Connect with us

Defense & Military

Bell Completes Critical Design Review for DARPA SPRINT X-76 Aircraft

Bell Textron finishes Critical Design Review for DARPA’s SPRINT program, advancing the X-76 aircraft to the build phase with runway-independent, high-speed VTOL capabilities.

Published

on

This article is based on an official press release from Bell Textron Inc.

Bell Textron Inc. has successfully completed the Critical Design Review (CDR) for the Defense Advanced Research Projects Agency (DARPA) SPeed and Runway INdependent Technologies (SPRINT) program. According to a company press release, this major developmental milestone clears the path for Bell to begin manufacturing its next-generation aircraft demonstrator.

The experimental aircraft has officially received the military designation of X-76. Jointly funded by DARPA and the U.S. Special Operations Command, the SPRINT initiative is designed to pioneer advanced, runway-independent aviation technologies that can eventually be scaled across various military platforms.

By passing the CDR phase, Bell transitions from conceptual engineering to the physical construction of the X-76, marking a significant step forward in high-speed vertical lift capabilities.

Advancing the X-76 Demonstrator

Transitioning to the Build Phase

In July 2025, Bell announced it had been down-selected for Phase 2 of the SPRINT program. Following the successful completion of the Critical Design Review, the company is now authorized to proceed with building the X-76 demonstrator.

“Following the completion of CDR, Bell will now begin building a brand-new X-plane with first-of-its-kind stop/fold technology.”

As stated in the official release, this innovative design approach is intended to blend the vertical takeoff and landing (VTOL) flexibility of a helicopter with the high-speed cruise performance of a fixed-wing aircraft. During Phase 1A and Phase 1B of the program, Bell finalized the conceptual and preliminary design efforts that laid the groundwork for the current build phase.

SPRINT Program Goals and Capabilities

Speed and Runway Independence

The primary objective of the SPRINT program is to develop an aircraft capable of operating without traditional runway infrastructure while maintaining high-speed forward flight. The press release notes that the X-76 is being designed to achieve cruise speeds ranging from 400 to 450 knots at relevant altitudes.

Furthermore, the aircraft must be able to hover in austere environments and operate from unprepared surfaces. These capabilities are highly sought after by the U.S. Special Operations Command to ensure rapid, flexible deployment in contested or remote operational theaters. The technologies validated by the X-76 demonstrator are intended to be scalable to different military-aircraft in the future.

Risk Reduction and Legacy

Testing and Validation

To prepare for the physical development of the X-76, Bell completed a series of rigorous risk reduction activities. The company successfully demonstrated its folding rotor, integrated propulsion, and flight control technologies at Holloman Air Force Base. Additionally, Bell conducted extensive wind tunnel testing at the National Institute for Aviation Research (NIAR) at Wichita State University.

The X-76 adds to Bell’s extensive 90-year history of experimental aircraft development. The company has previously pioneered innovative VTOL configurations for NASA, the U.S. Army, and the U.S. Air Force, including the X-14, X-22, XV-3, and XV-15, building upon the historic legacy of the Bell X-1.

AirPro News analysis

At AirPro News, we view the official designation of the X-76 and the transition to the build phase as a strong indicator of the Department of Defense’s commitment to next-generation vertical lift. We note that the requirement to cruise at 400 to 450 knots significantly exceeds the top speeds of conventional helicopters and current tiltrotor aircraft. Successfully demonstrating stop/fold rotor technology in flight will represent a major leap in aerospace engineering, potentially reshaping how special operations and tactical transport missions are executed in environments where traditional runways are unavailable or compromised.

Frequently Asked Questions

What is the X-76?

The X-76 is the official military designation for the next-generation aircraft demonstrator being built by Bell Textron Inc. for the DARPA SPRINT program.

What does SPRINT stand for?

SPRINT stands for SPeed and Runway INdependent Technologies, a joint aviation development program funded by DARPA and the U.S. Special Operations Command.

How fast will the X-76 fly?

