NASA Advances Air Taxi Flight Control Systems with RAVEN SWFT Project

NASA’s Advanced Research Initiative to Revolutionize Air Taxi Flight Control Systems

NASA’s groundbreaking research into air taxi flight control systems represents a critical milestone in the development of urban air mobility, as the space agency conducts comprehensive wind tunnel and flight tests using scaled electric vertical takeoff and landing (eVTOL) aircraft at its Langley Research Center. The agency’s Research Aircraft for eVTOL Enabling techNologies Subscale Wind Tunnel and Flight Test (RAVEN SWFT) project employs a sophisticated 38-pound model aircraft with a six-foot wingspan and 24 independently actuated control effectors to generate publicly available, non-proprietary data that will benefit the entire aerospace industry. This initiative addresses the critical knowledge gap created by private companies keeping proprietary flight dynamics data internal, while the global air taxi market is projected to grow from USD 1.45 billion in 2024 to USD 4.78 billion by 2032 at a compound annual growth rate of 23.4%.

NASA’s commitment to open-source research, combined with partnerships with industry leaders like Joby Aviation and Wisk Aero, positions the agency as a catalyst for safe urban air mobility deployment, even as certification timelines for commercial air taxis face potential delays until 2027 or beyond. As the industry seeks to address urban congestion, environmental concerns, and the demand for efficient point-to-point transportation, NASA’s leadership in research and data transparency is shaping the future trajectory of advanced air mobility worldwide.

Historical Context and Evolution of Urban Air Mobility Research

The concept of urban air mobility (UAM) has evolved dramatically over the past decade, moving from science fiction to a legitimate transportation research priority. NASA’s involvement in eVTOL research can be traced back to collaborative efforts with industry partners as early as 2012, when the agency began working with companies like Joby Aviation on electric propulsion projects. The Vertical Flight Society’s 2014 workshops, co-organized with NASA and other industry groups, helped establish a professional community dedicated to exploring transformative vertical flight technologies.

These efforts built upon decades of NASA research in rotorcraft and vertical flight, but the integration of electric propulsion introduced new challenges in flight control, safety, and certification. NASA’s expertise in aerodynamics, flight controls, and systems engineering positioned the agency to contribute foundational research that supports both public and private sector innovation.

Today’s focus on UAM is driven by rapid urbanization and increasing congestion in major cities. Advanced air mobility offers the promise of bypassing ground traffic bottlenecks and reducing emissions through zero-emission electric aircraft. Government and private sector investments have accelerated as the potential for sustainable, efficient urban transport becomes clearer.

The RAVEN Program: NASA’s Comprehensive Approach

The RAVEN program is NASA’s flagship initiative for accelerating air taxi development through systematic flight research and open data sharing. The RAVEN SWFT project uses a 38-pound, six-foot wingspan research aircraft with 24 independently actuated control effectors, enabling researchers to study complex flight control scenarios that are impractical or risky at full scale.

Led by Siena Whiteside at NASA Langley, the project is designed to push aircraft to operational limits and gather data on failure scenarios, such as motor outages. Whiteside has highlighted NASA’s willingness to take on high-risk research, stating, “As we investigate these types of vehicles, we need to be able push the aircraft to its limits and understand what happens when an unforeseen event occurs… NASA is willing to take that risk and publish the data so that everyone can benefit from it.”

The RAVEN SWFT project began wind tunnel testing in 2024, progressing from controlled tunnel environments to tethered and then remote-piloted free flights. This phased approach ensures safety while maximizing data collection, with findings intended for public release to support the broader industry.

“NASA is willing to take that risk and publish the data so that everyone can benefit from it.”, Siena Whiteside, NASA Langley Research Center

Technical Specifications and Testing Methodologies

Beyond RAVEN SWFT, NASA’s research portfolio includes wind tunnel studies of tiltwing aircraft, full-scale crash testing, and advanced communication system evaluations. Tiltwing tests at Langley’s 14-by-22-Foot Subsonic Wind Tunnel use a seven-foot wing model with over 700 sensors to study propeller-wing interactions, generating detailed aerodynamic data.

Crashworthiness research involves dropping full-scale eVTOL structures from 35-foot gantries at the Landing and Impact Research Facility, simulating FAA certification requirements. These tests examine how energy-absorbing structures and battery systems perform in impact scenarios, providing crucial information for safety standards and design improvements.

NASA’s communications research, conducted at Glenn Research Center, explores the feasibility of using 5G cellular networks for air taxi command, control, and safety communications. This approach leverages existing infrastructure, with tests focusing on challenges like propeller modulation and signal reliability at low altitudes.

Market Analysis and Economic Implications

Market research indicates robust growth for the air taxi and advanced air mobility sectors. Estimates vary, but projections consistently show compound annual growth rates above 20% through the early 2030s. For example, Future Data Stats values the global air taxi market at USD 1.45 billion in 2024, with expectations to reach USD 4.78 billion by 2032. Other sources place the 2033 market as high as USD 7.74 billion, while the broader advanced air mobility market could reach USD 137.11 billion by 2035.

