Hi Guys!

 

Like a lot of other people, I have been watching all kinds of 777 videos in anticipation for its release. One thing I wondered was why the fan blades spin very slowly during push back or while sitting at the gate. My first thought would be the general wind blowing through the cowling, spinning the fan blade, but... It just seems to me that it would take a lot more than a 10 knot wind to spin a 12 ft plus high (don't quote me on it) set of fan blades. I notice this on some pushback videos, so I know the engines have been shut down for a significant period of time; they wouldn't still be spooling down.

 

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.

 

Thoughts, comments, stupid post? :lol: (Hopefully not...)

 

 

Morgan Wiley

Gday Mate,

I to have watched a lotttttt of T7 videos , im certain that is the wind, theres one where they are swapping the engines with the hanger doors closed and the blades still spin, its remarkable how little wind it takes. My favorite videos are wing views at take off (T7) take care

Jeff

Happens on all turbo fans, due to the wind :-)

 

Oh and Project airbus actually animated the fans rotating when they were shut down on their A380!

There is very little friction in the linkages within the engine, so it doesn't take much to spin the fan blades.

 

There is very little friction in the linkages within the engine,

 

Presumably for efficiency?

Yes.

 

Guys, remember that a fan is a fan. Air moving through the fan disc is going to cause it to spin. The reason it's more obvious on larger jets is that the engine blades are easier to see, and they have more surface area to be affected by the wind.

 

Similarly, when you're having difficulty taxiing in high winds, remember you have a giant sail on the rear of your plane. The windmilling and taxi difficulties seem to perplex simmers all over the place, so I figured I'd mention it.

If PMDG can make the flaps shake on landing then i would love to see that feature in the 777

I think we are going to be in for treat!

Would be nice, but I'm betting it comes down to the number of animations they have to play with. Don't quote me on that, as I've no idea how to even make a kite in MSFS...

i would like to know what rob ment by "we have had a break through". hope he says in the next update!

i would like to know what rob ment by "we have had a break through". hope he says in the next update!

 

Where did he mention a breakthrough?

If PMDG can make the flaps shake on landing then i would love to see that feature in the 777

 

Jason said the engines will shake during turbulence so I think we can see some detail like so! :-)

Where did he mention a breakthrough?

 

he said it in one of the updates he made. cant remeber which one.

 

Thomas Wills

Where did he mention a breakthrough?

 

Here (Post #72):

 

http://forum.avsim.net/topic/380842-26jul12-pmdg-777-for-fsx-let-the-previews-begin/page__st__50

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.