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pkofman

airbus 330 and 340, Really long take off runs

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Hi allI thought I posted this question but I cant find it so Im repostingI find that when I fly the airbus, the 330 in particular , that it takes forever to get off the runwayI set everything up per the book in the mdcu ( I think!), and flaps to 1+f and Take off is confirmed Normal. Power set to flxBut the "TO inhibit" light is on and it takes forever to get off the ground. I read in the forum that it is due to trim errors, but I corrected that and it did not work for me. I just keep driving down the runway when in fact I would rather fly off the runway .Thoughts, PeterPeter K P.EngCF-MMZToronto Ontario CanadaPMDG 747,737and 747FLevel D 767PSS Airbus pro A340-300In reality, a Mooney 201 Pilot

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Guest vrandar

The TO Inhibit message should be on, it means that warnings you don't need and that would be a distraction are inhibited until after takeoff.Where are you taking off from and what is your ZFW and block fuel? It could be that you are very heavy at a high altitude airport. If you adjust your weights in the Fuel and Payload section of FS and make some big changes from what is there already it would be a good idea to save and reload that aircraft. The reason is that the weights in the aircraft.cfg file are not updated dynamically. You might also wish to adjust the pitch trim to something like -1.8UP or -2.0UP. Call up the F/CTRL page on the lower ECAM and using your End and Home keys adjust the pitch trim (shown in the middle of the lower ECAM).I also recommend that if you haven't got them already you get the Bob Scott revised flight dynamics for the A330/A340 from the User Edits area of the PSS website.The A340 does actually take a ong time to takeoff in the real world - rather underpowered!Rob Elliott, EGPE InvernessPSS Airbus Support andAirbus Fleet Training Captain, British Airways Virtual airbus@speedbirdonline.co.ukhttp://www.speedbirdonline.co.uk/airbus.htmlhttp://www.bavirtual.co.uk

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Guest fyrestrtr

>The A340 does actually take a ong time to takeoff in the real>world - rather underpowered!Boeing pilots joke that its the only jet that can suffer a rear bird strike.

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>>The A340 does actually take a ong time to takeoff in the>real>>world - rather underpowered!>>Boeing pilots joke that its the only jet that can suffer a>rear bird strike.Thats funny, And I thought it was just me, Glad you saved me from reading the manual again! Is that also true of the 330. A few posts ago in this thread a suggestion was to change the flight dynamics per the user edits on the pss siteDo you know if that change makes the aircraft more or less realistic.?Thanks for the humor.Pete

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>The revised flight dynamics by Bob Scott make things much>better and more realistic, not least in terms of the attitude>on approach and landing. Definitely recommended.I tried them and I find now with the 340 that the aircraft comes off the runway nicely , ( pitch adjusted with trim ). But I find the aircraft way more sensitive to stalls . ( bank angle and angle of attack) Is that possible or maybe the dynamics are just more sensitive.?Thanks for the advice.Peter>>Rob Elliott, EGPE Inverness>PSS Airbus Support and>Airbus Fleet Training Captain, British Airways Virtual >airbus@speedbirdonline.co.uk>http://www.speedbirdonline.co.uk/airbus.html>http://www.bavirtual.co.uk

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Guest vrandar

A couple of comments here: if you have too much pitch trim you will find that on takeoff the speed will drop back. What you want to do is to find the right amount of pitch trim to keep the aircraft around the V2+10 mark (shown as the magenta triangle on the speed tape).You must pay close attention to V2+10. On take off you mustn't shoot through it to a faster speed. If you do, as soon as you engage autopilot the computers will command a sharp pitch up to bring the speed back to V2+10. If you have gone way beyond it the best thing to do is to fly the SID manually until you have passed the acceleration altitude and then engage a/p.Rob Elliott, EGPE InvernessPSS Airbus Support andAirbus Fleet Training Captain, British Airways Virtual airbus@speedbirdonline.co.ukhttp://www.speedbirdonline.co.uk/airbus.htmlhttp://www.bavirtual.co.uk

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>A couple of comments here: if you have too much pitch trim>you will find that on takeoff the speed will drop back. What>you want to do is to find the right amount of pitch trim to>keep the aircraft around the V2+10 mark (shown as the magenta>triangle on the speed tape).>>You must pay close attention to V2+10. On take off you mustn't>shoot through it to a faster speed. If you do, as soon as you>engage autopilot the computers will command a sharp pitch up>to bring the speed back to V2+10. If you have gone way beyond>it the best thing to do is to fly the SID manually until you>have passed the acceleration altitude and then engage a/p.>>Rob Elliott, EGPE Inverness>PSS Airbus Support and>Airbus Fleet Training Captain, British Airways Virtual >airbus@speedbirdonline.co.uk>http://www.speedbirdonline.co.uk/airbus.html>http://www.bavirtual.co.ukThanks that makes allot of sense, It is exactly what was happening. If I want to know the v2 should I suppose I can use the v2 calculated in the v2= in the mdcu and add ten and then enter that manually or just make sure the dot is showing, let the plane have control from takeoff and use the flx power setting.Thanks....PeterPeter K P.EngCF-MMZToronto Ontario CanadaPMDG 747,737and 747FLevel D 767PSS Airbus pro A340-300In reality, a Mooney 201 Pilot

