Technology & Innovation
NASA Tests CATNLF Wing Design to Cut Fuel Use by 10 Percent
NASA’s CATNLF wing design completed its first flight test, aiming to reduce fuel consumption by up to 10% for future commercial aircraft.
This article is based on an official press release from NASA.
NASA Successfully Flies Experimental Wing Design to Slash Fuel Use
On January 29, 2026, NASA achieved a significant milestone in sustainable aviation by conducting the first successful flight of the Crossflow Attenuated Natural Laminar Flow (CATNLF) wing design. According to the agency, the test took place at the NASA Armstrong Flight Research Center in Edwards, California, utilizing the agency’s F-15B Research Testbed aircraft. This Test-Flights marks the beginning of a comprehensive testing campaign aimed at validating aerodynamic technologies that could drastically reduce fuel consumption for future commercial airliners.
The experimental wing section, a 3-foot scale model, was mounted vertically underneath the F-15B’s fuselage to simulate flight conditions relevant to large transport aircraft. NASA reports that the primary objective of the 75-minute flight was to demonstrate that the specific wing geometry could maintain “laminar” (smooth) airflow over a swept wing, a feat that has historically been difficult to achieve without heavy mechanical systems.
This project is a key component of NASA’s Sustainable Flight National Partnership, which seeks to help the aviation industry reach net-zero carbon emissions by 2050. By refining the shape of the wing to passively control airflow, engineers hope to reduce drag significantly, offering a potential 10% reduction in fuel burn for long-haul jets.
Understanding the CATNLF Technology
Modern commercial jets utilize swept wings, angled backward from the fuselage, to fly efficiently at high transonic speeds. However, this design introduces a specific aerodynamic challenge known as “crossflow instability.” As air moves across a swept wing, it tends to become turbulent near the leading edge, increasing friction drag and fuel consumption.
According to NASA’s technical overview, the CATNLF design addresses this issue through geometry rather than mechanics. Instead of using heavy suction systems or active control devices to smooth the air, the CATNLF wing features a computer-optimized shape that manipulates air pressure distribution. This “dampens” crossflow instabilities, allowing the air to remain smooth and layered (laminar) over a much larger surface area.
The Test Configuration
For this specific test series, NASA did not fly a full-sized new aircraft. Instead, they utilized a “scaled wing” test article, a 40-inch tall model attached to the F-15B. This setup allows researchers to expose the model to the high speeds and specific angles of attack experienced by commercial airliners, gathering real-world data to validate computer simulations.
“It was incredible to see CATNLF fly after all of the hard work the team has put into preparing. Finally seeing that F-15 take off and get CATNLF into the air made all that hard work worth it.”
, Michelle Banchy, Research Principal Investigator, NASA Langley
Economic and Environmental Impact
The implications of this research extend well beyond aerodynamic theory. NASA estimates that if the CATNLF technology is successfully scaled up and applied to large, long-range aircraft like the Boeing 777, it could reduce fuel burn by up to 10%. In an industry where fuel costs are a primary operating expense, such an efficiency gain would translate to millions of dollars in annual savings per aircraft.
Furthermore, the environmental impact aligns with global climate goals. A reduction in fuel burn directly correlates to lower carbon dioxide emissions. Mike Frederick, the Principal Investigator at NASA Armstrong, emphasized the cumulative value of these improvements.
“Even small improvements in efficiency can add up to significant reductions in fuel burn and emissions for commercial airlines.”
, Mike Frederick, Principal Investigator, NASA Armstrong
AirPro News Analysis
We view the CATNLF project as a critical pivot point for “Green-Aviation.” While much industry attention is currently focused on radical propulsion changes, such as hydrogen or electric powertrains, those technologies remain decades away for long-haul wide-body aircraft. Aerodynamic refinements like CATNLF represent a “near-term” solution that can be integrated into the next generation of conventional tube-and-wing aircraft expected in the 2030s.
Unlike active laminar flow control systems, which require complex maintenance and add weight (often negating some fuel savings), NASA’s passive approach relies entirely on shape. If validated, this could allow Manufacturers to achieve double-digit efficiency gains without increasing the mechanical complexity of the airframe, a highly attractive proposition for airlines focused on reliability and maintenance costs.
