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Touchdown attitude Incorrect

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Hi Peter, are you saying that once my flaps are out, its not in approach idle? Besides, I would have thought even with approach idle or even flight idle selected by the EECs, the slight increase in idle thrust shouldnt change the attitude by 2 degrees. Normally for every 5kts above Vref+5, Boeing recommends reducing attitude by 1 degree for touchdown. That means with the attitude 737NGX is set at, it is doing close to 10kts faster than what it should be. Maybe abit too much lift at G550 said before. The real -800 does have an attitude of approx 4 degrees on landing and it is in approach idle which is above flight idle so i think PMDG did miss out on something when programming the attitudes. Got a fight in 2 days anyway. Will check to see if my brain is playing tricks on me or just a mistake on PMDGs behalf

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Got a fight in 2 days anyway. Will check to see if my brain is playing tricks on me or just a mistake on PMDGs behalf
You need some help with your fight in two days or can you handle it by yourself? Whistle.gif No kiddin', it would be great if you can check it out on the real thing, even though the manuals are really clear about it. Kind regards, Daniel Verhaal
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No kiddin', it would be great if you can check it out on the real thing, even though the manuals are really clear about it.
Haha, thanks Daniel but should do just fine. What manual are you guys refering to? Is it the Boeing manual meant for real pilots or the Boeing manuals for PMDG? Anyway, the attitude is approx. 5 degrees as i have said so many times before. The lastest Boeing Flight Crew Training Manual July 2011, Section 6 - Landing. pages 6.17 to pages 6.19, shows clearly the landing attitudes for the 737-800 with and without SFP options and all tables indicate attitude just above 4 degrees on landing. I didnt start this thread to be told I am wrong since i fly the aircraft for real. Just wanted to get a fix for this so that it feels like the real aircraft. Will set out doing my own tweaking thanks to some info already provided so will see how it goes. Trust me, anything like 2 to 2.5 degrees and you wouldnt want to show your face to your passengers! (i.e. at Vref +5 landing Flaps 30)

The lift_scalar adjustment in "flaps.2" is simple. [You'll need a minus figure, it's currently set to zero] However, I'm going to give PMDG a chance to correct it themselves me thinks, rather than introducing variables. If a real world 737 NGX pilot tells us the pitch on approach is a couple of degrees up, rather than the zero degrees we see, then I don't see how anyone can argue. Hopefully PMDG will refer to the "correct" section of the documnetaion and adjust accordingly. Martin Wilby

Very easily! The entry is in the aircraft cfg file. I've adjusted many aircraft this way. lift_scalar = Increase this figure to increase lift and lower nose. Decrease this figure to reduce lift and raise nose. Adjust the entry in the flaps.0 section to influence all flaps. Enter into flaps.1, flaps.2 etc, to influence the higher flap settings only. Adjusting the higher flap settings only would be preferable, so as not to influence lift from take off flap settings. However... I would say perhaps wait until PMDG have patched the product. You may find they are perfectly willing to fine tune if it is in error. Martin Wilby
I wouldn't go fiddling around with that cfg. In the real NG, flare is nearly non-existant at about 2-3 degrees. Anything more and you float down the runway. This is what PMDG simulated in the NGX, so I believe they have got it spot-on.

Matthew Bellette

Based on the comments from BraytonCycle and G550flyer, I'am going to fly approaches at Vref -5kts to get the attitude corrected in my approach & landings. This conforms to what I have in my own copy of the Boeing Flight Crew Training Manual dated October 31, 2002. Maybe in trying to fine-tune the 'flare' in the fsx enviroment, it quite possibly impacted the attitude...Just a very wild guess. However, I do wish that PMDG would comment a touch further regarding this subject to put this to bed once and for all. Praying.gif Regards,jen noulet

If you are sitting in an airliner approaching touch down at approx 145 knots Who would you like behind the yoke? A computer wiz, a arm chair pilot (when it comes to jetliners), or a real world pilot qualified and certified in that aircraft?Don,t know about you but it's a no brainer for me.

Rick Hobbs

Boeing777_Banner_Pilot.jpg

 

Sorry, in my post above, I meant to say: Maybe in trying to fine-tune the "Float" in the fsx enviroment etc...... Regards,jen noulet

]I wouldn't go fiddling around with that cfg. In the real NG, flare is nearly non-existent at about 2-3 degrees. Anything more and you float down the runway. This is what PMDG simulated in the NGX, so I believe they have got it spot-on
Forget the flare, consider pitch on approach. Your miss the point. Flare is indeed just a couple of degrees, thats not the issue. No one disputes that. The point, is that on a 3 degree glideslope, at VREF+5, the manuals say the pitch should be 2 degrees up, we all see zero degrees. it's not a huge difference, but a discrepancy all the same. And to be clear, I did say in my post, that me personally, will not be modifying the cfg at this stage. However, with further evidence, from the manuals, and real world pilots, and if our opinions are shown to be valid, I may well if it's not addressed in a patch. Martin Wilby

Maybe the PMDG team were concentrating more on getting the proper 'Float' and overlooked the landing 'Attitude'....Just my own humble opinion. I too would like to see it corrected to the Boeing FCTM landing flare profile for the -800. This topic seems to be never-ending with very little response or inputs from the PMDG team. Regards,jen noulet

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