• Helicopter lost in Bin Laden raid was a secret stealth model
    214 replies, posted
Fucking amazing.
I know you guys will be interested, so here's a military photos thread on it: [url]http://www.militaryphotos.net/forums/showthread.php?197635-The-mysterious-helicopter-involved-in-the-Osama-Bin-Laden-raid/page27[/url]
From my conceptual military armchair general point of view. Shouldn't transport choppers be more focused on protection from small-arms fire and AAA weaponry as opposed to stealth? I mean those things fly very low. It wouldn't matter much to a group to determine where the chopper would be coming but it would just be a matter of time of how quickly they can pivot their AAA weapons or their bodies when they can visually see and aim at the helicopter itself.
This is like a children's toy on the scale of the technology they haven't shown us yet.
a reporter was on-hand to capture the event [img]http://oi51.tinypic.com/34qo3o9.jpg[/img]
Take a look guys [url]http://upload.democraticunderground.com/discuss/duboard.php?az=show_mesg&forum=439&topic_id=1039446&mesg_id=1039583[/url]
[QUOTE=shian;29626054]I know you guys will be interested, so here's a military photos thread on it: [url]http://www.militaryphotos.net/forums/showthread.php?197635-The-mysterious-helicopter-involved-in-the-Osama-Bin-Laden-raid/page27[/url][/QUOTE] [img]https://lh3.googleusercontent.com/-kFC_dTlxCxg/TcIQId9_tfI/AAAAAAAABFk/lbTjb-7ssYw/nessie.jpg[/img] neat
[QUOTE=muffinmastah;29626450]Take a look guys [url]http://upload.democraticunderground.com/discuss/duboard.php?az=show_mesg&forum=439&topic_id=1039446&mesg_id=1039583[/url][/QUOTE] Holy flying fuck I hope this isnt fake.
[QUOTE=Used Car Salesman;29625252] [img_thumb]http://www.wired.com/images_blogs/dangerroom/2011/05/RTR2LZQ11-660x451.jpg[/img_thumb][/QUOTE] Stealth mode makes it hide itself as a piece of modern art.
[QUOTE=GunFox;29625749]Helicopter sound mechanics work oddly. For the most part, with helicopters, the goal is to make it difficult to determine the direction the helicopter is coming from and to maintain a low altitude in order to ensure that the sound isn't heard until the helicopter is almost right on top of you. Directionally speaking, if a helicopter has more than 5 blades on the main rotor, it does something odd to the acoustics and makes it extremely difficult to determine the direction the sound is coming from. Judging by the large number of blades on the tail rotor here, it can be assumed that the main has at least five, if not six, blades. Ideally though, a ducted tail fan would be used in place of the standard tail rotor design. The sound a helicopter makes comes from the rotor wash of the main rotor colliding with that of the tail rotor. It literally chops the wash of the tail in two producing the oddly accurate nickname of "chopper". Old models of UH-1 Iroquois (AKA Hueys) used two blades on the main rotor and produced a really distinct thump thump thump sound as a result. This is where the nickname likely originated. Having a ducted fan mitigates this problem by projecting the tail rotor wash away from the wash of the main rotor. The RAH-66 was intended to be borderline stealth and used the tail fan to great effect: [url]http://www.youtube.com/watch?v=g0R1ISQAmqk[/url] If you can ignore the cheesy voiceover, the sound of the helicopter is very different from your normal helicopter. Another way to achieve this is to use a coaxial rotor system that we see on Russian gunships. Instead of a tail rotor providing counter torque to the main, you have a second rotor placed above the main rotor that spins in the opposite direction. Mechanically speaking the system is more complicated, but you make significant performance gains. The Ka-50 Black shark is virtually unbeatable in agility and can carry significantly more payload than a helicopter its size otherwise would be able to due to all engine power being used for lift AND counter torque instead of a portion only being used for counter torque. The helicopter rotates so fast that the cannon isn't placed on a swivel mount like on other Gunships, because the helicopter would out-rotate most swivel mounts anyways. An interesting side note is that Metal Gear solid 4 actually did exactly that. It made stealth blackhawks with coaxial-rotors. From a science fiction standpoint, they did an outstanding job with the helicopter design. [url]http://img651.imageshack.us/img651/3440/830pxushelicopter.png[/url][/QUOTE] It's less of amount of rotors, and more of uneven spacing between the rotors. [url]http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20030015482_2003014778.pdf[/url] As for this helicopter? I'm thinking a retooling of the Sikorsky S-75.
