First im really enjoying doing the lessons that come with FS2004 the feeling when you nail your first landing brilliant, Just 2 things that im strugling with the first is the trim, i think i understand the principle behind it if you set it up correctly then its like someone else having hold of the joystick9 but its centred)? I dunno if im been a bit heavy handed when im setting it in FS but i seem either to clim or decend i cant like make it stop at a constant rate, is there anything im doing wrong? Also is it the VOR Panel again after doing the tutorial I still dont really understand this, do you know of any other tutorials or could some one explane it in a different way to me.Thanks

I'm glad you are enjoying the lessons!"the first is the trim, i think i understand the principle behind it if you set it up correctly then its like someone else having hold of the joystick9 but its centred)?"The trim does just that, it relieves the pressure on the controls.http://forums.avsim.net/user_files/151242.jpgThe control position image is just a way to show the pressure you need to apply to the control to maintain the elevator position. The greater the gap, the more pressure required.Basically, the air flow hits the trim tab forcing it down, in turn pushing the back of the elevator down. It works like the aileron. When the aileron is deflected up, it pushes the wing down."I dunno if im been a bit heavy handed when im setting it in FS but i seem either to clim or decend i cant like make it stop at a constant rate, is there anything im doing wrong? "I made a reply to another post in how to trim for straight and level flight.http://forums.avsim.net/dcboard.php?az=sho...=2470&mode=full"Also is it the VOR Panel again after doing the tutorial I still dont really understand this, do you know of any other tutorials or could some one explane it in a different way to me."Sorry, I'm not sure I understand what you are asking...

Have a great Day/Night where ever you are! :-wave

http://www.3dflite.com/dac/img/BANNER-soccer.gif Student Pilot - YSBKC152/Tomahawk/Warrior/Archer/Duchess66.3 hrs Total

>Also is it the VOR Panel again after doing the tutorial I>still dont really understand this, do you know of any other>tutorials or could some one explane it in a different way to>me.>Thanks Hi,here it is a VOR simulator:http://www.visi.com/~mim/nav/Marco

>>the first is the trim, i think i understand the principle>behind it if you set it up correctly then its like someone>else having hold of the joystick9>Also is it the VOR Panel again after doing the tutorial I>still dont really understand this, do you know of any other>tutorials or could some one explane it in a different way to>me.>ThanksGlad you're enjoying FS2004. The trim, as was said, is just to relieve back pressure on the control yoke. When a plane is trimmed properly it will retain it's current attitude, briefly, when the yoke is let go. A properly trimmed aircraft won't fly itself but it requires minimal control input to keep it going. In practice anytime you make a change in the aircraft's attitude you would retrim it to hold that attitude. Make small corrections to the trim once you are close. If you are trimming for straight and level, then manually put the aircraft in the proper attitude the let go of the yoke. If it doesn't stay level return the plane to level flight and make a small adustment to the trim and do it over again. You are actually trimming the aircraft to maintain a set speed so if you have some throttle left and have the trim close you may be able to get it right with a little bit of throttle.I don't know what you mean by the VOR stack. The radio stack has both your COM and NAv radios. VOR is an older radio navigation system that is being used less for cross country travel due to the advent of GPS but is still used for instument approaches to airports and to locate holding patterns.If you can put your question more specifically, I'll try to answer it.

What you have figured out intutively about Trim, is right on the money.VOR etc...Its all explained herehttp://stoenworks.com/How%20to%20Fly%20Flight%20Sims.htmlhttp://www.navfltsm.addr.com/ils.htmManny

Great thread, and elche's diagrams are terrific. One thing the original poster might consider too is to go to the keyboard section and adjust the repeat value for the trim buttons. By default, it is set at 2X or whatever. I pull it back a notch. Thus changes in trim are smaller with each press. More precise.While we are on the subject, I've often wondere about takeoff trim. in general the purpose of trim is to relieve yoke pressure, but take off trim functions differently. Most of the aircraft I fly require it preset and the B200 won't even get off the runway without 6-7 degrees trim set. I originally thought that setting the trim before takeoff was done in anticipation of the control pressures that would be in effect at initial climb. But I now think instead that the setting calbrates, in effect, the elevator authority possible at rotation and lift off. Does anyone here have a good exlanantion of what take off trim is doing?

