At the company’s flight test center at Cotswold Airport (EGBP) in England, Vertical pilots took the prototype through 70 individual test points, culminating in multiple hover flights of the aircraft while it was tethered to the ground.

The next step will be to remove the tether for piloted thrustborne flights, using lift generated by the aircraft’s propellers to perform vertical takeoffs and landings and low-speed maneuvers. The company is working with the U.K.’s Civil Aviation Authority (CAA) to expand its permit to fly, which would allow it to begin that phase.

“It took us just one week to go from our first ground test to our chief test pilot flying the VX4, and we have been making outstanding progress since then,” said Stuart Simpson, CEO of Vertical.

According to Vertical, that pace of progress is three times faster than what its previous prototype accomplished.

That model crashed during an uncrewed test at Cotswold in August 2023 after a failed pylon affected the way the aircraft’s flight control system communicated with its motors, causing it to tumble about 30 feet onto the runway. The impact caused enough damage to retire the model from flight testing and force a delay to piloted untethered flight testing, which the company had hoped to complete last year.

Vertical rebounded by kicking off testing of its current VX4 prototype in July, just under one year after the crash. According to the firm, the new design is significantly more powerful.

A 20 percent increase in the aircraft’s power-to-weight ratio, by the company’s estimate, enables speeds up to 150 mph—the intended cruise speed for its flagship aircraft. The design includes Vertical’s next generation propellers and proprietary battery systems, as well as components supplied by partners such as Honeywell, Leonardo, GKN Aerospace, and Molicel. The company says it is developing an identical prototype that will further accelerate its test campaign.

Across 20 piloted test sorties, the prototype VX4 simulated flight maneuvers and scenarios—including those outside of expected operating conditions—to validate safety.

Engineers gauged how the aircraft responded to simulated failures to prove that it could fly safely even in unanticipated conditions. Vertical deliberately failed one of the prototype’s electric propulsion units (EPUs) during a piloted tether flight, for example, to confirm that its other engines automatically output maximum power to compensate. Pilots also failed EPUs during high-speed taxi to validate the aircraft’s ground handling capabilities.

Other tests focused on the model’s powertrain and propellers, preflight operations, and ability to handle turbulence.

“These tests have enabled Vertical engineers to collect and measure 35,000 flight and system parameters and verify that all systems are operating correctly and safely in different conditions ahead of further expanding the flight test envelope to piloted thrustborne flight,” the company said.

Following thrustborne flight, phase three of the test campaign will introduce conventional takeoffs, landings, and flight, with lift generated by the wing. The final phase is expected to tie everything together, with the VX4 transitioning seamlessly between thrustborne and wingborne flight.

That full transition flight has been achieved by only a handful of eVTOL manufacturers and is considered a key testing milestone.

After the VX4 prototype completes a transition flight at Cotswold, Vertical will turn to for-credit testing with the U.K. CAA, from which it is seeking a type certificate by 2026.

The firm has several marquee customers, including American Airlines, Japan Airlines, and Virgin Atlantic, that have already placed orders for its flagship model. It estimates the value of its order backlog at around $6 billion, based on about 1,500 preorders.

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The post Vertical Completes First Phase of Testing With New Air Taxi Prototype appeared first on FLYING Magazine.

The discovery was made over the weekend and the grounding of the test aircraft announced on Monday.

According to Boeing, the thrust link is a structural component between the engine and the airplane structure. The thrust link is designed to transfer thrust between the engines and pylons that attach the engine to the airframe.

• READ MORE: Report: Boeing Grounds 777X Test Fleet

“This part is custom to the 777-9, and each 777-9 engine includes two of this component so there is redundancy,” the company told FLYING in a statement. “We are keeping the FAA fully informed on the issue and have shared information with our customers.”

The FAA confirmed that Boeing had notified the agency about the situation and was taking steps to assess the issue.

A thrust link is described as a “heavy titanium component” that is not part of the engine itself. The 777X is powered by the General Electric GE9X, which has a 134-inch front fan, sitting in a cowling measuring 11 feet across. According to GE, it is the largest and most powerful engine in the world and also has more fuel efficiency than its predecessors.

