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787 Nitrogen Generation System in plain English: pulls air from the forward cargo area, strips oxygen, sends Nitrogen Enriched Air to the fuel tanks so the vapor can’t burn. Keeps O2 under 11.9% up to 10k ft, rises with altitude to ~15% at 45k, and holds inert for 24... show more

Fahad Naim

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64,813 просмотров • 2 месяцев назад •via X (Twitter)

Наука и технологии Новости и политика Образование

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SunExpress Boeing 737-800 suffered a left main landing gear collapse while taxiing for departure at Antalya Airport, Türkiye yesterday. The good news? It happened during taxi. You don’t even want to imagine it occurring during takeoff or landing. A few things could be at play here: The main landing gear shock strut relies on hydraulic fluid and compressed dry air (or nitrogen) to absorb and control loads. The oil charging valve is located near the wheels, while the gas valve sits higher up. A failure in either system could compromise strut integrity. There’s also the Proximity Switch Electronics Unit (PSEU), which monitors the air/ground system and landing gear compression sensors. Aircraft was recovered by Aircraft Recovery Lift Bags (specialized inflatable devices).

SunExpress Boeing 737-800 suffered a left main landing gear collapse while taxiing for departure at Antalya Airport, Türkiye yesterday. The good news? It happened during taxi. You don’t even want to imagine it occurring during takeoff or landing. A few things could be at play here: The main landing gear shock strut relies on hydraulic fluid and compressed dry air (or nitrogen) to absorb and control loads. The oil charging valve is located near the wheels, while the gas valve sits higher up. A failure in either system could compromise strut integrity. There’s also the Proximity Switch Electronics Unit (PSEU), which monitors the air/ground system and landing gear compression sensors. Aircraft was recovered by Aircraft Recovery Lift Bags (specialized inflatable devices).

Turbine Traveller

63,355 просмотров • 7 месяцев назад

Before LNG is loaded into a tank, the tank must be properly prepared through a series of controlled stages. This preparation is critical to ensure safety and to prevent damage due to extreme temperatures. An LNG tank is fitted with different lines, each serving a specific purpose: filling lines, spray lines, discharge lines, and pumps. The first stage is drying. The tank may contain humid air, which can lead to ice formation at low temperatures. To prevent this, dry air is introduced from the bottom of the tank through the filling lines to displace the moist air. Next is inerting. After drying, inert gas is introduced into the tank to purge out the dry air. This step is important to eliminate oxygen and reduce the risk of forming flammable gas mixtures. The third stage is gassing-up (vaporizing). Since inert gas contains carbon dioxide, which can freeze at low temperatures, it must be removed. Warm LNG vapor is introduced through the spray lines to displace the inert gas and prepare the tank for cooling. Then comes cooling down, which is a critical stage. The tank must be gradually cooled to avoid thermal stress that could damage the structure. Cold LNG is sprayed into the tank through spray nozzles, bringing the temperature down to about -110°C to -130°C. Finally, the loading (filling) stage begins. At this point, the tank is ready to safely receive LNG, and the cargo is loaded through the filling lines. In simple terms, the process moves from removing moisture, to removing oxygen, to introducing gas, then cooling the tank, and finally loading the LNG.

Before LNG is loaded into a tank, the tank must be properly prepared through a series of controlled stages. This preparation is critical to ensure safety and to prevent damage due to extreme temperatures. An LNG tank is fitted with different lines, each serving a specific purpose: filling lines, spray lines, discharge lines, and pumps. The first stage is drying. The tank may contain humid air, which can lead to ice formation at low temperatures. To prevent this, dry air is introduced from the bottom of the tank through the filling lines to displace the moist air. Next is inerting. After drying, inert gas is introduced into the tank to purge out the dry air. This step is important to eliminate oxygen and reduce the risk of forming flammable gas mixtures. The third stage is gassing-up (vaporizing). Since inert gas contains carbon dioxide, which can freeze at low temperatures, it must be removed. Warm LNG vapor is introduced through the spray lines to displace the inert gas and prepare the tank for cooling. Then comes cooling down, which is a critical stage. The tank must be gradually cooled to avoid thermal stress that could damage the structure. Cold LNG is sprayed into the tank through spray nozzles, bringing the temperature down to about -110°C to -130°C. Finally, the loading (filling) stage begins. At this point, the tank is ready to safely receive LNG, and the cargo is loaded through the filling lines. In simple terms, the process moves from removing moisture, to removing oxygen, to introducing gas, then cooling the tank, and finally loading the LNG.

