46

An IR sensor detects objects that are at a higher (or lower but that's not how missiles work) temperature than the surrounding environment, most of the helicopter won't be that much hotter or cooler than the air around it, so wouldn't distinguish it much unless you get very close. Jet engine exhaust is much hotter than the surrounding environment, so it ...


22

There are many anti-radiation missiles in many arsenals, they are designed for air to ground missions, attacking surface to air missile radars from a long distance. I don't know whether it would be possible for an anti-radiation missile to hit an air target. If we assume it is possible your idea has a significant flaw in that stealth aircraft turn off their ...


17

To add to GdD's fine answer: The environment provides plenty of different heat sources for the missile to see. To get a target lock, the "signature" of the heatsource has to be of quite a specific kind. Anything simply hotter than the surroundings will not be sufficient. The specifics of the way a missile lock is aquired and maintained is of course ...


13

If the stealth aircraft's radar were continually transmitting, then, yes, the other stealth features would be completely useless, and missiles would easily home in on them and shoot them down. Which is why the radar on stealth aircraft are very rarely used. Anti-radiation missiles are much more dangerous against ground radars precisely because they are in a ...


9

Yes, but such aircraft can turn off their active emissions (radar, EM jammer, communications etc etc.). And AESA radars can be very select about in which directions it emit to not make the aircraft detected to known threats. There is also missiles with Home on Jam capabilities. So if you jam to disguise your position for example, such missiles can home in on ...


7

I don't have rep to comment, so this answer is more of a side note, that stealth fighters have been trackable for decades. The TAMARA radio system from what was Tesla Electronics (former Czechoslovakia) involved a large network of receivers that could correlate reflections from radio signals, and also identify the communication between onboard weapon systems,...


7

As an addition to other answers: To form a picture of the battlefield situation, the radar system of a stealth aircraft (or any radar for that matter) does not need to transmit all the time. It can blib or burst a signal, or perform a sweep for more resolution, and then hibernate. It can also "listen" to other radar signal sources and echoes and ...


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