Future Outlook
The January 29 flight was merely the first of up to 15 planned test flights. NASA has indicated that future sorties will push the test article to various speeds and altitudes to map exactly where and when the laminar airflow breaks down. These data points are essential for refining the design before it can be considered for full-scale commercial production.
The project involves collaboration between NASA Langley Research Center, which led the design refinement, and NASA Armstrong Flight Research Center, which is conducting the flight operations. The ultimate goal is to transition this technology to the commercial sector in time for the next generation of single-aisle and wide-body airliners.
Frequently Asked Questions
What does CATNLF stand for?
It stands for Crossflow Attenuated Natural Laminar Flow. It is a wing design method that uses shape to prevent air turbulence.
Is this related to the company Scaled Composites?
No. The term “scaled wing” in NASA’s reports refers to the size of the test model (a 3-foot scale model), not the aerospace manufacturer Scaled Composites.
How much fuel can this save?
NASA estimates that applying this technology to large transport aircraft could reduce fuel consumption by up to 10%.
When will we see this on real planes?
If testing is successful, the technology could be integrated into new commercial aircraft designs entering service in the 2030s.
Sources
Photo Credit: NASA
Technology & Innovation
CoolFly Urban Standing eVTOL Launched in Hangzhou China
CoolFly unveiled its Urban standing-position eVTOL in Hangzhou, targeting FAA Part 103 ultralight compliance for license-free personal flight.
CoolFly (Zhejiang) Aircraft Technology officially introduced its “Urban” standing-position electric vertical takeoff and landing (eVTOL) aircraft during a product launch event in Hangzhou, China, on August 13, 2026.
The Launch, detailed in a press release distributed via PR Newswire, also featured the company’s “Dream” series of seated personal aircraft and its proprietary NA80 flight control system. By targeting Federal Aviation Administration (FAA) Part 103 compliance for ultralight vehicles, CoolFly intends to offer personal flight capabilities without requiring operators to hold a pilot’s license or medical certification.
Standing-position eVTOL design and specifications
The Urban aircraft introduces a novel standing-position configuration to the emerging personal eVTOL market. To qualify under FAA Part 103 ultralight regulations, the aircraft must meet strict weight and performance limitations. According to Aerospace Global News, the Urban targets an empty weight of 110 kilograms (242 pounds).
Performance specifications released by the company indicate the Urban can reach speeds of 43 miles per hour (70 kilometers per hour) and achieve a flight time of 20 to 30 minutes on a single charge. The standing configuration is designed to minimize the aircraft’s physical footprint while providing an intuitive operator experience.
The Hangzhou launch follows the company’s North American debut at Experimental Aircraft Association (EAA) AirVenture Oshkosh on July 20, 2026. During that event, CoolFly Brand Marketing Lead Alex Chen highlighted the company’s strategy of bringing physical hardware to the public.
“This is our first AirVenture, and we wanted to bring an aircraft people can inspect for themselves. Dream ST is the model at the booth. Urban, our standing-position ultralight…” Chen stated.
Flight control technology and testing
Alongside the airframes, CoolFly detailed its NA80 flight control system. The architecture features dual-redundant flight-control units and triple-redundant inertial measurement units (IMUs) to maintain stability and control in the event of component failure.
The company reports accumulating 30,000 miles of prototype testing. This testing campaign included a January 6, 2026, concept debut at the Consumer Electronics Show (CES) in Las Vegas and a February 2026 cold-weather flight demonstration in Harbin, China.
CoolFly CEO Wayne Lee emphasized the company’s broader ambitions for the personal aviation sector during the launch cycle.
“We are not just manufacturing aircraft; we are architecting a new way of life,” Lee said. “We aim to make personal eVTOL as ubiquitous as bicycles.”
Insurance coverage and market rollout
Commercializing personal eVTOLs requires addressing liability and hull risks. On June 5, 2026, CoolFly announced it had secured an integrated domestic and international insurance solution. The policies are underwritten by PICC Property and Casualty and China Pacific Property Insurance, providing hull loss protection and liability coverage for manned operations of both the Urban and Dream models.
