GNav Basics 3: Great Circles & Rhumb Lines
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- Опубликовано: 18 май 2020
- This is the third video in a series covering the basics of GNav for ATPL students. This video tries to explain the difference between Great Circles and Rhumb Lines!
This series of GNav Basics also includes:
Video 1: • GNav Basics 1: Lat/Lon... . Refresher on Latitude & Longitude
Video 2: • GNav Basics 2: All Ab... . The Departure Formula
Video 4a: • GNav Basics 4a: Conve... . Convergency (part 1): Earth Convergency
Video 4b: • GNav Basics 4b: Conve... . Convergency (part 2): Rhumb Line and Great Circle Convergency, & Conversion Angle.
As ever, if you've found this video helpful then I'd greatly appreciate it if you could give it a thumbs up - and subscribe to the channel if you're not already. And if you've got ideas for future videos, please leave them in the comments below.
I spent 23 years in military aviation with 13 of those years as a pilot and also having my commercial license. The explanation here is hands down the best I have ever seen. Job well done !!!
Wow, that’s really humbling. Thank you very much 🙏
@@ATPLTips U R welcome :)
This video alone debunks all flat earth theories regarding flight paths rarely crossing straight over the Atlantic.
Thanks for sharing
great clarification, thanks for all the effort!
Cleared all my doubts in one go! Great job. Thanks!
Glad to hear it!!
I am an ATPL student and have just found your channel, You are the best of explaning the complex subjects in very simple forms , very productive and useful, I did already introduce your channel to all my friends. Thank you so much
That’s great to hear!! Thank you so much for your positive comments!!
Real lifesaver, thank you Tom!
Just found your channel. Really good and well thought out structure, especially as I'm a visual learner. Great for refreshing my brain, or filling in the big gaps I had. Many thanks.
Thanks for the feedback!
Hi Tom! Your videos are super helpful, please continue to make more of them!
Thanks! Ok I will :)
Only just found your channel! Such a easy explanation. Currently doing ATPLS at FTE Jerez got my EASAs in a couple weeks :)
Ah thanks for your kind comment! Good luck with your exams!!
I was a bit confused and now I’m not, thank you amazing video
Lovely tips !
Thnak you sir for this information ..God bless YOU ☺️
Spherical Trigonometry Projection and Great Circle Map
The Great Circle Map can be projected by Spherical Trigonometry. Any region or nation can be center in the Great Circle Map.
The transformation of xyz coordinations on the Globe or Map will be calculated.
Basic transformation of xyz coordinations has two steps that the rotation of cos circle and sin circle.
Namely, There are two formular. One is the rotation of cos circle and the other is the rotation of sin circle.
The formular of the cos circle rotation for A degrees
(x=cosAcosθr, y=sinAcosθr, z= sinθr)
The formular of the sin circle rotation for B degrees by using Rotation Matrix
(x1=cosBcosAcosθr+sinBsinθr, y1=sinAcosθr, z1=cosBcosAcosθr-sinBsinθr)
As the transformation is programmed with big data, the Great circle map can be used in the various fields such as science, geography, and climate.
Yuors video arę bery helpfull. You you arę bery good techer. Profesional work…👍
Very clearly explained 👍👍
Thank you.
bro you are awesome so precise.. I love you
Thank you so much 😀
I'm doing PPL exams in two days, I wish I watched this video earlier. and wish you had more videos about nav. Thank you!
fucking overkill bruh
Thank you so much !
Very good
Kindly confirm a Great Circle distance and a Rhumb Line distance between two points located on the Equator will be the same?
Thank you for your videos and explanations, they are of great help!
Hi your videos are helpful currently busy with my CPL and some questions reguire navigation computer with TAS and Wind knots which are out of sequence kinda stressful
Hi Tom, I can't see how to message you. I am interested in 1:1 tuition. Cheers, George.
Is calculator allow for the exam?
That’s a really great question! Each exam board seems to have slightly different rules, so you should definitely check with your own authority to find out what they allow! That’s a really good question though, lots of people ask it.
Of course ...
It might not be quite that obvious though. My ATPL instructor was not allowed one in his exams
Hi
The real reason why people are confused with great circles is that they believe in flat earth almost 90 percent of this world is not believing earth curvature so unless and until you explain firstly the curvature then people will understand that great circles are shortest
Next stage of Flat-Earth-Arguing ... :)
Your spoken English quite speed that's why i don't catch everything 😂..if u make a video in bengali on this topic , then I will caught full concept 😂😂
Bangla chole na bhai ekhane 😂
@@badhansaha21 hmm jni ...amni moja korlam
the Earth is demonstrably not a globe. please be honest with your audience and show how navigation works on a Flat Earth map
Yikes
@@ATPLTips? Navigators traveling on a latitude line South of the equator still correct to the north pole this is impossible on a globe.