Technology & Innovation
Green Taxi Aerospace Aims for FAA Certification of Electric Taxi System by 2027
Green Taxi Aerospace targets 2027 FAA certification for its electric taxi system on Embraer E175, reducing fuel burn and weight penalties.

Reviving the Electric Taxi: Green Taxi Aerospace Targets 2027 Certification
The aviation industry’s pursuit of emissions-free ground operations has received a renewed push. According to reporting by Leeham News, U.S.-based startup Green Taxi Aerospace (also known as Green Taxi Solutions) is advancing its “Zero Engine Taxi” system, with a firm target to achieve FAA certification by 2027. The company is initially focusing its retrofit solution on the Embraer E175 regional jet, a strategic move designed to capitalize on the high-frequency nature of regional aviation.
While the concept of electric taxiing, moving aircraft on the ground without using main engines, has existed for over a decade, previous attempts have struggled with weight penalties and commercial viability. Green Taxi Aerospace claims to have solved these engineering hurdles, backed by significant partnerships with Delta Air Lines, Embraer, and StandardAero.
Technical Breakthroughs and Weight Reduction
The core of the Green Taxi system involves installing electric motors inside the aircraft’s main landing gear wheels. These motors are powered by the aircraft’s existing Auxiliary Power Unit (APU), allowing the pilot to control speed and direction from the cockpit without engaging the main jet engines.
According to the Leeham News report, a critical differentiator for Green Taxi is the dramatic reduction in system weight compared to legacy attempts. Early iterations of electric taxi systems, such as the now-cancelled Safran/Honeywell EGTS project from 2013, added approximately 1,000 pounds to the airframe. This weight penalty often negated fuel savings during flight.
In contrast, Green Taxi CEO David Valaer, a former F-16 pilot, emphasized the advancements in modern power electronics.
“Ten years ago, the system weight was significantly heavier… ours weighs 20 pounds [referring to electronics].”
— David Valaer, via Leeham News
By driving the main landing gear rather than the nose wheel, the system also aims to provide superior traction, particularly in adverse weather conditions like snow or ice.
Strategic Partnerships and Funding
Green Taxi Aerospace has secured high-profile industry support to validate its technology. Leeham News notes that Delta Air Lines is providing operational data and testing support through its “Sustainable Skies Lab.” Additionally, the company has partnered with Embraer for technical validation on the E175 airframe and StandardAero to lead the certification process.
Financial backing for the development includes a $5.6 million grant from the FAA’s Continuous Lower Energy, Emissions, and Noise (CLEEN) program, highlighting federal interest in technologies that reduce airport noise and carbon footprints.
The Business Case for Regional Jets
The company argues that regional jets represent the ideal launch market. Because aircraft like the E175 perform frequent short-haul flights, they spend a higher percentage of their operating time taxiing compared to long-haul widebody aircraft. Green Taxi projects the following operational benefits:
- Fuel Savings: A 5–20% reduction in fuel burn for short-haul flights.
- Cost Efficiency: Estimated savings of $250,000 to $350,000 per aircraft annually.
- Maintenance: Reduced wear on carbon brakes and lower risk of foreign object damage (FOD) to engines.
AirPro News Analysis
Why the “Main Gear” Approach Matters
We observe that Green Taxi’s decision to power the main landing gear, rather than the nose wheel, addresses a specific physics challenge that plagued competitors like WheelTug. The main gear carries approximately 90% of an aircraft’s weight. By applying torque there, the aircraft maintains better traction on wet or icy ramps, a critical requirement for airlines operating in winter climates. Furthermore, by targeting the retrofit market rather than waiting for new aircraft designs, Green Taxi opens an immediate addressable market of thousands of existing regional jets.
Timeline and Competitive Landscape
According to the timeline outlined in the report, Green Taxi plans to submit its certification plan to the FAA in late 2025, with a conforming prototype scheduled for assembly by mid-2026. If successful, the 2027 certification would place them ahead of other stalled initiatives.
The sector has seen high-profile failures, notably the Safran/Honeywell joint venture which ended in 2016 due to the aforementioned weight issues. Another competitor, WheelTug, utilizes a nose-wheel drive system but has faced repeated certification delays. Green Taxi aims to succeed by leveraging lighter modern electronics and a focus on regional aviation economics.
Sources
Photo Credit: Green Taxi Aerospace
Technology & Innovation
AURA AERO Acquires VoltAero Assets and Cassio S Demonstrator
AURA AERO acquires VoltAero’s patents, Cassio S demonstrator, and Rochefort facility after VoltAero loses key funding backer.

French aerospace manufacturer AURA AERO has acquired the strategic assets of hybrid-electric developer VoltAero, absorbing its patents, engineering expertise, and a 2,400-square-meter industrial facility in Rochefort, France.
