On Sunday, May 28, 2017 at 2:17:08 AM UTC-7, Bruce Hoult wrote:
On Sunday, May 28, 2017 at 9:17:29 AM UTC+3, Andy Blackburn wrote:
On Saturday, May 27, 2017 at 5:18:24 PM UTC-7, Craig Reinholt wrote:
I prefer setting an appropriate pattern entry altitude for the simple reason that many places I fly have a ridge or other high obstacle to clear before I get home. The LX9000 software will show if my current final glide will clear the offending obstacle. Granted, it isn't full proof, but it gives a general idea. Setting the reserve to zero negates this feature.
Craig

Not having used one of these devices: if you set 1000' reserve and Mc=10, will you be at 1000 ft when you arrive, or after you pull up?

My understanding is they have total energy in the calculation, but I believe they calculate finish height assuming you are still going at the STF for the McCready setting, so the total energy altitude adjustment is for deviations away from the Mc setting. Pushing and pulling on final glide ought not generate changes in estimated arrival altitude, unless you fly off-STF for a long time.

It's hardly ever well documented, so YMMV.

Andy Blackburn
9B