Compass bearing error calculation (advanced) P1
Вставка
- Опубліковано 16 лют 2024
- For map reading and navigation instructors. This video explains one method of calculating the exact results of a compass bearing error.
Mistakes do occasionally happen and, as an instructor, it is our role to be able to explain “exactly” what the results of an error would be. Using the method shown in the video it is very simple to give the “what would have happened” without the need for a course participant to walk into a, possibly, hazardous area.
This is the video which is mentioned in the Magnetic Declination Simplified video
If you don't remember the formula, you can calculate on half the triangle with the definition for: sin(A)= Opposite/Hypotenuse. Then you double the result. In our case it becomes. [ x= Radius * sin(45) ] then you double x
Excellent explanation. Please keep them coming. one small complaint, no waffle!
This is an old video (about a year ago - pre waffle). I had to re-upload it as there was a copywrite claim. This is the first claim I have had against me, but I'm told it is a common UA-cam scam. Oh well, that's the world we live in.
Thanks. Really appreciate the back to basics explanation, makes it much easier to understand and apply.
There's waffle on the official Part 2! 😅
Thanks for the video. I'd never used the chord method. I use the TOA formula which comes out very close. Love your videos..keep them coming
Sir, thank you for yet another excellent video.
Good teacher. If I were not in America, I'd definitely be interested in attending a course.
Great video thanks, as you said it’s not something you’ll ever be likely to use but interesting to know
👍
CHORD
2*R*(A°/2)”sin”=
2*456m*(90°/2)press sin & =
=644.8m
2x Distance(m) x
(error/2) “sin”=
pressing the sin button at the end on my Iphone/mac then = worked (brackets or no brackets still worked
If you take regular short walk bearing checks you should have less error. Just wondering how they get on in space travel?
Shiiiiiiiit,I did that math In me head , yup 😂! Simple 😂😂I understood everything you said Before you said it 😂😂😂😂. P.s. None told me There was going to be complex math problems in this new orienteering hobby I have taken up.🎉
I see, i am not that good with mathematics as you, so i use an other and in my opinion easier (less or easier mathematics ore calculations) method to calculate compass bearing errors. Your method certainly wil be more accurate as mine, but i dont have to calculate with sin etc. Not my speciality. I once learned it at school but i never understood it.
I am sorry, but to explain this in English is very difficult to me, but i give it a try. I hope you wil understand it. I use the knowledge of the mil, a circumference of 360° = 6400 mil.
In a distance of 1 Km an error of 1 mil is a distance of 1 m.
1° = 6400 mil / 360 = ±17,7777 mil (for the easy i use 1° = 18 mil).
So an error of 1° = 18 m.
-An error of 3° on a distance of 800 m wil give :
3 x 18 mil = 54 m @ 1 Km. for 800 m = 54 x distance in Km 0,8 = 43,2 m
3 x 17,777 = 53,3331 @ 1 Km for 800 m 53,3331 x 0,8 = 42,6664 (difference 0,53 m)
-An error of 7° on a distance of 2400 m wil give :
7 x 18 = 126 m @ 1Km. for 2400m = 126 x 2,4 Km = 302,4 m
7 x 17,7777 = 124,4439 for 2,4 Km = 124,4439 x2,4 = 298,6653 (difference 3,73 m)
This is the method how i use it for myself and how i explain it to a youth movement and boy scout group. And i hope they have understand it. They all said yes.
I'm sorry, are you saying "ch"ord? Pretty sure it's "k"ord.
A chord by any other name would be as straight. This guy’s channel is otherwise so brilliant that maybe he should be cut some slack on this one. Cheers.
Regardless, he's a genius and we all know what he means.
Hi
I am a little bit disappointed where is the waffle
Maybe because you don't have tea😂
Thanks