PortHarcourt Sailor

178,354 просмотров • 5 месяцев назад

Out on the ramp with the A350 today, taking a close look at the nose landing gear safety pin setup. There are 3 holes visible on the mechanism, all different diameters. Only one is the right size and spot where the full safety/ground lock pin inserts completely to lock the gear solid. The others are for pivots and such, so the pin won't seat fully. And importantly, no covers on any of them.... That's by design, keeps everything easy to inspect, access, and work with during maintenance.. One wrong hole and things can go sideways (seen it on other types like the 787 before mods). Always double-check by eye and feel for that solid engagement.

Out on the ramp with the A350 today, taking a close look at the nose landing gear safety pin setup. There are 3 holes visible on the mechanism, all different diameters. Only one is the right size and spot where the full safety/ground lock pin inserts completely to lock the gear solid. The others are for pivots and such, so the pin won't seat fully. And importantly, no covers on any of them.... That's by design, keeps everything easy to inspect, access, and work with during maintenance.. One wrong hole and things can go sideways (seen it on other types like the 787 before mods). Always double-check by eye and feel for that solid engagement.

Fahad Naim

268,615 просмотров • 3 месяцев назад

A farmer warns the Strait of Hormuz crisis is already driving up the cost of fertilizer and fuel. And says Americans should expect higher prices long term because of it. “Nitrogen in general and fuel both spiked because of the war.” “We’ve exposed ourselves pretty heavily to whoever it is that produces our nitrogen.” “We’re two months away from where we usually lock in nitrogen at a cheaper price.” “It’s through the roof right now because of this Strait of Hormuz deal.” “We’re anticipating not only higher prices right now, but probably higher prices for quite a long time.” “Everything I produce on this farm gets shipped out by truck.” “Diesel fuel down the road's $5.70, and those trucks get about six miles to the gallon.” “This is gonna inevitably affect everyone.”

A farmer warns the Strait of Hormuz crisis is already driving up the cost of fertilizer and fuel. And says Americans should expect higher prices long term because of it. “Nitrogen in general and fuel both spiked because of the war.” “We’ve exposed ourselves pretty heavily to whoever it is that produces our nitrogen.” “We’re two months away from where we usually lock in nitrogen at a cheaper price.” “It’s through the roof right now because of this Strait of Hormuz deal.” “We’re anticipating not only higher prices right now, but probably higher prices for quite a long time.” “Everything I produce on this farm gets shipped out by truck.” “Diesel fuel down the road's $5.70, and those trucks get about six miles to the gallon.” “This is gonna inevitably affect everyone.”

Farm Action

20,637 просмотров • 3 месяцев назад

The war in Iran is already pushing up energy prices at home and it could soon drive up costs higher for everything from air travel to groceries. What You Need to Know is streaming on Disney+.

The war in Iran is already pushing up energy prices at home and it could soon drive up costs higher for everything from air travel to groceries. What You Need to Know is streaming on Disney+.

