Military Technology
Aurora Flight Sciences Advances X-65 with Active Flow Control Technology
Aurora Flight Sciences and DARPA progress on X-65, an aircraft using Active Flow Control to replace traditional control surfaces, targeting 2027 flight.
The Evolution of Flight Control: X-65 and the Shift to Active Flow Control
The aviation industry is currently witnessing a significant shift in aerodynamic design, moving away from the mechanical control surfaces that have defined flight for over a century. On November 20, 2025, Aurora Flight Sciences, a Boeing company, announced a critical milestone in the development of the X-65. This experimental military aircraft, developed under the Defense Advanced Research Projects Agency (DARPA) CRANE program, represents a fundamental departure from traditional aircraft architecture. Rather than relying on external moving parts like rudders, flaps, and ailerons, the X-65 is designed to maneuver using bursts of compressed air, a technology known as Active Flow Control (AFC).
The significance of this development lies in its potential to alter the basic mechanics of flight. Since the Wright brothers, aircraft have been steered by physically altering the shape of the wing or tail to change airflow. The X-65 program aims to prove that this can be achieved more efficiently and stealthily through pneumatic systems. As the program progresses, the focus has shifted to the manufacturing phase, with substantial hardware taking shape at production facilities. This transition from digital design to physical assembly marks a pivotal moment for the Control of Revolutionary Aircraft with Novel Effectors (CRANE) program.
We are observing a careful yet ambitious timeline for this project. While the engineering challenges inherent in such a novel design have necessitated schedule adjustments, the commitment to validating AFC technology remains steadfast. The recent updates from Aurora Flight Sciences provide a transparent view into the production status, the restructuring of the program’s investments model, and the technical specifications that define this unique X-plane. Understanding these details offers insight into the future of military and potentially commercial aircraft.
Manufacturing Milestones and Program Restructuring
According to the latest reports from November 2025, the manufacturing of the X-65 has reached an advanced stage. The aircraft’s fuselage is currently being assembled at Aurora’s facility in Bridgeport, West Virginia. Projections indicate that the fuselage is on track for completion in January 2026. Alongside the main body, fabrication of the wing assemblies and engine diffusers is proceeding, while critical propulsion and AFC system components have already been received and are prepared for integration. This synchronization of component manufacturing suggests that despite broader timeline shifts, the physical construction is proceeding with momentum.
The program has also undergone a strategic restructuring to ensure its viability amidst rising costs and technical complexities. In August 2025, DARPA and Aurora Flight Sciences finalized a new agreement to co-invest in the completion of the X-65. This shift from a purely government-funded model to a shared investment structure highlights the industry’s stake in the success of this technology. It acknowledges the resource-intensive nature of developing an entirely new method of flight control and secures the necessary capital to push the project through its ground testing and flight demonstration phases.
Regarding the timeline, the schedule has been adjusted to accommodate these changes and the rigorous demands of safety and systems integration. Following the targeted completion of the fuselage in early 2026, the program is scheduled to move into ground testing later that year or in early 2027. Consequently, the first flight of the X-65, originally anticipated earlier, is now projected for late 2027. This revised schedule reflects a pragmatic approach to experimental aerospace development, prioritizing system reliability over speed.
“We’re excited to continue our longstanding partnership with DARPA to complete the build of the X-65 aircraft and demonstrate the capabilities of active flow control in flight. The X-65 platform will be an enduring flight test asset, and we’re confident that future aircraft designs… will be able to leverage the underlying technologies.”, Larry Wirsing, VP of Aircraft Development at Aurora Flight Sciences.
Technological Innovation: Active Flow Control
The core innovation driving the X-65 is Active Flow Control (AFC). In a standard aircraft, the pilot steers by moving hinged panels on the wings and tail. These movements create drag and require heavy, complex hydraulic systems. The X-65 replaces these mechanical surfaces with 14 specialized “effectors” embedded across the flying surfaces. These effectors release pressurized bursts of air to manipulate the aerodynamic flow over the wings, effectively changing the air pressure and flow direction to control pitch, roll, and yaw.