Boeing told FLYING that no near-term flight tests were planned on the other flight test airplanes, which have scheduled maintenance and layup activities.

There are three 777X aircraft being used for test flights. One a is located in Hawaii, and the other two are at King County International Airport-Boeing Field (KBFI) in Seattle and Snohomish County Airport-Paine Field (KPAE) in Everett, Washington.

According to the Seattle Times, maintenance technicians discovered cracks in the thrust link after a 777X landed in Hawaii on Friday. Boeing immediately inspected the other two test aircraft and discovered cracks in them as well.

The Boeing 777X was unveiled in 2013 and took its first flight in 2020. Deliveries of the aircraft, which have not yet been certified by the FAA, are slated to begin in 2026.

The post Boeing Responds After Suspending 777X Test Flights appeared first on FLYING Magazine.

Starship and the Super Heavy booster finally made it back to Earth following the spacecraft’s fourth integrated flight test (IFT-4), which was the main goal of the mission that launched from Boca Chica, Texas. As SpaceX put it, “the payload for this test was the data.”

Super Heavy splashed down in the Gulf of Mexico after jettisoning from Starship about four minutes into the flight. Starship, meanwhile, flew nearly halfway around the world over the course of about 40 minutes before splashing down in the Indian Ocean.

External cameras and on board Starlink satellites gave viewers a rare live look at Starship’s reentry into Earth’s atmosphere from its suborbital flight path. The video feed appeared to show the loss of several heat shield tiles and damage to one of the flaps—which control the vehicle as it decelerates from hypersonic speeds—as plasma built up around the spacecraft.

Live footage cut in and out several times, prompting cheers from the SpaceX team each time the feed was restored. Crews toasted marshmallows in celebration of Starship’s inaugural landing burn, which slowed it down for a “soft” ocean landing. Then, finally, after much anticipation, the gargantuan spacecraft splashed down for the first time at T-plus 1 hour and 6 minutes.

“Despite loss of many tiles and a damaged flap, Starship made it all the way to a soft landing in the ocean!” said SpaceX CEO Elon Musk in a post on X, the social media platform he acquired in 2022. “Congratulations @SpaceX team on an epic achievement!!”

NASA Administrator Bill Nelson, who is betting on Starship to complete the necessary test flights in time for SpaceX to prepare a Starship Human Landing System (HLS) for the Artemis III mission—NASA’s first lunar landing attempt since the Apollo missions—also sang the praises of IFT-4.

After successfully making it to suborbit and back, the arrow is pointing up for Starship.

Each of the spacecraft’s first two integrated test flights ended in explosions, and its third was cut short just after reentering the atmosphere. All three attempts resulted in the spacecraft’s grounding by the FAA.

But SpaceX painted these as successes. According to the company, Starship’s development falls under its philosophy of rapid design iteration. Essentially, the firm is okay with blowing up a few rockets if it can collect data that helps it hone the design, increasing the chances of success on future launches.

A reentry and soft landing was the primary objective of Thursday’s flight test, validating that Starship and Super Heavy—which are designed to be reusable—could survive the extreme conditions during approach and landing.

At present, it’s unclear whether the extent of the damage will prevent the rocket from flying again. But with both stages back on Earth, it seems unlikely that the FAA would move to ground Starship for a fourth time.

“The fourth flight of Starship made major strides to bring us closer to a rapidly reusable future,” SpaceX said in an update on its website. “Its accomplishments will provide data to drive improvements as we continue rapidly developing Starship into a fully reusable transportation system designed to carry crew and cargo to Earth orbit, the moon, Mars, and beyond.”

That would mean Musk and SpaceX can turn to the next step in Artemis preparations: an in-orbit propellant transfer demonstration. Following that, Starship will need to complete an uncrewed lunar landing, which could require multiple launches.

The final phase will be a crewed flight test, in which the spacecraft will land billionaire entrepreneur Jared Isaacman on the moon. Isaacman is the driving force behind the Polaris Program, which in 2022 purchased three flights from SpaceX in an effort to advance human spaceflight. The program’s first mission, Polaris Dawn, is expected to launch this summer on SpaceX’s Falcon 9 rocket. It will culminate in the crewed flight of Starship.