ABC News

18,235 просмотров • 6 месяцев назад

Sounds like the US Air Force E-7 Wedgetail platform purchase is back on track. ⤵️ "The E-7 is the replacement for the E-3 [AWACS]..The E-2 [D] is a great platform but it is not in the same class. We have 2 Rapid Prototype jets on contract and funded. We have contracts in place for five more EMD platforms and the Department is committing to work with you [Congress] to figure out how to adjust the 2027 budget submission to fund the E-7 [procurement] and work the 28 (FY-2028) going forward. " ~ Dr. Troy Meink Secretary of the US Air Force (Apr 30, 2026)

Sounds like the US Air Force E-7 Wedgetail platform purchase is back on track. ⤵️ "The E-7 is the replacement for the E-3 [AWACS]..The E-2 [D] is a great platform but it is not in the same class. We have 2 Rapid Prototype jets on contract and funded. We have contracts in place for five more EMD platforms and the Department is committing to work with you [Congress] to figure out how to adjust the 2027 budget submission to fund the E-7 [procurement] and work the 28 (FY-2028) going forward. " ~ Dr. Troy Meink Secretary of the US Air Force (Apr 30, 2026)

Air-Power | MIL-STD

36,736 просмотров • 4 месяцев назад

Good Morning you lovely people! Back to work after a lovely break with the family. Got a lovely breakfast at Dinos today. Nice and busy. I’m working the fish stall today, got mattresses going out on delivered and I’m looking forward to getting back into the swing of things. We live in uncertainty at the moment with the cost of materials, fuel and everything going up. Politicians don’t seem to care about all us lot going to work day in day out keeping this beautiful country going. But please don’t give up, tough times don’t last but tough people do. We are all feeling the burn, but we stick the kettle on in a crisis and keep on moving forward. Sending love to you all. Have an absolute blinder. Now time to buy some seafood. Bosh❤️

Good Morning you lovely people! Back to work after a lovely break with the family. Got a lovely breakfast at Dinos today. Nice and busy. I’m working the fish stall today, got mattresses going out on delivered and I’m looking forward to getting back into the swing of things. We live in uncertainty at the moment with the cost of materials, fuel and everything going up. Politicians don’t seem to care about all us lot going to work day in day out keeping this beautiful country going. But please don’t give up, tough times don’t last but tough people do. We are all feeling the burn, but we stick the kettle on in a crisis and keep on moving forward. Sending love to you all. Have an absolute blinder. Now time to buy some seafood. Bosh❤️

Thomas Skinner ⚒

89,238 просмотров • 5 месяцев назад

For years the prediction was the same. The dollar is about to collapse. It keeps not happening. Here is the piece most people miss. Dollar strain and record stock markets are not a contradiction. They are two different things. The strain is real. But so is this. Global capital keeps flowing into US assets, because out of the whole world, this is where the growth and the liquidity are. And to buy US assets, you need US dollars. So the flows themselves put a bid under the dollar. Money comes in, it has to become dollars first, and that keeps the dollar strong against everything else. That is why the dollar has not fallen to its death, no matter how many times it was called. The demand for dollars is not sentiment. It is built into the act of buying America.

For years the prediction was the same. The dollar is about to collapse. It keeps not happening. Here is the piece most people miss. Dollar strain and record stock markets are not a contradiction. They are two different things. The strain is real. But so is this. Global capital keeps flowing into US assets, because out of the whole world, this is where the growth and the liquidity are. And to buy US assets, you need US dollars. So the flows themselves put a bid under the dollar. Money comes in, it has to become dollars first, and that keeps the dollar strong against everything else. That is why the dollar has not fallen to its death, no matter how many times it was called. The demand for dollars is not sentiment. It is built into the act of buying America.

Jeffrey P. Snider

22,132 просмотров • 1 месяц назад

Tens of thousand of internally displaced people are currently crossing from the South of Gaza back to their homes in the North, some laying eyes on their cities for the first time in 15 months. And finally, after days of waiting and finding a place in line, at 7am today Al-Rashid Street was opened for pedestrians to make the trek home. We are so honored to be there every step of the way. The Sameer Project has been planning for this moment. Planning to support, help, and celebrate those retuning. We supplied water tanks on a truck to those going on foot, 8,000 liters of fresh drinking water to prepare those for their journey. We can’t stress enough how much we need you right now. We need to prepare for the reported 650,000 Palestinians retuning to the northern area. Water, food, additional necessary aid, we have the process and the systems to support. Please contribute to allow us to help.

