NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Teaching a Running Fix
From: Joe Schultz
Date: 2009 Dec 13, 17:10 -0800
From: Joe Schultz
Date: 2009 Dec 13, 17:10 -0800
Lu, thanks for your input. If you put your PowerPoint presentation "into the archives" then I'll need directions to get there. I'd like to see it. Master Chief's "bring the LOP along" clangs the bells, but I've found Lu's idea works well when considering course/speed changes. Lu and Master Chief are looking at the same LOP from two different directions. Either is correct. It seems that I'm doing the same thing as Lu. Lu's "clone" is my "object's pretend twin brother." I may start a bit differently - I start by reminding the students that a fix is two or more "simultaneous" LOPs. That way the concept of moving forward or backward in time makes no difference to them, after describing the need to construct a "pretend" LOP from a "real" LOP, matching the time of a second "real" LOP. Perhaps, if there's interest, I'll write up my complete thoughts after I've seen Lu's presentation. Haven't taught this formally, but have done lots of "on the spot" tutoring. For the rest: a gentle reminder to remember the problem statement. We have new navigators, and we haven't assumed that they understand the concept of set/drift. I hope there's more than two people with ideas of how to describe this to a beginner. Joe -- NavList message boards: www.fer3.com/arc Or post by email to: NavList@fer3.com To , email NavList+@fer3.com