It’s difficult to gauge exactly how many Starship launches SpaceX will need to complete before the rocket is certified for routine missions. But the company is under a time crunch.

Already, Artemis III has been pushed back from 2025 to September 2026. And NASA, facing competition from Russia, China, and others to expand the envelope for human spaceflight, will likely want to stick to that timeline.

If that’s the case, SpaceX will need to see continued positive results from rapid design interaction. The good news is that Starship appears to be on the right trajectory.

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On Wednesday morning, the autonomous, semireusable space capsule—intended for 10 service missions to the International Space Station (ISS) under a multibillion contract between the aerospace manufacturer and NASA—finally lifted off with humans for the first time.

The long-delayed mission, called the Boeing Starliner Crew Flight Test (CFT), will take NASA astronauts Butch Wilmore and Suni Williams to the orbital laboratory, where they will conduct an array of tests and evaluations of the spacecraft, its systems, and equipment.

The CFT is expected to be Starliner’s final flight test, demonstrating its capabilities with astronauts on board before NASA moves to certify it for Commercial Crew rotation missions to the ISS. The first of these, Starliner-1, could take place as early as next year.

An initial CFT launch attempt on May 6 was scrubbed, and the mission was postponed several times before finally taking flight. But Wilmore and Williams are now well on their way to the space station, where they are expected to dock Thursday at 12:15 p.m. EDT.

We Have Liftoff

Starliner lifted off from the pad at Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Wednesday at 10:52 a.m. EDT as teams had planned.

Carrying the capsule into orbit was United Launch Alliance’s (ULA) Atlas V rocket, which is making its 100th flight. Atlas V, when stacked together with Starliner, stands over 170 feet tall and generated some 1.6 million pounds of thrust at liftoff.

The liftoff represented the first time humans have hitched a ride on either Starliner or Atlas V. Williams became the first woman to fly on the maiden voyage of a crewed spacecraft.

After achieving Max Q—the moment the rocket faces the greatest amount of pressure as it climbs through the atmosphere—Starliner successfully separated from Atlas V at suborbit, just under 15 minutes into the mission. From this point on, the astronauts will be on their own.

About half an hour into the mission, Starliner executed a successful insertion burn to place it in stable orbit, from which the capsule will embark on an approximately 24-hour journey to the ISS. The spacecraft will dock with the orbital laboratory’s Harmony module Thursday afternoon, and Williams and Wilmore will disembark to join the crew of NASA’s Expedition 71 for a weeklong stay.

Setting the Stage

Throughout the CFT, the astronauts will work to prepare Starliner for certification.

The performance of equipment such as suits and seats was assessed during prelaunch and ascent. As Starliner rendezvous with the space station, the crew will conduct further testing of life support equipment, manual and automated navigation systems, and thruster performance in the scenario of a manual abort. While capable of flying on its own, the capsule can be commanded manually, and crews have failsafes at their disposal at different points in the flight path.

After assessing Starliner’s autonomous docking capabilities and the opening and closing of its hatch, the astronauts will configure the spacecraft for its stay and move emergency equipment into the ISS. Once they are settled, teams will perform checks of displays, cargo systems, and the vehicle itself.

Williams and Wilmore will also try to prove that the capsule could serve as a “safe haven” in the event of depressurization, fire, or collision with debris impacting the orbital laboratory.

On their return trip, the astronauts will briefly test out Starliner’s manual piloting capabilities. As it approaches Earth’s atmosphere, the capsule will slow from its orbital velocity of 17,500 mph and touch down in one of four locations in the Western U.S., using a combination of parachutes and airbags.

A Calculated Risk

If all goes according to plan, Starliner could launch on its first Commercial Crew rotation mission for NASA in the first half of next year. However, the space agency, Boeing, and ULA are taking a calculated risk with the mission.

A helium leak traced to one of the 28 reaction control system thrusters on Starliner’s service module—which helps maneuver the capsule while in orbit—is responsible for a few of the spacecraft’s recent setbacks. NASA describes the leak as small and stable.