Tens of thousand of internally displaced people are currently crossing from the South of Gaza back to their homes in the North, some laying eyes on their cities for the first time in 15 months. And finally, after days of waiting and finding a place in line, at 7am today Al-Rashid Street was opened for pedestrians to make the trek home. We are so honored to be there every step of the way. The Sameer Project has been planning for this moment. Planning to support, help, and celebrate those retuning. We supplied water tanks on a truck to those going on foot, 8,000 liters of fresh drinking water to prepare those for their journey. We can’t stress enough how much we need you right now. We need to prepare for the reported 650,000 Palestinians retuning to the northern area. Water, food, additional necessary aid, we have the process and the systems to support. Please contribute to allow us to help.

The Sameer Project

54,118 просмотров • 1 год назад

Sean Duffy slams Pete Buttigieg for failing to fix the FAA and focusing on pronouns instead of safety: "Let’s go over Pothole Pete’s record. There were 85 near misses in the Potomac before the DCA air crash — Pete did nothing. He spent $80 billion on DEI and climate change initiatives. He lowered standards for training at the FAA. He focused on pronouns at the FAA but never worked to fix the air traffic control system or bring more air traffic controllers into it. Now he’s trying to rewrite his record because he wants to run for President — but the truth is, he barely showed up at the DOT."

Sean Duffy slams Pete Buttigieg for failing to fix the FAA and focusing on pronouns instead of safety: "Let’s go over Pothole Pete’s record. There were 85 near misses in the Potomac before the DCA air crash — Pete did nothing. He spent $80 billion on DEI and climate change initiatives. He lowered standards for training at the FAA. He focused on pronouns at the FAA but never worked to fix the air traffic control system or bring more air traffic controllers into it. Now he’s trying to rewrite his record because he wants to run for President — but the truth is, he barely showed up at the DOT."

Sean Hannity 🇺🇸

164,113 просмотров • 10 месяцев назад

This man from the PREMIER STORE on the Grange Estate in Grimsby has just donated 36 personal safety devices after seeing my appeal to help women and shop workers feel safer walking through town 💙 just popped in after patrolling the town this morning to pick them up 20 of these alarms are going straight out to a girls football team after a parent contacted me late last night with safety issues in the area these children practice 💔 police need to listen to their concerns and do a lot more I have another 20 for all female staff at a fast food restaurant and still need to supply another newsagents in the town If you would like to purchase a pkt of personal safety devices for me to give out on your behalf to workers and women in my area the Amazon wishlist appeal link is 👇🏻 thank you so much for your support. Nearly 400 alarms given out so far thanks to you 💙

This man from the PREMIER STORE on the Grange Estate in Grimsby has just donated 36 personal safety devices after seeing my appeal to help women and shop workers feel safer walking through town 💙 just popped in after patrolling the town this morning to pick them up 20 of these alarms are going straight out to a girls football team after a parent contacted me late last night with safety issues in the area these children practice 💔 police need to listen to their concerns and do a lot more I have another 20 for all female staff at a fast food restaurant and still need to supply another newsagents in the town If you would like to purchase a pkt of personal safety devices for me to give out on your behalf to workers and women in my area the Amazon wishlist appeal link is 👇🏻 thank you so much for your support. Nearly 400 alarms given out so far thanks to you 💙

Active Patriot

119,553 просмотров • 7 месяцев назад

After years in the making, I’m so excited to share our redesigned Figma, stripping back the interface to really focus on your work, and introduce a broad range of usability improvements across the system. We’re rolling out in beta starting today at Config, and I can’t wait for you to try it.

After years in the making, I’m so excited to share our redesigned Figma, stripping back the interface to really focus on your work, and introduce a broad range of usability improvements across the system. We’re rolling out in beta starting today at Config, and I can’t wait for you to try it.