While the official press release dates the Hangzhou launch event to August 13, 2026, a post on CoolFly’s official website dated August 14, 2026, indicates the event took place on August 10, 2026. Delivery timelines also remain fluid. The company’s website lists conflicting estimated delivery dates of 2027 and 2028 for new Orders, while noting that production capacity for 2025 through 2027 is entirely sold out.
AirPro News analysis
CoolFly’s decision to pursue a standing-position aircraft is a direct response to the stringent weight limits of FAA Part 103. By eliminating the seat and reducing the overall cabin structure, the manufacturers saves critical pounds that can be reallocated to battery mass. Battery energy density remains the primary bottleneck for electric ultralights, making every pound of structural weight a penalty on flight time.
While Part 103 offers a clear regulatory path to market by bypassing formal type certification and pilot licensing, it restricts the aircraft to recreational use in uncongested airspace. We view the standing configuration as an innovative weight-saving measure, though it remains to be seen how the consumer market will respond to the ergonomics of standing during flight, even for the relatively short 20- to 30-minute endurance window.
Sources: CoolFly Aircraft
Photo Credit: CoolFly
Technology & Innovation
Rolls-Royce Pearl 15 Completes Full Hydrogen Flight Cycle Test
Rolls-Royce and TCS demonstrate 100% hydrogen combustion across a full simulated flight cycle using a modified Pearl 15 engine.
In a press release issued on August 14, 2026, TCS detailed its engineering contributions to the ground testing program conducted at the National Aeronautics and Space Administration (NASA) Stennis Space Center in Mississippi. The test, initially announced by Rolls-Royce and easyJet (U2) on April 29, 2026, utilized a modified Rolls-Royce Pearl 15 engine to prove that hydrogen combustion can safely power an aircraft from start-up through take-off, cruise, and landing.
Engineering the hydrogen flight cycle
The four-year hydrogen propulsion program aims to develop a zero-carbon alternative to conventional jet fuel. During the recent tests at NASA Stennis, the modified Pearl 15 engine reached full take-off power using solely hydrogen fuel. TCS provided integrated engineering, systems, and software expertise to support the milestone.
The firm assisted with fuel system and engine controls integration, hydrogen combustion analysis, and data analytics. Anupam Singhal, President of Manufacturing at TCS, stated that the achievement reflects the results of combining advanced engineering with digital capabilities and deep ecosystem collaboration.
Progression of the Rolls-Royce and easyJet partnership
The hydrogen testing initiative is a joint venture between Rolls-Royce and easyJet, supported by the UK Health and Safety Executive (HSE). The program previously reached a major milestone in 2022 when the companies successfully ran a Rolls-Royce AE 2100 engine on 100% green hydrogen at Boscombe Down in the United Kingdom. In July 2024, the partners announced plans to move to full-scale outdoor testing at the NASA facility.
The data gathered from the Pearl 15 simulated flight cycle will inform future engine designs. Adam Newman, Chief Engineer of the Hydrogen Demonstrator Programme at Rolls-Royce, noted that the rigorous testing approach yielded valuable insights into hydrogen behavior in modern gas turbines. Newman added that these learnings will support future propulsion innovations, including the Rolls-Royce UltraFan architecture.
AirPro News analysis
While Sustainable Aviation Fuel (SAF) remains the industry’s primary near-term tool for decarbonization, we view the successful full-cycle Test-Flights of the Pearl 15 as a strong indicator that direct hydrogen combustion is technically feasible for future Commercial-Aircraft. The aviation sector currently accounts for approximately 2 to 3 percent of global carbon dioxide emissions. Transitioning from ground tests to flight tests will require overcoming substantial hurdles in cryogenic fuel storage and aircraft redesign. However, validating the engine core’s ability to handle 100% hydrogen across varied thrust settings removes a major technical barrier for original equipment OEMs exploring zero-carbon narrowbody designs.
Sources: Tata Consultancy Services
Photo Credit: Rolls-Royce
Technology & Innovation
AutoFlight eVTOL Demo Flight in Astana Kazakhstan 2026
AutoFlight and AAAG completed a ton-class eVTOL demonstration in Astana during the Games of the Future 2026.
