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Starfighters Space and GE Aerospace Complete Supersonic Ramjet Test Campaign

Starfighters Space and GE Aerospace concluded supersonic tests of a solid-fuel ramjet using F-104 aircraft at Kennedy Space Center, advancing hypersonic tech.

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Starfighters Space and GE Aerospace Complete Supersonic Ramjet Test Campaign

On January 5, 2026, Starfighters Space, Inc. (NYSE American: FJET) announced the successful conclusion of a supersonic flight test campaign conducted in collaboration with GE Aerospace. Operating from the Kennedy Space Center in Florida, the company utilized its fleet of F-104 Starfighter aircraft to execute high-speed “captive carry” missions for GE’s Atmospheric Test of Launched Air-breathing System (ATLAS).

According to the company’s official statement, the tests involved carrying the ATLAS test vehicle under the wing of the F-104 at speeds exceeding Mach 2. These flights were designed to validate critical performance metrics for GE’s solid-fuel ramjet (SFRJ) technology, a propulsion system intended for future hypersonic applications. The campaign was supported by funding from the U.S. Department of Defense under Title III of the Defense Production Act.

The collaboration highlights a growing trend in the aerospace sector where legacy platforms are repurposed to accelerate the development of next-generation defense technologies. By using a reusable, piloted aircraft, the program aimed to simulate realistic atmospheric conditions for the ramjet engine without the high costs associated with expendable rocket launches.

Technical Achievements and Flight Profile

The core objective of the campaign was to subject the ATLAS payload to the specific airflow and thermal environments required to “start” a ramjet engine. Unlike traditional jet engines that use rotating compressors, ramjets rely on the vehicle’s forward supersonic motion to compress incoming air. The F-104 Starfighter, capable of sustained Mach 2 flight, served as a “flying wind tunnel” for these tests.

The ATLAS Payload

GE Aerospace’s ATLAS vehicle utilizes a solid-fuel ramjet architecture. This design is distinct because it contains no moving parts and uses a solid hydrocarbon fuel lining the combustor. As the engine operates, the fuel ablates, or burns away, to sustain thrust. The technology is engineered to power vehicles at hypersonic speeds, generally defined as Mach 5 or higher.

In the press release, GE Aerospace executives noted the importance of real-world flight conditions for maturing this technology.

“The Starfighters team provided a reliable, flight-ready supersonic platform that enabled us to conduct multiple captive carry flights in realistic atmospheric conditions. Commercially operated test aircraft… play an important role in accelerating development timelines.”

Mark Rettig, VP & General Manager, Edison Works Business & Technology Development, GE Aerospace

Operational Context

Starfighters Space operates the world’s only commercial fleet of F-104s. These aircraft are certified to fly within designated supersonic corridors, such as the warning areas off the Florida coast. This capability allows defense primes and government agencies to gather data on ignition, combustion stability, and thrust in a high-cadence testing environment.

“For customers developing next-generation propulsion and aerospace systems, access to flight-proven supersonic platforms is essential. These missions not only validate our business model, but also demonstrate the advanced capabilities of our aircraft.”

Rick Svetkoff, CEO of Starfighters Space

Strategic Implications for Hypersonic Development

AirPro News analysis

The successful completion of the ATLAS campaign underscores a critical bottleneck in the United States’ pursuit of hypersonic capabilities: testing infrastructure. As the Department of Defense races to match the capabilities of near-peer competitors, the demand for wind tunnels and flight test opportunities has outstripped supply. Traditional testing methods often involve building expensive, single-use rocket boosters to accelerate test vehicles to the required speeds.

By utilizing the F-104 platform, Starfighters Space offers a solution that bridges the gap between ground-based wind tunnels and full-scale rocket launches. This approach aligns with the broader industry push toward “responsive space” and rapid prototyping. The use of Defense Production Act Title III funding for this program further signals the Pentagon’s intent to shore up the domestic industrial base for high-speed Propulsion.

While other companies like Stratolaunch and Hermeus are developing new platforms for similar purposes, Starfighters Space leverages a legacy platform that is already certified and operational. This allows for immediate testing capabilities, a crucial factor as the U.S. government seeks to deploy hypersonic systems in the near term.

Frequently Asked Questions

What is a Solid-Fuel Ramjet (SFRJ)?

A solid-fuel ramjet is a type of jet engine that uses the vehicle’s forward motion to compress air, which is then mixed with a solid fuel source lining the combustion chamber. It has no moving parts, making it simpler and potentially more robust than liquid-fuel engines for certain high-speed applications.

Why use an F-104 Starfighter for testing?

The F-104 is one of the few aircraft capable of sustained flight at Mach 2 (twice the speed of sound) while carrying heavy external payloads. Its high speed allows it to simulate the airflow conditions necessary to ignite and test ramjet engines, acting effectively as a reusable first stage or a flying testbed.

What is the significance of the Defense Production Act Title III funding?

