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The German Luftwaffe used a high-tech ground simulator during WWII called the "Bombenteppich" (Bomb Carpet). Instead of flying, student bombardiers stood on a raised platform above a giant, mechanically driven conveyor belt painted with target terrain. The belt moved at the exact apparent ground speed of a combat aircraft.... show more

Aviation Archive - Tim Farmer

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The Link Trainer was the World War II secret weapon that taught pilots to fly blind before they ever left the ground. Developed by Edwin Link a pipe organ manufacturing in 1929, this ground-based flight simulator used a system of pneumatic bellows to physically mimic a plane's pitch, roll, and yaw. Trainees sat inside a completely dark, enclosed cockpit to master radio beacon tracking and bad-weather instrument navigation, allowing them to survive dangerous spins and cloud blindness in a zero-risk environment. Military hubs like Gunter Field(seen here) operated a strict, highly efficient split-schedule using these devices. Cadets spent their mornings inside the simulator mastering the mechanics of blind instrument navigation, then stepped onto the flight line in the afternoon to pilot real aircraft through the exact same geographic routes. While the pilot navigated the simulated skies, an instructor sat at an adjacent desk monitoring their progress. A self-propelled, ink-marking device known as the crab tracked the pilot’s exact flight path across a paper map, providing an undeniable visual record of every navigation error for post-flight critique.

The Link Trainer was the World War II secret weapon that taught pilots to fly blind before they ever left the ground. Developed by Edwin Link a pipe organ manufacturing in 1929, this ground-based flight simulator used a system of pneumatic bellows to physically mimic a plane's pitch, roll, and yaw. Trainees sat inside a completely dark, enclosed cockpit to master radio beacon tracking and bad-weather instrument navigation, allowing them to survive dangerous spins and cloud blindness in a zero-risk environment. Military hubs like Gunter Field(seen here) operated a strict, highly efficient split-schedule using these devices. Cadets spent their mornings inside the simulator mastering the mechanics of blind instrument navigation, then stepped onto the flight line in the afternoon to pilot real aircraft through the exact same geographic routes. While the pilot navigated the simulated skies, an instructor sat at an adjacent desk monitoring their progress. A self-propelled, ink-marking device known as the crab tracked the pilot’s exact flight path across a paper map, providing an undeniable visual record of every navigation error for post-flight critique.

Aviation Archive - Tim Farmer

100,806 views • 2 months ago

Saw this on Hacker News today: Someone reverse engineered a game from 1983 called 📈 Wall Street Raiders, it was 115,000 lines of BASIC so indecipherable that even Disney couldn't figure out how to It's essentially a very deep granular trading simulator where you're a corporate raider, buying and selling companies, and many CEOs and investment managers said they used the strategies they learnt in the game in the real world! So I installed it for you to play on

Saw this on Hacker News today: Someone reverse engineered a game from 1983 called 📈 Wall Street Raiders, it was 115,000 lines of BASIC so indecipherable that even Disney couldn't figure out how to It's essentially a very deep granular trading simulator where you're a corporate raider, buying and selling companies, and many CEOs and investment managers said they used the strategies they learnt in the game in the real world! So I installed it for you to play on

@levelsio

453,736 views • 7 months ago

Revolutionary salute to this student 🫡 He forced the RSS-backed VC to sit on the ground 🔥 In Ranchi, the RSS-backed Vice Chancellor sat high in arrogance during a dialogue with the agitating students. He called the striking students for talks — and made them sit on the floor. One Adivasi student, stood his ground firmly and unapologetically and refused to accept this humiliation. He instead raised his voice in rage for a fair and dignified treatment and forced the VC himself to sit on the ground. Only then did the dialogue begin. This is what student resistance looks like. This is what one STUDENT PROTEST AT JANTAR MANTAR did to Students across the nation. It gave them the most needed booster shot of resistance and the right to dissent. No more one-sided “talks” where the powerful stay elevated and the students are made to crawl. Salute to this student. The days of high-handed, RSS-nurtured administrators are numbered. Back Off RSS. The Beginning of your End is here. #StudentProtestRanchi #studentsdemandjustice 1 of 2 Read more for what are their demands 👇

