This just makes me feel like I'm on the wrong school to take my cplh ....many thanks for sharing this amazing explanation! It makes more easier to understand the polar charts!
I think from the entire Gen Nav course, excercises concerning grid nav are a pain in the ass . Luckily with this simple explanation it became a little less pain in the ass :-)
This is far the best explanation available! I use Aviation Exam for q.practice and directly go to check your website if would be able to combine together AE and Cat3C for better results in my exams. Technical parts and memo topics like Air Law I find. Ot so difficult, but G.Nav is another cup of tea!
One proposal is to remove PS and Grid but (a) the proposal has not been passed yet and (b) as you rightly say, those LO's are not due for implementation until 2018 at the earliest. They are still coming up in exams - it never ceases to amaze me how "I didn't get any PS questions" becomes "They've stopped using PS questions" within a matter of hours of an exam. :-) Considering how easy PS questions are - they are only isosceles triangles - I would rather see an exam full of PS questions than a multitude of Lambert's convergency questions, complex time (sunrise to UTC to standard) questions and confusing altimetry questions with ambiguous conversion factors...27 ft, 30 ft, from QNH datum, QFE datum or 1013???? Whatever is removed may be replaced with something worse - that is exactly what happened in 2012. 54 questions in 2 hours to 60 questions in 2 hours, with a batch of approx. 6 simple general knowledge questions replaced by 12 calculation questions..... with no additional time. Be careful of what you wish for.
amazing explanation but it s quite complicated for some people! my point of view is that you need only the sketch, the points and the protractor whick is align on the 180 Meridian
Great explanation is just that the most confusing part was the anti meridian calculation of which convergency is calculated by 20 degrees different between true track and grid north
Still I am a bit confused once the q.says Grid North is aligned with Greenwich meridian (N.Hem) and the GN is aligned with 180meridian (AE q.16227) and once it says “aligned with Greenwich meridian” on Southern Hem. and the GN is aligned with 000deg. (AE question 51828). Any suggestions? Except that it is clear, just sometimes it makes 180deg difference.
The Grid can be aligned with either the Greenwich Meridian or the W/E180 meridian, in either the southern or northern hemisphere. The simple rule is Grid = Greenwich - Grid North = Up (the page), Grid = W/E180 - Grid North = Down (the page).
Thank you for fast reply. So basically once the question say GN aligned with the Greenwich Meridian the GN is towards the top end of paper on both S/N hemisphere but I just use the rule South Hemisphere 000 up page, North Hemisphere 180up the page. Is that just only so simple?
@@brokozor Yep, that simple. The biggest problem I find is that people get the orientation of the northern and southern hemispheres mixed up. ALL meridians point outwards from the South Pole and inwards towards the North Pole. The Greenwich Meridian always points UP the page and the W/E 180 meridian points down the page. What you must remember is that, in the northern hemisphere the North Pole is the centre of your circle and the GM points upwards from the bottom edge of the circle into the centre of the circle; in the southern hemisphere the South Pole is the centre of your circle and the GM points upwards from the centre of the circle (away from South) to the top edge of the circle (towards North).
Hi, this may sound stupid but what if the question was replaced with the North Pole instead of South Pole, is there any difference to solve the question?
Yes, of course. The Greenwich Meridian (GM) runs upwards from the bottom edge of the circle to the centre of the circle (the North Pole). Easterly and westerly meridians are then measured right and left (respectively) from the GM. It is very important to understand the difference between the views of the northern and souther hemispheres, just as important as it is to understand the relationship between westerly and easterly meridians when viewed in relation to the GM or when viewed in relation to the W/E180 meridian. *Looking at GM = westerly on left, easterly on right *Looking at W/E180 = westerly on right, easterly on left The best thing you can invest in for this is a small globe (that you can draw on with whiteboard markers).
The Grid Datum Meridian (GDM) will be stated in the question. Any meridian can be the GDM, although, from experience the examiner has only used the 000 and 180 meridians in the exam questions. Hope that helps. :-)
great I see.. can you take a look at this? a route is drawn from (75 N 60 E) to ( 75 N 30 W) on a polar Stereographic chart with grid aligned with the greeenwich meridian. The Grid Track (GT) is... and how come the initial True course is 360 -45?
