.

In the lead-up to the mission, engineers utilized a half-scale version of the capsule, placing it directly into high-enthalpy plasma flows. These advanced testing chambers are designed to accurately replicate the severe aerothermal pressures, chemical compositions, and thermal loads that a spacecraft encounters during actual atmospheric reentry. By subjecting the half-scale model to these punishing conditions, the research team could closely evaluate the performance, ablation rate, and structural integrity of the P50 heat shield well in advance of assembling the full-scale flight hardware.

"We have extensively tested P50 within the DRACO programme," noted Dr. Bernd Helber, Research Expert in Aerothermochemistry at the von Karman Institute for Fluid Dynamics. "It is a highly insulating, robust, and predictable ablative material that is readily available on the commercial market."

This is not the first time the von Karman Institute has turned to Amorim P50 for experimental spaceflight. The material previously proved its mettle aboard QARMAN—the QubeSat for Aerothermodynamic Research and Measurements on AblatioN—a small satellite developed by VKI to gather valuable scientific data during its unpowered descent through the atmosphere. The success of that earlier endeavor laid a strong technical foundation for DRACO, paving the way for cork-based thermal protection to take on a much larger and more complex European mission.

Turning destruction into knowledge

Once DRACO completes its orbital mission and initiates its final descent, the sequence of events will unfold rapidly. As the spacecraft encounters the dense layers of the atmosphere, its onboard sensors and cameras will capture the violent mechanics of structural demise. By recording precisely how joints, panels, and internal frames fracture and melt under aerodynamic loads, the mission will solve longstanding questions in spacecraft design.

The empirical data returned by the surviving capsule will directly inform the European Space Agency’s ongoing initiatives in "Design for Demise." This design philosophy centers on building satellites and rocket bodies out of materials and architectures that are guaranteed to vaporize or break down completely during reentry, thereby eliminating the risk of surviving heavy components striking populated areas on Earth’s surface.

Ultimately, the insights gained from DRACO support the ESA’s overarching "Zero Debris" approach, a comprehensive policy initiative designed to significantly curb the proliferation of space debris in Earth and lunar orbits by the year 2030. As orbital congestion grows increasingly critical, understanding the precise physics of spacecraft destruction has become just as important as understanding how to launch them safely.

For Amorim Cork Solutions, the DRACO mission highlights an unexpected intersection between heritage material science and modern space exploration. By harnessing the natural thermal resilience of cork and refining it into a specialized aerospace ablative, the company continues to demonstrate that sustainable, commercially available solutions can play a vital role in answering some of the most complex engineering questions beyond our atmosphere.