Revolutionary salute to this student 🫡 He forced the RSS-backed VC to sit on the ground 🔥 In Ranchi, the RSS-backed Vice Chancellor sat high in arrogance during a dialogue with the agitating students. He called the striking students for talks — and made them sit on the floor. One Adivasi student, stood his ground firmly and unapologetically and refused to accept this humiliation. He instead raised his voice in rage for a fair and dignified treatment and forced the VC himself to sit on the ground. Only then did the dialogue begin. This is what student resistance looks like. This is what one STUDENT PROTEST AT JANTAR MANTAR did to Students across the nation. It gave them the most needed booster shot of resistance and the right to dissent. No more one-sided “talks” where the powerful stay elevated and the students are made to crawl. Salute to this student. The days of high-handed, RSS-nurtured administrators are numbered. Back Off RSS. The Beginning of your End is here. #StudentProtestRanchi #studentsdemandjustice 1 of 2 Read more for what are their demands 👇

Pragnya Gupta

237,427 views • 1 month ago

In case you were wondering, this is how it works. A towbarless aircraft tug is used to push an aircraft back from the gate. Instead of using a towbar, it drives up to the nose wheels, clamps them in place and lifts the nose landing gear slightly off the ground. The main landing gear stays on the ground at all times. Once secured, the tug controls the steering and carefully pushes the aircraft into position for taxi. Only a small part of the aircraft's weight rests on the nose gear which is why even large aircraft like the Boeing 777 can be moved safely and smoothly. After pushback, the tug lowers the nose wheels and disconnects, and the pilots continue taxiing.

In case you were wondering, this is how it works. A towbarless aircraft tug is used to push an aircraft back from the gate. Instead of using a towbar, it drives up to the nose wheels, clamps them in place and lifts the nose landing gear slightly off the ground. The main landing gear stays on the ground at all times. Once secured, the tug controls the steering and carefully pushes the aircraft into position for taxi. Only a small part of the aircraft's weight rests on the nose gear which is why even large aircraft like the Boeing 777 can be moved safely and smoothly. After pushback, the tug lowers the nose wheels and disconnects, and the pilots continue taxiing.

Mechanical Knowledge

467,411 views • 6 months ago

THIS GUY LIVES UNDER SFO'S TAKEOFF PATH SO HE BUILT A CEILING PROJECTOR THAT TRACKS EVERY PLANE FLYING OVER HIS HOUSE IN REAL TIME he uses a cheap $30 radio receiver to pick up the signals that planes broadcast while flying. then projects them onto his ceiling in real time when a jet flies over his house you hear it outside and at the exact same moment a plane glides across his ceiling labeled with the airline, aircraft type, and destination pure black background so the projector's rectangle disappears and only the aircraft are visible but he didn't stop at planes it also draws the real sky behind them. sun, moon, bright stars, constellations, and live satellites including the ISS. all at their true positions for his exact location and time in real time so he's lying in bed watching the actual night sky projected onto his ceiling with real planes crossing through it as they take off from SFO there is a huge market for every man alive that runs outside to see the helicopter vibe coded the whole thing himself with a cheap radio, a projector, and some clever software

THIS GUY LIVES UNDER SFO'S TAKEOFF PATH SO HE BUILT A CEILING PROJECTOR THAT TRACKS EVERY PLANE FLYING OVER HIS HOUSE IN REAL TIME he uses a cheap $30 radio receiver to pick up the signals that planes broadcast while flying. then projects them onto his ceiling in real time when a jet flies over his house you hear it outside and at the exact same moment a plane glides across his ceiling labeled with the airline, aircraft type, and destination pure black background so the projector's rectangle disappears and only the aircraft are visible but he didn't stop at planes it also draws the real sky behind them. sun, moon, bright stars, constellations, and live satellites including the ISS. all at their true positions for his exact location and time in real time so he's lying in bed watching the actual night sky projected onto his ceiling with real planes crossing through it as they take off from SFO there is a huge market for every man alive that runs outside to see the helicopter vibe coded the whole thing himself with a cheap radio, a projector, and some clever software

