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The F-16’s afterburner boosts thrust by injecting additional fuel into the exhaust stream after the gases have already passed through the turbine. This creates a second stage of combustion that dramatically increases engine power. In normal operation, the engine compresses incoming air, burns it in the main combustion chamber,...

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aircraftmaintenancengineer

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227,987 просмотров • 8 месяцев назад •via X (Twitter)

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Imagine standing a few meters behind this... 😳🔥 This is the Klimov RD-33 powering the legendary MiG-29 Fulcrum during a full afterburner test. Watch as the engine spools up, fuel ignites in the exhaust, and a massive plume of fire erupts from the nozzle. With 81.3 kN (18,280 lbf) of thrust in afterburner, the RD-33 transformed the MiG-29 into one of the most agile fighters of the Cold War—capable of blistering acceleration and spectacular high-alpha maneuvers. Pure jet engine fury.
1:02

Imagine standing a few meters behind this... 😳🔥 This is the Klimov RD-33 powering the legendary MiG-29 Fulcrum during a full afterburner test. Watch as the engine spools up, fuel ignites in the exhaust, and a massive plume of fire erupts from the nozzle. With 81.3 kN (18,280 lbf) of thrust in afterburner, the RD-33 transformed the MiG-29 into one of the most agile fighters of the Cold War—capable of blistering acceleration and spectacular high-alpha maneuvers. Pure jet engine fury.

Airforce Geek

80,070 просмотров • 1 месяц назад

A Pratt & Whitney F100 turbofan is one of the most successful fighter jet engines ever built. First run was in 1972, it still powers the F-15 and F-16 more than 50 years later. Over 7,200 engines have been built, collectively logging 32+ million flight hours. At full afterburner, it produces up to 129 kN or 29,000 lb of thrust while burning roughly 800-900 litres of jet fuel every minute. The afterburner, it's a second combustion stage that ignites fuel in the exhaust stream to generate maximum combat thrust. This test cell isn't checking if the engine starts. It's measuring vibration, temperatures, pressures, fuel flow, and thrust while a machine producing 29,000 pounds of force is bolted to the ground. What here looks like a routine engine test is actually one of the most demanding demonstrations of precision engineering in aerospace, Each brand new F100 engine is worth roughly $5-8 million, reflecting five decades of continuous refinement in fighter propulsion. 🎥kaydenh0dge
0:56

A Pratt & Whitney F100 turbofan is one of the most successful fighter jet engines ever built. First run was in 1972, it still powers the F-15 and F-16 more than 50 years later. Over 7,200 engines have been built, collectively logging 32+ million flight hours. At full afterburner, it produces up to 129 kN or 29,000 lb of thrust while burning roughly 800-900 litres of jet fuel every minute. The afterburner, it's a second combustion stage that ignites fuel in the exhaust stream to generate maximum combat thrust. This test cell isn't checking if the engine starts. It's measuring vibration, temperatures, pressures, fuel flow, and thrust while a machine producing 29,000 pounds of force is bolted to the ground. What here looks like a routine engine test is actually one of the most demanding demonstrations of precision engineering in aerospace, Each brand new F100 engine is worth roughly $5-8 million, reflecting five decades of continuous refinement in fighter propulsion. 🎥kaydenh0dge

Ammanichanda

127,116 просмотров • 1 месяц назад

Good news on the jet engine project ✅: I redesigned the exhaust system again to prioritize cooling, thrust & the afterburner sequence all together, it now works better✅, no red hot situation on the exhaust at all✅ The new design also reduces pressure on the turbine on AB mode✅ This test was done with gas for the main engine running at 50% power, then liquid kerosene for the AB🔥. I wish to change the fuel nozzles on the main burner to a more powerful one next week, then we'll do this test again close to 100% power which will be louder & much more violent ⚡️ After that, we'll go straight to a runway & let this beast run🚀 #Zedora #madeinEbonyi 🇳🇬
2:45

Good news on the jet engine project ✅: I redesigned the exhaust system again to prioritize cooling, thrust & the afterburner sequence all together, it now works better✅, no red hot situation on the exhaust at all✅ The new design also reduces pressure on the turbine on AB mode✅ This test was done with gas for the main engine running at 50% power, then liquid kerosene for the AB🔥. I wish to change the fuel nozzles on the main burner to a more powerful one next week, then we'll do this test again close to 100% power which will be louder & much more violent ⚡️ After that, we'll go straight to a runway & let this beast run🚀 #Zedora #madeinEbonyi 🇳🇬

