Technology & Innovation
Marshall Aerospace Delivers 6-DOF Model for Cavorite X7 VTOL
Marshall Aerospace delivered a flight dynamics model to Horizon Aircraft on June 9, 2026, advancing Cavorite X7 VTOL certification.

On June 9, 2026, Marshall Aerospace delivered a six degrees of freedom (6-DOF) flight dynamics and control model to New Horizon Aircraft Ltd. (Horizon Aircraft), marking a critical software milestone for the Cavorite X7 hybrid-electric vertical take-off and landing (eVTOL) program.
In a press release issued by Marshall Group, the company confirmed that the delivery of the steady level flight model will allow Horizon Aircraft to predict and optimize the aircraft’s response to control inputs. This Software variant is the first of several planned models designed to support the development of a safety-critical control system as the Cavorite X7 advances toward Certification.
Advancing the Cavorite X7 control systems
The 6-DOF model simulates the aircraft’s behavior across all rotational and translational axes. Marshall Aerospace’s Aero Engineering Services division developed the software following a competitive tender issued by Horizon Aircraft in 2025.
“The delivery of the first flight model for the Cavorite X7 marks a strong start to our Partnerships with Marshall Aerospace,” stated Tom Brassington, Chief Technology Officer at Horizon Aircraft. “Marshall’s engineers have integrated seamlessly into our development process, serving as an extension of our team and applying their expertise to developing one of the safest, toughest, and most performant modern VTOL aircraft.”
Mark Hewer, Aero Engineering Services Director at Marshall Aerospace, noted that the program demonstrates the company’s ability to translate engineering experience across complex challenges, including platform modifications and test beds. Hewer added that the company is prepared to support Horizon Aircraft through the safety-critical development work required for commercial and military aviation applications.
Development timeline and fan-in-wing technology
The Cavorite X7 is a dual-use hybrid-electric VTOL designed for both commercial and military operations. It features a patented fan-in-wing design that utilizes lift fans for vertical takeoff before transitioning to forward flight. According to the Manufacturers, the aircraft is projected to offer a 75% cost-efficiency advantage compared to conventional helicopters.
Horizon Aircraft validated the fan-in-wing technology during a successful transition flight of a large-scale prototype in May 2025. With the initial steady level flight model now delivered, Marshall Aerospace is developing additional flight regime models to support the ongoing certification process.
Horizon Aircraft expects to complete the assembly of the full-scale Cavorite X7 in late 2026. Flight testing of the full-scale aircraft is scheduled to commence in early 2027.
AirPro News analysis
We note that the partnership between an established aerospace engineering firm like Marshall Aerospace and an emerging VTOL developer highlights a maturing phase in the advanced air mobility sector. By outsourcing complex, safety-critical flight dynamics modeling to a legacy contractor, Horizon Aircraft reduces its developmental risk and leverages established certification experience. The successful integration of the 6-DOF model will be a crucial technical gate before the Cavorite X7 can safely transition from hover to forward flight in full-scale testing next year.
Sources: Marshall Group
Photo Credit: Marshall Group
Sustainable Aviation
Airbus Safran Technip Tereos Launch SAF Joint Venture France
Four European firms form Rebound JV to produce 160,000 tons of SAF annually at Dunkirk using Alcohol-to-Jet technology.

Four major European aerospace and energy companies announced an agreement on June 9, 2026, to establish a joint venture aimed at producing 160,000 tons of Sustainable Aviation Fuel (SAF) annually in Northern France. The partnership between Technip Energies, Airbus, Safran, and Tereos will create a new entity named Rebound, focusing on the Alcohol-to-Jet (AtJ) production pathway at the Port of Dunkirk.
According to a press release issued by Airbus, the initiative is designed to secure localized production of advanced ethanol from agricultural and forestry residues. The facility aims to address the European Union (EU) ReFuelEU Aviation regulation, which mandates a 6 percent SAF blending target by 2030 and a 70 percent target by 2050.
Scaling Alcohol-to-Jet technology
The Rebound facility is projected to be one of the largest SAF plants in Europe, targeting an annual output of 160,000 tons. The project covers the entire value chain, from securing agricultural feedstock to delivering the final aviation fuel to operators. The joint venture is expected to be finalized in the second half of 2026, subject to customary closing conditions and regulatory approvals.