But in a scenario Steve Stich, who manages the Commercial Crew program, described as “a pretty diabolical case, where you would lose two helium manifolds in two separate [thrusters]” that are next to one another, Starliner could be unable to perform a deorbit burn. That’s the maneuver that allows it to slow down from orbital speeds as it reenters the atmosphere.

NASA estimated the likelihood of this occurring at 0.77 percent. As a contingency, it and Boeing developed a modified deorbit burn procedure which they say has been tested in a simulator by Williams and Wilmore.

What It Means

There’s a lot riding on the Starliner CFT’s success.

For Boeing, which rakes in billions every quarter, the more important impact may be reputational rather than financial. The company has come under fire in recent months for its internal safety processes, and successfully flying two humans to the ISS and back could help ease the pressure.

For NASA, Starliner may be instrumental in achieving the agency’s goals.

To date, all eight Commercial Crew rotation missions have been flown by SpaceX’s Crew Dragon, which like Starliner is a reusable capsule for up to seven passengers. SpaceX signed its own multibillion-dollar contract with the space agency at the same time as Boeing and has since extended it multiple times, without failing to complete a mission.

But NASA wants an alternative to Dragon in the case of a contingency, such as the one that stranded astronaut Frank Rubio on the ISS for nearly a year—and helped him set a U.S. spaceflight record in the process. The space agency made sure to commemorate Rubio’s achievement, but it wants to avoid a similar situation recurring. By keeping two reusable spacecraft in its fleet, it could have one ready to retrieve a crew in case the other fails.

Should Starliner enter NASA’s Commercial Crew rotation, it will alternate six-month missions to the ISS with Dragon.

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The mission, which has faced a series of setbacks since an initial launch attempt was scrubbed on May 6, is now targeted for 10:52 a.m. EDT on Wednesday, with a backup launch window available Thursday.

The Starliner CFT is intended to be the spacecraft’s final test flight before NASA moves to certify it for service missions to the ISS, the first of which could take place next year. To date, all eight Commercial Crew rotation missions to the orbital laboratory have been flown by SpaceX’s Crew Dragon. 

The company signed its own multibillion-dollar contract with the space agency at the same time as Boeing but has already cemented itself as an invaluable partner. The same cannot be said for the aerospace giant, which has flown Starliner to the ISS just once.

CFT launch attempts have been delayed or scrubbed due to a litany of issues. First, it was a faulty pressure regulation valve on United Launch Alliance’s (ULA) Atlas V launch vehicle, which will carry Starliner into orbit. Then, crews discovered a small helium leak on Starliner itself, involving one of the 28 reaction control system thrusters on its service module. These small engines use helium to make minor maneuvers and keep Starliner in orbit.

NASA and Boeing have since described the leak as stable but have opted not to repair it, which would require Starliner to be unstacked from Atlas V and could take months. However, in investigating the root cause of the leak, crews discovered what the space agency described as a “design vulnerability” in the capsule’s propulsion system.

In a scenario NASA estimates has a likelihood of about 0.77 percent, the original leak could combine with an adjacent leak to prevent Starliner from performing a deorbit burn. That’s the maneuver that returns a spacecraft to Earth’s atmosphere following its mission.

All of this work identifying and assessing risk pushed the CFT back to Saturday. But yet another problem forced a cancellation of the launch just a few minutes before takeoff—and made a second go-around on Sunday infeasible.

According to the Starliner team, the issue is again on ULA’s side of things.

During the countdown, ground support equipment on the pad at Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida experienced issues, which crews traced to a power supply unit on one of three chassis on Atlas V’s Centaur upper stage. The power supply unit indirectly powers Centaur’s topping valves during the launch sequence, and all three chassis must be running in order for the countdown to be completed.

According to Tory Bruno, CEO of ULA, the chassis with the faulty power unit was quickly replaced. The new equipment has been retested and was functioning normally as of Sunday. NASA and Boeing added that they did not observe any physical damage to Starliner or Atlas V, and crews will perform a “full failure analysis” to determine what went wrong.

NASA astronauts Butch Wilmore and Suni Williams, Starliner’s first human passengers, remain in quarantine at Kennedy Space Center. If all goes according to plan, Wilmore and Williams will dock with the ISS later this week. There, they will spend about one week performing tests of Starliner’s systems as NASA prepares for the program’s next step: certification.

