demonstrator

When BAE Systems unveiled the first rendering of the United Kingdom’s Combat Air Flying Demonstrator last year, it finally gave us a look at the test aircraft that will spearhead development of the Global Combat Air Program (GCAP), at the center of which is the stealthy Tempest fighter. Now, new images, as well as a scale model, provide more details and a better idea of its scale.

The company has released its clearest official photograph yet of the demonstrator under construction. Seen at the top of this story, it shows the fuselage of the jet being built at the BAE Systems facility in Samlesbury. Meanwhile, the wings and fins are being built at Warton, from where the aircraft is due to fly before the end of 2027.

In aerospace, a demonstrator (or technology demonstrator) is an aircraft built primarily to prove technologies, manufacturing methods, aerodynamic concepts, and systems integration, rather than to become an operational weapon system. As a precursor to a prototype that would more closely represent a final configuration, they are nearly always smaller, simpler designs that leverage off-the-shelf components wherever possible to get them into the air faster and to prove core concepts and/or a package of concepts. The last such known fighter demonstrator in this class built in the United Kingdom was the British Aerospace EAP that first flew in 1986 and proved the concept for the Typhoon that followed it. 

The Combat Air Flying Demonstrator will inform the sixth-generation Tempest fighter, which is being developed for the air forces of the United Kingdom, Italy, and Japan, for service in the 2040s and beyond. Canada also recently joined the program as an observer, and there are reports that Germany might also be considering coming on board.

A model of the Combat Air Flying Demonstrator presented at the Farnborough International Airshow in England earlier this week:

The new scale model confirms that the twin-engine aircraft has outward-canted twin fins and no horizontal tails. Another major difference that we know about relates to the powerplant. The Combat Air Flying Demonstrator will use the same EJ200 turbofans as the Typhoon. The production Tempest will feature an all-new powerplant that is now under development. Nevertheless, officials have said that the demonstrator will have fighter-style handling, despite its size and lack of thrust compared to the Tempest.

Overall, the demonstrator aircraft has some similarities to the F-35 (except the horizontal tails), including forward-swept intakes that are a DSI design and a prominent ‘chine’ on the forward fuselage. The center fuselage section is notably long and broad, something carried over, but to a lesser degree, from Tempest renderings and models.

The inboard leading edge of the wing is slightly cranked, there is some forward sweep on the trailing edge, and the wingtips are severely cropped. The result is something of a modified cropped-delta wing, very different to the lambda wing that appeared on the very first Tempest concept and closer to the large-area delta that appears on later Tempest concepts. As for the demo jet’s tailfins, these are simpler than those on the latest Tempest mockup, being trapezoidal rather than having five ‘sides’.

The canopy also appears to offer limited rearward visibility. The underside of the fuselage almost has area-ruled, hour-glass-like contours.

The factory-floor photograph includes technicians, assembly tooling, work platforms, and production fixtures that immediately provide useful reference points. Even allowing for perspective effects, the demonstrator’s center fuselage appears broad and deep.

Looking down the spine of the aircraft, the width of the centerbody is especially striking. The absence of skin panels exposes a substantial internal space, which accommodates low-observable serpentine intakes, while the distance between the outer mold line on each side further hints at the generous internal volume available inside the aircraft.

Of course, perspective can exaggerate proportions, and this remains a technology demonstrator rather than the final operational GCAP fighter, let alone a Tempest prototype. The aircraft that eventually enters service in the mid-2030s will undoubtedly differ in various respects.

Air Commodore Martin Lowe, the Future Combat Air System (FCAS) program director at the U.K. Ministry of Defense, has stressed this exact reality. He highlights that the Combat Air Flying Demonstrator is not a Tempest prototype, particularly not “in terms of shape or size.” The final configuration of the Tempest has yet to be settled, but it will surely be bigger and more complex than the demonstrator. A new, full-size mockup of the Tempest was also presented at the Farnborough International Airshow in England this week.