According to the program’s official goals, the X-76 is designed to cruise at speeds between 400 and 450 knots at relevant altitudes.

Sources

Photo Credit: Bell

Continue Reading
Click to comment

Leave a Reply

Defense & Military

Lockheed Martin Advances Hypersonic Production in 2026

Lockheed Martin details 2026 hypersonic milestones including RDR testing, the NXGB glide body, and a composites supply chain deal.

Published

on

Lockheed Martin is transitioning hypersonic technology from bespoke prototyping to scalable production through a series of 2026 initiatives focused on air-breathing propulsion, advanced composite materials, and high-rate manufacturing.

In a feature published in September 2026, the company detailed its strategy to meet U.S. Department of Defense (DoD) demands for affordable, mass-producible hypersonic systems capable of sustained flight at speeds exceeding Mach 5. The effort consolidates several major milestones achieved throughout the year, including technology demonstrations and supply chain partnerships with GE Aerospace and Albany Engineered Composites.

Advancing Air-Breathing Propulsion

On January 14, 2026, Lockheed Martin and GE Aerospace announced the successful testing of a liquid-fueled Rotating Detonation Ramjet (RDR). The engine testing was conducted at the GE Aerospace Research Center in Niskayuna, New York.

Unlike steady-state combustion, rotating detonation combustion utilizes continuous detonation waves. This architecture allows the engine to ignite at lower speeds, which reduces the required size of booster rockets and increases available payload capacity. According to technical data released alongside the tests, the RDR system offers an estimated 25% efficiency increase compared to standard rocket propulsion.

“Following two years of internal investment, this demonstration is a testament to the power of collaboration, innovation and joint commitment to get affordable capability into the hands of warfighters at the speed of relevance,”

The statement was provided by Randy Crites, Vice President and General Manager at Lockheed Martin Advanced Programs. Mark Rettig, Vice President and General Manager of Edison Works Advanced Programs at GE Aerospace, added that the testing on the ramjet and inlet exceeded expectations and will serve as a foundation for maturing air-breathing hypersonic propulsion.

Scaling Manufacturing and Advanced Materials

To address the historical expense and complexity of hypersonic vehicles, Lockheed Martin introduced the Next Generation Glide Body (NXGB) on June 24, 2026. The NXGB program is centered in Huntsville, Alabama, and utilizes a manufacturing-first approach to enable rapid scaling. The vehicle is scheduled for its first flight in 2027.

Johnathon Caldwell, Vice President and General Manager of Strategic and Missile Defense Systems at Lockheed Martin, stated that the NXGB was designed from the outset to provide greater value and operational advantage while remaining affordable and producible at scale.

Sustained hypersonic flight requires thermal protection systems capable of surviving temperatures exceeding 2,000 degrees Celsius. On August 10, 2026, Lockheed Martin announced a teaming agreement with Albany Engineered Composites to accelerate the delivery of these critical materials. Chris Stone, President of Albany Engineered Composites, noted that the future of hypersonics depends on more than breakthrough design. He emphasized that the industry requires the ability to manufacture advanced composite structures at unprecedented scale.

AirPro News analysis

We view Lockheed Martin’s 2026 announcements as a clear indicator that the aerospace industry is moving past the fundamental physics of hypersonic flight and into the industrialization phase. The DoD has consistently identified manufacturing bottlenecks and high per-unit costs as primary obstacles to fielding a credible hypersonic deterrent. By investing in rotating detonation architectures and securing composite supply chains through Albany Engineered Composites, Lockheed Martin is directly targeting the efficiency gap that has historically limited hypersonic programs to small-batch experimental flights. The 2027 flight test of the NXGB will be a critical proving ground for whether these manufacturing-first design principles can deliver on their cost and scalability promises.

Sources: Lockheed Martin Feature

Photo Credit: Lockheed Martin

Continue Reading

Defense & Military

Lockheed Martin Unveils AGM-158 FLEX Modular Airframe

Lockheed Martin’s AGM-158 FLEX uses interchangeable nose cones and boat tails to support air, surface, and subsurface launch.