Ziko Abara

22,396 просмотров • 1 год 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
0:45

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

53,598 просмотров • 3 месяцев назад

This is not a model engine pretending to be a jet engine. It is actually a complete gas turbine shrunk onto a test bench. Inside this small machine are a compressor, combustion chamber, turbine wheel, fuel system and digital engine controller, the same basic physics used in aircraft engines. At full power, this turbine reaches nearly 98,000 RPM over 1,600 revolutions every second while producing 280 N of thrust, equivalent to roughly 28 kg of pushing force. At nearly 98,000 RPM, even a tiny imbalance can destroy the turbine. The combustion chamber must survive exhaust temperatures approaching 700°C, while the fuel system continuously manages a core flame powerful enough to create 280 N of thrust without losing combustion stability. A high-end RC turbine can cost $7,000-20,000+, despite fitting on a workbench. It is nowhere near the complexity of a modern military turbofan with thousands of components, afterburners and advanced cooling systems. But that is what makes it fascinating, engineers have compressed the core mechanisms of a jet engine compression, combustion and expansion, into a machine small enough to hold. 📹 RC hobby
1:02

This is not a model engine pretending to be a jet engine. It is actually a complete gas turbine shrunk onto a test bench. Inside this small machine are a compressor, combustion chamber, turbine wheel, fuel system and digital engine controller, the same basic physics used in aircraft engines. At full power, this turbine reaches nearly 98,000 RPM over 1,600 revolutions every second while producing 280 N of thrust, equivalent to roughly 28 kg of pushing force. At nearly 98,000 RPM, even a tiny imbalance can destroy the turbine. The combustion chamber must survive exhaust temperatures approaching 700°C, while the fuel system continuously manages a core flame powerful enough to create 280 N of thrust without losing combustion stability. A high-end RC turbine can cost $7,000-20,000+, despite fitting on a workbench. It is nowhere near the complexity of a modern military turbofan with thousands of components, afterburners and advanced cooling systems. But that is what makes it fascinating, engineers have compressed the core mechanisms of a jet engine compression, combustion and expansion, into a machine small enough to hold. 📹 RC hobby

Ammanichanda

11,732 просмотров • 1 месяц назад

🔧✈️ Today we are performing a boroscope inspection on the High Pressure Turbine (HPT) blades and nozzles, combustion chamber and fuel nozzles. In this video I explain what we see when we have to enter the engine with a boroscope. I hope this video is informative for you! 📸 by ig/nextgenerationmechanic
1:46

🔧✈️ Today we are performing a boroscope inspection on the High Pressure Turbine (HPT) blades and nozzles, combustion chamber and fuel nozzles. In this video I explain what we see when we have to enter the engine with a boroscope. I hope this video is informative for you! 📸 by ig/nextgenerationmechanic

aircraftmaintenancengineer

15,544 просмотров • 1 год назад

A pickle jar can function as a tiny jet engine. The setup is simple: a glass jar with a small hole in the lid holds a volatile fuel like methanol, which evaporates to create a fuel and air mixture inside. A flame brought to the hole ignites it, and the cycle begins. Here is what happens in each pulse. Combustion sends a sharp pressure spike through the jar, forcing hot gas out the lid hole as thrust. The escaping gas creates a brief partial vacuum inside, which pulls fresh air back in through the same hole. Residual heat ignites the new mixture automatically, and the cycle repeats dozens to hundreds of times per second. The jar and hole act as a resonant cavity, which is why it pulses instead of burning steadily. A single opening cannot handle exhaust and intake at the same time, so the system locks into a natural rhythm. It produces almost no real thrust, but it is a clear window into how actual pulsejet engines work, and the physics on display are the same ones used in real aerospace propulsion. Follow for more!
0:20

A pickle jar can function as a tiny jet engine. The setup is simple: a glass jar with a small hole in the lid holds a volatile fuel like methanol, which evaporates to create a fuel and air mixture inside. A flame brought to the hole ignites it, and the cycle begins. Here is what happens in each pulse. Combustion sends a sharp pressure spike through the jar, forcing hot gas out the lid hole as thrust. The escaping gas creates a brief partial vacuum inside, which pulls fresh air back in through the same hole. Residual heat ignites the new mixture automatically, and the cycle repeats dozens to hundreds of times per second. The jar and hole act as a resonant cavity, which is why it pulses instead of burning steadily. A single opening cannot handle exhaust and intake at the same time, so the system locks into a natural rhythm. It produces almost no real thrust, but it is a clear window into how actual pulsejet engines work, and the physics on display are the same ones used in real aerospace propulsion. Follow for more!

