MTM Posted August 17, 2022 Posted August 17, 2022 Greetings all! Quick question about the Harpoon… when you have a moving ship locked on the radar and you launch a harpoon in R/BL mode, is the harpoon supposed to fly to an intercept point or does it head to the location where the ship was when it was launched? When I launch them at moving ships from 40+ miles, they often miss behind the ship.
Tom Kazansky Posted August 17, 2022 Posted August 17, 2022 (edited) Have you tried to give the Hapoon a longer search range by activating them earlier? This way the speed of the target has less impact. edit: or did your Hapoon lock the target and has been "outturned"? Hard to imagine that a moving target of the size of a navy ship with 10 to 30 knots could do that. Edited August 17, 2022 by Tom Kazansky
MTM Posted August 17, 2022 Author Posted August 17, 2022 Haven’t noticed that as one of the parameters you can change, but I’ve set SEEK to large and that seems to improve the chances of the missile finding the target. Is that what you’re referring to?
Tom Kazansky Posted August 17, 2022 Posted August 17, 2022 Yes, that's it. IIRC large is 30 km, medium is 20 and small is 10.
MTM Posted August 18, 2022 Author Posted August 18, 2022 I possibly found the problem, but for all I know, this might be correct behavior for the Harpoon… I tried getting a radar lock on a ship and then launching a Harpoon in BOL after manually entering the bearing to target. The bearing I entered was 023 dgrs, but I noticed the bearing it flew was 018 dgrs. So it was off by ~5dgrs. This was on the Caucasus map, where magnetic deviation is ~6 dgrs (I think). So, I input a true heading, but the missile flew a magnetic heading? Anyone else see the same behavior?
Anubis_94 Posted September 7, 2022 Posted September 7, 2022 (edited) On 8/17/2022 at 8:48 PM, Tom Kazansky said: Have you tried to give the Hapoon a longer search range by activating them earlier? This way the speed of the target has less impact. edit: or did your Hapoon lock the target and has been "outturned"? Hard to imagine that a moving target of the size of a navy ship with 10 to 30 knots could do that. Hello, Last time we check, the harpoon launched in R/BL go straight for the target at the time of launch. No idea if this is this the real behavior, but it feels weird as the weapon system could deduce an interception bearing (for a weapon mode that allow to select a specific moving target, it would makes sense). The seek range is an independent setting that may mitigate this and get the harpoon back on target, but isn't related. Edited September 9, 2022 by Anubis_94 1 Squad channel
Ignition Posted October 24, 2022 Posted October 24, 2022 On 8/18/2022 at 9:50 AM, MTM said: I possibly found the problem, but for all I know, this might be correct behavior for the Harpoon… I tried getting a radar lock on a ship and then launching a Harpoon in BOL after manually entering the bearing to target. The bearing I entered was 023 dgrs, but I noticed the bearing it flew was 018 dgrs. So it was off by ~5dgrs. This was on the Caucasus map, where magnetic deviation is ~6 dgrs (I think). So, I input a true heading, but the missile flew a magnetic heading? Anyone else see the same behavior? I believe all the aviation uses magnetic. Maybe in todays age the military uses true.
Dragon1-1 Posted October 24, 2022 Posted October 24, 2022 NATO uses magnetic, Russians use true because much of their landmass is up north, where magnetic variation can be large. When flying in very northern latitudes, western and NATO aircraft also switch to true. 1
Anubis_94 Posted Saturday at 06:58 PM Posted Saturday at 06:58 PM (edited) Hello, Updating this thread with another illustration of what seems to be a weird trajectory/behavioir for harpoons. They go for a basic heading of the target at release time, until a certain moment when they do a first turn that sort of fix their trajectory (radar lock? if yes why no track trajectory ?) And at last, a final turn after the radar lock. This is not really an issue for a monotarget mission. But, for a multi target mission, of a -precision- attack in a convoy (like, millitary ship only/first), this is an issue. Especially with the way the missile pick its target. Missiles come "late" on the target, and pick one. Probably the first their radar can pickup. Track on DCS 2.9.21.16552 Harpoon_trajectory_multitarget.trk So, we have two questions: Why don't they intercept the moving target directly? TDC from WW2 submarine can do it Why don't they correlate the correct predicted position of the target to get the correct one ? If ships evade, ok, they can pick the wrong one. But if they don't they could. Harpoon_trajectory_multitarget.acmi Harpoon_trajectory_monotarget.acmi Edited Saturday at 07:00 PM by Anubis_94 Squad channel
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