With the help of tools like hot-wire anemometers (measure turbulence), pressure sensors, and far-field microphones to capture both the way air moved through the engine and the noise it produced. What they discovered was that the irritating sound wasn’t just about volume. It had to do with how the sound energy was spread out.
They identified two types of noise patterns. First, called duct haystacking, happened during cruising, when the engine was at low thrust. Here, the boundary layer air flows gently into the engine and interacts mostly with the duct, the tube around the fan. This created a fuzzy sound.
The second noise, called fan haystacking, occurred during take-off, when the engine worked at high thrust. Powerful suction pulled in rougher, more chaotic air, which slammed into a large portion of the spinning fan blades. The result was even more scattered and harsh noise.
These findings can help engineers trace each noise pattern back to its aerodynamic cause and allow them to design engines that truly sound quieter to people, not just look quiet on paper. “By linking turbulent flow ingestion patterns to how people perceive noise, we are giving engineers the tools to design future aircraft that truly sound as quiet as they look,” Feroz Ahmed, lead researcher, said.
According to a report recently published by Lawrence Livermore National Laboratory (LLNL), the NIF had achieved ignition for the seventh time in February 2025, and the latest achievement seems to have emerged from the eighth time. However, there is no official communique on this matter.
“On Feb. 23, 2025, NIF achieved ignition for the seventh time while setting a new target gain record (energy yield vs. energy on target) of 2.44. The 2.05 MJ shot yielded 5.0 MJ, highest for a 2.05 MJ shot and the second highest overall,” LLNL had noted earlier.
Progress over previous milestone
This surge in energy production marks a pivotal development, substantially building upon the NIF’s landmark 2022 success.
It was then that scientists first achieved a controlled fusion reaction that demonstrably released more energy (3.15 megajoules) than the 2.05 megajoules of laser energy directly applied to the fuel target. This was the first controlled fusion experiment to do so.
Despite the reported increases in yield, the energy produced is not sufficient for grid-scale power generation, nor does it offset the total energy consumed by the NIF to conduct the experiments.
Inertial confinement is one of the primary methods being researched globally to achieve controlled fusion. The other main approach, magnetic confinement, uses strong magnetic fields to contain and compress plasma to induce fusion.
“For the last six decades, LLNL researchers and their colleagues have been working to achieve one of the most challenging goals in all of science and a primary objective of NIF: fusion ignition,” remarked the Lab.
The facility was not designed for continuous power output; for example, the 2022 net-positive shot required approximately 300 megajoules to operate the laser system alone. The experiments serve as continued demonstrations of controlled nuclear fusion principles.
Mexican navy ship crashes into Brooklyn Bridge killing two crew members
In a post on X, New York City mayor Eric Adams stated that preliminary inspection confirmed the bridge sustained no damage and has been reopened to the public.
A large Mexican navy tall ship on an international goodwill visit to New York struck the Brooklyn Bridge late Saturday, snapping all three of its towering masts in a dramatic crash that left two crew members dead and at least 19 injured—including two in critical condition.
While the exact cause of the collision is under investigation, a few reports have suggested that the ship faced a power outage causing it to veer off its path. In a post on social media platform X, New York City mayor Eric Adams stated that preliminary inspection confirmed the bridge sustained no damage and has since reopened to the public.
“Earlier tonight, the Mexican Navy tall ship Cuauhtémoc lost power and crashed into the Brooklyn Bridge. At this time, of the 277 on board, 19 sustained injuries, 2 of which remain in critical condition, and 2 more have sadly passed away from their injuries,” NYC mayor Adams posted.
The Mexican navy stated on X that the Cuauhtémoc is an academy training ship. It confirmed 22 injuries, with 19 requiring medical care. The country’s President Claudia Sheinbaum Pardo expressed condolences for the two crew members who died in the incident, offering support to their families.
Telegram Founder Says he Rejected Request to 'Silence' Conservative Voices in Romania
Telegram founder says he rejected a Western request to 'silence' conservative voices in Romania
The founder of the Telegram messaging app, Pavel Durov, said on Sunday he had refused a request by a Western government, which he did not name, to "silence" conservative voices in Romania ahead of a presidential election run-off there.
Romanians were voting on Sunday in a run-off that pits a hard-right eurosceptic against a centrist independent. The outcome of the contest will have significant implications for both Romania's struggling economy and European Union unity.
"You can't 'defend democracy' by destroying democracy. You can't 'fight election interference' by interfering with elections. You either have freedom of speech and fair elections — or you don't. And the Romanian people deserve both," he said.
Durov, born in Russia but now a French national, was detained last year in France amid an investigation into crimes related to child pornography, drug trafficking and fraudulent transactions associated with the app.
In March Durov, who denied any wrongdoing, returned to Dubai. Telegram is widely used in Russia, including by the authorities and officials, and in Eastern Europe.
