matchball 5 Posted November 20, 2014 Share Posted November 20, 2014 Hello AS. I have had the A318/A319 and A320/A321 since the release. But just suddenly couple days ago I started to have this extremely annoying problem. At the final approach phase, when the SPEED mode is active the thrust swings up and down. This causes the failure of the FMGS to maintain the VAPP and it goes too low. Taking the thrust to manual control it still looks very wrong and weird. So to demonstrate, I did a quick video for you. Here is the link: http://youtu.be/ktduzyst3EU I have fully reinstalled both A319 and A321 and also deleted any existing folders of the Airbus and still no luck. Any suggestions? Kind Regards, Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted November 22, 2014 Aerosoft Share Posted November 22, 2014 If this happens only recently it must mean something has changed. My guess is that your weather has very sharply defined winds. Many add-on weather tools tend to make those. Link to comment Share on other sites More sharing options...
Joshua Che. 1601 Posted November 22, 2014 Share Posted November 22, 2014 also what is your FPS? Link to comment Share on other sites More sharing options...
Christian Wopp 172 Posted November 23, 2014 Share Posted November 23, 2014 I'm experiencing this issue when the airbus is reaching its cruise altitude. Is this already known? Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted November 24, 2014 Aerosoft Share Posted November 24, 2014 Unless we get some feedback as asked there is nothing we can do.. Link to comment Share on other sites More sharing options...
Skyrideruk 4 Posted November 24, 2014 Share Posted November 24, 2014 I think I have the same issue as Christian Wopp: for example, when the aircraft levels off at FL200, the thrust fluctuates up & down quite dramatically, taking several seconds before it settles down at the required cruise setting. During this time, the aircraft maintains airspeed & there is a gentle reduction of vertical speed as the aircraft levels: it is only the thrust that is unstable. Link to comment Share on other sites More sharing options...
hajoge 0 Posted November 24, 2014 Share Posted November 24, 2014 I have the same issue as both members above: normal fsx install, no weather-add on or the like, installed version 1.1 of Airbus 320/321. When reaching top of climb, the thrust swings for several seconds quite heavily and then settles down to expected level. Just to add: aside from this a very happy customer, enjoying the product, great job Aerosoft team. Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted November 24, 2014 Aerosoft Share Posted November 24, 2014 What is the frame-rate in these conditions? Link to comment Share on other sites More sharing options...
Skyrideruk 4 Posted November 24, 2014 Share Posted November 24, 2014 I'm getting around 20FPS, which is my target frame rate. Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted November 24, 2014 Aerosoft Share Posted November 24, 2014 Okay that should be not an issue then. We'll try to recreate it to so if their is a reason for that behavior. Link to comment Share on other sites More sharing options...
Skyrideruk 4 Posted November 24, 2014 Share Posted November 24, 2014 Roger that. FYI: it does not seem to be an issue at relatively low levels, such as when complying with altitude constraints when following a SID. But it is definitely an issue at FL200 for me. (I have not tried every level!) Link to comment Share on other sites More sharing options...
Christian Wopp 172 Posted November 25, 2014 Share Posted November 25, 2014 I have 30 pictures per second during the level off. Link to comment Share on other sites More sharing options...
Cheyenne Chief Pilot 829 Posted November 25, 2014 Share Posted November 25, 2014 Replicated for the altitude capture phase (ALT*) in our internal builds with clear weather (no wind/no turbulence) and high frame rates. Thanks for your reports, folks! EDIT: Under the same conditions (no/clear weather) I canNOT replicate this issue for the approach phase. As a test, could you pls. try your approaches with all weather cleared out from the sim? Thanks! Link to comment Share on other sites More sharing options...
Skyrideruk 4 Posted November 25, 2014 Share Posted November 25, 2014 I don't have the issue on departure or arrival, only at higher levels en-route. However, I couldn't say at precisely what level it starts to appear. Link to comment Share on other sites More sharing options...
Skyrideruk 4 Posted December 22, 2014 Share Posted December 22, 2014 Hmm, since installing version 1.21, the behaviour has changed but is still performing in an undesirable manner: Now, when levelling off at altitude, the IAS increases to approx. 10 kts above target speed, following which there is a major thrust reduction until speed reduces to target & then thrust stabilises at the appropriate cruise setting. However, I am now getting thrust instability when levelling off at lower altitudes (e.g. during a SID) which did not occur before: very large a & rapid decreases/increases in thrust, taking several cycles before stabilising at something sensible. Link to comment Share on other sites More sharing options...
