05-05-2011, 09:02 AM | #1 | |
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Stealth Helicopter?
Top Secret Stealth Helicopter Program Revealed in Osama Bin Laden Raid: Experts
Link Quote:
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05-05-2011, 09:02 AM | #2 |
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True or not, it's a fairly interesting concept.
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05-05-2011, 09:14 AM | #3 | ||
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interesting. wouldnt be the first time we've had "new" technology "revealed"
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05-05-2011, 09:18 AM | #4 |
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MAkes sense they have been doing this to warships for years and of course the stealth bomber. It makes them impervious to radar.
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05-05-2011, 10:16 AM | #5 | |
Onward and Upward.
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Also, I'm not sure how much noise mitigation they've come up with over the years but from personal experience, a person can hear a helicopter coming from pretty far out depending on wind direction/velocity, altitude of the aircraft, etc. Still, it's a cool concept... I just don't think that the physics of how a helicopter flies supports it.
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05-05-2011, 10:49 AM | #6 |
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This really sucks, because the parts that are left are in the hands of Pakistan, and could be sent to the Chinese. If our leaders had any brains they'd demand the parts back or the Pakistani's get no more aid.
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05-05-2011, 11:06 AM | #7 |
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>>If our leaders had any brains........
LOL! If that were true, there's a whole lot of problems we wouldn't have!
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05-05-2011, 11:09 AM | #8 |
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yep
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05-05-2011, 11:17 AM | #9 |
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Anyone who watches KOTH have known about them for years.
"In episode 4 in the first series of the American television series King of the Hill, Dale Gribble claims a noise to be that of "one of those stealth helicopters with computerised noise- cancellation capability... they're still workin' the 'chings' out." When Bill Dauterive asks him how he knows about stealth helicopters, Dale replies: "alt.conspiracy.black.helicopters"." |
05-05-2011, 11:19 AM | #10 | ||
Camaro➎ moderator
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05-05-2011, 12:15 PM | #11 |
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I think the Chinese are still trying to reverse engineer our stealth plane that got shot down 20 years ago.
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05-05-2011, 01:06 PM | #12 | ||
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I'm still interested in the role of the RQ-170
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05-05-2011, 01:11 PM | #13 | |
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You'd be surprised what we can do do minimize the sound signature on approach... Now in a hover that's a differnt story... you are obviously most vulnerable and noisy when in a hover.
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05-05-2011, 01:19 PM | #14 | |
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So, it's all based on the angle of attack of the blades and the rotor head which on an H-60 is a fully articulated rotor head... the rotor head can pivot in all directions and the blades twist on their longitudinal axis... this combined with the angle of the helo results in accelleration or deceleration, The angle of the blades will result in Climb or decent. but the pilots are trained to know what angles are quieter than others to help with the element of surprise.... edit: Note in the two pics below the rotor RPMs are nearly identical. this image is a helo accellerating forward and climbing... This pic gets my blood pumping.. This one is of decelerating and decending into a hover.
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