Greetings.I'm looking for an online Great Circle 'Waypoint' calculator. I'd like to break up long GC flights paths for rhumb-line flying as did Lindbergh etc... There was a calculator online that would do this but I can't find it anymore. Anyone know where one resides? ThanksMiller

Hmm.. I have it. When I bought the TI-58 programmable calculator (20 years ago ??) I purchased the optional magnetic card with aviation/navigation. Such problem (GC approximated by Rhumbline segments) is solved there. I also have the manual that gives you the needed equations. I think you should be able to find those equation somewhere on the internet, if not I could perhaps photograph the page or two and email you. I won't be able to do it for the next 4 days - I won't be at work and this is where I keep this manual.Michael J.http://www.precisionmanuals.com/images/for...argo_hauler.gifhttp://sales.hifisim.com/pub-download/asv6-banner-beta.jpg

Thanks for replying Michael. There is actually a website somewhere that has a GC calculator that generates any number of waypoints along the flight path when you input the starting and ending points. I do have the formula for doing this manually but am looking for the easy way out. LoL Miller

Hi,Google is our friend!http://www.gazza.co.nz/greatcircle.htmlhttp://www.csgnetwork.com/marinegrcircalc.htmlhttp://www.waypoint.org/gps1-calc.htmlhttp://216.147.18.102/dist/indexhttp://gc.kls2.com/http://williams.best.vwh.net/gccalc.htmHope this helps,Jimhttp://www.hifisim.com/Active Sky V6 Development Team Active Sky V6 Proud SupporterHiFi Beta TeamRadar Contact Supporter: http://www.jdtllc.com/AirSource Member: http://www.air-source.us/FSEconomy Member:http://dot.kelder.net:8080/fseconomy/

Hey Jim. I have all those bookmarked and maybe am being too nitpicky but there is one website where you input start and end points and it allows you to choose the number of waypoints and it gives lat/lon of each waypoint, from 2 to 20 or more. I've searched for it but can't find it anymore. I'd like to take each leg (lat/lon start-lat/lon end) and calculate course-to-fly using trig and plot my own flight path with course changes. Miller

I thought that you originally wanted the GC approximated by Rhumb Line segments. I don't think any of the above links has this functionality.Michael J.http://www.precisionmanuals.com/images/for...argo_hauler.gifhttp://sales.hifisim.com/pub-download/asv6-banner-beta.jpg

http://www.flightplan.za.net/greatCircle.phpHere is the site I was looking for. Miller