After that, Starliner would begin alternating six-month Commercial Crew rotation missions with SpaceX’s Dragon.

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The post New Starliner Launch Target Identified After Setback appeared first on FLYING Magazine.

The company’s massive rocket and Super Heavy booster, which when stacked together stand nearly 400 feet tall, have been grounded since March as the FAA conducts a mishap investigation into Starship’s third uncrewed orbital test flight.

However, Musk on Saturday posted an image to social media platform X—which he acquired in October 2022—of Starship and Super Heavy being moved back to the company’s Starbase launchpad in Boca Chica, Texas, which hosted the rocket’s first three test flights.

In response to a query about the date of the fourth flight, called Integrated Flight Test 4 or IFT-4, Musk gave a timeline of three to five weeks. That would place the next launch sometime in June.

SpaceX has a hit-or-miss track record when it comes to predicting Starship launches. Gwynne Shotwell, the company’s chief operating officer, said in March for example that IFT-4 could launch as soon as early May.

During the lead-up to Starship’s second test flight, which ultimately launched in November, Musk gave a timeline of six to eight weeks in April and again in June. In September, he said the rocket was “ready to launch” and was swiftly rebuffed by the FAA. However, on November 3, SpaceX correctly predicted that Starship would launch again by the middle of the month.

Starship’s three test flights have improved on each attempt but resulted in groundings of varying lengths by the FAA. The agency’s initial investigation spanned from April to November. The second took half as long, wrapping up between November and February.

Given the improvements made to Starship and Starbase before the rocket’s second flight test—such as the installation of a water-cooled steel plate beneath the launch pad to contain debris—and the relative success of its third flight test, SpaceX could be looking at a similar timeline of around three months for the current investigation. That would put it in line to close in June, making Musk’s prediction appear feasible.

Musk and SpaceX have already set ambitious goals for Starship’s fourth flight. The biggest will be to survive reentry into Earth’s atmosphere, which is where the previous mission failed. Both Starship and the Super Heavy booster are designed to be reusable.

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ValveTech, a manufacturer previously hired by Boeing supplier Aerojet Rocketdyne to build valves for Starliner’s propulsion system, is warning NASA to “immediately halt” the spacecraft’s first crewed launch, which may come as early as Friday.

The company—which sued Aerojet in 2017 alleging a violation of nondisclosure agreements (NDAs) and misuse of trade secrets—urged the space agency to “redouble safety checks and re-examine safety protocols” before the mission, which was scrubbed on May 6 due to a valve issue.

The faulty valve was located on United Launch Alliance’s (ULA) Atlas V rocket, which will launch Starliner into orbit. Tory Bruno, president and CEO of ULA, addressed ValveTech president Erin Faville’s comments directly in a post on social media platform X.

“Not sure what to say about this one,” Bruno wrote. “Close to none of it is correct: Not urgent. Not leaking. Etc. Remarkable that the particular person quoted doesn’t seem to know how this type of valve works…”

ValveTech says it supplies 14 valve components to Starliner vendors, but ULA tells FLYING it is not one of them. ValveTech did not immediately respond to FLYING’s request for comment.

Starliner has been described by NASA as a redundant alternative to SpaceX’s Crew Dragon capsule, which so far has flown eight Commercial Crew astronaut rotation missions to the International Space Station (ISS). Starliner, similarly, was designed as a reusable spacecraft to ferry astronauts to low-Earth orbit destinations.

The Starliner CFT, which had already been delayed several times, was scrubbed earlier this month due to an oscillating pressure regulation valve on the Atlas V rocket, forcing NASA to push back the launch to no earlier than Friday at 6:16 p.m. EDT.

Although NASA and ULA have already investigated and decided to remove and replace the valve, Faville warned against catastrophe should they attempt another launch.

“As a valued NASA partner and as valve experts, we strongly urge them not to attempt a second launch due to the risk of a disaster occurring on the launchpad,” said Faville. “According to media reports, a buzzing sound indicating the leaking valve was noticed by someone walking by the Starliner minutes before launch. This sound could indicate that the valve has passed its life cycle.”

