We have at this moment problems with e-mails coming to us via Microsoft servers (Outlook, Hotmail, Live, etc). We are in contact with Microsoft to solve this issue.

Jump to content
Sign in to follow this  
blindfinder

VNAV YOYO

Recommended Posts

Hello,

 

Is the VNAV descent ball not working on the A330? I can't perform a managed descent because the ball is bouncing up and down. This results in a steep dive of over >4000FPM and can only use vertical speed mode to follow the profile manually. I had the same issue with the smaller buses and wondering if anyone else is experiences this? 

 

A330 Version - 1.0.0.4

 

P3D Version - 4.5.13

 

Thank you

Share this post


Link to post
Share on other sites

No, not seen so far. Which Route, which weather conditions (weather engine)? Other flightparameters, like FL, load etc.

Share this post


Link to post
Share on other sites
  • Routes: All routes I have done in the USA; each arrival had a STAR and altitude constraints. Same happens if there is no STAR so I don't believe it's tied to the route.
  • FMGC: All altitude constraints were correct in the MCDU before descent. 
  • Winds: Happens whether I insert the winds or not, did not make a difference.
  • Weather Engine: ActiveSky for PD3V4 - latest version 7208
  • Weather Settings: Max Cloud & Wind Turbulence 20%, Turbulence Scale 10%, Enhance Turbulence Off, Realistic Thunderstorm Up & Down Draft Rate Off
  • Flight Level: Any flight level (FL300 - FL390); it starts as soon as I push managed descent. 
  • Speed: Cruise at 82 Mach with speed in managed mode.
  • Load: Under Max Landing Weight 160T - 165T
  • Reinstall: Completed, no change.
  • Framerates: Steady >20
  • Fuel Planner Only with no GSX
  • A330 Version - 1.0.0.4
  • P3D Version - 4.5.13
  • Flight Controls: TM Warthog (Calibrated with no issues in manual flight)

 

The ball is steady at first; then as the waypoint gets closer it drops suddenly and the aircraft pitches >4000FMP to chase it. Then the VNAV ball starts to YOYO and descent profile is all over the place. 

 

Thank you

Share this post


Link to post
Share on other sites

That could be explained  by low fps (even momentarily). See Vol 1 of the manuals about that.

Share this post


Link to post
Share on other sites

Please post the route, arrival, transition and runway so we can check the case by ourselves.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×
×
  • Create New...