While the Combat Air Flying Demonstrator has a definite F-35 ‘look,’ the latest Tempest mockup owes more to the F-22 Raptor. In fact, in at least one recent render, seen below, it appears like a wider, squatter F-22, suggesting an even more generous internal capacity.

As TWZ previously reported, the future combat aircraft is being designed around “really extreme range” and a payload approximately double that of the F-35A. Just in terms of internal and external ordnance, for the F-35A, this equates to more than 18,000 pounds, according to the manufacturer. This would suggest the Tempest’s internal payload will be around 10,000 pounds compared to the F-35A’s 5,000 pounds.

Those requirements point toward a substantially larger aircraft with dramatically greater internal volume than today’s fighters. They also reflect similar concerns that have driven the development of the U.S. Air Force’s Boeing F-47 under the Next Generation Air Dominance (NGAD) initiative.

Range is heavily dictated by fuel load, which the Tempest will carry internally to preserve its stealth qualities. At the same time, carrying significantly more — and larger — internal weapons than current fighters demands larger weapons bays. Sixth-generation aircraft are also expected to require unprecedented electrical power generation and cooling capacity to support advanced sensors, electronic warfare suites, communications systems, onboard computing, and potentially future capabilities such as directed-energy weapons.

Previous renderings gave us an idea of the shape of Britain’s future stealth fighter demonstrator. However, the new model and photos from the production line provide useful new detail of the Combat Air Flying Demonstrator, including a better appreciation of its scale. Ultimately, once the Tempest appears, it will likely be an even bigger and more impressive aircraft.

Contact the author: thomas@thewarzone.com

The U.S. Navy has confirmed to TWZ that the MQ-25 Stingray demonstrator drone, also known as T-1, is embarked on the supercarrier USS Nimitz. Pictures of Nimitz with the uncrewed aircraft on its deck had prompted questions about whether the initial production representative MQ-25, which made its maiden flight in April, had now gone aboard a carrier for the first time. We now know that is not the case. Regardless, the images of T-1 aboard Nimitz still underscore just how big the Navy’s first advanced carrier-based drone actually is, especially when placed next to other aircraft in the air wings. Production MQ-25s will be an important and imposing presence when they enter operational service, something the service hopes will finally start next year.

“We do indeed have a Boeing-owned T-1 prototype currently onboard,” a Navy spokesperson told TWZ today when asked about the drone seen on Nimitz‘s deck.

The spokesperson directed us to contact Naval Air Systems Command (NAVAIR) for more information about the current status of the MQ-25 program. T-1 has been flying since 2019 and has taken part in a slew of testing in support of the development of the Stingray in the air and on the ground. This also includes deck handling testing aboard the Nimitz class carrier USS George H.W. Bush in December 2021, something we will come back to later on. T-1 has never taken off from or landed aboard a Navy carrier, and would have had to be transported aboard Nimitz.

“To honor the United States’ 250th anniversary, the MQ-25A T1 prototype is aboard the USS Nimitz, offering a glimpse of the Navy’s carrier air wing of the future,” Boeing has now also written in a post on X. “The special ‘Boeing Backs America’ mark highlights our support for U.S. aviation.”

The USS Nimitz has been sailing in the Atlantic Ocean as part of Fleet Exercise 250 (FLEETEX 250). This is a large, multi-national event that is running concurrently with several celebrations marking the 250th anniversary of the United States. In addition to the United States, Belgium, Brazil, Canada, Cameroon, Côte d’Ivoire, Cyprus, Denmark, France, Germany, Mexico, Morocco, the Netherlands, Norway, Peru, Senegal, Spain, Turkey, and the United Kingdom are also taking part, according to the Navy. As part of FLEETEX 250 activities last week, Nimitz had taken the lead in a group sail photo exercise that included 25 other naval vessels from 13 of the participating countries.

“USS Nimitz is underway taking part in Fleet Exercise (FLEETEX) 250 alongside 25 other warships, multi-national aircraft, and their crews, conducting a series of structured training events at-sea,” a Navy spokesperson had also told TWZ last week in response to queries about that ship after it was spotted leaving Mayport, Florida, on June 25. “Following FLEETEX, we are scheduled to take part in another major event celebrating our nation’s 250th birthday.”