The implications of this technology extend beyond simple maneuverability. By eliminating the gaps, hinges, and actuators associated with moving control surfaces, aircraft designers can create smoother, more seamless wing structures. This reduction in mechanical complexity translates to lower weight and reduced drag, which can improve fuel efficiency and range. Furthermore, the absence of external moving parts significantly reduces the aircraft’s radar cross-section, offering inherent stealth advantages that are highly valuable for military applications.
To validate this technology safely, the X-65 is being built with a “training wheels” philosophy. The aircraft is equipped with both traditional mechanical controls and the new AFC system. In the initial phase of flight testing, the aircraft will utilize standard flaps and rudders to establish baseline performance and ensure safety. Once the flight envelope is secured, the mechanical controls will be locked down, and the aircraft will rely solely on the air-burst effectors. This phased approach allows engineers to isolate the performance of the AFC system and prove its viability as a primary control method.
Specifications and Operational Context
The X-65 is a substantial unmanned system designed to operate at speeds and altitudes relevant to real-world applications. The aircraft features a wingspan of 30 feet (approximately 9 meters) and a gross weight of 7,000 pounds (approximately 3,175 kilograms). It is powered by a single turbojet engine and is capable of reaching speeds up to Mach 0.7 (approximately 537 mph). The design utilizes a modular “diamond-like” wing shape, which allows for outboard sections to be swapped. This modularity ensures that the X-65 can serve as a long-term testbed, testing different AFC configurations in the future without requiring a completely new airframe.
It is important to distinguish the X-65 CRANE program from other ongoing developments at Aurora, such as the SPRINT program. While both involve advanced aerodynamics, the SPRINT program focuses on “fan-in-wing” technology for vertical takeoff and landing. The X-65 is distinct in its singular focus on replacing control surfaces with pneumatic steering. This distinction is vital for understanding the specific engineering goals of the CRANE program, which is to validate AFC for broad adoption across future aircraft generations.
“Demonstrating active flow control in flight opens new design and production possibilities for both military and commercial aircraft.”, Christopher Kent, DARPA CRANE Program Manager.
Future Implications and Conclusion
The progress of the X-65 signals a potential transformation in aerospace engineering. If the flight tests scheduled for late 2027 are successful, the data gathered could lead to a new generation of aircraft that are lighter, stealthier, and more efficient. The collaboration between DARPA and Aurora Flight Sciences demonstrates a shared commitment to overcoming the technical hurdles associated with radical innovation. By co-investing in this technology, both parties are betting on a future where the moving wing flap becomes a relic of the past.
As the fuselage nears completion in West Virginia, the industry watches closely. The successful implementation of Active Flow Control would not only enhance military capabilities through improved stealth and performance but could eventually filter down to commercial aviation, offering fuel savings and design efficiencies. The X-65 serves as the critical bridge between theoretical aerodynamics and practical, operational reality.
FAQ
What is the X-65?
The X-65 is an experimental unmanned aircraft developed by Aurora Flight Sciences and DARPA to demonstrate Active Flow Control (AFC) technology, which replaces traditional moving control surfaces with bursts of compressed air.
When is the X-65 expected to fly?
Following schedule adjustments, the first flight of the X-65 is currently projected for late 2027, with ground testing expected to begin in late 2026 or early 2027.
How does the X-65 steer without moving parts?
It uses 14 “effectors” embedded in the wings that release pressurized air bursts. These bursts manipulate airflow over the aircraft surfaces to control pitch, roll, and yaw, replacing the need for flaps and rudders.
Sources: Aurora Flight Sciences
Photo Credit: Aurora
Military Technology
Aurora Flight Sciences Advances X-65 with Active Flow Control Integration
Aurora Flight Sciences progresses X-65 development with fuselage arrival, integrating Active Flow Control for DARPA’s CRANE program, targeting late 2027 flight.
This article is based on an official press release from Aurora Flight Sciences, supplemented by industry research data.
