I was wondering if there is a name for this particular structure on Su-27 and F-22 and if they serve any function?




1 Answer 1


On the SU-27 that is where the rear fire control radar is housed. On the F-22 it is the runaway arrestor hook housing.

  • 3
    $\begingroup$ runaway arrestor ? Like some kind of Blade Runner ? $\endgroup$
    – Jeffrey
    Apr 26, 2022 at 0:39
  • 1
    $\begingroup$ @Jeffrey Ever seen the ramps on highways for runaway trucks whose brakes have failed? Similar concept. On a military runway you install something like this safran-group.com/products-services/… so aircraft whose brakes have failed and don't have any other means of slowing down other than an arrestor hook can safely come to a stop. And yes, something like a blade runner. :) $\endgroup$ Apr 26, 2022 at 17:44
  • $\begingroup$ @JuanJimenez, do you have a reference for the Su-27 rear fire control radar? I'm curious about that. Thanks. $\endgroup$
    – Tyler
    Sep 14, 2022 at 21:36
  • $\begingroup$ @Tyler I did a little more research and I think it may be the radar illumination warning system component of the fire control system, and I am not even sure if that wording is correct. There is an SPO-15 Beryoza system for that with an indicator in the cockpit (on the bottom right hand side of the instrument panel), and I think I found that the rear boom also contains the chaff dispensing system. The info I found suggests it is also used in the Mig-29 and Chinese J-11. I am not really an expert on this, I just digged up the best info I could find. $\endgroup$ Sep 15, 2022 at 22:44

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