bpcw001 28 Posted September 28, 2014 Share Posted September 28, 2014 Hi, on autoflight (managed or selected, doesn't matter), when capturing the selected level/altitude, the aircraft "bounces" up when the altitude is captured with a V/S lower than 1000fpm. Example: You're climbing at 800fpm. When then altitude reaches the range were the FMA announces the capture of the target alt, the aircraft will violently pull up to a V/S equal or greater than 1000fpm first before settling for a lower V/S to finally capture the target alt. If the climb speed is >= 1000fpm right away, this effect is not there. I run Hotfix 1.01c. Any ideas? I thought I read somewhere that this problem was supposed to be fixed. Thanks Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted September 28, 2014 Aerosoft Share Posted September 28, 2014 In what model is that? Link to comment Share on other sites More sharing options...
bpcw001 28 Posted September 28, 2014 Author Share Posted September 28, 2014 Hi, I experienced this in the A319 CFM model. I just checked with the IAE A319 and it does not happen there. No big deal though. Thanks Link to comment Share on other sites More sharing options...
bpcw001 28 Posted October 1, 2014 Author Share Posted October 1, 2014 Reinstalled and the problem is gone, both with CFM and IAE models. Classical screwup on my side. Consider case closed. Link to comment Share on other sites More sharing options...
bpcw001 28 Posted October 1, 2014 Author Share Posted October 1, 2014 Ah, I was speaking too soon! I just experienced it with the A319 CFM model in managed climb to FL370. Aircraft was climbing at 800fpm when during capturing it bounced up to 1300fpm only to slowly roll back V/S to level off at FL370. Sorry, but this doesn't seem to be solved yet. Never had this with the IAE model. Hope this is still being read despite the thread being marked as answered. Thanks Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted October 2, 2014 Aerosoft Share Posted October 2, 2014 What weather tool is used? Link to comment Share on other sites More sharing options...
Airbus339 129 Posted October 2, 2014 Share Posted October 2, 2014 It's a problem also had the old AXE: when you're levelling off at low V/S (around or less than 1000ft/min) the aircraft rapidly increases its V/S up to 1700ft/min to capture the ALT set on the FCU. Weather or not, in my case it's the same Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted October 2, 2014 Aerosoft Share Posted October 2, 2014 But the code for the A318/A319 is totally new. Let's see if the changes to the CFM planned make a difference. So far I cannot confirm this behavior and the report from bpcw001 seem to stand on it's own. Link to comment Share on other sites More sharing options...
bpcw001 28 Posted October 6, 2014 Author Share Posted October 6, 2014 Well, I did some more flying. After hotfix 1.02 I get this behavior with CFM and IAE A319 models. It *only* happens when in managed climb. Please try the following: Set up a heavily loaded aircraft and let it climb in fully managed mode to a high flight level, so that before capturing the target level, it will only climb at a V/S < 1000fpm. I noticed that when the capturing kicks in, the aircraft bounces up to 1500fpm to then finally settle for lower V/S to finish capturing the target level. I can get this effect consistently. My weather program is Active Sky Next. Selected climb with dialed-in V/S does not yield this behavior, and that's what I use to mitigate this effect for passengers :-) Open Climb I haven't tried yet. Thanks Link to comment Share on other sites More sharing options...
bpcw001 28 Posted October 10, 2014 Author Share Posted October 10, 2014 Anybody been able to reproduce this in the meantime? It also happens with the latest ASN SP1. Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted October 10, 2014 Aerosoft Share Posted October 10, 2014 Anybody been able to reproduce this in the meantime? It also happens with the latest ASN SP1. And without ASN? Link to comment Share on other sites More sharing options...
bpcw001 28 Posted October 15, 2014 Author Share Posted October 15, 2014 And without ASN? Will try and report back Link to comment Share on other sites More sharing options...
bpcw001 28 Posted October 15, 2014 Author Share Posted October 15, 2014 So, yes, it also happens when ASN is *not* running (nor any other weather program, just FSX). But the following detail might be interesting for recreating the situation: I had the cruise level set up as FL360 in the MCDU. During managed climb, I put FL340 in the FCU and let it level there. The bounce did *not* happen. When turning in FL360 in the FCU and pushing the button for managed climb, it would climb to the MCDU-set cruise alt (FL360) and there it did bounce before leveling off! It appears that the bounce only happens when finally leveling off at the cruise level set in the MCDU. Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted October 16, 2014 Aerosoft Share Posted October 16, 2014 Can you try that with SP1? Link to comment Share on other sites More sharing options...
bpcw001 28 Posted October 16, 2014 Author Share Posted October 16, 2014 Just tried with a freshly installed 1.1 version, installed according to the official upgrade guide. Issue is still present. No weather program used, just FSX. Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted October 17, 2014 Aerosoft Share Posted October 17, 2014 Okay, are there other users who seen the same? Link to comment Share on other sites More sharing options...
Mladen 55 Posted October 17, 2014 Share Posted October 17, 2014 Installed v1.10 today and made a flight LIRN - LGKF. Climbing to FL370 RoC above FL340 was 900-1000 fpm. At arround FL365 RoC increased quickly to 1500+ fpm and then slowly reduced until FL370 was reached. This was happening randomly with previous version, but not in every flight. Using ASN SP1. Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted October 17, 2014 Aerosoft Share Posted October 17, 2014 But that's not the same issue. Please try to stay on topic people otherwise it is really hard to keep track of issues. Link to comment Share on other sites More sharing options...
fanblade 11 Posted October 17, 2014 Share Posted October 17, 2014 Hello Mathijs, I can confer that I have seen this behaviour today as well. Airbus 319 CFM climbing to 34k gets to about 33.5k then the climb rate shoots up to 1700fpm to settle the cruise height. This issue was also present in the AXE . Bus v1.10 was installed as per the instructions given, and on a clean FSX install, happen with/without weather engine have got both ASN/Opus. Regards Link to comment Share on other sites More sharing options...
bpcw001 28 Posted October 17, 2014 Author Share Posted October 17, 2014 Hello Mathijs, I can confer that I have seen this behaviour today as well. Airbus 319 CFM climbing to 34k gets to about 33.5k then the climb rate shoots up to 1700fpm to settle the cruise height. This issue was also present in the AXE . Bus v1.10 was installed as per the instructions given, and on a clean FSX install, happen with/without weather engine have got both ASN/Opus. Regards Yeah, 1700fpm is the number I get too. It doesn't do this when the climb is with a V/S > 1700fpm anyway, but when lower (all managed mode), it shoots up to 1700fpm before settling. Link to comment Share on other sites More sharing options...
bpcw001 28 Posted October 22, 2014 Author Share Posted October 22, 2014 On my system, Hotfix 1.12 does not solve the issue. Link to comment Share on other sites More sharing options...
bpcw001 28 Posted November 3, 2014 Author Share Posted November 3, 2014 Not resolved with 1.12c either. Still the "1700fpm-bounce" on ALT capture. Link to comment Share on other sites More sharing options...
bsal 38 Posted November 3, 2014 Share Posted November 3, 2014 I can confirm the same issue, both IAE and CFM aircraft pitch up ~300ft before the cruise altitude is reached, Im using FSGRW for weather. Link to comment Share on other sites More sharing options...
Guest Posted November 3, 2014 Share Posted November 3, 2014 Not solved here, too. Best. Miquel. Link to comment Share on other sites More sharing options...
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