Aurora Flight Sciences, a Boeing subsidiary, has announced a critical milestone in the development of the X-65 experimental aircraft. According to an official company update, the X-65 fuselage has officially arrived at the company’s Virginia facility, marking the transition from major structural assembly to the final systems integration phase. Our teams at AirPro News have been tracking this development, which represents a significant step forward for the Defense Advanced Research Projects Agency (DARPA) CRANE program.
The CRANE (Control of Revolutionary Aircraft with Novel Effectors) program is designed to test Active Flow Control (AFC) technology. This experimental approach aims to replace traditional mechanical flight control surfaces, such as flaps, rudders, and ailerons, with pressurized jets of air. The successful integration of these systems could fundamentally alter aircraft design paradigms that have been in place since the dawn of aviation.
While the fuselage undergoes electrical, propulsion, and AFC systems integration in Virginia, Aurora Flight Sciences confirmed that manufacturing of the wing and tail assemblies is advancing concurrently at their facility in Bridgeport, West Virginia. Following a series of program restructurings, the X-65 is currently slated for its first flight in late 2027.
The Shift to Active Flow Control
Since the Wright Brothers’ first flight, aircraft have relied on moving external panels to steer and maintain stability. The X-65 demonstrator seeks to break this century-old paradigm. Based on DARPA program outlines, the aircraft utilizes 14 distinct effectors embedded across its flying surfaces. Instead of relying on mechanical hinges, these effectors emit steady bursts of pressurized air generated by an onboard auxiliary power unit.
How the X-65 Implements AFC
By manipulating the airflow over the aircraft’s surface, these pressurized jets create aerodynamic “speed bumps” that alter the plane’s pitch, roll, and yaw. To minimize risk during initial testing, the X-65 will be equipped with both conventional moving control surfaces and the experimental AFC actuators.
“The X-65 conventional surfaces are like training wheels to help us understand how AFC can be used in place of traditional flaps and rudders.”
This phased testing strategy, as described by former DARPA CRANE Program Manager Dr. Richard Wlezien, ensures a safe baseline. During successive flight tests, the mechanical controls will be selectively locked down until the aircraft is maneuvering entirely via Active Flow Control.
Manufacturing Progress and Revised Timelines
The transition of the fuselage to the Virginia facility represents a tangible shift from theoretical design to physical integration. However, the journey to this stage has required significant program adjustments. Originally scheduled to roll out and fly in 2025, the X-65 timeline was officially revised to a late 2027 first flight target.
Overcoming Supply Chain and Budget Hurdles
Industry research and DARPA statements indicate that the delay was driven by a combination of engineering challenges, supply chain bottlenecks, and rising costs. DARPA CRANE Program Manager Chris Kent noted the realities of the manufacturing environment.
“We were working through several engineering issues as well as honest-to-goodness supply chain issues,” stated Kent regarding the revised timeline.
To keep the program on an executable path, DARPA and Aurora Flight Sciences finalized a “co-investment” agreement in August 2025. Under this restructured framework, Aurora is investing its own capital to cap costs for the U.S. government. According to Department of Defense FY2026 budget estimates, Aurora was initially awarded a $42 million contract in January 2023. DARPA’s spending on the CRANE program was recorded at $38.3 million in FY2024 and $23.9 million in FY2025, with a projected $4 million allocated for FY2026.
Aircraft Specifications and Future Implications
The uncrewed X-65 is designed to provide flight-test data that is immediately relevant to real-world aircraft design. According to published program specifications, the aircraft features a 30-foot wingspan, a gross weight exceeding 7,000 pounds, and a distinctive, modular diamond-like wing shape. It is capable of reaching speeds up to Mach 0.7 (approximately 463 knots). The modularity of the wings allows sections and AFC effectors to be easily swapped out for future aerodynamic testing.
“The X-65 platform will be an enduring flight test asset, and we’re confident that future aircraft designs… will be able to leverage the underlying technologies,” noted Larry Wirsing, VP of Aircraft Development at Aurora.
AirPro News analysis
We view the successful implementation of Active Flow Control as a potential watershed moment for both military and commercial aviation. By eliminating heavy mechanical hinges, hydraulic actuators, and moving parts, manufacturers can significantly reduce an aircraft’s overall weight and mechanical complexity. This naturally leads to lower maintenance costs and improved fuel efficiency.
