This article is based on an official press release from Vertical Aerospace, supplemented by industry research and financial reports.

We are closely following the transition of the electric vertical take-off and landing (eVTOL) industry from the conceptual design phase into rigorous Certification and manufacturing. In a significant step toward commercialization, UK-based Vertical Aerospace (NYSE: EVTL) has officially selected Italian manufacturer Isoclima S.p.A. as the strategic supplier for its Valo aircraft transparency suite.

According to the company’s press release, Isoclima will be responsible for designing and manufacturing the full suite of transparencies for the Valo eVTOL, which includes the pilot and passenger canopies as well as all glazing systems. This long-term Partnerships is intended to provide supply chain stability and technical continuity as Vertical Aerospace pushes toward its targeted 2028 entry into commercial service.

Securing established aerospace suppliers is a critical de-risking strategy for eVTOL developers. Aircraft transparencies are considered certification-critical components by aviation authorities, requiring extensive testing against environmental stress, structural loads, and bird strikes. By partnering with a legacy manufacturer, Vertical Aerospace aims to protect its certification timelines with the UK Civil Aviation Authority (CAA) and the European Union Aviation Safety Agency (EASA).

The Valo Aircraft and Certification Pathway

Designing for Airline Operations

To understand the significance of the Isoclima partnership, it is helpful to look at the aircraft it will support. Unveiled in December 2025 as the successor to the VX4 prototype, the Valo represents Vertical Aerospace’s commercial-intent vehicle. Industry research indicates that the aircraft is designed to fly up to 100 miles at speeds reaching 150 mph, all while producing zero operating emissions.

Unlike some competitors that focus strictly on lightweight air taxis, Vertical Aerospace has heavily incorporated feedback from its Airlines partners into the Valo’s design. The aircraft features a premium four-seat cabin that can be expanded to six seats. Notably, it boasts the largest cargo hold in its class, capable of carrying six cabin bags and six checked bags. This specific design choice was requested by airline operators to better facilitate airport-to-city shuttle routes where passengers frequently travel with heavy luggage.

Isoclima’s Role in Safety and Testing

The selection of Isoclima brings vertically integrated manufacturing and testing capabilities to the Valo program. Based in Italy, Isoclima is a recognized global partner in aerospace transparencies, supplying certified glazing systems to major original equipment OEMs such as Agusta Westland. The company also provides safety-critical glass for civilian armored vehicles, defense applications, rail, and high-performance automotive brands like Mercedes-Benz and BMW.

In a company press release, Vertical Aerospace emphasized that early engagement with a proven supplier is essential. Isoclima’s in-house bird-strike testing and advanced modeling capabilities are expected to directly support the Valo program’s path to commercialization.

“Delivering Valo requires world-class partners with deep certification expertise and proven manufacturing capability. Isoclima brings both.”

“This collaboration reflects our commitment to enabling next-generation mobility through advanced, certified transparencies.”

Strategic Supply Chain Expansion

A Growing Roster of Aerospace Partners

The agreement with Isoclima formalizes another crucial segment of Vertical Aerospace’s core supply chain. According to the company’s statements, Isoclima joins a roster of established aerospace and industrial partners that already includes Honeywell, Aciturri, Evolito, and Syensqo. Relying on experienced industrial suppliers capable of scaling production is a cornerstone of Vertical’s strategy to bring a certifiable aircraft to market.

This supply chain will be tasked with fulfilling a substantial backlog of orders. Industry reports show that Vertical Aerospace currently holds approximately 1,500 pre-orders for the Valo aircraft across four continents. The customer base includes major operators such as American Airlines, Avolon, Bristow, GOL, Japan Airlines, and India’s JetSetGo, which recently pre-ordered 50 aircraft in February 2026. Furthermore, in March 2026, Vertical launched an automated battery pilot production line at its Vertical Energy Centre to build final packs for its seven upcoming certification aircraft.