AutoFlight and its strategic partner Alatau Advance Air Group Ltd. (AAAG) successfully completed a demonstration flight of a ton-class eVTOL aircraft in Astana, Kazakhstan, on July 24, 2026. The flight positions the manufacturer to expand its footprint in the Central Asian market while showcasing the operational viability of its passenger aircraft.
Announced in a July 25, 2026 press release, the demonstration took place during the Games of the Future 2026. The event serves as a public platform to introduce Advanced Air Mobility (AAM) to the region, drawing an audience of 300 guests that included international diplomats and aviation regulators.
Demonstration at the Games of the Future
The AutoFlight demonstration was integrated into the broader schedule of the Games of the Future 2026, an international event featuring 800 competitors from 50 countries participating across eight disciplines. Following the July 24 flight, the eVTOL aircraft remains on display as part of the official public exhibition in Astana.
The flight was attended by several high-profile officials, underscoring governmental interest in AAM integration. Attendees included Kuanyshbek Yessekeyev, Assistant to the President of the Republic of Kazakhstan, alongside Han Chunlin, Ambassador of the People’s Republic of China to Kazakhstan, and Jung Ki Hong, Ambassador of the Republic of Korea to Kazakhstan.
Also present was Michael Daniel, Director General and Chief Executive Officer of the Aviation Administration of Kazakhstan (AAK). Daniel, a U.S. aviation veteran appointed to the AAK in May 2026, is tasked with leading the country’s civil aviation oversight and advancing international initiatives, including the development of AAM infrastructure and regulations.
Strategic partnerships and regional expansion
The Astana demonstration builds on AutoFlight’s previous operational testing in the region, which included its first eVTOL flight in Alatau City, Kazakhstan, in May 2026. The partnership with AAAG is designed to support the commercial deployment of AAM in the country and integrate electric air transport into the broader transportation ecosystem.
Sergey Khegay, Chief Executive Officer of AAAG, emphasized the regulatory and infrastructural groundwork currently underway in the country.
“The demonstration flights in Astana are not a standalone event but part of a systematic effort to introduce urban air mobility in Kazakhstan. The country is steadily building a comprehensive ecosystem: the necessary legislation has been adopted, infrastructure development is underway, and international cooperation with leading global companies continues to expand. Our goal is to make innovative air transport an integral part of Kazakhstan’s transportation system.”
AutoFlight views the Central Asian market as a prime environment for the deployment of its heavy-payload aircraft. Jia Xie, Senior Vice President of AutoFlight, highlighted the diverse use cases for the technology.
“We see tremendous potential for large eVTOL aircraft across Central Asia, from urban air mobility and regional transportation to aerial tourism, logistics and emergency response. These real-world applications demonstrate how Advanced Air Mobility can deliver safe, efficient and sustainable transportation solutions for the region.”
Broader market momentum in Asia-Pacific
The Kazakhstan demonstration precedes additional commercial agreements for AutoFlight in the broader Asian market. On August 12, 2026, the manufacturer signed a Memorandum of Understanding (MoU) with Whitesky Aviation, an Indonesian aviation service provider.
The agreement covers 60 AutoFlight V2000EM Prosperity passenger eVTOL aircraft destined for the Indonesian market. According to the company, the partnership with Whitesky Aviation will initially focus on providing premium VIP air taxi services in the region.
AirPro News analysis
AutoFlight’s strategy of targeting emerging markets like Kazakhstan and Indonesia highlights a distinct approach to AAM commercialization. While many Western eVTOL developers are focused on the highly congested and heavily regulated airspaces of the United States and Western Europe, AutoFlight is securing footholds in regions where regulatory frameworks are currently being built from the ground up.
The presence of AAK Director General Michael Daniel at the Astana demonstration is particularly notable. By engaging directly with newly appointed regulators who have explicit mandates to advance AAM, we see AutoFlight positioning itself to help shape the operational rules in these jurisdictions. If Kazakhstan and Indonesia can establish certification and operational pathways faster than the FAA or EASA, AutoFlight could achieve early commercial revenue while its competitors remain in the testing phase.
Sources: AutoFlight Press Release
Photo Credit: AutoFlight
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