Mechanical Knowledge

131,156 просмотров • 5 месяцев назад

The SR-71 Blackbird converts supersonic air to subsonic speeds using a movable, conical "spike" in the engine inlet that generates a series of shock waves, slowing air from over Mach 3 to roughly Mach 0.4 before it reaches the compressor. This process, crucial for the J58 engine, transforms high-speed, low-pressure air into high-pressure air at a manageable speed, generating a majority of the total thrust. Mechanism for Slowing Air •Inlet Spike Position: The sharp, cone-shaped spike moves up to 26 inches backward as the aircraft accelerates, optimizing shock wave alignment. •Oblique Shock Waves: At supersonic speeds, the spike produces a series of angled oblique shock waves that slow and compress the air. •Normal Shock Wave: A terminal shock wave forms at the inlet mouth, effectively slowing the air to subsonic velocity. •Variable Geometry: The inlet computer automatically manages the spike position and bypass doors to prevent "inlet unstart"—an immediate loss of thrust caused by shock wave misalignment.  Benefits and Components •Pressure Conversion: The inlet acts like a "garden hose in reverse," where the reduction in speed is converted into massive pressure increase. •Subsonic Compression: The engine itself is a turbojet, which can only function on subsonic air. •Bypass Air: Excess air is bled off and reintroduced at the exhaust, adding more efficiency and thrust.  •YouTube : How the Lockheed SR-71 Blackbird works by Amimagraffs
1:04

The SR-71 Blackbird converts supersonic air to subsonic speeds using a movable, conical "spike" in the engine inlet that generates a series of shock waves, slowing air from over Mach 3 to roughly Mach 0.4 before it reaches the compressor. This process, crucial for the J58 engine, transforms high-speed, low-pressure air into high-pressure air at a manageable speed, generating a majority of the total thrust. Mechanism for Slowing Air •Inlet Spike Position: The sharp, cone-shaped spike moves up to 26 inches backward as the aircraft accelerates, optimizing shock wave alignment. •Oblique Shock Waves: At supersonic speeds, the spike produces a series of angled oblique shock waves that slow and compress the air. •Normal Shock Wave: A terminal shock wave forms at the inlet mouth, effectively slowing the air to subsonic velocity. •Variable Geometry: The inlet computer automatically manages the spike position and bypass doors to prevent "inlet unstart"—an immediate loss of thrust caused by shock wave misalignment.  Benefits and Components •Pressure Conversion: The inlet acts like a "garden hose in reverse," where the reduction in speed is converted into massive pressure increase. •Subsonic Compression: The engine itself is a turbojet, which can only function on subsonic air. •Bypass Air: Excess air is bled off and reintroduced at the exhaust, adding more efficiency and thrust.  •YouTube : How the Lockheed SR-71 Blackbird works by Amimagraffs

Habubrats SR-71

71,946 просмотров • 4 месяцев назад

SU-57M The Russians are enhancing the stealth characteristics and performance of the Su-57 with the new engine. The AL-51F1 offers 20–25% better fuel efficiency than the previous engine, incorporates composite materials, and features a flat nozzle to reduce the RCS and IR signature. Maximum thrust reaches approximately 180 kN, and the engine is about 20% lighter, enabling sustained supercruise at Mach 1.6–2.0 without afterburner. The Russians have been devoting significant attention to the Su-75, and it appears they are upgrading the Su-57 primarily for export markets.
0:24

SU-57M The Russians are enhancing the stealth characteristics and performance of the Su-57 with the new engine. The AL-51F1 offers 20–25% better fuel efficiency than the previous engine, incorporates composite materials, and features a flat nozzle to reduce the RCS and IR signature. Maximum thrust reaches approximately 180 kN, and the engine is about 20% lighter, enabling sustained supercruise at Mach 1.6–2.0 without afterburner. The Russians have been devoting significant attention to the Su-75, and it appears they are upgrading the Su-57 primarily for export markets.