The T-1 demonstrator was lashed to the carrier’s deck for the pictures, along with four F/A-18E Super Hornet fighters and two C-2A Greyhound carrier onboard delivery aircraft. The drone notably has new “250” markings written in blue on both sides of the fuselage.

As noted, T-1’s size stands out when parked next to the F/A-18Es, which are themselves not small aircraft. The production MQ-25 has a wingspan of 75 feet, according to Boeing. With its wings folded, the drone is still 31.3 feet across, as well as 51 feet long. For comparison, the Super Hornet’s wingspan is nearly 45 feet and it is just over 60 feet long, per the Navy.

T-1 looks large even when contrasted with the C-2As, at least with their wings folded. With its wings extended, the Greyhound is 80 feet, seven inches from tip to tip, according to the Navy. It is also 56 feet, 10 inches in length.

All of this underscores the amount of work the Navy will have to do to get production MQ-25s ready for routine operational use. As we wrote roughly a year ago, when the start of ground testing of the production representative Stingray was announced:

The Stingrays will also have to be woven into the existing cadence of flight deck operations, including just figuring out how to move them around amid the hustle and bustle of other activity. Carrier decks are very constrained environments physically, and present very different conditions to operate in compared to bases on land. This is true even for crewed aircraft operations, where individuals onboard can provide additional situational awareness. A wearable glove-like system that personnel could use for deck handling was notably used during testing of the X-47B. A different kind of portable control device has been used in testing of the T-1 MQ-25 demonstrator in the past, as well. The video released today does not appear to offer any major new insights into how the Navy plans to maneuver the Stingray around on carrier decks.

This is on top of more general flight testing, including demonstrating that the drones can safely take off from and land on Navy carriers, as well as integration with the control systems on those ships. The MQ-25 will bring new tactics, techniques, and procedures to the service’s carrier air wings, as well as open the door to further operational developments.

Right now, the MQ-25’s principal mission will be extending the reach of other aircraft in the carrier air wing. This is a critical capability for the Navy as adversary anti-access and area denial bubbles, especially ones that China’s People’s Liberation Army (PLA) has established and continues to expand, threaten to push carriers out of reach of target areas.

By extension, the Stingray will also eliminate the need to use crewed F/A-18F Super Hornets in the tanker role, freeing them up for other missions and reducing wear and tear on those airframes.

The drones will also come with a built-in secondary intelligence, surveillance, and reconnaissance (ISR) capability, thanks primarily to a sensor turret under the nose. The size of the MQ-25, its extreme range potential, and other attributes of the design could well lead it to be adapted to other roles in the future, such as a long-range strike platform, as TWZ has previously explored in detail.

Showcasing the T-1 during FLEETEX 250 does highlight the Stingray program and its importance to the Navy. The effort has faced significant delays and cost growth in recent years, with the original goal being for the MQ-25 to have reached initial operational capability (IOC) in 2024. As noted, the first production representative example only flew in April, despite a major push by the Navy and Boeing to hit that milestone before the end of 2025. When that drone might make its first appearance on a carrier deck remains to be seen, but the Navy is now aiming to reach IOC sometime next year.

As an aside, carrying T-1 for display during FLEETEX 250 and associated events may be the extent to which Nimitz ever embarks any MQ-25s. The Navy has extended the carrier’s service life due to a number of factors, but only into March of next year. The USS George H.W. Bush received a first-of-its-kind drone control center in 2024. The Navy subsequently moved to install that equipment on the USS Carl Vinson, USS Theodore Roosevelt, and USS Ronald Reagan, creating an initial group of Nimitz class carriers that will be able to operate the Stingrays.

The Navy also sees the MQ-25 as a ‘pathfinder’ to future uncrewed additions to its carrier air wings. This is set to include carrier-based Collaborative Combat Aircraft (CCA) drones, an effort that is still very much in its infancy. Navy officials have talked in the past about a goal to see the makeup of future carrier air wings be 60 percent or more uncrewed.

