Message #5 Posted by geoff quickfall on, 1:55 a.m., In response to message #3 by Geoff QuickfallĪ little trivia: did you know that wristwatches were just ladies' accessories before a Brazilian inventor and aviator, one Alberto Santos-Dumont, started using one aboard his experimental flying devices? :-) Still use the cr3 although that was in the analog 737 alot, and not so much in the 777.įun items, my Breitling from 1965 and LED version from 74 both have the sliderule portions: Standard flight computer with the ability to do point to point nav on the wind side as well as wind vector analysis. You must have backup to GPS on smaller aircraft (civilian ) in case the batteries die on your handheld and be able to demonstrate its use. Still used today on smaller aircraft, and still required for all pilot exams. Message #3 Posted by Geoff Quickfall on, 11:10 p.m., I'm not sure what they learn with these days - probably the pilot app on your android/iphone! Potentially, lots of error in that last one. You had to figure out what your magnetic heading should be, based on your desired direction of travel, the speed of your plane, and the speed & direction of the (predicted!) winds aloft. I used it mostly for wind triangles (which you could also solve with your HP35 and some knowledge of trig). If you were a student pilot (in my case, in the 70s) you had one of these (or similar). Message #2 Posted by Dave Shaffer (Arizona) on, 11:05 p.m.,

Re: OT: Jeppesen E68 Wind-Easy Computer (Slide Rule) The title now has the correct model name - thank you Geoff for showing me the error of my ways.Įdited:, 10:57 a.m. I have never owned a specialized slide rule like this. OT: Jeppesen E6B Wind-Easy Computer (Slide Rule) OT: Jeppesen E6B Wind-Easy Computer (Slide Rule) The Museum of HP Calculators

Cpu 26a p computer air navigation