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I was at an airshow in South Africa, and they had this trailer sitting about. No one knew what it is.

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Those little red plates all say "warning, high voltage". Those buckets are open at the bottom, and made of aluminium.

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These finned pointy things are hollow, not sure what they are made of. Were not solid plastic, but didn't look like fiberglass either.

A couple of specific questions:

  1. What is it?
  2. If the hollow things are covers, why are they so oddly shaped? And if they are covers, why do they share features with liquid tanks?
  3. Why are there half a dozen "High voltage" stickers attached?
  4. What are those bins and chains?
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    $\begingroup$ it's an AA system and the hollow things are covers that protect the missiles underneath. I'm not completely sure this is on topic, but I'll leave the decision to the others. $\endgroup$ – Federico♦ May 7 '17 at 20:16
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    $\begingroup$ Tigercat renamed Hilda by South Africa. Same launcher. $\endgroup$ – mins May 7 '17 at 21:17
  • $\begingroup$ @Federico Quite difficult to say if it is on topic or not. If this is a AA system, it is closely related to militarty aviation and could be accepted here. $\endgroup$ – Manu H May 16 '17 at 8:21
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@mins got this one right. It's a British Tigercat short range surface to air missiles launcher system. The cones are protective weather covers for the missiles which are removed prior to launch.

As to the 'buckets and chains' I'd venture a guess that they are a device to deflect and dissipate the rocket blast during launch but I am not totally sure. But they can be seen on YouTube (at 0:07 and 0:39).

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From YouTube, on the right the blast being deflected up/down.

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    $\begingroup$ You can see the "buckets" deflecting the rocket blasts in a few frames around 0:07 of youtube.com/watch?v=qLwXYNF2VdM, and again for a bit longer at 0:39. $\endgroup$ – Jason C May 8 '17 at 3:54
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    $\begingroup$ @JasonC I hope the pilots has already bailed out of those aircraft... $\endgroup$ – Notts90 May 8 '17 at 7:58
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    $\begingroup$ I guess the wire mesh, which is tightened by springs, is to protect from anything not gas in the exhaust. $\endgroup$ – mins May 8 '17 at 12:37
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    $\begingroup$ I am amazed by how short those missiles are. I think that is why everyone disregarded it as a SAM $\endgroup$ – Roman May 8 '17 at 12:40

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