Hpinter 1 Posted August 5, 2017 Share Posted August 5, 2017 Hi guys, first of all I would say thank you to the team for a great airplane. I have in my flights a problem to hold the altitude it decrease the verticalspeed when I have set a FL for example FL100. The it is changes between FL95 and FL109. This happens when I increase or decrease the speed an when i do turns. The variation is then up to 1000 feet per minute. May you can help me to solve the problem? Best regards hpinter Link to comment Share on other sites More sharing options...
Hans Hartmann [OLD] 1419 Posted August 5, 2017 Share Posted August 5, 2017 When the aircraft does this pitch-up/pitch-down thing, it's most likely that it's overloaded or that the center of gravity is outside its limits. Try to change the payload to be distributed more evenly. Link to comment Share on other sites More sharing options...
Hpinter 1 Posted August 5, 2017 Author Share Posted August 5, 2017 Ok I will try it :).. Thx Link to comment Share on other sites More sharing options...
Hpinter 1 Posted August 6, 2017 Author Share Posted August 6, 2017 Sorry it still overshoot in the Alt with speed increase and turns. Link to comment Share on other sites More sharing options...
Hans Hartmann [OLD] 1419 Posted August 6, 2017 Share Posted August 6, 2017 Of course it deviates a bit. Additional thrust turns into additional lift, turns cause a loss of lift. The change has to occur first before it can be corrected. And you see the result of that as an altitude deviation. Link to comment Share on other sites More sharing options...
Hpinter 1 Posted August 6, 2017 Author Share Posted August 6, 2017 Sure you are right, but the deviation is sometimes 1500 feet per miunte. The altitude increase round about 500 feet above or below the ALT in the Autopilot Link to comment Share on other sites More sharing options...
Hans Hartmann [OLD] 1419 Posted August 6, 2017 Share Posted August 6, 2017 I just tried and got a deviation of less than 5 feet when I flew a turn with HDG HOLD at full bank angle at FL100. If it's 500 feet, then something else is wrong. Can you save the flight where this happens to you and upload it here? (.fxml, .wx and .crj file please. To be found under <Documents>\Prepar3d v4 Files or similar if another sim). Link to comment Share on other sites More sharing options...
Hpinter 1 Posted August 6, 2017 Author Share Posted August 6, 2017 I will pefrom another flight so and try it again. Thx for your help. Link to comment Share on other sites More sharing options...
Hpinter 1 Posted August 8, 2017 Author Share Posted August 8, 2017 Hi, I still have the problem. These are the files :(. Gruß hpinter EDDMLSZHCRJ900.crj EDDMLSZHCRJ900.FLT EDDMLSZHCRJ900.WX Link to comment Share on other sites More sharing options...
Hpinter 1 Posted August 11, 2017 Author Share Posted August 11, 2017 Hi, are you already able to take a look on the files? Best regards hpinter Link to comment Share on other sites More sharing options...
Hans Hartmann [OLD] 1419 Posted August 11, 2017 Share Posted August 11, 2017 Yes, I did. But with that little weight, it's hardly a CoG issue. I'm going to discuss with this Alexander (flight dynamics). May be he has an idea. Link to comment Share on other sites More sharing options...
Hpinter 1 Posted August 11, 2017 Author Share Posted August 11, 2017 But in real it also works. Thx for help. I hope you can find a solutuion. Link to comment Share on other sites More sharing options...
Hpinter 1 Posted August 11, 2017 Author Share Posted August 11, 2017 Is the weight really low? Link to comment Share on other sites More sharing options...
Hpinter 1 Posted August 19, 2017 Author Share Posted August 19, 2017 hey guys, I have done several flights with the CRJ. The hold of the altitude is every flight heavy weight or light weight. I have diffenrent times turbulent weather, but in my opinon this can not cause so much variation. It still the situation, that when a assigned Alitude the vertical speed increase the descend rate to -2000 ft/min. What do i wrong????? Best regards hpinter Link to comment Share on other sites More sharing options...
Hpinter 1 Posted August 31, 2017 Author Share Posted August 31, 2017 On 11.8.2017 at 08:43, Hans Hartmann sagte: Yes, I did. But with that little weight, it's hardly a CoG issue. I'm going to discuss with this Alexander (flight dynamics). May be he has an idea. But what shows this files I sent in this Topic? I do not understand, why this depends on the low weight. I can send you some Photos about the Situiation??? Link to comment Share on other sites More sharing options...
Developer metzgergva 210 Posted August 31, 2017 Developer Share Posted August 31, 2017 With very low weight the CoG is very much rearward and the trim may run against its most nose down position. Check in the LM if your CoG is within limits. Link to comment Share on other sites More sharing options...
Hpinter 1 Posted August 31, 2017 Author Share Posted August 31, 2017 it was at 28.7 Link to comment Share on other sites More sharing options...
Developer metzgergva 210 Posted August 31, 2017 Developer Share Posted August 31, 2017 That should be fine. I will check with your files tonight. Link to comment Share on other sites More sharing options...
Hpinter 1 Posted August 31, 2017 Author Share Posted August 31, 2017 that would be great Link to comment Share on other sites More sharing options...
Hans Hartmann [OLD] 1419 Posted August 31, 2017 Share Posted August 31, 2017 2 hours ago, Hpinter said: that would be great Please also try version 1.0.1 which is available now. Alexander made some changes in the flight dynamics. May be it affects how the altitude hold works for you. Link to comment Share on other sites More sharing options...
Hpinter 1 Posted August 31, 2017 Author Share Posted August 31, 2017 sounds good thx Link to comment Share on other sites More sharing options...
Developer metzgergva 210 Posted August 31, 2017 Developer Share Posted August 31, 2017 I have loaded the provided files and that puts me on ground in LSZH. So I took off from there and flew direction EDDM in FL100 which was straight through thunderstorms. I think you must use a weather program which may set turbulence by default too high, like AktiveSky does, to see such altitude variations you described. Nothing I can do about this if that is the case. Link to comment Share on other sites More sharing options...
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