Furthermore, from a defense perspective, the tactical advantages are substantial. Maneuvering an aircraft without moving control surfaces means the outer mold line of the aircraft remains entirely static during flight. We assess that this capability could drastically reduce an aircraft’s radar cross-section, offering major advancements in stealth technology and survivability for next-generation fighter jets and unmanned aerial systems.
Frequently Asked Questions
What is the X-65?
The X-65 is an experimental, uncrewed aircraft developed by Aurora Flight Sciences for DARPA’s CRANE program. It is designed to test Active Flow Control (AFC) technology.
What is Active Flow Control (AFC)?
AFC is a technology that replaces traditional moving flight control surfaces (like flaps and rudders) with pressurized jets of air to steer and maneuver the aircraft.
When will the X-65 fly?
Following program restructurings and supply chain delays, the X-65 is currently targeted for its first flight in late 2027.
Sources
Photo Credit: Aurora Flight Sciences
Military Technology
Hermeus Flies Quarterhorse Mk 2.1 Advancing Hypersonic Tests
Hermeus completed the first flight of its Quarterhorse Mk 2.1, validating key systems and progressing toward supersonic capabilities.
This article is based on an official press release from Hermeus and additional industry data.
Hermeus Completes First Flight of Quarterhorse Mk 2.1, Accelerating Hypersonic Roadmap
On March 2, 2026, Atlanta-based aerospace company Hermeus successfully conducted the first flight of its Quarterhorse Mk 2.1 aircraft at Spaceport America in New Mexico. This milestone marks the company’s second debut of a new vehicle type in just nine months, following the flight of the Quarterhorse Mk 1 in May 2025. The event underscores Hermeus’s commitment to a “hardware-rich” development strategy, prioritizing rapid iteration and physical testing over purely simulation-based engineering.
According to the company’s announcement, the mission was a remotely piloted “shakedown” sortie. The aircraft took off from runway 16/34, flew a predetermined pattern to validate stability, control, and subsystems, and executed a successful landing. While this initial flight remained subsonic, it serves as the foundation for a test campaign designed to push the vehicle past Mach 1 in the near future.
Technical Leap: From Mk 1 to Mk 2.1
The Quarterhorse Mk 2.1 represents a significant escalation in capability compared to its predecessor. While the retired Mk 1 was a smaller demonstrator powered by a GE J85 turbojet, the Mk 2.1 is approximately three times larger and four times heavier, roughly the size of an F-16 fighter jet.
Key technical specifications confirmed by Hermeus include:
- Propulsion: Powered by a Pratt & Whitney F100-229 turbofan engine, the same core used in F-15 and F-16 fighters.
- Aerodynamics: Features a delta wing design optimized for higher speeds, replacing the conventional straight wing of the Mk 1.
- Inlet Design: The Mk 2.1 utilizes a simple pitot inlet. The subsequent iteration, Mk 2.2, is slated to integrate a variable-geometry spike inlet and precooler technology required for higher supersonic regimes.
“Speed is the fundamental requirement for our flight systems and for our company. We’re building and flying aircraft on timelines that match the urgency of the world we’re in. Today’s flight kicks off a critical flight test campaign that will ultimately get us to supersonic speeds.”
AJ Piplica, CEO of Hermeus
Strategic Roadmap: The Path to Hypersonic
Hermeus is pursuing a distinct path in the high-speed aviation sector by focusing on air-breathing propulsion rather than rocket power. This approach is essential for developing reusable aircraft capable of operating from standard runways. The Quarterhorse program is structured to incrementally validate the technologies needed for the company’s future flagship vehicles: Darkhorse, a multi-mission hypersonic drone, and Halcyon, a commercial passenger aircraft.
Iterative Development Phases
The company’s roadmap relies on a “Mk” iteration strategy to manage technical risk:
- Mk 1 (Completed 2025): Validated the ability to design, build, and fly a jet from scratch in approximately one year.