Patricia Marins

40,322 просмотров • 6 месяцев назад

🚨People watching this think it looks fake… It isn’t. That is a real F-22 Raptor performing an unrestricted climb. This maneuver is something only a handful of aircraft on Earth can do. When the pilot rotates and goes straight up like that, the aircraft is converting pure engine thrust into vertical climb. The reason it can do it comes down to the engines. The F-22 is powered by two Pratt & Whitney F119-PW-100 turbofan engines. Each engine produces about 35,000 pounds of thrust with afterburner. Combined thrust: About 70,000 pounds. Now compare that to the aircraft’s weight. Typical combat weight: ≈ 64,000 pounds That means the Raptor has a thrust-to-weight ratio greater than 1:1. In simple terms… The engines produce more thrust than the aircraft weighs. That allows the jet to accelerate vertically. And it gets even crazier. The engines use two-dimensional thrust-vectoring nozzles, allowing the exhaust to tilt up and down to maintain control even when airflow over the wings is minimal. Top speed ≈ Mach 2.25 (about 1,700 mph) Supercruise ≈ Mach 1.5 without afterburners Service ceiling ≈ 65,000 feet Only about 183 operational F-22s were ever built. Which means when you see a Raptor do this climb… You’re watching one of the most advanced air-dominance fighters ever created. #SilentMajoritySpeaks #AStoneGroove
0:42

🚨People watching this think it looks fake… It isn’t. That is a real F-22 Raptor performing an unrestricted climb. This maneuver is something only a handful of aircraft on Earth can do. When the pilot rotates and goes straight up like that, the aircraft is converting pure engine thrust into vertical climb. The reason it can do it comes down to the engines. The F-22 is powered by two Pratt & Whitney F119-PW-100 turbofan engines. Each engine produces about 35,000 pounds of thrust with afterburner. Combined thrust: About 70,000 pounds. Now compare that to the aircraft’s weight. Typical combat weight: ≈ 64,000 pounds That means the Raptor has a thrust-to-weight ratio greater than 1:1. In simple terms… The engines produce more thrust than the aircraft weighs. That allows the jet to accelerate vertically. And it gets even crazier. The engines use two-dimensional thrust-vectoring nozzles, allowing the exhaust to tilt up and down to maintain control even when airflow over the wings is minimal. Top speed ≈ Mach 2.25 (about 1,700 mph) Supercruise ≈ Mach 1.5 without afterburners Service ceiling ≈ 65,000 feet Only about 183 operational F-22s were ever built. Which means when you see a Raptor do this climb… You’re watching one of the most advanced air-dominance fighters ever created. #SilentMajoritySpeaks #AStoneGroove

A Gene Robinson

1,277,222 просмотров • 5 месяцев назад

Most people have heard of nitrous oxide, but very few understand why injecting this gas can allow a piston engine to go from 450 horsepower to more than 2,000 horsepower. Nitrous oxide N₂O is not fuel. It is an oxygen carrier. Inside the combustion chamber, extreme heat breaks it down, releasing additional oxygen that allows the engine to burn far more fuel than it normally could. But the hard part is not adding nitrous. The real engineering challenge is controlling the explosion, precisely balancing nitrous flow, fuel delivery, ignition timing and cylinder temperatures. Too little fuel creates a melted engine. Too much destroys the power advantage.
0:22

Most people have heard of nitrous oxide, but very few understand why injecting this gas can allow a piston engine to go from 450 horsepower to more than 2,000 horsepower. Nitrous oxide N₂O is not fuel. It is an oxygen carrier. Inside the combustion chamber, extreme heat breaks it down, releasing additional oxygen that allows the engine to burn far more fuel than it normally could. But the hard part is not adding nitrous. The real engineering challenge is controlling the explosion, precisely balancing nitrous flow, fuel delivery, ignition timing and cylinder temperatures. Too little fuel creates a melted engine. Too much destroys the power advantage.

Ammanichanda

75,123 просмотров • 24 дней назад

During an engine run, massive amounts of air are pulled into the engine, creating strong suction at the inlet. The rapidly spinning fan accelerates the airflow, increasing its speed and changing the pressure around the engine. This pressure difference causes surrounding air, dust, and moisture to bend and flow toward the inlet. Even while stationary, the engine generates intense wind forces that show just how much air it moves. 📸 by ig/xtreme_aviation
0:39

During an engine run, massive amounts of air are pulled into the engine, creating strong suction at the inlet. The rapidly spinning fan accelerates the airflow, increasing its speed and changing the pressure around the engine. This pressure difference causes surrounding air, dust, and moisture to bend and flow toward the inlet. Even while stationary, the engine generates intense wind forces that show just how much air it moves. 📸 by ig/xtreme_aviation

aircraftmaintenancengineer

957,393 просмотров • 8 месяцев назад