Frederf Posted April 28, 2011 Posted April 28, 2011 (edited) But does Laser improve CCIP accuracy also? TGP does never point at CCIP reticle. Regards! Yes as you will be superimposing the CCIP dot on a more accurately positioned SPI on release. 1. No, CCIP is not affected by laser slant information at all. 2. TGP will point at the CCIP if you have CCIP active, set SPI IFFCC, and slave all sensors to SPI. TGP set to SPI (Sensor Point of Interest, TMS forward long) the FCC uses the INS-determined position of the TGP diamond. Only for CCRP If you fire the laser briefly, it actually bounces off the target and gives you more precise distance information, which the computer uses to update the position originally determined by the TGP.You must have the laser ranging active during the measurement in question. Once laser rangefinding ceases it reverts to the passive position determination. For example, lasing, cease lasing, create mark point: mark point will be made using passive positioning. Only if the mark point, JDAM drop, etc. is made during active rangefinding will the accuracy be improved. Your goal then, is to get the bombsight pipper (CCIP reticle pipper) OVER the TGP diamond, which should be on the target, or where you'd like the bomb to land.If you bomb the diamond you'll be bombing where the TGP LOS is located which means the IFFCC will drop where this LOS (same LOS for pilot and TGP since they share position) meets the DTSAS (or hot elevation) surface. Thus it's the same as bombing without using the diamond at all. Of course if you're bombing a static target you want to use area mode and point at the ground under the target. If it's a moving target accuracy is already out the window in the first place. Unless you're bombing SPI (i.e. CCRP) then SPI location is irrelevant. If you are bombing SPI then SPI is the only thing that matters. In the case of bombing SPI with MK-82AIRs it's good to keep in mind where accuracy or lack of accuracy is coming from. If your lased or un-lased SPI are less than 50' apart don't bother worrying about it. Getting worried about parallax error and pinpoint accuracy is like asking the Germans which house in London they aimed the V-2 rockets at. It's ludicrous. FFARs look like precision weapons compared to MK-82AIRs. Typical drop will be 4-8 AIRs at 1,000' or less at minimal spacing and it will be a blanket effect. There's even a limitation in the ripple clock, meaning there is a minimum time interval that the A-10 can drop bombs at separate pulses. Try setting a maximum 8 at RPL SNG at 10' spacing and do a level drop at 300 knots. Your pattern will not be 80' long. Also note you can't drop 5/7 as pairs so I don't like to put AIRs on 5/7. Edited April 28, 2011 by Frederf
amalahama Posted April 28, 2011 Posted April 28, 2011 (edited) 2. TGP will point at the CCIP if you have CCIP active, set SPI IFFCC, and slave all sensors to SPI. No it won't. In that case, TGP will point to TVV instead. AFAIK there is no way to point TGP to CCIP reticle, excepting playing with Mark Z after weapon release. Regards! Edited April 28, 2011 by amalahama
JoeDiamond Posted April 28, 2011 Posted April 28, 2011 No it won't. In that case, TGP will point to TVV instead. AFAIK there is no way to point TGP to CCIP reticle, excepting playing with Mark Z after weapon release. Regards! It does point to the gun and CCIP reticle. From the manual, pg. 398 "Select HUD SPI submode – If the HUD is selected as the SOI (default) and this function is selected, the GUN and CCIP pippers act as the SPI (depending on the HUD Mode – if NAV or AIR-to-AIR mode this makes the steerpoint the SPI as well). TMS Aft Short."
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