Announced in a press release on June 23, 2026, the transaction consolidates France’s emerging Electric-Aviation sector by transferring VoltAero’s Cassio S flying demonstrator and years of hybrid-electric propulsion data to AURA AERO. The acquisition follows VoltAero’s recent struggles to secure funding after a key backer withdrew, according to reporting by Aviation Week.
Asset transfer and operational expansion
The Acquisitions provides AURA AERO with a complementary operational base on the French Atlantic coast. The 2,400-square-meter (approximately 25,000-square-foot) Rochefort facility features direct runway access, supplementing AURA AERO’s existing headquarters at Toulouse-Francazal Airport.
Along with the physical infrastructure, AURA AERO absorbs a portion of VoltAero’s staff and its prototyping capabilities. The most significant technological asset included in the deal is the Cassio S hybrid-electric demonstrator. Since flight testing began in 2019, the Cassio S has completed 270 test flights and covered 25,000 kilometers (approximately 15,500 miles).
Jérémy Caussade, President and co-founder of AURA AERO, outlined the strategic value of the acquisition in a statement provided to Aviation Week:
Acquiring VOLTAERO’s assets, and in particular the Cassio S, means integrating years of testing, data, and experience in hybrid-electric propulsion. This transaction serves as a catalyst for industrial, technological, and human growth. It strengthens our teams, expands our capabilities, and reaffirms our ambition: to build in France one of the world leaders in the aviation of tomorrow.
Financial divergence and program acceleration
The consolidation highlights the capital-intensive nature of advanced air mobility and hybrid-electric aircraft development. Founded in 2017 by former Airbus Chief Technical Officer Jean Botti, VoltAero had been actively seeking new investment to sustain its Cassio 330 production aircraft program. Aviation Week reported that the lack of funding following the withdrawal of a financial backer ultimately necessitated the asset sale.
Conversely, AURA AERO enters the acquisition well-capitalized. On April 17, 2026, the company announced a €50 million Series A funding round backed by Bpifrance, the European Innovation Council (EIC) Fund, and Safran Corporate Ventures. FLYING Magazine reported that AURA AERO also secured €120 million in subsidies from the French government, the state of Florida, and the EIC Fund.
AURA AERO plans to leverage the newly acquired hybrid-electric architecture experience to accelerate its own product lines. The company is currently developing the 19-seat Electric Regional Aircraft (ERA), the INTEGRAL trainer aircraft family, and the ENBATA surveillance Drones.
AirPro News analysis
We view this acquisition as a natural and necessary consolidation within the European hybrid-electric aviation market. The divergence in financial fortunes between AURA AERO and VoltAero underscores a broader industry trend where technical viability must be matched by aggressive, sustained capitalization. By absorbing VoltAero’s assets, AURA AERO eliminates a domestic competitor while acquiring a mature flight-test data package. The 270 flights logged by the Cassio S demonstrator represent a significant de-risking asset for AURA AERO’s ERA program, potentially shortening the development timeline for its own hybrid-electric propulsion systems.
Sources: AURA AERO
Photo Credit: AURA AERO
Technology & Innovation
Supersonic Flight Faces Financial and Regulatory Hurdles
AIAA Forum experts say commercial supersonic flight hinges on investment, FAA noise rules, and overland flight restrictions.

This article summarizes reporting by Aerospace America by Anne Wainscott-Sargent.
On June 22, 2026, aerospace leaders at the AIAA AVIATION Forum in San Diego concluded that while the physics of commercial supersonic flight are largely solved, the sector’s revival hinges on overcoming steep financial, regulatory, and environmental barriers. The consensus marks a maturation in the high-speed civil flight sector, shifting the primary engineering focus toward viable business models and noise compliance.
The panel featured representatives from The Boeing Company, Boom Supersonic, the Federal Aviation Administration (FAA), and the National Aeronautics and Space Administration (NASA). According to Aerospace America, the discussion highlighted that the next era of point-to-point high-speed travel depends entirely on securing long-term investment and navigating overland flight restrictions.
The financial hurdles of Mach 2
The cruise speed of modern Commercial-Aircraft like the Boeing 787 remains around Mach 0.85, a standard that has been static for decades. Pushing into the Mach 1.5 to Mach 2 range, identified by NASA as the ideal speed for civil supersonic flight, requires massive capital. Todd Magee, Chief Engineer of High-Speed Flight at Boeing, noted the difficulty of funding such leaps, stating that it is hard to find investors willing to wait a decade to see a profit.
To bridge this funding gap, developers are exploring alternative revenue streams. Boom Supersonic is adapting its Symphony engine core for use in terrestrial AI data centers. This strategy aims to accelerate engine development, compress the manufacturing learning curve, and generate the capital necessary to fund the Overture airliner program. David Lazzara, Lead Overture Engineer at Boom, emphasized the engineering advantages of designing the engine and aircraft concurrently, noting that relying on off-the-shelf propulsion forces compromises on both sides of the design.