[QUOTE=GunFox;29625749]Helicopter sound mechanics work oddly. For the most part, with helicopters, the goal is to make it difficult to determine the direction the helicopter is coming from and to maintain a low altitude in order to ensure that the sound isn't heard until the helicopter is almost right on top of you. Directionally speaking, if a helicopter has more than 5 blades on the main rotor, it does something odd to the acoustics and makes it extremely difficult to determine the direction the sound is coming from. Judging by the large number of blades on the tail rotor here, it can be assumed that the main has at least five, if not six, blades. Ideally though, a ducted tail fan would be used in place of the standard tail rotor design. The sound a helicopter makes comes from the rotor wash of the main rotor colliding with that of the tail rotor. It literally chops the wash of the tail in two producing the oddly accurate nickname of "chopper". Old models of UH-1 Iroquois (AKA Hueys) used two blades on the main rotor and produced a really distinct thump thump thump sound as a result. This is where the nickname likely originated. Having a ducted fan mitigates this problem by projecting the tail rotor wash away from the wash of the main rotor. The RAH-66 was intended to be borderline stealth and used the tail fan to great effect: [url]http://www.youtube.com/watch?v=g0R1ISQAmqk[/url] If you can ignore the cheesy voiceover, the sound of the helicopter is very different from your normal helicopter. Another way to achieve this is to use a coaxial rotor system that we see on Russian gunships. Instead of a tail rotor providing counter torque to the main, you have a second rotor placed above the main rotor that spins in the opposite direction. Mechanically speaking the system is more complicated, but you make significant performance gains. The Ka-50 Black shark is virtually unbeatable in agility and can carry significantly more payload than a helicopter its size otherwise would be able to due to all engine power being used for lift AND counter torque instead of a portion only being used for counter torque. The helicopter rotates so fast that the cannon isn't placed on a swivel mount like on other Gunships, because the helicopter would out-rotate most swivel mounts anyways. An interesting side note is that Metal Gear solid 4 actually did exactly that. It made stealth blackhawks with coaxial-rotors. From a science fiction standpoint, they did an outstanding job with the helicopter design. [url]http://img651.imageshack.us/img651/3440/830pxushelicopter.png[/url][/QUOTE] So that explains the unique sound of the HH65. [media]http://www.youtube.com/watch?v=gytm409IdeE[/media]
[IMG]http://www.fas.org/man/dod-101/sys/ac/comanche-030.jpg[/IMG] + [img]http://www.darkgovernment.com/news/wp-content/uploads/2010/08/blackhawk-chopper.jpg[/img] = [img]http://gyazo.com/a2916195ff8d8d9e274bff51ab8ba673.png[/img] ? [editline]4th May 2011[/editline] God the Comanche is such a sexy looking helicopter.
I didn;t even know they used helicopters [editline]5th May 2011[/editline] [QUOTE=FunnyBunny;29627000][img_thumb]http://www.fas.org/man/dod-101/sys/ac/comanche-030.jpg[/img_thumb] God the Comanche is such a sexy looking helicopter.[/QUOTE] Looks like it's trying really hard to be a fighter plane
[QUOTE=En-Guage V2;29627620]I didn;t even know they used helicopters[/QUOTE] You didn't know the US used helicopters?
[img]http://images.wikia.com/half-life/en/images/d/d1/Hunter_chopper_canals.jpg[/img] :o
I kinda thought there was something like this at work. I was wondering how they got past Pakistan's radar. I wonder if this drops out the back of airplanes too like those other modified Black Hawks.
[img]http://images.ea.com/games/cncportal/Images/tiberiandawn.jpg[/img] OH SHI-
The pictures look like any old helicopter to me.
Judging by the wreckage it's just another S-60 variant. We only use like 10 different kinds. This one with a modified tail... The main rotors, even though mangled, look the same as any others we use. My guess is reducing heat and sound signatures, but that's about it
Oh, what an awesome turn to the story.
[QUOTE=Apache249;29626798]So that explains the unique sound of the HH65. [media]http://www.youtube.com/watch?v=gytm409IdeE[/media][/QUOTE] Those helicopters, the 365F and such, have a nice unique sound, I love it
Probably cost a fortune..
[QUOTE=mastermaul;29627998]You didn't know the US used helicopters?[/QUOTE] me gusta I meant in the bin laden operation
[QUOTE=Cajun;29625521]a bomb[/QUOTE] Oh my god bomb, a JC.
WUBUBUBUBUBUBUBUBUBUBU. Not very stealthy.
Damn, looks like the Comanche got fat. [QUOTE=mastermaul;29625502]I think if they were that important the US would have got the wreckage out fast.[/QUOTE] Maybe they just decided that it doesn't really matter if it stays a secret or not anymore, beings shot down was very likely to happen anyway, they just didn't want to fuck up their chance of getting Osama. [QUOTE=ridinmybike;29625589]well it crashed so it can't be that great[/QUOTE] Well, I'm sure it isn't stealthy when it comes to visibility, the Bin laden compound guards probably saw it landing and shot it down. They probably used it to avoid Pakistan radars and avoid getting a Stinger missile to the engine while on the way to the compound.
Still find it kinda strange that for such a high profile operation with high risk (Practicly invading Pakistan is no small feat) they didn't have a DART team on standby to recover the chopper in case of mechanical failure. Would be crazy if it was some lucky shot with an Anza that took it out (although the tweets do sugest otherwise)
[QUOTE=Apache249;29626798]So that explains the unique sound of the HH65. [media]http://www.youtube.com/watch?v=gytm409IdeE[/media][/QUOTE] The sound of the Dauphin has always intrigued me...
My uncle was a head engineer designing the Apache helicopter, because of this he travels to almost any country where one downs that isn't shot down. I can't say exactly where he's been but lets just say he's seen the 'glorous leader's' great mountain ranges, he was visiting me when Osama was killed and the next day him and his whole family just left, leaving me to believe he is at the crash site in Pakistan right now.
[QUOTE=bluesky;29629995]My uncle was a head engineer designing the Apache helicopter, because of this he travels to almost any country where one downs that isn't shot down. I can't say exactly where he's been but lets just say he's seen the 'glorous leader's' great mountain ranges, he was visiting me when Osama was killed and the next day him and his whole family just left, leaving me to believe he is at the crash site in Pakistan right now.[/QUOTE] But the wreckage is not part of an Apache helicopter, that much is clear.
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