Om Patel

2,985,359 views • 3 months ago

A Canadian artist built a tiny open-air aircraft and convinced an entire flock of wild geese that he was their mother. Back in 1993, Bill Lishman had a theory that he could teach migratory birds new flight paths from scratch. He started by raising a flock of orphaned Canada geese from the exact moment they hatched. He spent months conditioning the young birds. He got them used to the loud engine noise and the specific shape of his custom ultralight aircraft. When it was time for the birds to head south for the winter, he climbed into the pilot seat and took off from his home in Ontario. The entire flock fell into a perfect V-shaped formation right behind his wings. He led the birds on a multi-day journey across the sky, flying just inches away from them all the way to a wintering ground in Virginia, in the eastern US. He landed, left the birds to settle in, and went back home. The real test came the following spring. Without any guidance or the sound of the aircraft engine to follow, the geese took off from Virginia. They successfully navigated the exact same route and made it all the way back to Canada completely on their own.

A Canadian artist built a tiny open-air aircraft and convinced an entire flock of wild geese that he was their mother. Back in 1993, Bill Lishman had a theory that he could teach migratory birds new flight paths from scratch. He started by raising a flock of orphaned Canada geese from the exact moment they hatched. He spent months conditioning the young birds. He got them used to the loud engine noise and the specific shape of his custom ultralight aircraft. When it was time for the birds to head south for the winter, he climbed into the pilot seat and took off from his home in Ontario. The entire flock fell into a perfect V-shaped formation right behind his wings. He led the birds on a multi-day journey across the sky, flying just inches away from them all the way to a wintering ground in Virginia, in the eastern US. He landed, left the birds to settle in, and went back home. The real test came the following spring. Without any guidance or the sound of the aircraft engine to follow, the geese took off from Virginia. They successfully navigated the exact same route and made it all the way back to Canada completely on their own.

Lemma the Optimist

26,519 views • 4 months ago

Back in the 1920s, draftspersons and cartographers used a highly specialized tool called a dotting pen to draw absolutely flawless dashed and dotted lines by hand. Instead of a standard nib, this ingenious writing instrument featured a tiny, interchangeable gear wheel attached to the tip. The mechanics were incredibly simple yet precise. As the user rolled the pen across a blueprint or map, the revolving gear teeth would mechanically lift and drop the ink reservoir at exact intervals. By swapping out different gears, architects could instantly switch between fine dotted lines, long dashes, or intricate chain patterns. It is a beautiful example of pre-digital engineering that allowed creators to achieve perfect geometric consistency long before the invention of computer aided design software.

Back in the 1920s, draftspersons and cartographers used a highly specialized tool called a dotting pen to draw absolutely flawless dashed and dotted lines by hand. Instead of a standard nib, this ingenious writing instrument featured a tiny, interchangeable gear wheel attached to the tip. The mechanics were incredibly simple yet precise. As the user rolled the pen across a blueprint or map, the revolving gear teeth would mechanically lift and drop the ink reservoir at exact intervals. By swapping out different gears, architects could instantly switch between fine dotted lines, long dashes, or intricate chain patterns. It is a beautiful example of pre-digital engineering that allowed creators to achieve perfect geometric consistency long before the invention of computer aided design software.