Technip Energies Chief Strategy and Sustainability Officer Benjamin Lechuga described the AtJ pathway as a credible and scalable route to decarbonize the aviation sector. Tereos Chief Strategy Officer Jérôme Bos noted that the project aligns with efforts to create low-carbon industrial value chains utilizing agricultural production.
Regulatory mandates and European energy sovereignty
The regulatory framework established by the EU is expected to drive an eightfold increase in SAF demand between 2030 and 2050. In response to these requirements and global headwinds facing renewable energy, the Rebound joint venture is explicitly framed around strengthening European energy supply security and sovereignty.
“The Rebound project is a vote of confidence in SAF and in Europe’s ability to be a leader in the journey to decarbonise aviation,” stated Julie Kitcher, Chief Sustainability Officer and Communications at Airbus.
Safran Chief Sustainability Officer Nathalie Stubler added that developing SAF at scale is essential for the industry and that the project brings together necessary French and European expertise to support a competitive domestic fuel market.
AirPro News analysis
We view the formation of the Rebound joint venture as a direct industrial response to the aggressive timelines set by the ReFuelEU Aviation mandate. While aerospace manufacturers like Airbus and Safran do not traditionally produce fuel, their direct investment in the Rebound project highlights the critical bottleneck that SAF supply presents to their long-term decarbonization commitments. By partnering with energy and agricultural specialists like Technip Energies and Tereos, the aerospace sector is attempting to vertically integrate the SAF supply chain to ensure the 2030 and 2050 blending targets remain viable. The choice of the Alcohol-to-Jet pathway also indicates a strategic pivot toward mature, scalable technologies that can utilize existing European agricultural infrastructure without waiting for next-generation synthetic fuel pathways to mature.
Sources: Airbus
Photo Credit: Airbus
Sustainable Aviation
KLM Cityhopper Flies Hamburg on 5% Synthetic Kerosene Blend
KLM Cityhopper completed a commercial e-SAF flight to Hamburg on June 8, 2026, highlighting supply and cost barriers ahead of EU mandates.

KLM Cityhopper operated the first commercial passenger flight to Germany utilizing a 5 percent blend of synthetic kerosene on June 8, 2026, demonstrating the technical viability of power-to-liquid fuels while exposing severe supply constraints ahead of upcoming European mandates.
The flight traveled from Amsterdam Airport Schiphol (AMS) to Hamburg Airport (HAM). According to a press release issued by KLM Royal Dutch Airlines, the operation was a collaborative effort involving synthetic fuel producer INERATEC, blending partner MB Energy, and the destination Airports.
Advancing power-to-liquid aviation fuels
The aircraft was refueled at Schiphol with 200 liters of synthetic kerosene, commonly referred to as e-SAF. This volume constituted a 5 percent blend with conventional fossil kerosene. INERATEC manufactured the synthetic fuel, while MB Energy managed the blending process prior to refueling.
Synthetic kerosene offers a potential lifecycle emissions reduction of more than 90 percent compared to traditional fossil fuels. The power-to-liquid process utilizes renewable electricity to combine hydrogen and captured carbon dioxide into a drop-in aviation fuel.
INERATEC Co-founder and CEO Tim Boeltken emphasized the immediate readiness of the technology following the successful operation.
“We are ready to deliver. Today’s flight, with our Chief Commercial Officer Maximilian Backhaus on board during a regular passenger service, clearly shows that power-to-liquid fuels are safe, available, and already operationally viable today. This is just the beginning of many applications we will see this year across various sectors,” Boeltken stated.
Scaling challenges and European mandates
While the Hamburg flight proved the operational concept, KLM used the milestone to highlight the stark economic and logistical hurdles facing the industry. The European Union has established a sub-target mandate requiring a 1.2 percent e-SAF blend across the aviation sector by 2030.
Currently, synthetic kerosene production remains highly constrained. The financial barriers are equally significant. KLM reported that e-SAF currently costs four times as much as standard Sustainable Aviation Fuel (SAF) and eight times as much as conventional fossil kerosene.
KLM Royal Dutch Airlines CEO Marjan Rintel, who also chairs Project SkyPower, noted the discrepancy between regulatory goals and industrial reality.