Airborne54 3 Posted December 29, 2014 Share Posted December 29, 2014 Same behavior with my Version 1.2.1. A319 not Level off correctly. Thrust swings up and down, as reported by Skyrideruk and Christian. Without taking a hand manually, the aircraft is climbing and climbing. Manual control works out finally, but it was not easy and feels somehow out of control. (OK, I'm a new Airbus Pilot ) After manually stabilizing at FL310 the managed mode operates again. Desending and landing works like a charm. best regards Bernhard Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted December 29, 2014 Aerosoft Share Posted December 29, 2014 I just done a few test on a 100% clean FSX (and FSX Steam). The only edit was the high mem tweak. I could see a little bit of an effect like you describe and discussed it with one of the real pilots in our team. He also had noticed it and did not find it incorrect as the real aircraft also does not do that 100% smoothly. We will continue to monitor this effect. Link to comment Share on other sites More sharing options...
Skyrideruk 4 Posted January 3, 2015 Share Posted January 3, 2015 If you have not already done so, can I suggest that you view the behaviour when levelling off at, say, 5,000', speed 250 kts, in managed climb mode, typical of flying an SID? This behaviour was not there before the latest update & is very unlike the real aircraft. Link to comment Share on other sites More sharing options...
Aerosoft Aerosoft Team [Inactive Account] 51558 Posted January 4, 2015 Aerosoft Share Posted January 4, 2015 I do see some adjusting but it's all not unlike we expect. And most certainly it is not worse then the 1.00 release on my clean systems. Link to comment Share on other sites More sharing options...
Mladen 55 Posted January 4, 2015 Share Posted January 4, 2015 If you have not already done so, can I suggest that you view the behaviour when levelling off at, say, 5,000', speed 250 kts, in managed climb mode, typical of flying an SID? This behaviour was not there before the latest update & is very unlike the real aircraft. I can confirm this behaviour and totally agree with you Link to comment Share on other sites More sharing options...
phastings 0 Posted January 5, 2015 Share Posted January 5, 2015 If you have not already done so, can I suggest that you view the behaviour when levelling off at, say, 5,000', speed 250 kts, in managed climb mode, typical of flying an SID? This behaviour was not there before the latest update & is very unlike the real aircraft. Is this the same effect as can be seen in Cobolman's video about flying a custom route from Gatwick to Manchester? On the SID out of Gatwick, there are two step climbs of 1,000'. In managed mode, the engines spool up (and then back down) three times during both of the short climbs (at 23:15 and 29:30 in the video). The aircraft doesn't overshoot the new height constraints, but my feeling is that real life behaviour is smoother and the engine power doesn't rise and fall like that. Link to comment Share on other sites More sharing options...
Skyrideruk 4 Posted January 5, 2015 Share Posted January 5, 2015 Not seen the video, so can't say. You are correct in saying that the engine power does not rise & fall like that: in managed climb mode, for 'small' level changes, you should get reduced climb power, in order to maintain target speed with a sensible ROC. I can't remember the exact figures, but it's something like this: for changes of 1000'/2000', you will get a rate of climb of maybe 1000/2000 FPM. Whatever it should be, something has changed since the original release, since the original release did not behave like this. Link to comment Share on other sites More sharing options...
Skyrideruk 4 Posted January 12, 2015 Share Posted January 12, 2015 Just installed Hotfix 1.21B: The aircraft is now much better at maintaining target speed (well done!), but the thrust is still very unstable, with much cycling (increase/decrease) as before, with associated oscillation in pitch. Link to comment Share on other sites More sharing options...
Ricardo Schor 0 Posted January 12, 2015 Share Posted January 12, 2015 I started to have the alluded thrust instabilty after installing the Hotfix 1.21B. It is more accentuated in the A319 than in the A320. Link to comment Share on other sites More sharing options...
Skyrideruk 4 Posted January 12, 2015 Share Posted January 12, 2015 It's the same with Hotfix 1.21C Link to comment Share on other sites More sharing options...
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