Balancing Technical Milestones with Financial Realities

AirPro News analysis

While Vertical Aerospace is demonstrating strong technical momentum, evidenced by the unveiling of the Valo, the launch of battery production, and the solidification of its tier-one supply chain, the company is simultaneously navigating a challenging financial landscape typical of pre-revenue aviation startups.

Based on the company’s FY25 annual report released on March 24, 2026, Vertical held approximately $93 million in cash and cash equivalents at the end of 2025, with short-term liquidity reported at around $58 million. However, the company expects net cash outflows of approximately $195 million over the next 12 months as it aggressively ramps up investment in flight testing, certification, and manufacturing.

We observe a stark juxtaposition between the company’s robust order book of 1,500 aircraft and its tightening financial runway. Reflecting these capital requirements, Vertical’s stock (NYSE: EVTL) has faced recent headwinds, trading near its 52-week low of around $2.01 to $2.32, with a market capitalization hovering between $200 million and $235 million. To bridge the gap between its current cash reserves and its 2028 commercialization target, Vertical Aerospace will likely need to secure additional capital. The strategic partnership with Isoclima, while technically vital, also serves as a signal to investors that the company is systematically checking off the regulatory and manufacturing prerequisites required to bring the Valo to market.

Frequently Asked Questions (FAQ)

What is the Vertical Aerospace Valo?

The Valo is a commercial-intent electric vertical take-off and landing (eVTOL) aircraft developed by UK-based Vertical Aerospace. Unveiled in December 2025, it is designed to carry up to six passengers and their luggage on zero-emission flights of up to 100 miles at speeds of 150 mph.

Why are transparencies critical for eVTOL certification?

Aircraft transparencies, which include the pilot and passenger canopies and windows, must withstand extreme operational cycles, structural loads, and environmental stress. Crucially, they must pass stringent bird-strike resistance tests to meet the safety standards set by aviation authorities like the UK CAA and EASA.

When will the Valo enter commercial service?

Vertical Aerospace is currently targeting airliner-level safety certification and entry into commercial service by 2028.

Sources: Vertical Aerospace Press Release

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

In a closely coordinated chase across the sky, the aviation industry is taking aim at one of its most visible and complex climate challenges: condensation trails. While carbon dioxide emissions have long dominated sustainability discussions, recent scientific consensus highlights that non-CO2 emissions account for a significant portion of commercial aviation’s total climate warming impact.

To address this, Airbus, the German Aerospace Center (DLR), and engine manufacturer Pratt & Whitney have launched ECLIF-X (Emissions and Climate Impact of alternative Fuels – X). According to an official Airbus press release, this joint research campaign utilizes a “flying laboratory” to investigate the effects of fuel composition on aviation’s non-CO2 impact.

Running from 2025 to 2027, the ECLIF-X campaign captures real-time data on how low-sulphur and low-aromatic fuels interact with advanced engine combustors. At AirPro News, we recognize this initiative as a critical step toward understanding and mitigating the formation of climate-warming contrails before new environmental regulations take full effect.

The ECLIF-X Campaign: A High-Altitude Chase

The Emitter and the Sniffer

The methodology behind the ECLIF-X campaign involves two aircraft flying in tandem at cruising altitude. The “emitter” is an Airbus A321XLR test aircraft (registration MSN11058), powered by Pratt & Whitney PW1100G-JM engines. Research reports indicate these engines are equipped with the TALON-X rich-burn combustor, a technology specifically designed to reduce soot emissions. During the tests, the A321XLR is flown with three different types of fuel to compare their respective emission profiles.

Following closely behind is the “sniffer,” DLR’s heavily instrumented Falcon 20E research aircraft. Drawing on over 30 years of atmospheric research expertise, DLR scientists pilot the Falcon 20E directly into the exhaust wake of the A321XLR.

Flying at distances of just 50 to 300 meters, the Falcon 20E captures precise, real-time data on the physical and chemical properties of the emissions before they dissipate.