Ryhan

145,278 просмотров • 2 лет назад

As the CFM LEAP engine shuts down, you can hear the distinctive “whoosh” sound followed by a gush of air. That is the Reverse Bleed System (RBS) at work. During normal operation, a significant amount of fuel remains unpurged in the system after engine shutdown. This residual fuel, located near or within the hot section, vaporizes due to high temperatures and deposits carbon (coke) on the fuel nozzles. Over time, nozzle coking leads to several operational and maintenance issues, including loss of thrust, reduced engine efficiency due to incomplete combustion, accelerated deterioration of hot-section components (combustor and High-Pressure Turbine), engine start failures, potential engine stalls, and increased unscheduled engine removals. The Reverse Bleed System (RBS) prevents fuel nozzle coking by automatically introducing cool air from the core compartment into the engine core flowpath after shutdown. This effectively lowers the fuel nozzle temperature below the coking threshold. RBS can operate for a maximum of 1 hour, and its effectiveness depends on ambient conditions (especially ambient temperature) and the total duration it runs. The last flight of the day contributes the most to fuel nozzle coke accumulation because of the extended dwell time at the gate. By actively managing post-shutdown thermal conditions, RBS significantly reduces coking-related problems, improves engine reliability, and lowers long-term maintenance costs. Now, also coming soon to the CFM56

As the CFM LEAP engine shuts down, you can hear the distinctive “whoosh” sound followed by a gush of air. That is the Reverse Bleed System (RBS) at work. During normal operation, a significant amount of fuel remains unpurged in the system after engine shutdown. This residual fuel, located near or within the hot section, vaporizes due to high temperatures and deposits carbon (coke) on the fuel nozzles. Over time, nozzle coking leads to several operational and maintenance issues, including loss of thrust, reduced engine efficiency due to incomplete combustion, accelerated deterioration of hot-section components (combustor and High-Pressure Turbine), engine start failures, potential engine stalls, and increased unscheduled engine removals. The Reverse Bleed System (RBS) prevents fuel nozzle coking by automatically introducing cool air from the core compartment into the engine core flowpath after shutdown. This effectively lowers the fuel nozzle temperature below the coking threshold. RBS can operate for a maximum of 1 hour, and its effectiveness depends on ambient conditions (especially ambient temperature) and the total duration it runs. The last flight of the day contributes the most to fuel nozzle coke accumulation because of the extended dwell time at the gate. By actively managing post-shutdown thermal conditions, RBS significantly reduces coking-related problems, improves engine reliability, and lowers long-term maintenance costs. Now, also coming soon to the CFM56

Arjun Singh

53,644 просмотров • 4 месяцев назад

Day 144, orbit 2233 — Many of you noticed the pink glow in the recent timelapses done in Columbus… That’s thanks to Veggie 🌱, the International Space Station’s vegetable production system — our little space garden! The Veggie chamber glows magenta-pink because it emits a light spectrum that’s perfect for plant growth! During Expedition 74, Veggie hosted the Veg-06 experiment, with two main goals: to study how alfalfa plants and beneficial bacteria work together in microgravity to capture nitrogen from the air and turn it into nutrients plants can use… and to look at how lignin – the material that helps plants stand upright on Earth – changes in space. The alfafa plants 🌿 were successfully grown – watered and nurtured by all of us – then harvested (aerial parts and roots) and stowed in a freezer. They were sent back to Earth for further analysis on board the CRS SpX‑34 cargo Dragon. For us, working on Veggie is a real taste of home – a reminder of what a garden looks and smells like. There’s something very special about watching the plants grow and caring for them day after day. I loved working on this experiment 💚 It is clear that being able to grow fresh food 🌶 in space will be crucial for long exploration missions, not just for nutrition, but for crew morale as well. A better understanding of nitrogen fixation is also key to improving soil quality on Earth, while studying lignin may benefit agriculture and forestry in the long run. Go science! 🎥 European Space Agency / NASA #εpsilon • International Space Station • NASAKennedy • NASAJohnson • European Space Agencyspaceflight