NASA and ULA made no mention of a leaking valve in their assessments of the incident, saying only that the valve was oscillating abnormally.

“After evaluating the valve history, data signatures from the launch attempt, and assessing the risks relative to continued use, the ULA team determined the valve exceeded its qualification and mission managers agreed to remove and replace the valve,” NASA wrote in a blog post.

Faville later clarified that she is not calling for a permanent end to the Starliner program but rather a more thorough assessment of safety concerns.

“What I said was that NASA needs to redouble safety checks and re-examine safety protocols to make sure the Starliner is safe before trying to launch the Starliner again,” said Faville. “As a valued NASA partner, it would make no sense and not be in my company’s interest to end this mission.”

Since parting ways in 2017, ValveTech and Aerojet, a division of defense contractor L3Harris, have been tangled in a prolonged legal dispute. That year, ValveTech filed suit alleging that Aerojet breached NDAs and misused trade secrets in developing the flight valve for Starliner’s service module propulsion system.

In November, the U.S. District Court for the Western District of New York ruled that Aerojet had indeed breached two NDAs—awarding ValveTech $850,000 in damages—but had not misappropriated trade secrets.

According to Payload Space, the company sought further restrictions on Aerojet, but a judge closed the case on May 6.

In its statement regarding the May 6 launch scrub, ValveTech raised concerns about an earlier issue with one of Starliner’s valves. But the events appear to be unrelated.

In August 2021, Boeing scrubbed Starliner’s first uncrewed flight test due to a problem with the spacecraft’s service module propulsion system—the same system ValveTech alleges Aerojet built using trade secrets.

ValveTech alleges that “NASA, Boeing, and Aerojet…qualified this valve for [Starliner CFT] without proper supporting data or previous history or legacy information,” citing witness testimony from its November trial.

However, according to NASA and ULA, the incident on May 6 involved a pressure regulation valve on ULA’s Atlas V rocket—not the service module, which is on the Starliner capsule itself.

“The concerns raised by ValveTech in relation to the Crew Flight Test (CFT) mission are not applicable to the pressure regulation valve with off nominal performance during the first launch attempt,” a ULA spokesperson told FLYING.

ValveTech and Faville’s comments appear unlikely to deter NASA and Boeing from attempting a second Starliner CFT launch as early as Friday.

The companies have a $4.2 billion contract that includes six Commercial Crew rotation missions to the ISS on an unspecified timeline. SpaceX’s Crew Dragon already fills that role for the space agency. But NASA hopes to put a second spacecraft in the rotation for redundancy in the case of a contingency.

Safety, of course, remains a priority for the space agency. But with the program now several years behind schedule and an estimated $1.5 billion over budget, stakeholders will be eager to see Starliner fly with a crew as soon as possible.

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Initially scheduled for early 2023, the flight, called Boeing Crewed Flight Test-1 (CFT-1), has since been delayed multiple times. The most recent setback occurred before a planned launch on Monday, which was called off just two hours before takeoff due to a valve issue on the upper stage of the United Launch Alliance (ULA) Atlas V launch vehicle that will send Starliner into orbit. ULA is a joint venture between Boeing and Lockheed Martin.

ULA crews identified the issue after noticing a buzzing noise created by an oscillating pressure regulation valve located on a liquid oxygen tank on the Atlas V’s upper stage. Starliner astronauts Butch Wilmore and Suni Williams safely exited the spacecraft, which was parked at Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida.

Teams were quickly able to repair the oscillating valve. But according to NASA, the issue resurfaced twice during fuel removal. After evaluating the valve and completing a thorough review on Tuesday, ULA decided to remove and replace it.

As a result, NASA announced that the next launch attempt will take place no earlier than 6:16 p.m. EDT on Friday, May 17.

ULA on Wednesday rolled Atlas V and Starliner, still stacked together, back to NASA’s Vertical Integration Facility at Space Launch Complex-41. There, teams are working to replace the faulty part and perform leak checks and functional checkouts before the next launch attempt.

The Starliner program has contended with nearly a decade of delays since Boeing first announced it in 2011, including an uncrewed orbital test flight that failed to reach the ISS as planned.