This proximity allows researchers to analyze the exhaust plume in real-time, providing unprecedented insights into the immediate atmospheric reactions triggered by different fuel blends.

Decoding the “Sticky Seed” Problem

How Contrails Form and Trap Heat

Contrails are line-shaped ice clouds that form when hot, humid engine exhaust mixes with cold, high-altitude air. Depending on atmospheric conditions, these contrails can persist and spread into cirrus clouds that trap outgoing infrared radiation from the Earth. According to industry research, studies suggest that non-CO2 effects could represent anywhere from 35% to roughly two-thirds of aviation’s total accumulated climate impact.

Airbus refers to the microphysics of contrail formation as the “sticky seed” problem. Conventional jet fuel contains aromatic compounds, which are the primary precursors for soot particles during combustion. These soot particles act as the foundational condensation nuclei, or “seeds,” for contrails. Furthermore, even trace amounts of sulphur in jet fuel result in the formation of sulphuric acid. This acid coats the soot particles, making them “sticky” and highly attractive to water vapor.

By utilizing fuels with low aromatics and low sulphur, such as highly refined Sustainable Aviation Fuels (SAF), engines produce significantly fewer soot particles and less sulphuric acid. Fewer seeds mean fewer ice crystals, resulting in contrails that are thinner, shorter-lived, or completely prevented.

Building on Previous Success

The current campaign builds upon the landmark ECLIF3 study, which concluded in 2024. Data from ECLIF3 proved that flying on 100% SAF reduced the number of contrail ice crystals by 56% and cut the overall climate-warming impact of contrails by at least 26% compared to conventional jet fuel.

Regulatory Urgency and Future Operations

EU ETS and NEATS Compliance

The ECLIF-X research arrives at a critical regulatory juncture. As of January 2025, the European Union Emissions Trading System (EU ETS) requires airlines to monitor and report their non-CO2 effects. With the first verified reports due in 2026, the industry faces immediate pressure to understand and quantify these emissions.

The introduction of the EU’s Non-CO2 Aviation Effects Tracking System (NEATS) means airlines are now legally required to track these metrics. Research initiatives like ECLIF-X provide the foundational science necessary to create accurate monitoring, reporting, and verification (MRV) models for the commercial aviation sector.

AirPro News analysis

We view the ECLIF-X campaign as a pivotal transition point for airline operations. Historically, the push for Sustainable Aviation Fuel has been framed almost entirely around lifecycle carbon reduction. However, the empirical data gathered by Airbus and DLR highlights a crucial dual benefit: SAF physically alters the clouds aircraft leave behind.

Beyond fuel certification, this research paves the way for “climate-friendly routing.” As airlines and meteorologists better understand exactly how and when contrails form, flight dispatchers could soon pair clean fuels with tactical flight path adjustments to avoid atmospheric regions prone to persistent contrail formation. This operational shift will likely become a standard practice as regulatory bodies tighten non-CO2 reporting requirements.

Frequently Asked Questions (FAQ)

• What is the ECLIF-X campaign?
  ECLIF-X (Emissions and Climate Impact of alternative Fuels – X) is a joint research initiative by Airbus, DLR, and Pratt & Whitney running from 2025 to 2027 to study how fuel composition affects contrail formation.
• Why are contrails a problem?
  Persistent contrails can spread into cirrus clouds that trap heat in the Earth’s atmosphere. Studies indicate these non-CO2 emissions account for 35% to two-thirds of aviation’s total climate impact.
• What is the “sticky seed” problem?
  Soot and sulphuric acid from conventional jet fuel create “sticky” particles that attract water vapor, forming the ice crystals that make up contrails. Low-sulphur and low-aromatic fuels reduce these seeds.
• When do airlines have to report non-CO2 emissions?
  Under the EU ETS, airlines were required to begin monitoring non-CO2 effects in January 2025, with the first verified reports due in 2026.

Sources: Airbus

This article is based on an official press release from Eve Air Mobility.

