🚀 go-pugleaf

>>AIM 9B Sidewinder heat seeking missile guidance device.  It sat in the
>>nose of the missile and tracked the infared "signature" of the target
>>via a telescopic optical unit.
>
>The last (and only) heat-seeking doodad I saw required a liquid
>nitrogen (or something like that) supply to cool the sensor assembly
>down to the point where it would work.  I wouldn't be surprised if this
>assembly needed the same thing.  Not too practical for handheld use!

I think this might be the gyroscopic one.  Science or Scientific
American had a good article on it.  Simple and cheap.  The only thing
required was some electricity to spin the gyro and the IR sensors would
do the rest.  (This is all of recollection on my part so pardon me if
Alzhimers is setting in at the ripe old age of 25... :-) )

Haltek is selling them as well.  I think they had an add on the back of
Nuts and Volts.  (Anyone got a lifetime subscription yet outside of CA?)


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