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Guest vrandar

Yes you have the V2 speed from the PERF page of the MCDU. The V2+10 is shown for you as a triangle in magenta on the speed tape of the PFD. But to make sure the correct speeds are shown on your PFD, including V2+10, you should left click (press) the speed knob on the glareshield after you have set your vspeeds in the MCDU. The speed window will then show ---.In the first image below, V2 is set in the PERF page of the MCDU. The speed knob is then left clicked giving the V2+10 speed over on the speed tape of the PFD.http://forums.avsim.net/user_files/165760.jpgI had set a pitch trim of -1.6UP so there wasn't too much to play with before a stall warning would kick in. You can see the magenta triangle on the speed tape showing V2+10 which is your target.http://forums.avsim.net/user_files/165761.jpgRob Elliott, EGPE InvernessPSS Airbus Support andAirbus Fleet Training Captain, British Airways Virtual airbus@speedbirdonline.co.ukhttp://www.speedbirdonline.co.uk/airbus.htmlhttp://www.bavirtual.co.uk

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>Yes you have the V2 speed from the PERF page of the MCDU. The>V2+10 is shown for you as a triangle in magenta on the speed>tape of the PFD. But to make sure the correct speeds are shown>on your PFD, including V2+10, you should left click (press)>the speed knob on the glareshield after you have set your>vspeeds in the MCDU. The speed window will then show ---.>>In the first image below, V2 is set in the PERF page of the>MCDU. The speed knob is then left clicked giving the V2+10>speed over on the speed tape of the PFD.>http://forums.avsim.net/user_files/165760.jpg>>I had set a pitch trim of -1.6UP so there wasn't too much to>play with before a stall warning would kick in. You can see>the magenta triangle on the speed tape showing V2+10 which is>your target.>http://forums.avsim.net/user_files/165761.jpgThanks , Ill try it, Peter>>Rob Elliott, EGPE Inverness>PSS Airbus Support and>Airbus Fleet Training Captain, British Airways Virtual >airbus@speedbirdonline.co.uk>http://www.speedbirdonline.co.uk/airbus.html>http://www.bavirtual.co.uk>>>>Peter K P.EngCF-MMZToronto Ontario CanadaPMDG 747,737and 747FLevel D 767PSS Airbus pro A340-300In reality, a Mooney 201 Pilot

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As part of your problem, I think the MCDU-calculated V speeds are too high. Try using TPC (http://www.fsip200x.com/tpc.htm) to calculate your V speeds and enter them manually in the MCDU. A VR of 173 is really high - you could be climbing out at that speed! My two cents...Alden

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Guest vrandar

I was the one with the Vr of 173 in that particular A340-300 flight and screenshot and I have no problems whatsoever with the Airbus. The climbout is at 183 = V2+10. It is Peter who is reporting problems and he hasn't said what his VR is. For an A340 a Vr of 150-173 at a moderate weight is quite normal. 173 is on the high side but not unusual.I don't really like TPC as the developer, despite being told, did not take into account the flex programming error by PSS which necessitates a minus figure in the flex temp.Rob Elliott, EGPE InvernessPSS Airbus Support andAirbus Fleet Training Captain, British Airways Virtual airbus@speedbirdonline.co.ukhttp://www.speedbirdonline.co.uk/airbus.htmlhttp://www.bavirtual.co.uk

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Guys, I am away from home for a week so I will respond when im back. But thanks for the info. Regards Peter>I was the one with the Vr of 173 in that particular>A340-300 flight and screenshot and I have no problems>whatsoever with the Airbus. The climbout is at 183 = V2+10. It>is Peter who is reporting problems and he hasn't said what his>VR is. >>For an A340 a Vr of 150-173 at a moderate weight is quite>normal. 173 is on the high side but not unusual.>>I don't really like TPC as the developer, despite being told,>did not take into account the flex programming error by PSS>which necessitates a minus figure in the flex temp.>>Rob Elliott, EGPE Inverness>PSS Airbus Support and>Airbus Fleet Training Captain, British Airways Virtual >airbus@speedbirdonline.co.uk>http://www.speedbirdonline.co.uk/airbus.html>http://www.bavirtual.co.uk

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Guest skytrain

>I also recommend that if you haven't got them already you get the Bob Scott revised flight dynamics for the A330/A340 from the User Edits area of the PSS website.Where else can I get these as I am suffering from the same problem of sluggish take offs, 90% oevershooting the RWY. The link from the PSS site reports that the file no longer exists. Can anybody who knows where to get it please help me or can someone who has it email it to me please! Seetella

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