Title III of the Defense Production Act provides the President with the authority to ensure the domestic industry can meet national defense needs. Funding under this title indicates that the technology being tested, in this case, solid-fuel ramjets, is considered essential to national security.

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Photo Credit: Starfighters Space

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Defense & Military

Airbus Delivers First CT-153 Juno to Royal Canadian Air Force

Airbus handed over the first H135 CT-153 Juno helicopter to the RCAF on June 17, 2026, under Canada’s FAcT program.

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Airbus delivered the first H135 helicopter, officially designated the CT-153 Juno, to the Royal Canadian Air Force (RCAF) on June 17, 2026, initiating the physical fleet modernization for Canada’s Future Aircrew Training (FAcT) program.

The handover took place at the Airbus Helicopters facility in Fort Erie, Ontario. According to an Airbus press release, the twin-engine platform will serve as the foundational rotary-wing training aircraft for the next generation of Canadian military pilots. The delivery occurred 18 months after the initial program framework was established.

Modernizing Canadian pilot training

The FAcT program is a comprehensive initiative to replace legacy training systems and establish a unified standard for multi-engine transition training within the RCAF. The aircraft acquisition is managed by SkyAlyne, a joint venture between CAE and KF Aerospace.

On November 4, 2024, SkyAlyne and KF Aerospace signed a contract with Airbus to acquire 19 H135 helicopters. The first of these aircraft was publicly unveiled at the CANSEC 2026 defence exhibition in Ottawa on May 27, 2026, prior to its official handover.

The Canadian variants feature specific modifications developed in-country. These include customized avionics, communications systems, and cockpit configurations tailored to RCAF requirements. The aircraft are also equipped with the Airbus Helionix avionics suite.

Industry and military collaboration

The 18-month timeline from framework to delivery required close coordination between the manufacturer, the training consortium, and the Canadian government. SkyAlyne General Manager Kevin Lemke stated that the collective mission is to ensure the RCAF maintains a strategic advantage in the skies.

“By working together collaboratively, we, industry, military, and Government, can deliver better work, faster, to make sure the RCAF has the best trained aircrew in the world, and our selection of the CT-153 Juno is a core component of that effort,” Lemke said.

Dwayne Charette, President of Airbus Helicopters in Canada, noted that the delivery highlights the depth of domestic capability. He added that the milestone underscores a long-term commitment to supporting Canadian defense with in-country expertise.

Global footprint of the H135

The RCAF joins a broad international operator base utilizing the H135 in military training roles. According to Airbus, 13 militaries globally currently operate the platform for aircrew instruction.

The manufacturer reports that more than 1,600 H135 family aircraft have been delivered worldwide across all variants. Of those, over 200 helicopters are either delivered or on order specifically for military training missions, accumulating more than 650,000 flight hours in that capacity.

AirPro News analysis

We view the 18-month turnaround from contract framework to first delivery as a notable achievement in modern defense procurement, a sector frequently characterized by extended timelines and supply chain delays. By selecting an established commercial off-the-shelf platform like the H135 and modifying it domestically, SkyAlyne and the RCAF have mitigated significant developmental risks.

The integration of the Helionix avionics suite will provide Canadian student pilots with a modern glass-cockpit environment that closely mirrors the operational helicopters they will eventually fly. This standardization is critical for smoothing the transition from the training environment to frontline RCAF squadrons.

Sources: Airbus

Photo Credit: Airbus

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Defense & Military

AERO Vodochody Wins L-39 Skyfox Contracts in Africa and North America

AERO Vodochody secures L-39 Skyfox contracts with Angola and a North American operator, filling production through mid-2027.

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Czech aircraft manufacturer AERO Vodochody AEROSPACE a.s. (AERO) has secured contracts to deliver its L-39 Skyfox trainer to the Angolan Air Force and a North American civil operator, filling the company’s production backlog through the second quarter of 2027.

Announced in a press release on June 18, 2026, the agreements mark the entry of the Skyfox platform into the African and North American markets. The recent deals contribute to a broader surge in orders for the manufacturer, which has logged commitments for nine new Skyfox military aircraft and several L-39 Albatros overhauls over the past few months, totaling more than EUR 200 million.

Angolan Air Force fleet modernization

The Angolan Air Force contract includes up to four new-build L-39 Skyfox aircraft. According to AERO, the military operator initially evaluated overhauling its existing fleet of legacy L-39 Albatros trainers. After assessing operational capabilities and economic factors, the air force opted to procure the modernized Skyfox platform instead.

Beyond the airframes, the Angolan agreement encompasses related support services and products designed to help the air force establish a comprehensive training system for its pilots.

North American expansion and production impact

The second contract involves a single L-39 Skyfox destined for an unnamed civil operator in North America. Reporting from Air Data News indicates the customer already operates legacy L-39 aircraft and intends to use the new Skyfox to commercially market the brand within the region.

AERO President and Chairman of the Board Viktor Sotona stated the entry into these two new markets significantly increases the visibility of the aircraft, enabling direct presentations to other prospective customers.

