Soviet K-13 Atoll missile IR seeker teardown

It is also know as the R-3S "Atoll"

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[alancordwell]

Very interesting! The seeker is supposed to rotate off centre I think, because it uses conical scan. When it sees a target off-centre the sensor output is an AC signal which can be compared to the phase of rotation of the assembly to determine which way to fly. when the target is dead ahead the output is equal for all rotational angles and the missile flies in a straight line. Joyeux Noel and thanks for all your amazing videos!

[metersocket]

Interesting to think that all that precise equipment was meant to be blown up. I guess missing a target is really expensive. Great tear down!

[holyravioli]

These IR seekers always seem to be some of the most impressive technology on this channel.

[bertkoerts]

I’m a amateur rocket builder (webuild in a team), and it is very interesting to see the difference between good (motivated, young, very up-to-date) amateurs compared to the professional thing. There is definitely a time gap. But in an industrial design, it has to be proven, easy to assemble etc. Thanks for making this available to us! 👍😊 Also the soviet dimension is really interesting to see. Sometimes I have the impression the the USSR was better organized/developed the russia today…. Thanks again! 👍😊

[ivekuukkeli]

Excellent presentation ! Deep thanks !! Your presentation focuses just on the most essentional parts of this missile with very clear pronoucening, easy to understand.

[radoslawbiernacki]

38:20 this wobbling is intentional as seeker would be unable to track the target once it is dead straight in its front. It also helps to search the target as seekers looks in circles around some spot. The balance screws are for elimination of vibrations caused by off center rotations.
I was expecting that you will disassemble the head more to see the blindings as there is all the engineering beauty which makes this deadly beast working so simple yet effective.

[nicholasmaude]

The reason you can only spin the seeker's optical assembly and not swivel it is because the telescope assembly is caged (It requires the launch acceleration forces to uncage it).

[nicholasmaude]

It would be interesting if you could measure the diameter of the primary and secondary mirrors plus provide a detailed description of the reticle.

[radoslawbiernacki]

32:25 The seeker head track the target by rotational movement of the blinders, not by gimbal of the sensor element as you suggest.
The K-13 is just a copy of Sidewinder system which has sound feedback system for the pilot, commonly known as "growling" sound.
This growling is caused by heat being interrupted by rotating blinders which you shown at the beginning of the video.
By correlating the rotate angle and amplitude of the emission the seeker is able to estimate the vector and angle of missile correction (signal phase to amplitude conversion).

[TMS]

what crazy things on ebay! 60k is actually slow for a turbogenerator. automotive turbos run around 100k rpm and this one looks really small in comparison.

[bblod]

Cool teardown. Thank you.
Merry Christmas.

[Bobby-lvkr]

Few years back in Syria, rebels got their hands on lots of K-13 missiles, then they removed the seeker part and used rest of the body as unguided but very fast rockets to fire at enemies, At that time I was hoping the spread of these seekers in junkyards but no luck.

[TheChipmunk]

The written values on eastern bloc resistors I found incredibly helpful (being colourblind but having sharp eyesight).

joyeux noël et bonne année :)

[ahmetizmir]

33:15 Those black protrusions may be to prevent sunlight reflection from reaching the concave mirror. The reason why the concave mirror rotates crookedly may be to widen the viewing angle.

[jeremymcadam]

Are you going to reassemble the missile? Why worry about removing the potting?

[rpattnaik]

Woowww The most interesting find of today! Great video. Great Job Sir!

[alklapaxida]

very nice videos sir !, even nicer workshop i must say ! Regards from VK3

[aptech]

Another awesome video, Marry Christmas and a Happy new Year.

[MA-nxxj]

Hi, I think the fins on the black blind are there to reduce glare.
I remember reading about it on a Russian manual from where rbase took their info.
I'll try to post it or sent it through private message

[stepanf]

Happy grunting Christmas! :) You should remove the potting. The secrets must be revealed.