SkyDemonLight & airways inaccuracies ?
Join Date: Apr 2008
Location: Birmingham
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Sky Demon Light HDG and GS accuracy
Hi, Has anyone else noticed that the HDG and GS produced on the Skydemon light PLOG is inaccurate
I just plotted a route from EGBO to Fairford
track 161. If you add in a wind of 160 at 15 and an IAS of 100. The Track is correct but the GS is 89. Shouldn't it be 85??
Or am I going mad..
Confused!!
I just plotted a route from EGBO to Fairford
track 161. If you add in a wind of 160 at 15 and an IAS of 100. The Track is correct but the GS is 89. Shouldn't it be 85??
Or am I going mad..
Confused!!
Join Date: Jun 2007
Location: Swindon, Wiltshire
Age: 49
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The GS / leg time varies based on altitude and also on the length of the leg because a preset climb and descent profile is also included. It also takes into account the difference between TAS and IAS.
If you plot a triangular route and mess around withe the altitude of the whole route, you'll see even on the 'middle' leg, where there is no climb or descent, that the speed will change.
If you plot a triangular route and mess around withe the altitude of the whole route, you'll see even on the 'middle' leg, where there is no climb or descent, that the speed will change.
Join Date: Apr 2011
Location: Leigh-on-Sea, Essex
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NATS have replied to me today advising:
I would therefore expect there to be some chart amendments in due course.
My post of 25th April 2011 at 10:49 contains the details.
Hope this answers everybody's queries.
Dave
Apologies for the delay in responding but I can now confirm that we have looked at the VFR charts are the areas are indeed missing; the master data has been amended to reflect the correct airspace.
My post of 25th April 2011 at 10:49 contains the details.
Hope this answers everybody's queries.
Dave