- Mk 2 (Current): The Mk 2.1 validates the airframe and F100 engine integration. Future tests with the Mk 2.2 will introduce the complex inlet systems.
- Mk 3 (Future): Will integrate the full “Chimera” turbine-based combined cycle (TBCC) engine, aiming to break the SR-71’s airspeed record of Mach 3.3+.
AirPro News Analysis
The successful flight of the Mk 2.1 places Hermeus in a strong position within the competitive hypersonic landscape of early 2026. While competitors like Stratolaunch have achieved high-Mach test flights using air-launch methods, and Venus Aerospace is advancing rotating detonation rocket engines, Hermeus is carving a niche in autonomous, runway-independent air-breathing systems.
From a defense perspective, the Mk 2 platform offers immediate utility beyond serving as a mere testbed. Industry observers, including reporting by Defense News, suggest that high-speed drones like the Quarterhorse could fill critical gaps in Intelligence, Surveillance, and Reconnaissance (ISR) or serve as realistic high-speed targets for missile defense systems before the fully hypersonic Darkhorse becomes operational.
Frequently Asked Questions
Did the Quarterhorse Mk 2.1 go supersonic on this flight?
No. This initial flight was a subsonic test to validate handling and remote piloting systems. The aircraft is designed to reach speeds up to Mach 1.25 later in its test campaign.
What engine does the Mk 2.1 use?
It uses a Pratt & Whitney F100-229 turbofan, a proven engine found in tactical fighters. It does not yet use the full turbine-based combined cycle (TBCC) engine, which is reserved for later iterations.
What is the difference between Quarterhorse and Darkhorse?
Quarterhorse is a flying testbed designed to validate technology. Darkhorse is the planned multi-mission hypersonic drone intended for national defense applications, targeting speeds of Mach 5.
Sources
Photo Credit: Hermeus
Military Technology
Aurora Flight Sciences Advances Autonomous Flight with ATLAS Program
Aurora Flight Sciences unveils ATLAS, a software architecture accelerating autonomous flight testing for Boeing’s next-gen aircraft platforms.
This article is based on an official press release from Aurora Flight Sciences and industry public data.
Boeing’s Brain Trust: Aurora Industrializes Autonomy with ATLAS Program
On December 9, 2025, Aurora Flight Sciences, a Boeing company, released a significant strategic update regarding its approach to autonomous flight. Titled “Engineering Autonomy for the Next Generation of Aircraft,” the announcement details the company’s maturity in transitioning artificial intelligence from simulation labs to real-world skies. Central to this update is the ATLAS (Accelerated Testing of Live Autonomy Software) program, a development pipeline designed to serve as the “digital flight school” for Boeing’s future aviation platforms.
As the aviation industry moves toward certified autonomous operations, the focus has shifted from experimental one-off demonstrations to scalable, industrial-grade software architectures. Aurora’s latest disclosure highlights how it is using surrogate aircraft, specifically the Centaur and SKIRON-X, to validate the complex decision-making systems required for upcoming high-profile military and commercial programs.
The ATLAS Architecture: Bridging Simulation and Reality
According to the company’s announcement, the core of this new capability is the ATLAS program. This unified Software architecture allows engineers to test code in virtual environments and deploy it immediately to physical aircraft without the need for extensive rewriting. This “lab-to-sky” workflow is critical for reducing the risk associated with testing autonomous behaviors on expensive, next-generation airframes.
Dr. Mia Stevens, Chief Engineer of the ATLAS program, emphasized the operational focus of their methodology in the press release:
“What sets us apart is how we bring together research, flight testing, and real aircraft to make autonomy operational. We’re building systems that will define how the next generation of aircraft think and fly.”
Hardware-in-the-Loop Simulation (HILSim)
A key component of ATLAS is Hardware-in-the-Loop Simulation (HILSim). This process involves plugging real aircraft hardware, such as flight computers and sensors, into a simulator to “fly” thousands of virtual hours. By subjecting the actual hardware to virtual scenarios, Aurora can validate system responses to edge cases that would be dangerous or cost-prohibitive to test in the real world.