In the meantime, T-1’s latest appearance on the deck of the USS Nimitz has already underscored the big changes coming to Navy carrier air wings, both figuratively and literally.

Contact the author: joe@twz.com

NEWARK, N.J. — The mayor of Newark imposed a curfew early Sunday around an immigration detention center in New Jersey after a series of intense clashes between protesters and police.

The curfew around Delaney Hall will be in place between 9 p.m. and 6 a.m. until further notice, Mayor Ras Baraka said in a statement.

The move came after another night of standoffs between law enforcement and demonstrators at the facility, as protesters could be seen in photographs and videos fighting over barricades as police used riot shields to push them back. A video posted on social media showed police on horseback marching into crowds, attempting to break up groups of demonstrators.

The high-profile demonstrations at Delaney Hall began this month after advocates said detainees launched a hunger strike over poor living conditions at the 1,000-bed facility, the latest focus of opposition over the federal government’s immigration crackdown.

The private company GEO Group operates the lockup under the supervision of U.S. Immigration and Customs Enforcement. The shuttered facility reopened for immigration detainees in February 2025.

New Jersey state police on Friday replaced federal immigration enforcement agents who had been facing off against protesters at the facility for days.

In a statement Sunday morning, New Jersey Gov. Mikie Sherrill said masked people attacked a barrier in a designated protest area set up by state police and were “throwing projectiles, utilizing the barriers as weapons, and lighting tires on fire in the street.”

“These actions put both peaceful protesters and law enforcement in danger,” Sherrill said, urging calm to focus on advocating for “better conditions for the detainees, for their families, and ultimately, for the closure of Delaney Hall.”

Sherrill also said that the federal government has reopened family visits at Delaney Hall starting Sunday.

Asked about visitations resuming, the U.S. Department of Homeland Security said in a statement, “To be clear: Visitation was only suspended because of violent riots. Now that we have a secure perimeter, visitation can resume.”

NEWARK, N.J. — New Jersey state police set up designated protest zones and vehicle checkpoints outside an immigration detention center in Newark on Friday, replacing federal immigration enforcement agents who have been clashing with protesters for days.

Gov. Mikie Sherrill said she sent in state police to bring order outside Delaney Hall as the demonstrations have intensified, with violence and arrests increasing as night falls.

“It has grown unsafe, and that’s completely unacceptable,” the Democratic governor said at a news conference announcing the new measures. “We need to take this opportunity to lower the temperature.”

As police erected protest barriers, U.S. Immigration and Customs Enforcement agents who had formed a line in front of protesters moved inside the building’s perimeter fence.

New Jersey State Police Lt. Col. David Sierotowicz said ICE officers agreed to stand down with state police assuming responsibility.

Demonstrators had mixed reactions. Some staged a sit-in and refused to move into one of the new protest areas police set up using metal barriers and concrete blocks.

Rachel Cohen worried that demonstrators exercising their 1st Amendment rights were being silenced.

“It is not helpful to quell protest for the sake of a false peace,” she said. “There is no peace while we are torturing our neighbors on [the] government dime inside this facility.”

U.S. Homeland Security Secretary Markwayne Mullin, on social media, called the measures a “win for law and order” and noted that Sherrill had resisted sending state police for days.

The protests began a week earlier after immigrant advocates said detainees inside launched a hunger strike over poor living conditions at the 1,000-bed facility, which opened last May.

Demonstrators have been attempting to block people and vehicles from entering and exiting, linking their arms in a human chain and using trash cans, umbrellas and other items as makeshift shields and barricades.

ICE officers wearing helmets and tactical vests have used pepper spray and batons to try to disperse the protesters and clear the roadway for vehicles.

At least six demonstrators were arrested and accused of assaulting law enforcement officers Wednesday night, and more have been arrested on other nights, according to the Department of Homeland Security.

Acting U.S. Atty. Gen. Todd Blanche shared images online Friday of bloody wounds and bruises sustained by ICE officers.

