Eddie Posted April 11, 2013 Posted April 11, 2013 No. Wind is not factored by IFFCC Yes, it most certainly is. I can only think you mean to say the effect of wind on the submunitions after release from the SUU-65 is not acounted for by the IFFCC. And that would indeed be correct. The IFFCC can only calculate ballistics based on the data for the weapon being released, and the data is has available for wind etc. What happens to the submunitions after release is not accounted for, the main reason for this is that quite simply in the second or two between submunition release and detonation, there is not enough time for wind to have a significant impact on submunition accuracy. Even in the case of BLU-108s.
Oznerol256 Posted April 11, 2013 Author Posted April 11, 2013 What happens to the submunitions after release is not accounted for, the main reason for this is that quite simply in the second or two between submunition release and detonation, there is not enough time for wind to have a significant impact on submunition accuracy. Even in the case of BLU-108s. With the default HoF setting (what ever that specifies) the BLU-108s hang about 35 seconds on the chute. Apparently, this timeframe is long enough to make the BLU-108s drift away. I have made a short video to show what happens when using default settings. The BLU-108s drifted quite a bit and that resulted in only hitting two T-55s and destroying one of them. There are no wind settings in this mission. To increase the effect of the bomb, what should i do? Lower the HoF and thats it? If you want to see second CBU-105 run and me going guns after that you can download the track.CBU-105 test track 1.trk [sIGPIC][/sIGPIC]
Eddie Posted April 11, 2013 Posted April 11, 2013 Yes lower the HoF, the optimum is around 500-700 ft for the CBU-97, depending how flat the terrain is etc. HoF does not impact the footprint of the submunitions in DCS.
Sierra99 Posted April 11, 2013 Posted April 11, 2013 Yes, it most certainly is. I can only think you mean to say the effect of wind on the submunitions after release from the SUU-65 is not acounted for by the IFFCC. And that would indeed be correct. The IFFCC can only calculate ballistics based on the data for the weapon being released, and the data is has available for wind etc. What happens to the submunitions after release is not accounted for, the main reason for this is that quite simply in the second or two between submunition release and detonation, there is not enough time for wind to have a significant impact on submunition accuracy. Even in the case of BLU-108s. Yeah, I should have stated that clearer...I'm flipping back and forth between the Dash-1 and here and lost something in translation :doh: The long and short of it... I set my CBUs for 700-900 feet depending on if I am after armor and want lost of sheets close together or trucks where I want more coverage. Sierra. [sIGPIC][/sIGPIC] Primary Computer ASUS Z390-P, i7-9700K CPU @ 5.0Ghz, 32GB Patriot Viper Steel DDR4 @ 3200Mhz, ZOTAC GeForce 1070 Ti AMP Extreme, Samsung 970 EVO M.2 NVMe drives (1Tb & 500 Gb), Windows 10 Professional, Thrustmaster Warthog HOTAS, Thrustmaster Warthog Stick, Thrustmaster Cougar Throttle, Cougar MFDs x3, Saitek Combat Rudder Pedals and TrackIR 5. -={TAC}=-DCS Server Gigabyte GA-Z68XP-UD3, i7-3770K CPU @ 3.90GHz, 32GB G.SKILL Ripjaws DDR3 @ 1600Mhz, ZOTAC GeForce® GTX 970.
ENO Posted April 11, 2013 Posted April 11, 2013 (edited) I was under the impression that the wind corrections- even if inputted- had a negligible impact on accuracy. Perhaps I read that wrong... however I was made to believe it was something that will eventually make its way into the sim. Manually dropping while accounting for wind works fine... but I don't know if it's programmed into the computer properly yet. I'm wondering if the computer takes your drop parameters for the 105 and tries to put the bomb in the space (HOF altitude) between your aircraft and the ground being marked by your pipper. If it knows it's going to open / function and essentially terminate guidance at a certain altitude, is it going to correct to that specific spot (500 feet off the ground between you and the pipper) for example? We're assuming the can is going to break automatically in a place where submunitions will land on the pipper- so we're putting the pipper on target. Should we be placing the pipper / SPI at the location where we want the can to open above so that the wind can distribute the unguided munitions in the way we see fit? Am I making any sense? Edited April 11, 2013 by ENO "ENO" Type in anger and you will make the greatest post you will ever regret. "Sweetest's" Military Aviation Art
Eddie Posted April 11, 2013 Posted April 11, 2013 I was under the impression that the wind corrections- even if inputted- had a negligible impact on accuracy. Perhaps I read that wrong... however I was made to believe it was something that will eventually make its way into the sim. Manually dropping while accounting for wind works fine... but I don't know if it's programmed into the computer properly yet. Don't confuse manual wind data entry, which is not implemented, with IFFCC wind correction which is. The IFFCC always corrects for wind, and always has. This is done using the exact same wind data that is used when calculating where to put your flight path marker. The IFFCC takes the current wind at your altitude and then calculates the winds down to the ground, assuming the wind is always zero at -4000 ft MSL. The manual wind data entry that was all the rage around here, is what does not work, and even if it did work it isn't needed 99% of the time. Should we be placing the pipper / SPI at the location where we want the can to open above so that the wind can distribute the unguided munitions in the way we see fit? For CBU-97/105, yes. At least in DCS.
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