Mechanical Knowledge

50,050 views • 2 months ago

JUST IN: President Trump breaks down the rescue mission to save the F-15 crew in Iran over the weekend. Here is what he said: - 155 aircraft in total were used to save the 2nd crew member. - This included 4 bombers, 64 fighters, 48 refueling tankers, 13 rescue aircraft, and more. - The second crew member was miles away from the first and was badly injured. - "The officer followed his training and climbed into the treacherous mountain terrain and started climbing toward a higher altitude." - While "bleeding profusely," the officer scaled cliffs and treated his own wounds. - American forces were able to transmit his location: "They have a very sophisticated beeper-type apparatus that is on them at all times." - Thousands of Iranians were looking for the officer. - "We had seven different locations where they thought, and they were very confused." - "So in a breathtaking show of skill and precision, lethality and force, America's military descended on the area, the real area engaged." - The F-15 weapons system officer evaded capture on the ground for almost 48 hours. - Two "large ... old" planes got stuck during the rescue operation. - "We had a contingency plan, which was unbelievable, where lighter, faster aircraft came in and they took 'em out. We blew up the old planes and we blew 'em up to smithereens because we had equipment on the planes..."

JUST IN: President Trump breaks down the rescue mission to save the F-15 crew in Iran over the weekend. Here is what he said: - 155 aircraft in total were used to save the 2nd crew member. - This included 4 bombers, 64 fighters, 48 refueling tankers, 13 rescue aircraft, and more. - The second crew member was miles away from the first and was badly injured. - "The officer followed his training and climbed into the treacherous mountain terrain and started climbing toward a higher altitude." - While "bleeding profusely," the officer scaled cliffs and treated his own wounds. - American forces were able to transmit his location: "They have a very sophisticated beeper-type apparatus that is on them at all times." - Thousands of Iranians were looking for the officer. - "We had seven different locations where they thought, and they were very confused." - "So in a breathtaking show of skill and precision, lethality and force, America's military descended on the area, the real area engaged." - The F-15 weapons system officer evaded capture on the ground for almost 48 hours. - Two "large ... old" planes got stuck during the rescue operation. - "We had a contingency plan, which was unbelievable, where lighter, faster aircraft came in and they took 'em out. We blew up the old planes and we blew 'em up to smithereens because we had equipment on the planes..."

Collin Rugg

94,762 views • 5 months ago

🚨 Lavrov called accusations over the drone incident at Leipzig Airport the “start of a real war” “They found some drone there. Said it was Russian. Nobody even bothered to investigate. This is, broadly speaking, the beginning of a real war,” the Russian foreign minister blurted out. German authorities, however, say their conclusion about Russian involvement was based on an analysis of the drone, its components, and other evidence gathered during the investigation. Quite a position: launching is apparently allowed — accusing is not.

🚨 Lavrov called accusations over the drone incident at Leipzig Airport the “start of a real war” “They found some drone there. Said it was Russian. Nobody even bothered to investigate. This is, broadly speaking, the beginning of a real war,” the Russian foreign minister blurted out. German authorities, however, say their conclusion about Russian involvement was based on an analysis of the drone, its components, and other evidence gathered during the investigation. Quite a position: launching is apparently allowed — accusing is not.

NEXTA

125,061 views • 19 days ago

🔥 AMAZING! President Trump is bringing Medal of Honor recipients on stage during his America 250 speech tonight He recounted the story of William Carney, shot four times in battle, who dragged himself back to camp and declared: 'Boys, the old flag never touched the ground.' TRUMP: "Sergeant Carney dove to the ground to keep the flag from touching the mud. He didn't want to have it touch the ground. He didn't want to have it touch the mud. He wanted it to be perfect. He raised it high above the field and was shot four times. They thought he was gone, but he kept moving forward." WHAT A PATRIOT! 🇺🇸

🔥 AMAZING! President Trump is bringing Medal of Honor recipients on stage during his America 250 speech tonight He recounted the story of William Carney, shot four times in battle, who dragged himself back to camp and declared: 'Boys, the old flag never touched the ground.' TRUMP: "Sergeant Carney dove to the ground to keep the flag from touching the mud. He didn't want to have it touch the ground. He didn't want to have it touch the mud. He wanted it to be perfect. He raised it high above the field and was shot four times. They thought he was gone, but he kept moving forward." WHAT A PATRIOT! 🇺🇸

