Question: Does any other country posses Stealth Bombers? - Page 3




 
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June 3rd, 2004  
Marksman
 
 
That was the second one which was shoot down on optical sight while prepearing to have a drop.
Actualy rocket exploded very near him which brougt him down
June 3rd, 2004  
1217
 
Who wants to take a guess how old the F-117 design is? The new types are even better.
June 3rd, 2004  
Mark Conley
 
 
oh id say the design has now celebrated its 25 birthday...and its still very good. most nations just cant see em at all...with a rada. now the old mark 1 eyeball on the other hand..can still spot em.

You really have to remember what the primary job of these planes were when they were first designed..a complete hatchet job on all the airborne command and control aircraft of the soviet airforce during any conflict involving the NATO and Warsaw pact nations. now, they are being used in the same role, but in limited conflicts. The older they get, the more tweaking to keep them radar invisable is needed. Anything that changes their shape..dings, hogging, or light bending changes their stealth characteristics.

Id say they will probly be retire to museams in about 10 years....with a hell of a battle record to be proud of.

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June 5th, 2004  
hirogenalpha
 
I was under the impression that stealth technology simply diminished the aircraft's radar signature, for example the SR-71 "Blackbird" had the radar signature of a small car and the F-117 has the radar signature of a 1 inch diameter ball bearing
June 5th, 2004  
Mark Conley
 
 
Well, actually itís more than that. Stealth is trying to make the plane less observable to the defense .in as many aspects of detection as possible. So it can get in and do its main work.

Low observable technologies refer to the way the attacker prevents the defense force from detecting the aircraft by the technology adapted to it.

Lets look at an F-117 for the examples of low observable technology that make the plane stealthy.

RADAR - the signal that bounces back to the receiver identifies it right? So if you reflect the signal away from the receiver, absorb it, or change its frequency, this mean the receiver doesnít see the signal and the plane isnít there.

The F-117 does two of these processes: The angled skin redirects the signal away from the receiver, and RAM coating absorb some of the signal.

Noise: the Soviet Union had one of the largest networks of listening devices in the world to detect the high pitch noise of the engines or exhaust for a planes detection.

The F-117 buried both engines deep in the fuselage, made two small engines instead of one, and fanned the exhaust to break up the sound waves.

Heat: The plane releases heat in the form of the engine, and exhaust, which can be detected on an infra-red optical display.

F-117 defeats this by a high capacity fan attached to the compressor section, which routes cold intake air around the engine casing cooling it down, and mixing with the exhaust before it exits the fan. Pre-cooling the exhaust and breaking it up cools it quicker.

Mark 1 Eyeball: Hell, you can see it.

F-117 is painted black, and works at night. You are very lucky to see it all.. They tried to place lighting on it, to give it a daytime capability, but it failed miserably.

Now they have new ways to detect things...my favorite is like a weather radar...instead it works on the probability that a moving group of nothing might be something worth detecting.
June 5th, 2004  
1217
 
Quote:
Originally Posted by Mark Conley
Now they have new ways to detect things...my favorite is like a weather radar...instead it works on the probability that a moving group of nothing might be something worth detecting.
Yep, that would do it... then you'd have to build a plane that would copy the radar signal and sent it on at the other side... but I don't think that's doable (yet)