Answers
CNS assignments with answers and cases
- Course
- Institution
This is a file with all commands including answers and the cases to be learned for the course CNS.
[Show more]
3 reviews
By: niekkronemeyer50 • 1 year ago
By: laurensribbers • 2 year ago
By: laurensbrinker1 • 4 year ago
Seller
Follow
koekjes
Reviews received
Content preview
CNS Exercises with answersWeek 1
Lateral Position
1. What is the EHAM/AMS WGS84 Lat/Long coordinates in 3 formats:
Amsterdam AMS (Basic) = 52°18’29”N/ 004°45’51”E
Amsterdam AMS (FMS) = 52°18,5’ N/ 004°45,8’ E
From Minutes/Seconds to decimal Minutes:
18+29/60 = 18,48333
45+51/60 = 45,85
Amsterdam AMS (Mathematica) =52,3081°N004,7642°E
1° = 60 minutes
From Minutes to decimal Degrees:
52 + 18, = 52 + + = 52,3081
4 + 45, = 4 + + = 4,7642
2. Prove that 1 nm = 1852m, use the circumference of the earth ± 40000 km by definition, a Nautical
mile = distance of 1 minute great circle (GC)
Circumference of the Earth is (about) 40000km – for 360°
1 NM is 1 minute of angle
And 1 minute of angle is 1/60 of 1°
Thus, 1 NM = 40000*1000/(360*60) = 1852 m
3. What is the accuracy of the position in format 1 (normal WGS84 format)?
WGS84 format: 1 second of 1°
1NM for 1 minute
So, for 1 second: 1852/60 = 31m
4. What is the accuracy of the position in format 2 (FMC format)?
FMC format: 1 decimal (1/10) of a minute
1NM for 1 minute
So, for 1/10 of a minute: 1852/10 = 185m
5. What is the accuracy of the position in format 3 (Engineering format)?
Engineering format: 4 decimals (1/10000) of 1 degree
1NM for 1 minute 60NM for 1 degree
So, for 1/10000 of a degree: 1852*60/10000 = 11m
GC Distance
6. Find the shortest GC track and distance in nm from position 00⁰N 168⁰W to 00⁰N 173⁰E:
Along equator 19°
There are 60 minutes in 1 degree, and 1NM per minute, so 1 degree corresponds to 60NM.
So, 19 * 60NM = 1140NM
7. Find the shortest GC track and distance in nm from position 60⁰N 168⁰W to 60⁰N 173⁰E:
Change in Latitude of 60°N, so, distance is reduced by Cos(60°) = 0.5
19° * 0.5 = 9.5°, 9.5 * 60NM = 570NM
8. Find the shortest GC track and distance in nm from position 60⁰N 168⁰E to 60⁰S 168⁰E:
Along Longitude for 120°, so, 120 * 60NM = 7200NM
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller koekjes. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $4.87. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
64438 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now