Building Human-Centric Trust
The announcement also highlighted a focus on “trust-building” between human operators and AI systems. Aurora is utilizing human-centric AI metrics, including eye-tracking and heart-rate monitoring of pilots in simulators. These metrics help engineers understand how human operators react to autonomous decisions, ensuring that the technology performs predictably and works collaboratively with human crews.
The Surrogate Fleet: Centaur and SKIRON-X
To bridge the gap between code and capability, Aurora employs a specific fleet of “surrogate” aircraft. These platforms are used to “teach” the AI before it is entrusted with classified or high-value vehicles.
- Centaur (Optionally Piloted Aircraft): Based on a modified Diamond DA42 general aviation plane, the Centaur can fly with a safety pilot on board while the AI controls the aircraft. It operates in the National Airspace System (NAS) to test sensors and decision-making algorithms in real-world traffic environments.
- SKIRON-X (Group 2 sUAS): This small, electric-aviation vertical takeoff and landing (eVTOL) drone allows for rapid, low-risk iteration of swarm behaviors and “communication-aware autonomy.”
Strategic Context: Powering the X-Planes
While the December 9 announcement focused on the underlying software architecture, this technology is the foundational “brain” for several major programs currently active as of late 2025. The autonomy stack developed under ATLAS is intended to support Boeing’s advanced projects.
One such project is the DARPA SPRINT X-Plane, a high-speed, runway-independent vertical lift aircraft utilizing “Fan-in-Wing” technology. Currently in Phase 1B (Preliminary Design), flight testing for SPRINT is targeted for 2027. Additionally, the autonomy work supports the X-65 CRANE, a revolutionary aircraft that uses bursts of air for steering rather than traditional moving control surfaces.
Aurora also continues to serve as a partner to Wisk Aero, Boeing’s autonomous air taxi subsidiary, collaborating on the autonomy stack for Wisk’s 6th Generation aircraft.
AirPro News Analysis
The Industrialization of AI Pilot Training
The significance of Aurora’s announcement lies not in the hardware itself, but in the industrialization of the training pipeline. Much like human pilots require flight hours to achieve certification, AI pilots require verified data and experience. By formalizing the ATLAS pipeline, Aurora is effectively creating a standardized “flight school” for algorithms.
This development comes at a critical time for the industry. With the FAA’s Part 108 Notice of Proposed Rulemaking (NPRM) released in August 2025, the regulatory pathway for Beyond Visual Line of Sight (BVLOS) operations is becoming clearer. The ability to demonstrate a robust safety case, backed by thousands of hours of HILSim and surrogate flight data, will be the differentiating factor for companies seeking to operate in shared airspace.
In the competitive landscape of late 2025, Aurora faces stiff competition from defense-focused firms like Shield AI, whose “Hivemind” pilot is platform-agnostic, and Skydio, which dominates the small drone market with visual navigation. However, Aurora’s integration with Boeing’s massive industrial base and its specific focus on certifying heavy, complex X-planes positions ATLAS as a critical infrastructure play for the future of aerospace defense and logistics.
Frequently Asked Questions
What is the ATLAS program?
ATLAS stands for Accelerated Testing of Live Autonomy Software. It is Aurora Flight Sciences’ unified architecture for developing, testing, and deploying autonomous flight software across different aircraft platforms.
What aircraft does Aurora use for testing?
Aurora primarily uses the Centaur, an optionally piloted Diamond DA42, and the SKIRON-X, a small eVTOL drone, as testbeds to validate software before deploying it to larger, more expensive airframes.
How does this relate to Boeing?
Aurora Flight Sciences is a Boeing company. The autonomy technologies developed by Aurora are intended to power Boeing’s future platforms, including the DARPA SPRINT X-Plane and the X-65 CRANE.
What is HILSim?
Hardware-in-the-Loop Simulation (HILSim) is a testing method where real aircraft hardware (like flight computers) is connected to a simulator. This allows engineers to test how the physical hardware reacts to virtual flight scenarios.
Sources
Photo Credit: Aurora Flight Sciences
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