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Hitler's Stealth Fighter
DesScorp writes "Aviation Week reports on a television special from the National Geographic Channel on what may have been the world's first true stealth fighter, the Horten Ho 229, a wooden design that was to include a layer of carbon material sandwiched in the leading edge to defeat radar. Northrop Grumman, experts at stealth technology from their Tacit Blue and B-2 programs, have built a full-size replica of the airframe and tested it at their desert facilities where they determined that the design was indeed stealthy, and would have been practically invisible to Britain's Chain Home radar system of WWII."
The development of stealth technology is one of those secretive fields that has an instant fascination. I quite enjoyed reading Ben Rich's autobiography. Also Hitler's plan to atom bomb New York and The Real Heroes of Telemark were both quite interesting, casting two sides of the same global battle from very different perspectives. German scientists were some of the best in the world (not that they are so bad today..). Sometimes I think that the world got lucky - a few small changes in history, and things could easily have gone the other way.
This article is utterly bogus. Not that National Geographic has ever been known for quality writing on highly technical topics.
The Ho 229 was built as it was specifically to meet the "1000-1000-1000" bomber contract. This called for an aircraft that could fly 1000 km at 1000 km/h while carrying a 1000 kg warload. And it had to be built of wood, because all of the aluminum, and metalworkers, were accounted for in current projects.
The only way to possibly meet the speed requirement was through jet engines. However, jet engines of the era were extremely inefficient, especially German ones where poor alloys limited exhaust temperatures in the turbine. So in order to get the range while keeping the speed, you needed to cut drag to an absolute minimum.
And that's why the 229 looks like it does. It lacks the profusion of surfaces that conventional designs had, and minimized wetted surface due to the almost non-existent fuselage. This thing is all wing, which means you're losing all the parasitic drag.
ANYTHING else, including these "stealth" features, were utterly secondary.
Moreover I have a very serious problem with the claims that this plane is stealthy. Compressor disks in the engines are an extremely effective radar mirror. This is why the F-117 has "blinds" over the inlets, or why the F-22 has a S-shaped intake system. As you can see in the pictures, in the 229 the compressor face is directly exposed to the front.
Sure, the CH radars were longwave and wouldn't have been good against this aircraft, but that would be true of any small jet of the era. They were extremely good against targets a few meters in size, like a propeller, but anything smaller would be difficult to see.
Claiming this plane was developed _as a stealth plane_ is like claiming the DC-3 was a swept-wing design. Accidental features do not indicate design intent.
Maury
I can not find it now, but I remember encountering an article several years ago in a local Las Vegas newspaper that described how the stealth fighters could be detected easily. In places like Nevada where there are secret military bases all over the place, there are hobby stealth watchers and they had discovered that there are so many cell phones in use all over the world that stealth fighters get lit up like a x-mas tree from the ground based signals emanating from the cell phones. Even amateur stealth watchers could track them flying around the Western United States. It was not long after that article the military officially started dropping all plans for future production related to designs based primarily on right angles and radar.
Can anyone find the article or info on this?
Living in Chile