Eve Air Mobility has successfully demonstrated its full-scale electric Vertical Take-Off and Landing (eVTOL) engineering prototype to top Brazilian government officials. The flight took place at Embraer’s test facility in Gavião Peixoto, Brazil, marking a significant step forward in the company’s certification pathway for advanced air mobility solutions.

According to the official press release, the demonstration was attended by Brazil’s President Luiz Inácio Lula da Silva, alongside key ministers and aviation authorities. This high-profile event underscores the national and strategic importance of urban air mobility development within Brazil’s broader aerospace sector.

We note that this milestone follows the aircraft’s initial flight in December 2025. Since then, the prototype has been undergoing a rigorous flight test campaign designed to validate its systems, aerodynamics, and overall performance before moving toward formal certification.

Flight Test Campaign Progress

Key Performance Metrics

The company reports that the engineering prototype has completed 35 flights, accumulating nearly 1.5 hours of total flight time since its debut in December 2025. During these tests, the eVTOL aircraft reached an altitude of 140 feet above ground level (43 meters).

Operations to date have primarily focused on low-speed testing, reaching speeds up to 15 knots (approximately 28 km/h). Eve states that these parameters have allowed their engineering teams to validate critical components, including control laws, rotor aerodynamic efficiency, thermal behavior, and the propulsion model. The aircraft has also demonstrated consistent flight behavior during maneuvers involving simultaneous inputs across three axes.

Efficiency and Noise Reductions

Preliminary data from the test campaign indicates promising results for the aircraft’s core systems. According to the press release, both propulsion and battery performance have exceeded the company’s initial expectations.

Furthermore, noise levels, a critical factor for urban air mobility acceptance and regulatory approval, remain within the company’s projections. Eve notes that the acoustic footprint is significantly lower than that of conventional helicopters.

Strategic Implications and Future Steps

High-Level Government Support

The presence of President Lula da Silva highlights the strategic backing Eve Air Mobility enjoys in its home country. The event also drew attendance from Luciana Santos, Minister of Science, Technology and Innovation; Silvio Costa Filho, Minister of Ports and Airports; Tiago Chagas Faierstein, President of the National Civil Aviation Agency of Brazil (ANAC); and Aloizio Mercadante, President of Brazil’s National Development Bank (BNDES).

This coalition of technological, infrastructural, regulatory, and financial leadership suggests a coordinated national effort to support the certification and eventual commercialization of Eve’s eVTOL aircraft. Moving forward, Eve plans to continue expanding the flight envelope, which will include testing at higher speeds.

AirPro News analysis

We observe that Eve’s methodical approach to expanding its flight envelope, starting with low-speed, low-altitude validations, reflects a conservative and safety-first engineering philosophy typical of its parent company, Embraer. By securing visible support from ANAC and BNDES early in the full-scale testing phase, Eve is likely positioning itself favorably for both regulatory certification and future capital requirements. The emphasis on battery and propulsion efficiency exceeding expectations is a strong indicator that the fundamental architecture is sound, though higher-speed transition flights will be the next major technical hurdle for the engineering team.

“We are advancing with discipline and consistency in our flight test campaign, reducing risk and building the foundation for future certification flights. The results achieved in these first months following our initial flight in December 2025 reinforce our confidence in the aircraft’s architecture and our ability to deliver a safe, efficient and scalable solution for the urban air mobility market,” said Johann Bordais, CEO of Eve.

Frequently Asked Questions

When did Eve Air Mobility’s prototype first fly?

According to the company, the full-scale engineering prototype completed its first flight in December 2025.

How high and fast has the prototype flown so far?

As of March 2026, the aircraft has reached an altitude of 140 feet (43 meters) and speeds up to 15 knots (28 km/h) during its low-speed testing phase.

Who attended the recent flight demonstration?

The demonstration in Gavião Peixoto was attended by Brazilian President Luiz Inácio Lula da Silva, along with the Ministers of Science and Airports, the President of ANAC, and the President of BNDES.

Sources

• Eve Air Mobility Press Release