CFT-1 is expected to be the spacecraft’s final flight before being deployed for NASA’s Commercial Crew program, which rotates astronaut crews at the orbital laboratory.

All eight Commercial Crew rotation missions to date have been flown using SpaceX’s Crew Dragon capsule, an alternative to Starliner also under contract with NASA. Boeing and NASA’s contract includes a total of six service missions using Starliner.

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Last week, Kendall got in the cockpit of a self-flying fighter plane during a historic flight at Edwards Air Force Base (KEDW) in California. The aircraft—called the X-62A Variable In-flight Simulator Test Aircraft, or VISTA for short—is a modified F-16 testbed and represents the Air Force’s first foray into aircraft flown entirely by machine learning AI models.

As Kendall and a safety pilot observed, the X-62A completed “a variety of tactical maneuvers utilizing live agents” during a series of test runs. Incredibly, the aircraft was able to simulate aerial dogfighting in real time, without Kendall or the safety pilot ever touching the controls. According to the Associated Press, VISTA flew at more than 550 mph and within 1,000 feet of its opponent—a crewed F-16—during the hourlong simulated battle.

“Before the flight, there was no shortage of questions from teammates and family about flying in this aircraft,” Kendall said. “For me, there was no apprehension, even as the X-62 began to maneuver aggressively against the hostile fighter aircraft.”

It wasn’t VISTA’s first rodeo. In September, the Air Force for the first time flew the uncrewed aircraft in a simulated dogfight versus a piloted F-16 at the Air Force Test Pilot School at Edwards. The department said autonomous demonstrations are continuing at the base through 2024. But Kendall’s decision to get into the cockpit himself represents a new vote of confidence from Air Force leadership.

“The potential for autonomous air-to-air combat has been imaginable for decades, but the reality has remained a distant dream up until now,” said Kendall. “In 2023, the X-62A broke one of the most significant barriers in combat aviation. This is a transformational moment, all made possible by breakthrough accomplishments of the ACE team.”

ACE stands for Air Combat Evolution, a Defense Advanced Research Projects Agency (DARPA) program that seeks to team human pilots with AI and machine-learning systems. The Air Force, an ACE participant, believes the technology could complement or supplement pilots even in complex and potentially dangerous scenarios—such as close-quarters dogfighting.

“AI is really taking the most capable technology you have, putting it together, and using it on problems that previously had to be solved through human decision-making,” said Kendall. “It’s automation of those decisions and it’s very specific.”

ACE developed VISTA in 2020, imbuing it with the unique ability to simulate another aircraft’s flying characteristics. The aircraft received an upgrade in 2022, turning it into a test vehicle for the Air Force’s AI experiments. 

VISTA uses machine learning-based AI agents to test maneuvers and capabilities in real time. These contrast with the heuristic or rules-based AI systems seen on many commercial and military aircraft, which are designed to be predictable and repeatable. Machine learning AI systems, despite being less predictable, are more adept at analyzing complex scenarios on the fly.

“Think of a simulator laboratory that you would have at a research facility,” said Bill Gray, chief test pilot at the Test Pilot School, which leads program management for VISTA. “We have taken that entire simulator laboratory and crammed it into an F-16, and that is VISTA.”

Using machine learning, VISTA picks up on maneuvers in a simulator before applying them to the real world, repeating the process to train itself. DARPA called the aircraft’s first human-AI dogfight in September “a fundamental paradigm shift,” likening it to the inception of AI computers that can defeat human opponents in a game of chess.

Since that maiden voyage, VISTA has completed a few dozen similar demonstrations, advancing to the point that it can actually defeat human pilots in air combat. The technology is not quite ready for actual battle. But the Air Force-led Collaborative Combat Aircraft (CCA) and Next Generation Air Dominance programs are developing thousands of uncrewed aircraft for that purpose, the first of which may be operational by 2028.

The goal of these initiatives is to reduce costs and take humans out of situations where AI could perform equally as well. Some aircraft may even be commanded by crewed fighter jets. The self-flying systems could serve hundreds of different purposes, according to Kendall.

Even within ACE, dogfighting is viewed as only one use case. The idea is that if AI can successfully operate in one of the most dangerous settings in combat, human pilots could trust it to handle other, less dangerous maneuvers. Related U.S. military projects, such as the recently announced Replicator initiative, are exploring AI applications in other aircraft, like drones.