Nick Sortor

67,108 views • 2 months ago

BLM Riots just happened to turn down a prime real estate location that was then fast tracked for development and quickly financed to put up a brand new housing development I mean what are the odds!! “Across from me is a brand new condo complex they're building on the corners of Broadway, Lincoln, and Santa Monica. This used to be a Vons grocery store, but during the BLM riots of 2020, it was burned to the ground. And then they were able to find the fastest architect ever who drew up blueprints, got everything approved, and they were able to break ground within 6 months of the Vons burning down. For this entire mass complex, it only took them 6 months to start it from scratch. Not to mention the financing they were able to find in just 6 months because this totally was not planned…”

Wall Street Apes

129,312 views • 1 year ago

Last night, Russia attacked Sumy Oblast with Geran-2 drones. At least 3 drones attacked Sumy City. Interestingly, they used a new tactic, where each drone would fly to a high altitude over the city, make large circles while slowly descending, before cutting off their engine and silently gliding to their target (example of this in media 3). This made it very difficult to detect the drones on approach to their targets. As a result of the strikes, large fires broke out at the impact sites. Additionally, 3-4 drones attacked targets in/near the city of Shostka.

Last night, Russia attacked Sumy Oblast with Geran-2 drones. At least 3 drones attacked Sumy City. Interestingly, they used a new tactic, where each drone would fly to a high altitude over the city, make large circles while slowly descending, before cutting off their engine and silently gliding to their target (example of this in media 3). This made it very difficult to detect the drones on approach to their targets. As a result of the strikes, large fires broke out at the impact sites. Additionally, 3-4 drones attacked targets in/near the city of Shostka.

AMK Mapping 🇳🇿

26,133 views • 5 months ago

Optimizing ground reaction forces in the golf swing isn’t just about HOW HARD a golfer pushes against the ground, but HOW they push (timing and direction). One of the key kinetic variables we consider in a force analysis is called anterior-posterior force (or heel-toe force). Think of a golfer pushing frictionally against the ground, towards the target line with their lead leg and away from the target line with their trail leg. AP force is not only a meaningful contributor to clubhead speed, it also has a strong relationship to early extension. In order to prevent the pelvis from moving closer to the target line on the downswing, the lead leg needs to push considerably harder than the trail leg to drive the hip back (we often see over 2X AP force on the lead side vs the trail side in elite ball-strikers). As Newton outlines in his 3rd law, “for every action there is an equal and opposite reaction.” In the case of this PGA TOUR player, the trail leg was pushing equal to the lead leg, resulting in him early extending.

Optimizing ground reaction forces in the golf swing isn’t just about HOW HARD a golfer pushes against the ground, but HOW they push (timing and direction). One of the key kinetic variables we consider in a force analysis is called anterior-posterior force (or heel-toe force). Think of a golfer pushing frictionally against the ground, towards the target line with their lead leg and away from the target line with their trail leg. AP force is not only a meaningful contributor to clubhead speed, it also has a strong relationship to early extension. In order to prevent the pelvis from moving closer to the target line on the downswing, the lead leg needs to push considerably harder than the trail leg to drive the hip back (we often see over 2X AP force on the lead side vs the trail side in elite ball-strikers). As Newton outlines in his 3rd law, “for every action there is an equal and opposite reaction.” In the case of this PGA TOUR player, the trail leg was pushing equal to the lead leg, resulting in him early extending.

