Tyrant07 Posted October 26, 2017 Posted October 26, 2017 While flying in multiplayer on 2.1, I sometimes get the bug where my HUD is sideways or angled weirdly and my HSI shows that i am at a 10+/- pitch while straight and level. Because of this when I engage altitude hold, the aircraft violently pitches causing a blackout or stall (depending on the error). I had encountered this error a few months ago on 1.5 but I was under the impression that it had been fixed. This does not happen every time, but it happens enough to become annoying. Is there something I am doing wrong during the startup procedure to cause this error?
RagnarDa Posted October 27, 2017 Posted October 27, 2017 Do you allow time for the ADI to align? When it is starting up it is using a gravity sensor to align itself with the ground. If the airplane is accelerating in any direction during this alignment (like rolling on the taxiway) the movement will be interpreted as gravity. For example if you are speeding up forward the ADI will align itself so the indicated horizon will be lower than the real horizon. DCS AJS37 HACKERMAN There will always be bugs. If everything is a priority nothing is.
Tyrant07 Posted October 27, 2017 Author Posted October 27, 2017 Do you allow time for the ADI to align? When it is starting up it is using a gravity sensor to align itself with the ground. If the airplane is accelerating in any direction during this alignment (like rolling on the taxiway) the movement will be interpreted as gravity. For example if you are speeding up forward the ADI will align itself so the indicated horizon will be lower than the real horizon. My startup procedure is to insert the data cartridge, turn on generator, main elec power and fuel valve. I then start the engine and wait for the computer to come online. Once the computer's number are displayed I input the 9099 code and then start inputting my flight plan. I typically leave the Radar in standby mode until I am on the runway and then turn it to NAV and make sure the heading matches that of the runway. Its when I turn the radar to NAV that I discover the HUD alignment issues. I've used this startup technique since Feb and has worked fine until the recent issues. Am I missing some steps? How long am I supposed to wait for the ADI to align? I couldn't find that info in the manual.
RagnarDa Posted October 27, 2017 Posted October 27, 2017 Hmm... I checked and the alignment time for the ADI is about 30 sec which is the same as for the CK so if you have time to load the cartridge it should have time to align itself. Do you experience this after respawning, possibly after receiving battle damage? DCS AJS37 HACKERMAN There will always be bugs. If everything is a priority nothing is.
razo+r Posted October 27, 2017 Posted October 27, 2017 It happened twice in a row to me. I got killed by a missile so I respawned and then my ADI was misaligned.
Tyrant07 Posted October 27, 2017 Author Posted October 27, 2017 Hmm... I checked and the alignment time for the ADI is about 30 sec which is the same as for the CK so if you have time to load the cartridge it should have time to align itself. Do you experience this after respawning, possibly after receiving battle damage? Come to think of it, I think the issues are more evident after I re-spawn from being shot down. But I have also seen this issue from a clean connection to the server.
Skyracer Posted October 29, 2017 Posted October 29, 2017 (edited) 1. Put mastermode selector in BER. 2. Hit the re-align button. (The button inside the ride circle) System will now re-align. Note inflight align the aircraft need to be stable. 3. Turn the mastermode back to nav, it should now be G2G! From manual. P88 The fast erect can be repeated in case of an error or failure. This is done by a button on the bottom of the central indicator. Fast erect should be done in acceleration free flight to avoid errors during alignment. Edited October 29, 2017 by Skyracer MY SYSTEM SPECS: Hardware Intel pentium 3 @ 800 MHz, 256 Mb RAM, Geforce 2 64Mb, Dell screen 1024x768 + Microsoft sidewhiner joystick + TrackIR 2 + TrackClitPro SOFTWARE: Microsoft Windows 98, Noice Attack & VIASAT PRO, SnackView
Tyrant07 Posted October 29, 2017 Author Posted October 29, 2017 1. Put mastermode selector in BER. 2. Hit the re-align button. (The button inside the ride circle) System will now re-align. Note inflight align the aircraft need to be stable. 3. Turn the mastermode back to nav, it should now be G2G! From manual. P88 Thanks for the info!
