Thread: Hard Deck
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  #27  
Old January 28th 18, 04:41 PM posted to rec.aviation.soaring
Steve Koerner
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Default Hard Deck

On Sunday, January 28, 2018 at 7:45:05 AM UTC-7, wrote:
(Not really a contest pilot here, so read with a grain of salt.)

I can see that the rules make the game and the current rules might encourage some folks to be unsafe. A hard deck data base with penalties seems a possible way to help this, but getting the details right for a hard deck database seems problematic if it is not to significantly limit strategy options.

Perhaps a simpler alternative would be a list of designated landing sites for a contest day.

Penalties would be accessed for not always keeping at least one under you according to some simple equation. (Perhaps looking at only L/D, minimum energy over terrain, and safety altitude.)

The goal is to not fix everything, but at least nudge strategic thinking in a safer direction.


The problem with that sort of approach is that there is no formula that can work. Not only do gliders differ in glide performance but the atmosphere differs a lot from time to time. Late in the day at a flat land site with no wind you might be able to count on 40:1 but in other circumstances 15:1 is all that is reasonably safe. Wind plays a big role in glide angles as well. What's more, the idea of creating a comprehensive database is impractical. For any given contest site that is about a one-man-year task. There is nobody to do that for us. If it has rained recently, it changes. If crops come up, it changes. Picking your very own out-landing place is pretty fundamental to the game.