Avidyne Homepage
Forum Home Forum Home > Avidyne General > IFD 5 Series & IFD 4 Series Touch Screen GPS/NAV/COM
  New Posts New Posts RSS Feed - Turn anticipation question
  FAQ FAQ  Forum Search   Register Register  Login Login

Turn anticipation question

 Post Reply Post Reply
Author
Message
pchetham View Drop Down
Newbie
Newbie


Joined: 30 Oct 2015
Location: Denver
Status: Offline
Points: 7
Post Options Post Options   Thanks (0) Thanks(0)   Quote pchetham Quote  Post ReplyReply Direct Link To This Post Topic: Turn anticipation question
    Posted: 30 Oct 2015 at 6:53pm
Does the IFD540 Navigator support GPSS turn anticipation? When I select an IAF that depicts a hold for the course reversal, I will fly past the fix (to the non-holding - unprotected side) before turning to  enter the hold. The fix is a published fly-by (not a fly-over) way point. I would have expected GPSS turn-anticipation would have turned me before reaching the fix to keep me on the hold (protected) side of the final approach course.

Thanks
PMC
Back to Top
Gring View Drop Down
Senior Member
Senior Member


Joined: 30 Dec 2011
Location: Kingston, NY
Status: Offline
Points: 722
Post Options Post Options   Thanks (0) Thanks(0)   Quote Gring Quote  Post ReplyReply Direct Link To This Post Posted: 30 Oct 2015 at 7:54pm
Yes.
Back to Top
pchetham View Drop Down
Newbie
Newbie


Joined: 30 Oct 2015
Location: Denver
Status: Offline
Points: 7
Post Options Post Options   Thanks (0) Thanks(0)   Quote pchetham Quote  Post ReplyReply Direct Link To This Post Posted: 30 Oct 2015 at 8:52pm
But apparently not for the situation I described. I also confirmed this on the simulator - does the same thing - overflies a fly by way-point.
PMC
Back to Top
oskrypuch View Drop Down
Senior Member
Senior Member


Joined: 09 Nov 2012
Location: CYFD
Status: Offline
Points: 3058
Post Options Post Options   Thanks (0) Thanks(0)   Quote oskrypuch Quote  Post ReplyReply Direct Link To This Post Posted: 30 Oct 2015 at 9:57pm
What is the airport/approach, and what is the waypoint?

* Orest

Back to Top
pchetham View Drop Down
Newbie
Newbie


Joined: 30 Oct 2015
Location: Denver
Status: Offline
Points: 7
Post Options Post Options   Thanks (0) Thanks(0)   Quote pchetham Quote  Post ReplyReply Direct Link To This Post Posted: 01 Nov 2015 at 9:54pm
This seems to be the case for any IAF (coupled approach - DFC90 autopilot) where you are positioned for a parallel entry for the course reversal (I also tested this using the simulator - same result). In my airplane I was Northeast of HRMER (RNAV 35 approach - KFTG). I overflew HRMER, was West of the final approach course. GPSS then turned me back to intercept the outbound course. This put me on the "unprotected" side of the hold. I would have expected the GPSS steering to anticipate the turn and intercept the outbound course without overflying the fix.







PMC
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.01
Copyright ©2001-2018 Web Wiz Ltd.

This page was generated in 0.090 seconds.