Bad Idea Hat Posted October 31, 2017 Posted October 31, 2017 Hmm... I checked and the alignment time for the ADI is about 30 sec which is the same as for the CK so if you have time to load the cartridge it should have time to align itself. Do you experience this after respawning, possibly after receiving battle damage? Somewhat unrelated, but is that the real alignment time for the Viggen? Because if so, that's amazing. I've gotten so used to INS alignment that the Viggen feels like the first aircraft that I can truly scramble if needed.
Dejjvid Posted October 31, 2017 Posted October 31, 2017 Somewhat unrelated, but is that the real alignment time for the Viggen? Because if so, that's amazing. I've gotten so used to INS alignment that the Viggen feels like the first aircraft that I can truly scramble if needed. It’s built specifically as a scramble capable jet. IRL the ground power connector fall off when you taxi and the hatch closes. So the pilot sets everything up with ground power and wait in a barrack or in pit depending on the alert level. Once the scramble order is received the only thing you do is to flick start, then taxi on a specially designed taxi way straight onto the runway and do a rolling take off. For situations with really high alert pilots had the engine running and ground crew topped of the aircraft when the scramble came. i7 8700K | GTX 1080 Ti | 32GB RAM | 500GB M.2 SSD | TIR5 w/ Trackclip Pro | TM Hotas Warthog | Saitek Pro Flight Rudder [sigpic]http://www.132virtualwing.org[/sigpic]
renhanxue Posted November 1, 2017 Posted November 1, 2017 (edited) Somewhat unrelated, but is that the real alignment time for the Viggen? Because if so, that's amazing. I've gotten so used to INS alignment that the Viggen feels like the first aircraft that I can truly scramble if needed. The SFI (flight manual for the real aircraft) says ADI alignment is done in two stages, starting immediately on main power on (or as soon as there is AC power from the generator, if ground power isn't connected). In the first stage, the gimbal arms are pre-aligned, which takes 32 seconds. The second stage starts immediately thereafter, automatically fast erecting the ADI for a maximum of 70 seconds (the minimum time is not stated). During the second stage the NAVSYST warning should be lit on the annunciator panel (or you might only get a "flag" warning on the ADI itself, unsure). None of the manuals or checklists mention having to wait for the ADI to align though so presumably it aligned fast enough in practice that you never had to wait for it. Keep in mind the Viggen's navigation system isn't really an INS - what's aligning here is just the course and vertical gyros. There is no inertial navigation in the conventional sense, although the nav system does use f.ex. course info from the ADI gyros. Edited November 1, 2017 by renhanxue
Bad Idea Hat Posted November 2, 2017 Posted November 2, 2017 The SFI (flight manual for the real aircraft) says ADI alignment is done in two stages, starting immediately on main power on (or as soon as there is AC power from the generator, if ground power isn't connected). In the first stage, the gimbal arms are pre-aligned, which takes 32 seconds. The second stage starts immediately thereafter, automatically fast erecting the ADI for a maximum of 70 seconds (the minimum time is not stated). During the second stage the NAVSYST warning should be lit on the annunciator panel (or you might only get a "flag" warning on the ADI itself, unsure). None of the manuals or checklists mention having to wait for the ADI to align though so presumably it aligned fast enough in practice that you never had to wait for it. Keep in mind the Viggen's navigation system isn't really an INS - what's aligning here is just the course and vertical gyros. There is no inertial navigation in the conventional sense, although the nav system does use f.ex. course info from the ADI gyros. For the era, for what it does, for how it gets me to where I can make my run on sight/radar picture at that point, that's an awesome system. Turnaround time on Through the Inferno is literally long enough for me to plan the mission. Start on an F-16 in BMS feels like a 15-20 minute process, where the Viggen would be able to do such a higher tempo. Hell, I did three missions in about an hour, out and back and reset for the next mission repeatedly. It's amazing how geared towards operation tempo the Viggen is.
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