“The new contracts confirm that the Skyfox programme has global potential and that AERO is on the right track,” Sotona said.

The influx of orders, which includes two aircraft subject to options among the nine recently ordered, has secured AERO’s manufacturing line capacity through mid-2027. The L-39 Skyfox, officially rebranded from the L-39NG designation on October 16, 2024, now maintains an operational footprint spanning four continents.

AirPro News analysis

The decision by the Angolan Air Force to pivot from overhauling legacy airframes to purchasing new-build aircraft highlights a critical transition point for operators of Cold War-era trainers. As the original L-39 Albatros fleet ages, the cost delta between deep overhauls and acquiring the modernized Skyfox is narrowing. We expect AERO to leverage this Angolan procurement as a case study when pitching the Skyfox to other African and Asian nations currently facing similar fleet recapitalization decisions. The strategic placement of a demonstrator aircraft with a North American civil operator also provides AERO with a low-cost marketing foothold in a region with a large, active community of private tactical aircraft owners.

Sources: AERO Vodochody AEROSPACE a.s.

Photo Credit: AERO Vodochody

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Defense & Military

VC-25B Bridge Aircraft Arrives at Joint Base Andrews

The U.S. Air Force accepted the L3Harris-converted VC-25B Bridge aircraft on June 19, 2026, ahead of the primary Boeing delivery in 2028.

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The U.S. Air Force received an interim presidential aircraft on June 19, 2026, as the VC-25B “Bridge” jet arrived at Joint Base Andrews (ADW) to begin commissioning flights. The modified Boeing 747-8, delivered by L3Harris Technologies, provides an immediate solution to severe delays in the primary replacement program.

In a press release issued by the U.S. Air Force, officials confirmed the aircraft arrived sporting a new red, white, and blue livery. The delivery follows a rapid 10-month conversion process by L3Harris, initiated after supply chain and labor shortages pushed The Boeing Company’s delivery of the standard VC-25B fleet from 2024 to 2028.

Rapid conversion and security audits

The Bridge aircraft originated as a VIP-configured Boeing 747-8 donated by Qatar. Following dissatisfaction from President Donald Trump regarding the timeline of the primary Boeing contract, a dedicated task force launched in February 2025 to accelerate an interim capability. L3Harris secured the contract to transform the donated airframe into a secure military platform.

According to flight tracking data and program details provided by AirPro News partner AirNav Radar, L3Harris completed the overhaul in a record 10 months. To meet this accelerated schedule, contractors kept the luxury Qatari interior minimally changed. The aircraft was stripped down to its cabling to allow for comprehensive forensic security audits, ensuring no foreign monitoring devices were present before installing classified communications equipment.

General Ken Wilsbach, Air Force Chief of Staff, highlighted the rapid turnaround in a statement provided to AirNav Radar.

“We are proud to deliver the VC-25B Bridge aircraft to the President. Many thought it could not be done, but the United States Air Force was able to execute and provide a secure, reliable airborne command post on an accelerated timeline.”

Commissioning and public debut

With the aircraft now stationed at Joint Base Andrews in Maryland, the Presidential Airlift Group will conduct a series of commissioning flights. The U.S. Air Force stated the aircraft has entered service to provide secure continuity for the commander in chief following its final government modifications.

The modified Boeing 747-8 is scheduled to make its first major public appearance shortly after completing these initial flights. President Trump confirmed the aircraft will participate in the United States 250th Anniversary flyover in Washington D.C. on July 4, 2026.

According to reporting by The Aviationist, the President noted the significance of the upcoming event.

“This will be a flyover on July 4th I think I can say the likes of which we’ve never seen before.”

Fleet transition and legacy aircraft

The introduction of the Bridge aircraft alters the operational footprint of the Presidential Airlift Group. The legacy Boeing VC-25A jets, which have served as the primary presidential transport for decades, will now transition into a backup role. AirNav Radar notes these older airframes will frequently operate under the “Air Force Two” callsign when carrying the Vice President, remaining in service until their planned retirement to museums in 2029.

Boeing continues work on the two fully-fledged VC-25B aircraft. Defense News reports that a lack of properly cleared workers and ongoing Supply-Chain constraints forced the timeline revision to 2028.

AirPro News analysis

The successful Delivery of the VC-25B Bridge aircraft demonstrates a rare instance of rapid procurement within the heavy Military-Aircraft sector. By leveraging a donated, pre-configured Boeing 747-8 and accepting a minimally changed interior, the U.S. Air Force bypassed years of standard acquisition bureaucracy. We view this 10-month turnaround by L3Harris as a potential case study for future interim military platforms, proving that commercial-off-the-shelf or donated assets can be securely militarized on compressed timelines when political will and operational necessity align. However, the forensic security required to clear a foreign-sourced airframe for presidential use highlights the unique challenges of bypassing traditional domestic production lines.

Sources: U.S. Air Force

Photo Credit: U.S. Air Force

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