Day 144, orbit 2233 — Many of you noticed the pink glow in the recent timelapses done in Columbus… That’s thanks to Veggie 🌱, the International Space Station’s vegetable production system — our little space garden! The Veggie chamber glows magenta-pink because it emits a light spectrum that’s perfect for plant growth! During Expedition 74, Veggie hosted the Veg-06 experiment, with two main goals: to study how alfalfa plants and beneficial bacteria work together in microgravity to capture nitrogen from the air and turn it into nutrients plants can use… and to look at how lignin – the material that helps plants stand upright on Earth – changes in space. The alfafa plants 🌿 were successfully grown – watered and nurtured by all of us – then harvested (aerial parts and roots) and stowed in a freezer. They were sent back to Earth for further analysis on board the CRS SpX‑34 cargo Dragon. For us, working on Veggie is a real taste of home – a reminder of what a garden looks and smells like. There’s something very special about watching the plants grow and caring for them day after day. I loved working on this experiment 💚 It is clear that being able to grow fresh food 🌶 in space will be crucial for long exploration missions, not just for nutrition, but for crew morale as well. A better understanding of nitrogen fixation is also key to improving soil quality on Earth, while studying lignin may benefit agriculture and forestry in the long run. Go science! 🎥 European Space Agency / NASA #εpsilon • International Space Station • NASAKennedy • NASAJohnson • European Space Agencyspaceflight

Adenot Sophie

86,912 просмотров • 2 месяцев назад

the lyrics 🥺🥺🥺🥺🥺 “Oh I’m still so young and working day and night Man ain’t it so wild? Already like I’m running out of time World on fast forward Just trying to breathe I’m tryna keep up with something I can’t see I don’t know why but somehow it doesn’t feel right, feel right Thinking ’bout our hopes and dreams, yeah At the cost of you and me” the world is indeed too fast for some of us, living our busy life without realising it costs our own well beingㅠ

the lyrics 🥺🥺🥺🥺🥺 “Oh I’m still so young and working day and night Man ain’t it so wild? Already like I’m running out of time World on fast forward Just trying to breathe I’m tryna keep up with something I can’t see I don’t know why but somehow it doesn’t feel right, feel right Thinking ’bout our hopes and dreams, yeah At the cost of you and me” the world is indeed too fast for some of us, living our busy life without realising it costs our own well beingㅠ

댕꾸 ◡̈

58,845 просмотров • 12 дней назад

Remember George Orwell's book 1984? I think Russia used it as a textbook. Head of Russia’s Krasnodar region described the fires in Tuapse as "localized flare-ups" and invited tourists to visit the area. He said Ukrainian drones had special fuel tanks attached to create dramatic flames "for the camera." The information was later deleted from the media outlet’s website, but the publication was preserved in a web archive. Kondratyev claimed there had been no "serious strikes" on the region, and that the smoke and so-called "oil rain" were caused by Ukrainian forces attaching "fuel tanks with mazut" to drones to create dramatic flames "for the camera." In reality, the Tuapse oil refinery was struck by drones three times in two weeks. A plume of smoke was visible from space, and petroleum products leaked into the Tuapse River and the Black Sea. Kondratyev praised the work of air defense and electronic warfare units, saying the military had prevented more serious consequences. He assured that the situation was fully under control and even commended the prosecutor’s office for planting trees against the backdrop of smoke from the refinery.

Remember George Orwell's book 1984? I think Russia used it as a textbook. Head of Russia’s Krasnodar region described the fires in Tuapse as "localized flare-ups" and invited tourists to visit the area. He said Ukrainian drones had special fuel tanks attached to create dramatic flames "for the camera." The information was later deleted from the media outlet’s website, but the publication was preserved in a web archive. Kondratyev claimed there had been no "serious strikes" on the region, and that the smoke and so-called "oil rain" were caused by Ukrainian forces attaching "fuel tanks with mazut" to drones to create dramatic flames "for the camera." In reality, the Tuapse oil refinery was struck by drones three times in two weeks. A plume of smoke was visible from space, and petroleum products leaked into the Tuapse River and the Black Sea. Kondratyev praised the work of air defense and electronic warfare units, saying the military had prevented more serious consequences. He assured that the situation was fully under control and even commended the prosecutor’s office for planting trees against the backdrop of smoke from the refinery.

Anton Gerashchenko

49,900 просмотров • 4 месяцев назад