What is the limitations of this projection. .... Answer . The complete hemisphere cannot presented because equator infinite. . This answer right or wrong . Can u tell me.. Plz
We are only concerned with the requirements of the EASA syllabus so we don't go into the full limitations of a stereographic projection. For the purposes of the EASA syllabus, the 'usable area' limitations of the Polar Stereographic chart are from N70 - N90. Although this is limited to an azimuthal PS chart which has its origin at the pole itself. The Polar Stereographic projection provided in the Jeppesen GSPRM "cuts into" the Earth at N75, and would have a usable area from the pole down to approx. N60 (although these properties are not examined)
![[LIVE] : ONE ลุมพินี 91 | คู่เอก "คมอาวุธ vs อเล็กเซย์"](http://i.ytimg.com/vi/V0RkEfYFsgM/mqdefault.jpg)
thank you very much. i swear when i finish atpl, i will go 3 months on a monastery to calm down from all this.
Menios Gold exactly my thoughts
It’s for a better future my dude
Amen
😂
*three months on the beer
Thank you for this video and the Ebooks, took Gnav a few weeks ago and got 91%. Many thanks!
This just makes me feel like I'm on the wrong school to take my cplh ....many thanks for sharing this amazing explanation! It makes more easier to understand the polar charts!
Simply the best explanation I have found of this topic! Really appreciate it!
This explanation is PERFECT. Thank you very much. Really appreciate this.
The best explanation on this topic I've found so far
I think from the entire Gen Nav course, excercises concerning grid nav are a pain in the ass . Luckily with this simple explanation it became a little less pain in the ass :-)
And you should see the method I show my students on the course.....oh, the joy when the penny drops!! :-)
Thankyou! I was struggling to understand which angles to measure. You're explanation cleared that.
simple and straightforward. GJ on the videos u're providing!
Wow! Actually it is very easy! Thank you very much. I would like to have a teacher like you!
You’re an absolute Legend Sir thank you!
Lots more Polar stereographic videos at atplontrack.com
Thank You. Perfect explanation. The best which I found.
This is far the best explanation available! I use Aviation Exam for q.practice and directly go to check your website if would be able to combine together AE and Cat3C for better results in my exams. Technical parts and memo topics like Air Law I find. Ot so difficult, but G.Nav is another cup of tea!
Very good explanation... now it is quite easier for me to know hot to proceed with these questions!
I am really wishing I knew about your school before I blew money elsewhere. Thanks for making these videos.
Dayı muhteşem anlattı valla helal olsun, pırıl pırıl. Thanks a lot
How can i be sure which corner it is, as you show on @ 7:17 i seem to choose the wrong corner , and is it the same corner if it would be the NP?
God, I wish you were my teacher. Thank you so much for this video
OMG。so clear now for me，i just performed this question in the morning ，and i was confused , thx this Vedic
Honor
One proposal is to remove PS and Grid but (a) the proposal has not been passed yet and (b) as you rightly say, those LO's are not due for implementation until 2018 at the earliest.
They are still coming up in exams - it never ceases to amaze me how "I didn't get any PS questions" becomes "They've stopped using PS questions" within a matter of hours of an exam. :-)
Considering how easy PS questions are - they are only isosceles triangles - I would rather see an exam full of PS questions than a multitude of Lambert's convergency questions, complex time (sunrise to UTC to standard) questions and confusing altimetry questions with ambiguous conversion factors...27 ft, 30 ft, from QNH datum, QFE datum or 1013????
Whatever is removed may be replaced with something worse - that is exactly what happened in 2012. 54 questions in 2 hours to 60 questions in 2 hours, with a batch of approx. 6 simple general knowledge questions replaced by 12 calculation questions..... with no additional time.
Be careful of what you wish for.
Such a nice, explanatory video! Thank you for posting and sharing with us.
amazing explanation but it s quite complicated for some people! my point of view is that you need only the sketch, the points and the protractor whick is align on the 180 Meridian
Go to atplontrack.com and see my other GNAV and other explanations. I will be adding more videos to atplontrack.com in the very near future.
Great explanation is just that the most confusing part was the anti meridian calculation of which convergency is calculated by 20 degrees different between true track and grid north
You are amazing sir!