Federal Officials Launch Investigation Into Mexican Tall Ship That Struck Brooklyn Bridge
Federal transportation officials have launched an investigation into why a Mexican navy tall ship hit the Brooklyn Bridge in a collision that snapped the vessel's three masts, killed two crew members and left some sailors dangling from harnesses high in the air.
The ship known as the Cuauhtemoc was visiting New York on a global goodwill tour when the accident occurred Saturday evening. The vessel could be seen in multiple eyewitness videos traveling swiftly in reverse toward the bridge near the Brooklyn side of the East River. Then its three masts struck the bridge and snapped, one by one, as the ship kept moving.
The vessel, which was flying a giant Mexican flag and had 277 people aboard, then drifted into a pier on the riverbank as onlookers scrambled away.
Sailors could be seen aloft in the rigging on the damaged masts but, remarkably, no one fell into the water, officials said.
Sydney Neidell and Lily Katz told The Associated Press they were sitting outside to watch the sunset when they saw the vessel strike the bridge.
“We saw someone dangling, and I couldn’t tell if it was just blurry or my eyes. And we were able to zoom in on our phone, and there was someone dangling from the harness from the top for like at least like 15 minutes before they were able to rescue them,” Katz said.
Just before the collision, Nick Corso took his phone out to capture the backdrop of the ship and the bridge against a sunset, Instead, he heard what sounded like the loud snapping of a “big twig." Several more snaps followed.
People in his vicinity began running and “pandemonium” erupted aboard the ship, he said. He later saw a handful of people dangling from a mast.
“I didn’t know what to think, I was like, is this a movie?” he said.
The Mexican navy said in a post on the social platform X that the Cuauhtemoc was a training vessel. It said a total of 22 people were injured.
Mexican President Claudia Sheinbaum lamented the loss of the two crew members.
He said an initial report was that the ship lost power due to a mechanical problem, though officials cautioned that the information was preliminary. Videos show a tugboat was close to the Cuauhtemoc at the time of the crash.
As midnight approached, the broken boat was moved slowly up the East River, going under and past the Manhattan Bridge, aided by a series of tugboats, before docking at a pier. Onlookers continued to gather on the waterfront to watch the spectacle.
Each year the Cuauhtemoc sets out at the end of classes at the naval military school to finish cadets' training. This year it left the Mexican port of Acapulco, on the Pacific coast, on April 6, the navy said.
With the help of tools like hot-wire anemometers (measure turbulence), pressure sensors, and far-field microphones to capture both the way air moved through the engine and the noise it produced. What they discovered was that the irritating sound wasn’t just about volume. It had to do with how the sound energy was spread out.
They identified two types of noise patterns. First, called duct haystacking, happened during cruising, when the engine was at low thrust. Here, the boundary layer air flows gently into the engine and interacts mostly with the duct, the tube around the fan. This created a fuzzy sound.
The second noise, called fan haystacking, occurred during take-off, when the engine worked at high thrust. Powerful suction pulled in rougher, more chaotic air, which slammed into a large portion of the spinning fan blades. The result was even more scattered and harsh noise.
These findings can help engineers trace each noise pattern back to its aerodynamic cause and allow them to design engines that truly sound quieter to people, not just look quiet on paper. “By linking turbulent flow ingestion patterns to how people perceive noise, we are giving engineers the tools to design future aircraft that truly sound as quiet as they look,” Feroz Ahmed, lead researcher, said.
According to a report recently published by Lawrence Livermore National Laboratory (LLNL), the NIF had achieved ignition for the seventh time in February 2025, and the latest achievement seems to have emerged from the eighth time. However, there is no official communique on this matter.
“On Feb. 23, 2025, NIF achieved ignition for the seventh time while setting a new target gain record (energy yield vs. energy on target) of 2.44. The 2.05 MJ shot yielded 5.0 MJ, highest for a 2.05 MJ shot and the second highest overall,” LLNL had noted earlier.
Progress over previous milestone
This surge in energy production marks a pivotal development, substantially building upon the NIF’s landmark 2022 success.
It was then that scientists first achieved a controlled fusion reaction that demonstrably released more energy (3.15 megajoules) than the 2.05 megajoules of laser energy directly applied to the fuel target. This was the first controlled fusion experiment to do so.
Despite the reported increases in yield, the energy produced is not sufficient for grid-scale power generation, nor does it offset the total energy consumed by the NIF to conduct the experiments.
Inertial confinement is one of the primary methods being researched globally to achieve controlled fusion. The other main approach, magnetic confinement, uses strong magnetic fields to contain and compress plasma to induce fusion.
“For the last six decades, LLNL researchers and their colleagues have been working to achieve one of the most challenging goals in all of science and a primary objective of NIF: fusion ignition,” remarked the Lab.