Published

on

Lockheed Martin Corporation has unveiled a modular airframe architecture for its AGM-158 cruise missile family, enabling a single core missile design to be launched from air, surface, sub-surface, and ground platforms.

Announced on September 15, 2026, the AGM-158 FLEX airframe utilizes interchangeable nose cones and boat tails to adapt the weapon for different mission profiles. According to a company press release, the design provides military operators with a scalable method to upgrade capabilities and avoid subcomponent obsolescence without requiring separate integration programs for new configurations.

Engineering the FLEX architecture

The FLEX concept centers on standardizing the central fuselage of the missile while allowing the front and rear sections to be swapped based on the launch platform and mission requirements. Lockheed Martin invested $35 million to design and qualify the FLEX airframe concept, a process that included concept development, testing, and prototype production.

The interchangeable nose cones will house the specific sensor suites required for different variants, including the Joint Air-to-Surface Standoff Missile (JASSM) and the Long Range Anti-Ship Missile (LRASM). The removable boat tail section allows the weapon to transition from its traditional air-launched configuration to surface, sub-surface, and ground launch setups.

“We recognized a demand from our customers to have increased options to support their evolving strategic defense and mission needs,” Lockheed Martin stated in the release. “We know no problem or threat exists in a vacuum, and so we innovate with intent, keeping integration in mind and ensuring that our solutions aren’t just new, they’re immediately useful.”

The architecture will support multiple missile lengths depending on the required range and payload:

  • 168 inches: The standard extended range option, consistent with the dimensions of the JASSM-ER.
  • 206 inches: The extreme range option, designed to support the JASSM-XR configuration.

Manufacturing capacity and defense investment

The introduction of the FLEX airframe aligns with broader efforts by the U.S. Department of Defense (DoD) to increase long-range precision strike capacity. The JASSM-XR variant, which features a 1,000-pound warhead and extreme standoff range, will be the first weapon configuration to utilize the new FLEX architecture.

To support the production of the AGM-158 family at scale, Lockheed Martin opened a 225,000-square-foot intelligent production facility in 2022. The factory incorporates dynamic model forecasting and a fully robotic paint line. The company noted that the modular nature of the FLEX airframe will directly benefit these manufacturing operations.

“The FLEX airframe will provide a modular airframe that gets ahead of subcomponent obsolescence, provides future capability enhancements to outpace threats and enable scalability at the production factory,” the company stated.

The push for scalability follows a $3.2 billion Undefinitized Contract Action awarded to Lockheed Martin in 2024 by the U.S. Air Force and U.S. Navy, aimed at significantly increasing the production capacity for both JASSM and LRASM.

AirPro News analysis

The transition to a modular airframe for the AGM-158 family represents a critical shift in munitions procurement for the DoD. By standardizing the core airframe across air, land, and sea domains, we expect the military to realize substantial logistical efficiencies. Historically, adapting an air-launched cruise missile for a vertical launching system on a surface ship or a submarine torpedo tube required extensive, bespoke engineering efforts that drove up costs and extended development timelines.

The FLEX architecture bypasses this bottleneck. With the JASSM-XR serving as the launch platform for the FLEX design, Lockheed Martin is positioning the AGM-158 family to meet the immediate demand for extreme standoff ranges. This modularity also simplifies the supply chain, allowing the 2022 production facility to churn out a single core airframe that can be customized at the final assembly stage or retrofitted as operational needs dictate.

Sources: Lockheed Martin

Photo Credit: Lockheed Martin

Continue Reading

Defense & Military

Swarm Aero Unveils Gamera UAS to Succeed MQ-9A Reaper

Swarm Aero unveiled the Gamera Group 5 UAS at Air, Space and Cyber 2026, targeting the USAF MMA program with 9,000 nm range.

Published

on

Swarm Aero unveiled the Gamera, a new Group 5 uncrewed aircraft system (UAS) designed for persistent strike and sensing, at the Air & Space Forces Association’s Air, Space & Cyber Conference in National Harbor, Maryland, on September 14, 2026.