TPI

21,869 views • 1 year ago

🚨 EXPOSED: Erika Kirk Caught RIGGING THE Q & A Event At GW University This Week - Student Says 3 Of Out The Person's Were PLANTED And Questions Were STAGED!😱 If you needed any more proof that Erika Kirk has completely abandoned the principles Charlie Kirk built his life on, here is the smoking gun. A student who just attended the Turning Point USA event at GW University featuring Erika Kirk and Karoline Leavitt just did an interview blowing the whistle on the entire operation. According to the students on the ground, the "Free Speech" event was a carefully orchestrated, heavily censored theater production. According to the student in the clip: The "Plants": At least 3 out of the 4 people who got to ask questions during the Q&A were literally affiliated with the event/organization. They were planted there. Not Even Students: Half of the people hand-picked to ask questions weren't even actual GW students! The Cut-Off: The organizers rigged the line so their "plants" could ask soft-ball, pro-administration questions. Then, the absolute second an actual student with a dissenting opinion stepped up to the mic, they magically "ran out of time" and shut the entire thing down. Because they can’t handle the heat. This student said it best: He respected Charlie because Charlie actually valued freedom of speech and talked to people who disagreed with him. This new regime is just creating a safe space bubble to protect themselves from real questions—like, perhaps, questions about the investigation into Charlie's death? Charlie Kirk built his entire legacy on the "Prove Me Wrong" table. He was fearless. He wanted to debate the other side, and he never backed down from a tough question from a hostile student. The "New" TPUSA? They are terrified of unscripted moments. The students are waking up. The movement sees right through the facade. Watch the clip for yourself. What happened to the fearless TPUSA we used to know? 👇 From: CALL TO ACTIVISM FOLLOW Them!

🚨 EXPOSED: Erika Kirk Caught RIGGING THE Q & A Event At GW University This Week - Student Says 3 Of Out The Person's Were PLANTED And Questions Were STAGED!😱 If you needed any more proof that Erika Kirk has completely abandoned the principles Charlie Kirk built his life on, here is the smoking gun. A student who just attended the Turning Point USA event at GW University featuring Erika Kirk and Karoline Leavitt just did an interview blowing the whistle on the entire operation. According to the students on the ground, the "Free Speech" event was a carefully orchestrated, heavily censored theater production. According to the student in the clip: The "Plants": At least 3 out of the 4 people who got to ask questions during the Q&A were literally affiliated with the event/organization. They were planted there. Not Even Students: Half of the people hand-picked to ask questions weren't even actual GW students! The Cut-Off: The organizers rigged the line so their "plants" could ask soft-ball, pro-administration questions. Then, the absolute second an actual student with a dissenting opinion stepped up to the mic, they magically "ran out of time" and shut the entire thing down. Because they can’t handle the heat. This student said it best: He respected Charlie because Charlie actually valued freedom of speech and talked to people who disagreed with him. This new regime is just creating a safe space bubble to protect themselves from real questions—like, perhaps, questions about the investigation into Charlie's death? Charlie Kirk built his entire legacy on the "Prove Me Wrong" table. He was fearless. He wanted to debate the other side, and he never backed down from a tough question from a hostile student. The "New" TPUSA? They are terrified of unscripted moments. The students are waking up. The movement sees right through the facade. Watch the clip for yourself. What happened to the fearless TPUSA we used to know? 👇 From: CALL TO ACTIVISM FOLLOW Them!

Project Constitution

307,036 views • 5 months ago

#WATCH | Delhi | On the meeting of the INDIA bloc, BJP MP Sambit Patra says, "...Previously, these meetings used to be held in stadiums, and everyone stood holding hands in the Bengaluru stadium. Gradually, these meetings have shifted to a single room at the Constitution Club; they no longer fill stadiums...In Tamil Nadu, you (Congress) rushed over there immediately, formed an alliance with another party, and established a government...Having lost in Bengal, they are now crying foul. The entire country is witnessing this extreme hypocrisy...None of these political parties has any real presence on the ground. Their integrity has been lost, and because of that loss of integrity, the public did not vote for them..."

#WATCH | Delhi | On the meeting of the INDIA bloc, BJP MP Sambit Patra says, "...Previously, these meetings used to be held in stadiums, and everyone stood holding hands in the Bengaluru stadium. Gradually, these meetings have shifted to a single room at the Constitution Club; they no longer fill stadiums...In Tamil Nadu, you (Congress) rushed over there immediately, formed an alliance with another party, and established a government...Having lost in Bengal, they are now crying foul. The entire country is witnessing this extreme hypocrisy...None of these political parties has any real presence on the ground. Their integrity has been lost, and because of that loss of integrity, the public did not vote for them..."

ANI

19,341 views • 3 months ago