Hi CowlFlapsOpen,The trim doesn't affect the authority it just relieves pressure. If you take a look at a B747, B737 or any other airliner in FS you will see that it doesn't have trim tabs. When setting the trim on these planes you are simply changing the angle of tailplane.Edit: I just had a look at the tailplane of a 747, and noticed the elevator is split in two. Anyone know how this works? Also whould like to ammend what I've stated above. By adjusting the angle of the tailplane, the effectiveness of the elevator is affected.The Tomahawk has a spring-loaded trim instead of the trim tab. The spring is tied to the yoke. When you adjust the trim wheel it adjust the tension on the spring, which in turn moves the Yoke back/forward (you can see the yoke move inside the plane, and you can feel the tension on the wheel as you reach max pitch up/down setting).Elevator Authority on small GA aircraft usually happens at around 35-40kts, higher for T-tail aircraft, so by the time you reach rotation speed you have more than enough elevator authority.In real life, I find that the C152 is the only plane that will climb on its own with trim at T/O position. The Duchess, Archer, Warrior and Tomahawk usually needs a few spins of the wheel down from T/O setting to climb unaided.If you need so much trim to T/O on the B200, you might be a little nose heavy. Try and adjust your weight and balance.Hope that helps :D

Have a great Day/Night where ever you are! :-wave

http://www.3dflite.com/dac/img/BANNER-soccer.gif Student Pilot - YSBKC152/Tomahawk/Warrior/Archer/Duchess66.3 hrs Total

>Great thread, and elche's diagrams are terrific. One thing>the original poster might consider too is to go to the>keyboard section and adjust the repeat value for the trim>buttons. By default, it is set at 2X or whatever. I pull it>back a notch. Thus changes in trim are smaller with each>press. More precise.>Ack!! All these years of FS and I didn't know that. Good info.Could be v. helpful.Rhett

For a quick VOR lesson think of it this way.A) Tune into the VOR via the NAV radio:( Set the cobearing on the compass you want to interceptLook at the compass rose and imagine a line from or to your plane from that heading on the VOR. The needle will tell you if you are left or right of the bearing.

>I just had a look at the tailplane of>a 747, and noticed the elevator is split in two. Anyone know>how this works?Hi Diego,usually on heavies rudders, elevators and ailerons are split in more than one part, and each part is connected to a different hydraulic system. This way, in the event of one or multiple hydraulic failures, some control authority is retained for each of the 3 axis.Marco

Hey guys. RE: the B200, the issue is not weight and balance. The POH insists on this trim schedule at takeoff and the model appropriately refuses to lift off unless it is set, even with a perfect CG and weight. As for take off trim, what confuses me is that if the purpose is to relieve pressure, why must it be set at line up and T/O. There is no back pressure until rotation. Is it to assist with the pilots ability to generate enough back pressure on the yoke sufficently to rotate and lift off? Do you see what i mean? -jeff

" Is it to assist with the pilots ability to generate enough back pressure on the yoke sufficently to rotate and lift off? "Yes, and this also has to do with the weight and balance. Say you load your B200 to its maximum forward limit. The aircraft is going to be nose heavy, and would require alot of back pressure to rotate. To reduce this pressure you give it some positive trim.I'm taking a guess here... but I think the reason the B200 won't rotate unless trimmed for T/O, is because the author has tried to simulate the pressure a pilot would feel on the controls. I read another post on trim where a CRJ pilot had purposely taken-off with an incorrect trim setting. He said that this wasn't putting his aircraft in any danger, but because of the pressure required to maintain climb attitude, it was a real pain to get into the air.When I'm in the circuit doing TnG's with the Archer, on the approach I like to trim so that I need to maintain a little back pressure on the control which for me helps on the flare. Once I take-off again I usually don't trim until I'm on climb. As I rotate and settle in to my climb speed and attitude I need a fair amount of back pressure because the trim is not on T/O config.

Have a great Day/Night where ever you are! :-wave

http://www.3dflite.com/dac/img/BANNER-soccer.gif Student Pilot - YSBKC152/Tomahawk/Warrior/Archer/Duchess69.3 hrs Total

Thanks!