The aircraft is positioned as a mass-producible successor to the General Atomics Aeronautical Systems Inc. (GA-ASI) MQ-9A Reaper. The announcement aligns with the July 2026 launch of the Massed Modular Aircraft (MMA) program by the U.S. Air Force (USAF) and the Defense Innovation Unit (DIU), which seeks risk-tolerant platforms capable of carrying heavy payloads over intercontinental distances.

Design philosophy and aircraft specifications

According to a company press release, Swarm Aero designed the Gamera to deliver bomber-class strike munitions at a fraction of the cost of legacy platforms. The company claims a tenfold reduction in cost-per-effect compared to existing systems, though an exact unit price has not been publicly disclosed. For context, a single MQ-9A Reaper costs in excess of $30 million.

Swarm Aero Chief Revenue Officer and co-founder Oliver Palmer stated that the company inverted conventional wisdom regarding air power platform design. Speaking to Breaking Defense, Palmer explained the engineering approach.

“What we’ve done cuts against the conventional wisdom, which is that to deliver payload from a long range against critical targets, that you want to wrap that in stealth and wrap that in all sorts of protections. And what we’ve done instead is create a very simple, non-stealthy aircraft that’s optimized for extreme range.”

The Gamera UAS features the following published specifications:

  • Wingspan: 72 feet
  • Unrefueled range: 9,000 nautical miles
  • Payload capacity: 2,800+ pounds
  • Hardpoints: 7 available store locations
  • Powerplant: Honeywell TPE331 turboprop engine
  • Software: Legion command-and-control (C2) architecture

Addressing fleet attrition and the MMA program

The push for cheaper, mass-producible drones follows high attrition rates of legacy platforms. According to reporting by Aviation International News, the USAF has lost 45 MQ-9A Reapers during the ongoing military conflict with Iran, representing approximately 25 percent of the active fleet.

To address these losses and prepare for future operational needs, the DIU set a target to field 20 new mission-ready drones under the MMA program by fiscal year 2031. The program requires a minimum payload of 2,800 pounds and a range of 8,000 nautical miles. Swarm Aero will face competition in this category, notably from GA-ASI, which recently unveiled its own MQ-9A alternative called the Wildfire, designed to carry four AGM-184 Joint Strike Missiles.

Swarm Aero executives emphasized the strategic necessity of moving away from exquisite, low-volume aircraft. Palmer noted that the People’s Liberation Army has built asymmetric ways to challenge legacy U.S. force structures, requiring a departure from incremental improvements to deter coercion of allied partners. Swarm Aero CEO and co-founder Peter Kalogiannis added that the company possesses the technical expertise required to volume-produce military aircraft and deliver the Gamera at scale.

AirPro News analysis

The unveiling of the Gamera highlights a definitive pivot in USAF procurement strategy. For two decades, the MQ-9A Reaper dominated the medium-altitude, long-endurance mission set in permissive airspace. The loss of 45 Reapers in the Iran conflict has forced a reckoning regarding the viability of deploying $30 million assets in contested environments. We view the MMA program as a critical test of the Department of Defense’s ability to acquire attritable mass.

Swarm Aero’s decision to abandon stealth in favor of extreme range and payload capacity reflects a pragmatic approach to the Pacific theater, where distance is the primary operational constraint. However, the company’s claim of a tenfold cost reduction will face intense scrutiny as the Gamera moves from prototype to production. Meeting the DIU’s 2031 fielding deadline will require Swarm Aero to rapidly scale manufacturing capabilities while competing against established prime contractors like GA-ASI.

Sources: Swarm Aero via GlobeNewswire

Photo Credit: Swarm Aero

Continue Reading
Every coffee directly supports the work behind the headlines.

Support AirPro News!

Advertisement

Follow Us

newsletter

Latest

Categories

Tags

Every coffee directly supports the work behind the headlines.

Support AirPro News!

Popular News