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.
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.
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.
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
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
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.
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.
What does CATNLF stand for? Is this related to the company Scaled Composites? How much fuel can this save? When will we see this on real planes?
NASA Successfully Flies Experimental Wing Design to Slash Fuel Use
Understanding the CATNLF Technology
The Test Configuration
Economic and Environmental Impact
AirPro News Analysis
Future Outlook
Frequently Asked Questions
It stands for Crossflow Attenuated Natural Laminar Flow. It is a wing design method that uses shape to prevent air turbulence.
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.
NASA estimates that applying this technology to large transport aircraft could reduce fuel consumption by up to 10%.
If testing is successful, the technology could be integrated into new commercial aircraft designs entering service in the 2030s.
Sources
Photo Credit: NASA