“As CEO of KLM and chair of Project SkyPower, I believe e-SAF can make a real difference in making aviation more sustainable. KLM already pioneered a passenger flight on e-SAF in 2021, from Amsterdam to Madrid. Today’s flight to Hamburg once again shows that flying on synthetic kerosene is technically possible. But the reality is that the availability of e-SAF lags far behind ambition,” Rintel said.
AirPro News analysis
The most telling metric from the June 8 operation is not the successful flight itself, but the volume of synthetic fuel utilized. In 2021, KLM pioneered its first commercial e-SAF flight from Amsterdam to Madrid using 500 liters of synthetic kerosene. Five years later, the Hamburg flight utilized only 200 liters.
This 60 percent reduction in available test volume over a half-decade underscores the severe scalability crisis facing power-to-liquid fuels. We view the 2030 European Union mandate of a 1.2 percent e-SAF blend as highly vulnerable to supply chain realities. If a major flag carrier like KLM is explicitly highlighting the fact that current production is only a fraction of what is required, regulators may eventually be forced to reevaluate the timeline or heavily subsidize production to bridge the eight-fold cost gap with fossil fuels.
Sources: KLM Royal Dutch Airlines
Photo Credit: KLM Royal Dutch Airlines
Sustainable Aviation
American Airlines and Google Sign 35M-Gallon SAF Deal
American Airlines and Google agree to purchase 35 million gallons of SAF certificates, cutting nearly 300,000 metric tons of CO2e.

American Airlines Group Inc. (AAL) and Google have signed an agreement to purchase 35 million gallons of sustainable aviation fuel certificates over the next three years, marking the largest publicly announced transaction of its kind between an Airlines and a single corporate customer.
Announced on June 9, 2026, the partnership will facilitate the delivery of physical sustainable aviation fuel (SAF) to Chicago O’Hare International Airport (ORD) via Valero Marketing and Supply Company. The agreement is projected to reduce greenhouse gas emissions by nearly 300,000 metric tons of carbon dioxide equivalent (CO2e), allowing Google to offset the environmental impact of its employee business travel.
Scaling sustainable aviation fuel
The sustainable aviation fuel certificates (SAFc) model allows corporate customers to claim the environmental benefits of the fuel even if they do not physically consume it on their specific flights. Google will utilize the SAFc Registry to apply these emissions reductions against its corporate travel footprint.
“This strategic collaboration with American Airlines demonstrates how companies can work together to scale critical sustainability technologies. By entering into this long-term commitment, we are sending a vital demand signal to catalyze investment and bring more SAF to market,” said Kate Brandt, Chief Sustainability Officer at Google.
American Airlines stated the agreement is a critical step in reducing operational emissions and growing market demand for SAF. According to the airline, the aviation industry currently accounts for 2 to 3 percent of global carbon dioxide emissions. Google noted that SAF has the potential to reduce air travel emissions by up to 80 percent compared to traditional jet fuel.
Legislative incentives and prior collaborations
The transaction was facilitated by a recently enacted sustainable aviation fuel tax credit passed by the Illinois General Assembly. The legislation is designed to incentivize the delivery and utilization of SAF within the state.
“This agreement demonstrates how our nation-leading SAF tax credit can bring industry leaders together as we work toward a more sustainable future. Through partnerships with innovators like American Airlines and Google, we’re strengthening Illinois’ role as a global aviation hub and accelerating the transition to cleaner energy,” said Illinois Governor JB Pritzker.
This SAFc agreement follows a 16-week pilot program conducted by American Airlines and Google in 2025. That initiative, which also included Flightkeys and Contrails.org, embedded contrail avoidance models into flight planning and reportedly achieved a 62 percent reduction in contrail formation.
AirPro News analysis
We view this 35-million-gallon agreement as a significant indicator of how corporate sustainability budgets are increasingly subsidizing the premium cost of SAF. While 35 million gallons over three years represents a fraction of American Airlines’ total annual fuel consumption, long-term offtake agreements are essential for producers like Valero to secure financing for expanded refining capacity. The use of the SAFc Registry also highlights the growing maturation of the book-and-claim model, which decouples the environmental attributes of SAF from the physical fuel, solving logistical bottlenecks at airports that lack the infrastructure to receive blended SAF directly.
Sources: American Airlines
Photo Credit: American Airlines
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