The facility was not designed for continuous power output; for example, the 2022 net-positive shot required approximately 300 megajoules to operate the laser system alone. The experiments serve as continued demonstrations of controlled nuclear fusion principles.
Mexican navy ship crashes into Brooklyn Bridge killing two crew members
In a post on X, New York City mayor Eric Adams stated that preliminary inspection confirmed the bridge sustained no damage and has been reopened to the public.
A large Mexican navy tall ship on an international goodwill visit to New York struck the Brooklyn Bridge late Saturday, snapping all three of its towering masts in a dramatic crash that left two crew members dead and at least 19 injured—including two in critical condition.
While the exact cause of the collision is under investigation, a few reports have suggested that the ship faced a power outage causing it to veer off its path. In a post on social media platform X, New York City mayor Eric Adams stated that preliminary inspection confirmed the bridge sustained no damage and has since reopened to the public.
“Earlier tonight, the Mexican Navy tall ship Cuauhtémoc lost power and crashed into the Brooklyn Bridge. At this time, of the 277 on board, 19 sustained injuries, 2 of which remain in critical condition, and 2 more have sadly passed away from their injuries,” NYC mayor Adams posted.
The Mexican navy stated on X that the Cuauhtémoc is an academy training ship. It confirmed 22 injuries, with 19 requiring medical care. The country’s President Claudia Sheinbaum Pardo expressed condolences for the two crew members who died in the incident, offering support to their families.
Telegram Founder Says he Rejected Request to 'Silence' Conservative Voices in Romania
Telegram founder says he rejected a Western request to 'silence' conservative voices in Romania
The founder of the Telegram messaging app, Pavel Durov, said on Sunday he had refused a request by a Western government, which he did not name, to "silence" conservative voices in Romania ahead of a presidential election run-off there.
Romanians were voting on Sunday in a run-off that pits a hard-right eurosceptic against a centrist independent. The outcome of the contest will have significant implications for both Romania's struggling economy and European Union unity.
"You can't 'defend democracy' by destroying democracy. You can't 'fight election interference' by interfering with elections. You either have freedom of speech and fair elections — or you don't. And the Romanian people deserve both," he said.
Durov, born in Russia but now a French national, was detained last year in France amid an investigation into crimes related to child pornography, drug trafficking and fraudulent transactions associated with the app.
In March Durov, who denied any wrongdoing, returned to Dubai. Telegram is widely used in Russia, including by the authorities and officials, and in Eastern Europe.
Federal Officials Launch Investigation Into Mexican Tall Ship That Struck Brooklyn Bridge
Federal transportation officials have launched an investigation into why a Mexican navy tall ship hit the Brooklyn Bridge in a collision that snapped the vessel's three masts, killed two crew members and left some sailors dangling from harnesses high in the air.
The ship known as the Cuauhtemoc was visiting New York on a global goodwill tour when the accident occurred Saturday evening. The vessel could be seen in multiple eyewitness videos traveling swiftly in reverse toward the bridge near the Brooklyn side of the East River. Then its three masts struck the bridge and snapped, one by one, as the ship kept moving.
The vessel, which was flying a giant Mexican flag and had 277 people aboard, then drifted into a pier on the riverbank as onlookers scrambled away.
Sailors could be seen aloft in the rigging on the damaged masts but, remarkably, no one fell into the water, officials said.
Sydney Neidell and Lily Katz told The Associated Press they were sitting outside to watch the sunset when they saw the vessel strike the bridge.
“We saw someone dangling, and I couldn’t tell if it was just blurry or my eyes. And we were able to zoom in on our phone, and there was someone dangling from the harness from the top for like at least like 15 minutes before they were able to rescue them,” Katz said.
Just before the collision, Nick Corso took his phone out to capture the backdrop of the ship and the bridge against a sunset, Instead, he heard what sounded like the loud snapping of a “big twig." Several more snaps followed.
People in his vicinity began running and “pandemonium” erupted aboard the ship, he said. He later saw a handful of people dangling from a mast.
“I didn’t know what to think, I was like, is this a movie?” he said.
The Mexican navy said in a post on the social platform X that the Cuauhtemoc was a training vessel. It said a total of 22 people were injured.
Mexican President Claudia Sheinbaum lamented the loss of the two crew members.
He said an initial report was that the ship lost power due to a mechanical problem, though officials cautioned that the information was preliminary. Videos show a tugboat was close to the Cuauhtemoc at the time of the crash.
As midnight approached, the broken boat was moved slowly up the East River, going under and past the Manhattan Bridge, aided by a series of tugboats, before docking at a pier. Onlookers continued to gather on the waterfront to watch the spectacle.
Each year the Cuauhtemoc sets out at the end of classes at the naval military school to finish cadets' training. This year it left the Mexican port of Acapulco, on the Pacific coast, on April 6, the navy said.