“These riots are clearly not ‘peaceful protests’ as you can see from the photos of these horrific wounds,” he said. “Assault a federal officer, you’ll be held accountable.”

Another demonstrator, Lisa O’Dwyer, said she was fine with the designated protest areas.

“I like to get my point across and stay safe at the same time,” the Westfield resident said.

Eyesha Marable, pastor at Mt. Zion AME Church in Millburn, agreed, even while acknowledging that there were “different schools of thought” among protesters.

“There are people here who are angry. Their family members are inside. Their friends are inside. People have been taken off the streets, out of their communities,” she said.

“We have to keep the peace,” Marable said. “The goal is to get our people free, to get them liberated, and we cannot do that if we’re fighting out here.”

State Atty. Gen. Jennifer Davenport said it was important to “de-escalate” the situation as “violence, either against protesters or by protesters, is unacceptable.”

Sherrill said she did not want to give ICE a pretext to expand operations in the state, noting that federal immigration officers around the country have killed and injured protesters in recent months.

“We all need to do everything we can to cool things down now,” she said.

The governor and other Democratic officials tried to visit detainees Monday but were denied entry.

Democratic members of Congress from New York City, however, were able to tour Delaney Hall the day after that. They reported dire conditions, with detainees being fed small portions of often spoiled food and their varied medical needs going ignored.

Families and supporters of detainees also say their loved ones have also been subjected to pepper spray and physical force in retaliation for their hunger strike and the protests outside.

Marcelo and Shaffrey write for the Associated Press and reported from New York and Newark, respectively.

NEWARK, N.J. — Protesters clashed with armed federal immigration officers in front of a New Jersey detention center where advocates have demonstrated for days while asserting that people detained there are staging a hunger strike over poor living conditions.

Groups of demonstrators, many wearing gas masks and other face coverings, linked arms in a human chain in front of Delaney Hall in Newark on Wednesday night, videos and photos posted on social media show.

Some used trash cans, old mattresses, umbrellas and other materials as makeshift shields and barricades as they confronted U.S. Immigration and Customs Enforcement officers. Others attempted to block people and vehicles from entering and exiting the building or threw orange traffic cones and other objects in the direction of the ICE officers lined at the entry gate.

The group chanted, “You will hang!” and, “Every cop, every fed, shoot yourself in the head,” and other taunts at the officers, many of whom wore helmets and tactical vests.

The ICE officers used pepper spray to try to disperse the protesters, according to videos posted to social media. Some used their batons to beat and push back protesters as the officers attempted to clear the roadway for vehicles.

At least one truck driver got out of his vehicle to vent his frustration when some protesters tried to block vehicles driving on the road in front of the detention center. People detained inside could at times be seen waving to protesters from Delaney Hall’s windows.

The U.S. Department of Homeland Security, which oversees ICE, said about six demonstrators were arrested for assaulting law enforcement officers.

“Assaulting and obstructing ICE law enforcement is a crime and felony,” the agency said in a statement. “Anyone who assaults law enforcement will be prosecuted to the fullest extent of the law.”

On Thursday, demonstrators again returned to Delaney Hall.

New Jersey Gov. Mikie Sherrill also said state health department officials were “denied full access” to the facility for a health inspection. The Democrat said the officials were only allowed to inspect a limited part of the facility as she called on ICE to “de-escalate” the situation.

“As I’ve said repeatedly, refusing to provide full access raises serious questions about what ICE is trying to hide from public view,” Sherrill said in a statement that also repeated her calls to shut down the facility outright.

Earlier Wednesday, Democratic members of Congress from New York City toured the facility as part of an oversight visit. A private prison company runs the detention center, which sits along an industrial stretch of Newark Bay.

Reps. Jerry Nadler, Daniel Goldman and Adriano Espaillat, who all represent Manhattan, described dire conditions where people held in the facility are fed small portions of often spoiled food and their varied medical needs are ignored.

Homeland Security spokespersons have denied any hunger strike, abuse or poor conditions inside the center and dismissed criticism from opponents as political posturing.