Still I am a bit confused once the q.says Grid North is aligned with Greenwich meridian (N.Hem) and the GN is aligned with 180meridian (AE q.16227) and once it says “aligned with Greenwich meridian” on Southern Hem. and the GN is aligned with 000deg. (AE question 51828). Any suggestions? Except that it is clear, just sometimes it makes 180deg difference.
The Grid can be aligned with either the Greenwich Meridian or the W/E180 meridian, in either the southern or northern hemisphere. The simple rule is Grid = Greenwich - Grid North = Up (the page), Grid = W/E180 - Grid North = Down (the page).
Thank you for fast reply. So basically once the question say GN aligned with the Greenwich Meridian the GN is towards the top end of paper on both S/N hemisphere but I just use the rule South Hemisphere 000 up page, North Hemisphere 180up the page. Is that just only so simple?
@@brokozor Yep, that simple. The biggest problem I find is that people get the orientation of the northern and southern hemispheres mixed up.
ALL meridians point outwards from the South Pole and inwards towards the North Pole. The Greenwich Meridian always points UP the page and the W/E 180 meridian points down the page.
What you must remember is that, in the northern hemisphere the North Pole is the centre of your circle and the GM points upwards from the bottom edge of the circle into the centre of the circle; in the southern hemisphere the South Pole is the centre of your circle and the GM points upwards from the centre of the circle (away from South) to the top edge of the circle (towards North).
Hi, this may sound stupid but what if the question was replaced with the North Pole instead of South Pole, is there any difference
to solve the question?
Yes, of course.
The Greenwich Meridian (GM) runs upwards from the bottom edge of the circle to the centre of the circle (the North Pole). Easterly and westerly meridians are then measured right and left (respectively) from the GM.
It is very important to understand the difference between the views of the northern and souther hemispheres, just as important as it is to understand the relationship between westerly and easterly meridians when viewed in relation to the GM or when viewed in relation to the W/E180 meridian.
*Looking at GM = westerly on left, easterly on right
*Looking at W/E180 = westerly on right, easterly on left
The best thing you can invest in for this is a small globe (that you can draw on with whiteboard markers).
amazing explanation..thanks
how come 180 E/W is the grid meridian?
is it the same in every situation?
The Grid Datum Meridian (GDM) will be stated in the question. Any meridian can be the GDM, although, from experience the examiner has only used the 000 and 180 meridians in the exam questions. Hope that helps. :-)
great I see.. can you take a look at this?
a route is drawn from (75 N 60 E) to ( 75 N 30 W) on a polar Stereographic chart with grid aligned with the greeenwich meridian. The Grid Track (GT) is...
and how come the initial True course is 360 -45?
i was following perfectly until minute 6:50 then i lost you, i dont get why did you go to 150 degree and where all those lines coming from !
Because If you have two angles at same line (divided by another) has to give a sum of 180. 180-30 = 150.
Definitely Helped me. Thanks so much.
So clear! Thank you a lot
Thanks 😊
What is the limitations of this projection. .... Answer . The complete hemisphere cannot presented because equator infinite. . This answer right or wrong . Can u tell me.. Plz
We are only concerned with the requirements of the EASA syllabus so we don't go into the full limitations of a stereographic projection. For the purposes of the EASA syllabus, the 'usable area' limitations of the Polar Stereographic chart are from N70 - N90.
Although this is limited to an azimuthal PS chart which has its origin at the pole itself. The Polar Stereographic projection provided in the Jeppesen GSPRM "cuts into" the Earth at N75, and would have a usable area from the pole down to approx. N60 (although these properties are not examined)
Thank you sir !
thank u sir
thank you! great explanation.
Thank you! Great explanation! :-)
THANK YOU 😃
Thank you so much
thank you my boss!
awersome
Thank you!
Now I understand, why so many people always entered with 15 different coloured markers on their Gnav sessions...
Can't get enough colours for GNAV! :-)
1:20
thank you :)
I love you
U da man
f
Bullshits maths, none of these bullshit will ever be used practically in any pilots lifetime, except for passing exams.
Waste of time and energy
Up near the pole with no irs or gps you have the sun, a pencil and a piece of paper, will you get lost?