Dear Morgan Wiley,

 

Your idea about flexible flaps and the horizontal stabilizer sound very great to me and I hope PMDG will pass trough your idea. In my opinion it can be possible since they already succeed in modelling flexible wings.

 

About rotating fan blades, keep in mind that these blades are aerodynamic sufficient modelled to rotate without too many 'profile-drag, Pd'. Besides that, to save fuelburn by the turbine if the engine, it's becessary to rotate the blades without too many friction.

 

As far as I know the NGX has the windmill effect. If that's what you're talking about...

As far as I know the NGX has the windmill effect. If that's what you're talking about...

 

That's what I thought. I have been looking for it lately but have not seem them turning.

My other question is for PMDG. I know the limitations of FSX could fill every page of the Bible, but would shaking flaps and horizontal stabilators be a possibility? I most commonly see the flaps shake during landing, especially in a 737 with flaps 40. When the aircraft touches down and starts reverse thrust, the flaps do shake noticeably. Again, the horizontal stabilizer shakes on both takeoff and landing. I know the PMDG wing flex is incredible, and if they could move that technology to the flaps and stabilizer, the only thing separating us from the real thing would be a computer screen.

 

Unless something has changed since the NGX, that's not possible. I asked them just before the release of the NGX and they said it wasn't possible due to the animation limit in FSX. Things like wingflex carry a higher priority than this. This is the same reason the windows didn't open in the cockpit, too.

I know of some addon that has the windmilling effect during push, not sure if it is the NGX however.

I do believe it is either NGX or the CS 757.

 

Funny I saw a reply to this topic about the wind colliding with the Tail of the aircraft, and that therefore makes the aircraft hard to taxi, however I thought that friction of the tires coupled with the added weight of the aircraft make it hard for any aircraft to be turned while taxiing in real life by the effect of wind.

 

My guess would be that however in FSX, there is no, or too little friction modeled between the contact surface, and the tires, then when wind gusts, the airplane turns into the direction the wind is blowing towards, making it really hard to taxi.

Funny I saw a reply to this topic about the wind colliding with the Tail of the aircraft, and that therefore makes the aircraft hard to taxi, however I thought that friction of the tires coupled with the added weight of the aircraft make it hard for any aircraft to be turned while taxiing in real life by the effect of wind.

 

My guess would be that however in FSX, there is no, or too little friction modeled between the contact surface, and the tires, then when wind gusts, the airplane turns into the direction the wind is blowing towards, making it really hard to taxi.

 

It's not that it's hard. It's that people were complaining that the plane was veering in certain directions during taxi. Wind pushing up against that tail is going to generate a torque force, regardless of the stickiness of the rubber and the weight of the aircraft. You're correct that it's exaggerated in the sim, though, for the reasons you mentioned.

Not sure the engines shake durig turbulence. They bend and move as they meet the oncoming air currents. Which is why sometimes you get fan scrape with the casing.

 

I also doubt that PMDG could realistically recreate shudder when landing. If you look at how stiff the wing flex is, shudder would just look weird.

 

Turbulence will cause your wing to move up and down, bend, and twist. As the linkage between the engine and the wing is not infinitely stiff, the engines certainly will shake. Whether the amount they shake would be visible in the sim (i.e. is more than a pixel or two) is a different matter. It's like when you put a pen on your desk, your desk will bend down very slightly, the deformation is just so small you can't see it.

It's like when you put a pen on your desk, your desk will bend down very slightly, the deformation is just so small you can't see it.

 

Now I seen everything where did you ge this information from?

Now I seen everything where did you ge this information from?

 

We have a 50cm long metal bar in our school. It is 2cm x 3cm (wide x height) and looks pretty strong. On the top side along the bar there is a special foil attached. The foil changes it's electrical resistance as it changes it's lenght. If you attach one end of the bar at a table and you put a coin on the other endy you can messure the change of the foils resistance as the metal bar get's stretched at the top side due to the weight of the coin.

You can't see that the metal bar get's deformed with your eye, however you can see that the foil changes it's lenght due to the weight of the coin.

 

Pretty useless but cool B)

Now I seen everything where did you ge this information from?

 

It's basic mechanics of materials. Whenever you apply a force to something it will deform. How much it will deform depends on the structure and the material used.