North-America leads the market, with the United States holding a dominant share thanks to its established aviation infrastructure and supportive regulatory environment. According to Fortune Business Insights, North America accounted for 38.1% of the global air taxi market in 2024, and Grand View Research reports the U.S. holds over 85% of the advanced air mobility market share.

This growth is fueled by urbanization, environmental concerns, and the need for efficient transportation solutions. However, the realization of these projections depends on overcoming technical, regulatory, and infrastructure challenges.

Strategic Industry Partnerships and Collaborative Research

NASA’s collaborative approach involves partnerships with leading industry players, including Joby Aviation, Wisk Aero, and MathWorks. The agency’s relationship with Joby Aviation began in 2012 and now includes research on noise, wind effects, and airspace integration. Joby’s eVTOL aircraft, delivered to Edwards Air Force Base in 2023, are used in NASA-AFWERX joint testing for air traffic management and operational procedures.

Wisk Aero’s partnership with NASA focuses on autonomous flight, with a five-year agreement targeting safe integration of autonomous aircraft under instrument flight rules. Erick Corona of Wisk described the collaboration as “a significant step forward for Wisk and the broader UAM industry,” citing NASA’s simulation capabilities as key to accelerating development.

MathWorks supports the RAVEN SWFT project by enabling rapid code iteration and real-time software updates, reducing turnaround time for flight tests and increasing research efficiency. These Partnerships ensure that NASA’s research benefits the entire industry, not just individual companies.

“NASA and AFWERX have an important, active collaboration on Advanced Air Mobility. This collaboration puts the best talent with the latest resources in the same place to accelerate the future of this industry.”, Davis Hackenberg, NASA

Regulatory Framework and Certification Timeline Challenges

Certification of eVTOL aircraft faces significant regulatory hurdles. Recent FAA communications and industry assessments suggest that the first type certification in the U.S. is unlikely before 2027. David Ison of the Air Mobility Research Group notes that key testing for vertiports and infrastructure will extend into 2026, with critical data for certification not expected until mid-2027.

The FAA is developing performance-based standards for eVTOL aircraft and vertiports, aiming to publish comprehensive guidance by summer 2027. However, the complexity of integrating new aircraft categories and urban infrastructure means that commercial deployment may be delayed until 2028 or later.

Certification challenges are compounded by the need for new operational procedures, pilot training standards, and safety oversight mechanisms. Interim guidance is being developed, but full regulatory clarity is still several years away.

Communication Systems, Safety Research, and Infrastructure Development

Reliable communication is essential for safe air taxi operations. NASA’s 5G network research demonstrates a pragmatic approach, using commercial cellular infrastructure to meet aviation needs. Testing has identified challenges like propeller modulation, which could impact signal reliability at the low altitudes where air taxis will operate.

Safety research includes crashworthiness testing and battery safety analysis. Full-scale crash tests at NASA’s Landing and Impact Research Facility provide data on energy absorption and passenger protection, informing both Manufacturers and regulators. Battery safety is a particular focus due to the fire risks associated with lithium-ion systems in electric aircraft.

Infrastructure development, such as vertiports and charging networks, is advancing in parallel with aircraft certification. The vertiport market is expected to grow significantly, with global investment in urban air mobility infrastructure projected to reach USD 10.7 billion by 2030. These developments are crucial for enabling commercial air taxi operations.

Conclusion

NASA’s research into air taxi flight control systems is laying the groundwork for a new era of urban mobility. Through the RAVEN SWFT project and complementary research in aerodynamics, safety, and communications, NASA is generating the open-source data and validation tools needed for safe, efficient air taxi operations. Strategic partnerships with industry leaders and technology providers ensure that the benefits of this research extend across the entire sector.

While the economic potential of urban air mobility is significant, with the market projected to grow rapidly over the next decade, regulatory and technical hurdles remain. NASA’s continued commitment to high-risk, high-reward research and data transparency will be essential in overcoming these challenges and enabling the safe integration of air taxis into the urban landscape.

FAQ

What is the RAVEN SWFT project?
The RAVEN SWFT project is a NASA initiative using a subscale eVTOL research aircraft with 24 independently actuated control effectors to gather flight data for air taxi development. The project aims to generate open-source data for the entire aerospace industry.

When will commercial air taxis be available?
Current estimates suggest that the first type certification of eVTOL aircraft in the U.S. may not occur before 2027, with commercial operations potentially starting in the late 2020s or early 2030s, depending on regulatory and technical progress.

How is NASA collaborating with industry?
NASA partners with companies like Joby Aviation, Wisk Aero, and MathWorks to conduct joint research on flight controls, autonomous operations, and rapid prototyping. These partnerships help accelerate industry progress and ensure research benefits are widely shared.

What are the main challenges facing air taxi deployment?
The primary challenges include regulatory certification, development of supporting infrastructure (vertiports, communication networks), safety validation, and integration with existing airspace and urban environments.

How big is the air taxi market expected to become?
Estimates vary, but the global air taxi market is projected to grow from USD 1.45 billion in 2024 to between USD 4.78 billion and USD 7.74 billion by the early 2030s. The broader advanced air mobility market could reach over USD 137 billion by 2035.

Sources

• NASA.gov