Regulatory frameworks and the overland ban
Environmental and noise Regulations remain critical pacing items for the industry. The FAA faces a 2027 deadline to finalize new takeoff and landing noise rules for high-speed aircraft. Concurrently, the agency is drafting proposals to replace the existing ban on civil overland supersonic flights by adapting current transport and launch vehicle regulations to accommodate new high-speed concepts.
Historical precedent looms over these regulatory efforts. Florian Linke, Acting Director of the Institute of Air Transport at the German Aerospace Center (DLR), pointed out that while the Concorde was a technical triumph, it failed economically and offered limited societal benefits. Modern programs must prove they can operate profitably without unacceptable noise pollution or excessive environmental impact.
The path to the 2030s
If current development timelines hold, initial commercial supersonic services could launch by 2030. These early flights will be primarily restricted to over-water routes. Broader overland operations are projected for the early 2030s, pending the establishment of new International Civil Aviation Organization (ICAO) Standards. This expansion depends heavily on data from NASA’s X-59 experimental aircraft. Built by Lockheed Martin Skunk Works, the X-59 is currently flying to demonstrate low-boom technology designed to replace the traditional sonic boom with a quieter acoustic signature.
AirPro News analysis
We view Boom Supersonic’s pivot to the artificial intelligence data center market as a pragmatic approach to the notoriously capital-intensive aerospace development cycle. By monetizing the Symphony engine core outside of aviation, Boom reduces its reliance on traditional venture capital, which often lacks the patience for decade-long aerospace certification programs. However, the success of the broader supersonic sector still relies on the FAA and ICAO establishing clear, achievable noise standards. Without regulatory certainty regarding overland flights, the total addressable market for aircraft like Overture remains artificially constrained to transoceanic routes, limiting the economies of scale required to make supersonic travel accessible beyond the premium market.
Sources: Aerospace America
Photo Credit: AIAA
Technology & Innovation
Honeywell Aerospace Copper Bird eVTOL Flight Demonstrator
Honeywell Aerospace unveiled its Copper Bird eVTOL testbed in Arizona, integrating its full all-electric control chain for AAM validation.

On June 8, 2026, Honeywell Aerospace showcased its “Copper Bird” advanced flight demonstrator at its Deer Valley campus in North Phoenix, Arizona, providing a ground-based testing and demonstration platform for next-generation electric vertical takeoff and landing (eVTOL) aircraft systems.
Detailed in an official company publication, the Copper Bird serves as a fully integrated testbed for Advanced Air Mobility (AAM) technologies. The platform allows engineers, industry partners, and investors to validate the complete “stick-to-surface” all-electric control chain without leaving the ground. The name adapts the traditional aerospace “iron bird” concept, substituting “copper” in recognition of Arizona, the Copper State, where Honeywell Aerospace is headquartered.
Integrating the all-electric control chain
The demonstrator brings together several of Honeywell’s core AAM products into a single functional cockpit environment. Key integrated systems include the Honeywell Anthem flight deck, the company’s Compact Fly-By-Wire system, and Honeywell Assure electromechanical actuators.
By linking these components, the Copper Bird translates complex electronic processes into a tangible experience. Phil Robinson, Chief Technology Officer for Advanced Air Mobility at Honeywell Aerospace, described the setup as a critical tool for visualizing system integration.
“The Copper Bird is a real-time integrated aircraft testbed and ‘show and tell’ platform that demonstrates the complete stick-to-surface, all-electric control chain in one place,” Robinson stated.
Partner validation and public acceptance
The facility is actively used by conventional aircraft manufacturers and AAM developers to test system responses in simulated real-world conditions. Vertical Aerospace is among the partners that have piloted the demonstrator to evaluate the scalable Honeywell Anthem system, which is designed to support commercial air transport, business aviation, and military applications alongside the emerging eVTOL sector.
Jacob Maxfield, Senior Offering Manager for the Honeywell Aerospace AAM team, noted that the platform proves the maturity of the company’s hardware and software. Guests can sit in the cockpit and fly the system to observe how an aircraft would respond to control inputs.
“It allows us to demonstrate how our flight control computers, actuators, inceptors and displays are fully integrated, mature and ready to support next generation aircraft,” Maxfield said.
Robinson also emphasized the importance of the demonstrator in building public trust, noting that people need to see the company applying the same rigor and safety standards to AAM as it does to traditional aircraft.
AirPro News analysis
We view the Copper Bird as a strategic asset for Honeywell Aerospace as it competes for market share in the crowded AAM supplier ecosystem. While individual components like electromechanical actuators and fly-by-wire computers are critical, the ability to demonstrate a unified system architecture provides a distinct advantage when courting eVTOL startups. Many of these new entrants lack the legacy systems integration experience of traditional airframers. By offering a pre-integrated package, Honeywell reduces the development risk and certification burden for its partners. This ground-based validation is essential for building regulator confidence before these novel aircraft transition to flight testing.
Sources: Honeywell Aerospace
Photo Credit: Honeywell Aerospace
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