00:01With its smooth, tailless wing and dark, bat-like profile,
00:05this airframe appears to be a piece of high-tech Cold War hardware.
00:09Yet this prototype sat in a German hangar in the middle of World War II.
00:14For decades, rumors have circulated online,
00:17claiming this experimental aircraft was the world's first true stealth fighter.
00:22The project emerged from the intense pressure placed on German engineers in the early 1940s.
00:27The head of the Luftwaffe, Hermann Göring, had issued a seemingly impossible mandate.
00:33This infographic breaks down the scale of that demand, the 3-by-1000 rule.
00:38The Luftwaffe required an aircraft that could carry a 1,000-kilogram payload,
00:43hit speeds of 1,000 kilometers per hour, and maintain a combat radius of 1,000 kilometers.
00:50Reaching that speed required ditching propellers for early turbojet engines,
00:54like those used on the ME-262 seen here.
00:57However, these first-generation jets consumed fuel so rapidly
01:02that hitting a 1,000-kilometer range was mathematically impossible.
01:07To meet the requirement, designers had to choose between speed and range.
01:11The Hortonwothers realized the only way to achieve both
01:15was to remove aerodynamic drag entirely.
01:18Their solution was the flying wing.
01:21By removing the standard fuselage and vertical tail, the wing itself became the entire airplane.
01:27Looking at this simulated wind tunnel test, you can see how the air flows uninterrupted over the smooth frame.
01:34Without a bulky fuselage or tail section catching the wind, the aircraft faces drastically
01:39less air resistance, allowing it to maintain high speeds with less fuel.
01:43But removing the tail introduces a critical flaw.
01:47Without a vertical fin for stability, the aircraft suffers from severe yaw,
01:52causing it to drift and wobble uncontrollably from side to side.
01:56The Hortons corrected this by stretching the wing into a long, thin, bell-like shape.
02:01Spreading the aircraft's nas across a wider surface area naturally stabilized the airflow and controlled the dangerous wobble.
02:09Designing for these specific physics resulted in an airframe with flight characteristics unlike anything else in the sky,
02:16a profile that would eventually fuel decades of speculation.
02:20This unconventional shape led to the most enduring rumor about the Ho 229,
02:25the idea it was specifically engineered to be invisible to allied radar.
02:30This diagram shows the logic behind that myth.
02:33When a radar wave hits the flat, vertical tail of a conventional fighter,
02:37the signal bounces straight back to the receiver.
02:40The smooth, sloping profile of the flying wing instead scatters those waves in different directions.
02:46In 2008, Northrop Grumman built a full-scale model of the aircraft to measure its actual radar signature.
02:52They found British radar would still detect the Ho 229 at 80% of the distance it took to spot
02:58a standard fighter,
02:59like the Messerschmitt BF-109 seen here.
03:02Furthermore, the Smithsonian's examination of the only surviving prototype found no evidence to support rumors
03:09that the wood frame was coated in radar-absorbing charcoal dust.
03:12The Ho 229 was designed for pure speed.
03:15Any reduction in radar footprint was an accidental byproduct of its aerodynamic shape.
03:20The V-2 prototype completed a successful maiden flight in early 1945,
03:25but the engineering reality quickly caught up with the project.
03:29On February 18th, an engine caught fire and stalled.
03:32Noxious fumes flooded the cockpit, causing the pilot to pass out before the aircraft crashed.
03:38Material shortages and a collapsing infrastructure meant the regime could not provide the rigorous testing
03:42or refined engines the unstable design required.
03:45Ultimately, the Horton 229 remained a deeply flawed, highly experimental prototype
03:50pushed far beyond its limits by a failing regime.
03:53In April 1945, American troops reached the factory at Friedrichroda
03:58and captured the unfinished V-3 prototype.
04:00At the same time, the United States was experimenting with its own flying wings,
04:05including the massive YB-35 fleet seen parked on this runway.
04:09These American designs initially failed because the turbulence from their propeller engines
04:14made the tailless frames impossible to stabilize.
04:17Data from the captured German prototype confirmed that jet engines provided the clean, steady thrust
04:23necessary to make the flying wing concept functional.
04:27This engineering insight influenced decades of American aviation,
04:31leading to Northrop Grumman's B-2 Spirit stealth bomber.
04:34That lineage continues today with the development of the next-generation B-21 Raider.
04:40The Ho-229 was a mechanical dead-end,
04:43yet it provided the aerodynamic data that connected early theories to modern aviation.
04:49Was it an overhyped myth or a true pioneer?
04:52Let us know in the comments below.
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