However, autonomous weapons, such as AI-controlled combat aircraft, have raised concerns from various nations, scientists, and humanitarian groups. Even the U.S. Army itself acknowledged the risks of the technology in a 2017 report published in the Army University Press.

“Autonomous weapons systems will find it very hard to determine who is a civilian and who is a combatant, which is difficult even for humans,” researchers wrote. “Allowing AI to make decisions about targeting will most likely result in civilian casualties and unacceptable collateral damage.”

The report further raised concerns about accountability for AI-determined strikes, pointing out that it would be difficult for observers to assign blame to a single human.

The Air Force has countered that AI-controlled aircraft will always have at least some level of human oversight. It also argues that developing the technology is necessary to keep pace with rival militaries designing similar systems, which could be devastating to U.S. airmen.

Notably, China too is developing AI-controlled fighter jets. In March 2023, Chinese military researchers reportedly conducted their own human-AI dogfight, but the human-controlled aircraft was piloted remotely from the ground.

Leading U.S. defense officials in recent years have sounded the alarm on China’s People’s Liberation Army’s growing capabilities, characterizing it as the U.S. military’s biggest “pacing challenge.” The country’s AI flight capabilities are thought to be behind those of the U.S. But fears persist that it may soon catch up.

“In the not too distant future, there will be two types of Air Forces—those who incorporate this technology into their aircraft and those who do not and fall victim to those who do,” said Kendall. “We are in a race—we must keep running, and I am confident we will do so.”

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The company on Tuesday said it completed a crewed, full transition flight of its Alia-250 (A250) eVTOL, shifting from vertical lift to forward cruise on fixed wings during the same flight. The model is one of two aircraft the firm is looking to commercialize in the coming years, along with a conventional takeoff and landing (eCTOL) Alia variant. Over four years of flight testing, Beta says its aircraft together have now logged more than 40,000 nautical miles.

Beta competitor Joby Aviation has also completed a crewed transition flight, putting a U.S. Air Force pilot at the helm in 2023. It claims to be the first to achieve the milestone. However, Beta’s flight is believed to be the first to include an out and back. Another competitor, Archer Aviation, said in January it is progressing toward a full wing-borne transition flight after it completed the first phase of its own flight campaign with the Air Force.

Like all of Beta’s test flights to date, the transition flight at the company’s flight test facility in Plattsburgh, New York, was crewed. Alia was piloted by Nate Moyer, a former Air Force experimental test pilot. The transition took place a few feet above the runway, with the aircraft relying solely on its fixed wings for cruise. Vertical propellers got the aircraft off the ground but remained stationary during forward flight.

According to Beta, the transition flight will provide key data the manufacturer will use to validate its design choices, as it works to type certify its eVTOL with the FAA. The eCTOL variant of Alia is expected to be given the all-clear about one year before then. But the company intends to conduct more crewed eVTOL transitions in the coming months.

The runway-independent aircraft will first be deployed by the U.S. military. Beta in January wrapped up its first eCTOL deployment for the Air Force and has delivered both aircraft and electric chargers to Eglin Air Force Base (KVPS) in Florida for Air Force testing.

The manufacturer also continues to collaborate with AFWERX, the innovation arm of the Air Force with which it has worked since 2020. Together, Beta and AFWERX in 2022 conducted the first airman flight of an electric aircraft.

Beyond the military, Beta expects its eVTOL to be used by cargo carriers and passenger-carrying operators. It has electrification partnerships with U.S. FBOs Atlantic Aviation and Shoreline Aviation to install charging stations for eVTOL and eCTOL service at FBO terminals from coast to coast.

As of March, the company has installed chargers at 19 locations, with a further 50 in the permitting or construction process. The systems are designed to accommodate both of Beta’s flagship models, but also those of its competitors.

Beta’s eVTOL customers include the United Postal Service, LCI, Blade Air Mobility, and Canada’s Helijet. Air New Zealand, meanwhile, has opted for the eCTOL Alia variant. Customers United Therapeutics and Bristow Group are looking to introduce both aircraft.

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