jasonbirder Posted July 24, 2020 Share Posted July 24, 2020 Hi Guys! Wonder if anyone can enlighten me as to the correct process for using the In-Flight ALignment functionality? (I have it in mind that flying straight/level/fixed speed for a set amount of time comes into it) IS there any difference between using it if you haven't performed a Ground alignment compared to using it to update the alignment? Cheers Link to comment Share on other sites More sharing options...
Yurgon Posted July 24, 2020 Share Posted July 24, 2020 Haven't used it in ages. I do believe you're required to fly as straight and level as you can for in-flight-alignment to work properly. However, I believe this is not currently modeled in DCS and you can actually fly an airshow program, and the INFLT will still work perfectly fine after a fixed amount of time. In the manual, I couldn't find too much info. Most prominent is this part: INFLT (In Flight) Alignment, R5. If the INS alignment needs to be re-aligned while the aircraft is in flight or moving on the ground, this option is used. This alignment process uses current position and velocity measurements from the INS. Before starting an in flight alignment, EGI, STR PT and ANCHR should be deselected from the Navigation Mode Select Panel or select HARS. The EGI GPS will then be used to align the EGI INS. This process can take between 5 and 10 minutes. Link to comment Share on other sites More sharing options...
Stuka Posted July 24, 2020 Share Posted July 24, 2020 RL you’re actually not supposed to fly as straight as possible, but make gentle turns instead. Windows 11 | i9 12900KF | 64GB DDR4 | RTX 3090 | TM Warthog HOTAS | Saitek Combat Rudder Pedals | TM MFDs + Lilliput 8" | TIR5 Pro Link to comment Share on other sites More sharing options...
Yurgon Posted July 24, 2020 Share Posted July 24, 2020 RL you’re actually not supposed to fly as straight as possible, but make gentle turns instead. Huh, good to know, thanks! Link to comment Share on other sites More sharing options...
QuiGon Posted July 24, 2020 Share Posted July 24, 2020 RL you’re actually not supposed to fly as straight as possible, but make gentle turns instead. Interesting. I wonder what are the technical implications behind this? Especially as you stand still during a normal alignment :huh: Intel i7-12700K @ 8x5GHz+4x3.8GHz + 32 GB DDR5 RAM + Nvidia Geforce RTX 2080 (8 GB VRAM) + M.2 SSD + Windows 10 64Bit DCS Panavia Tornado (IDS) really needs to be a thing! Link to comment Share on other sites More sharing options...
mvsgas Posted July 24, 2020 Share Posted July 24, 2020 (edited) Interesting. I wonder what are the technical implications behind this? Especially as you stand still during a normal alignment :huh: I don't know about the A -10, for some F-16 INS/EGI versions: Performing a double-drift maneuver (turn off heading about 45 degrees, then 90 degrees in the opposite direction, then 45 degrees to resume course; maintain each heading change for 1 minute minimum) tends to enhance and hasten the determination of true heading by the master navigation from GPS true course data Keep in mind, in these versions of the INS/EGI, In Flight Alignment (IFA) is for emergencies and will require true heading from Wingman or other outside sources and is just to get you home, not to continue the mission. Additionally, not sure if it relates to the A-10 (any versions) or any other real aircraft. Edited July 24, 2020 by mvsgas To whom it may concern, I am an idiot, unfortunately for the world, I have a internet connection and a fondness for beer....apologies for that. Thank you for you patience. Many people don't want the truth, they want constant reassurance that whatever misconception/fallacies they believe in are true.. Link to comment Share on other sites More sharing options...
QuiGon Posted July 25, 2020 Share Posted July 25, 2020 I don't know about the A -10, for some F-16 INS/EGI versions: Keep in mind, in these versions of the INS/EGI, In Flight Alignment (IFA) is for emergencies and will require true heading from Wingman or other outside sources and is just to get you home, not to continue the mission. Additionally, not sure if it relates to the A-10 (any versions) or any other real aircraft. Thanks, also this still doesn't explaion the technical background on why those maneuvers help with alignment. The ground alignment works fine without any movements, so I wonder what exactly is happening during an IFA that requires maeuvering. Intel i7-12700K @ 8x5GHz+4x3.8GHz + 32 GB DDR5 RAM + Nvidia Geforce RTX 2080 (8 GB VRAM) + M.2 SSD + Windows 10 64Bit DCS Panavia Tornado (IDS) really needs to be a thing! Link to comment Share on other sites More sharing options...
Biga42 Posted July 25, 2020 Share Posted July 25, 2020 Look at the page 169 of the manual, HARS Control Panel. Maybe help you figure out. Link to comment Share on other sites More sharing options...
Stuka Posted July 26, 2020 Share Posted July 26, 2020 Checked it again: the aircraft must be in a straight flight when initiating the INFLT, and you have to stay steady until the flashing asterix becomes steady. Once that is steady, you can speed up the alignment by doing gentle S-turns of approx 30 degrees of bank. Windows 11 | i9 12900KF | 64GB DDR4 | RTX 3090 | TM Warthog HOTAS | Saitek Combat Rudder Pedals | TM MFDs + Lilliput 8" | TIR5 Pro Link to comment Share on other sites More sharing options...
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