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ETE value |
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oskrypuch 
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Joined: 09 Nov 2012 Location: CYFD Status: Offline Points: 3061 |
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 Topic: ETE valuePosted: 13 Dec 2014 at 12:48pm |
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Sitting on the ground, in the hangar, playing around, and I noticed that the ETE values filled in, in a flight plan I was loading.
Q1) Cool feature that it does it, but wondering what airspeed value it uses, when you are motionless on the ground and not in the air? Q2) When you are in the air, does it rely on your current airspeed (GS) only? * Orest Edited by oskrypuch - 13 Dec 2014 at 12:53pm |
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AviJake
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Joined: 26 Mar 2009 Location: Lincoln MA Status: Offline Points: 2815 |
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Posted: 14 Dec 2014 at 9:41am |
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I don't recall. I'll look this week.
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Steve Jacobson
sjacobson@avidyne.com |
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AviJake
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Posted: 14 Dec 2014 at 12:35pm |
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Just looked it up.
"Book values" are used
on the ground and are contained in an internal file. We built the software design to handle multiple different aircraft types but that became a mess in implementation so for now, the current values are
Cirrus-like. In the air we use current groundspeed.
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Steve Jacobson
sjacobson@avidyne.com |
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edanford
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Posted: 14 Dec 2014 at 12:37pm |
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Ed
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edanford
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Posted: 14 Dec 2014 at 12:40pm |
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A suggestion is to use the average speed ground speed stored in IFD540 for ground calculations if there is enough data (hours) stored. Cirrus average works well for me but that would not be very accurate for a Cessna 150 or 172
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Ed
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oskrypuch
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Posted: 14 Dec 2014 at 12:42pm |
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Or a user setting, on the AUX user settings page.
* Orest |
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