navigation questions
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navigation questions
1. An aircraft flying a constant hdg with 5 deg. Starboard drift making good a track parallel to the center line of the airway, but 5nm to the right of the centerline, find ADF reading from an NDB situated 30 nm ahead of the centerline of the airway.
2. An aircraft flying a constant hdg with 8 deg. port drift making good a track parallel to the center line of the airway, but 5nm to the right of the centerline, find ADF reading from an NDB situated 30 nm ahead of the centerline of the airway.
2. An aircraft flying a constant hdg with 8 deg. port drift making good a track parallel to the center line of the airway, but 5nm to the right of the centerline, find ADF reading from an NDB situated 30 nm ahead of the centerline of the airway.
Not sure that my answers are correct, but this is how I worked it.
In both cases the plane is 5nm right of track at 30 NM, therefore 10 nm right of track at 60 nm. 1 in 60 rule says that's 10 degrees off the NDB. So if there was no drift the ADF would show 350 (10 degrees right).
However in first case drift is 5 degrees to the right so 5 comes off the reading 350 - 5 = 345
In the second case drift is the other way 350 + 8 = 358, 2 degrees left of the nose.
In both cases the plane is 5nm right of track at 30 NM, therefore 10 nm right of track at 60 nm. 1 in 60 rule says that's 10 degrees off the NDB. So if there was no drift the ADF would show 350 (10 degrees right).
However in first case drift is 5 degrees to the right so 5 comes off the reading 350 - 5 = 345
In the second case drift is the other way 350 + 8 = 358, 2 degrees left of the nose.
Now, doesn't right drift = crabbed to the left? In which case question 1 is 355 and question 2 is 342
To me I apply starboard drift to a wind coming from the right but lets see what the other "experts" say.........
Stupid questions! (No offense intended Sunny!)
Nobody in their right mind would be tracking on an NDB - this is 2008 after all.
Just push the "Direct To" button on your GPS.
Dr
Nobody in their right mind would be tracking on an NDB - this is 2008 after all.
Just push the "Direct To" button on your GPS.
Dr
Last edited by ForkTailedDrKiller; 29th Apr 2008 at 09:29.
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It's an exam question, so I suppose the (multiple choice) answers specify answer in °Relative.
QF2 would get the answer right in the exam.
FTDK would get the job at the interview...
(5nm off track within 30nm of an on-airway navaid? In what universe?)
QF2 would get the answer right in the exam.
FTDK would get the job at the interview...
(5nm off track within 30nm of an on-airway navaid? In what universe?)
I am curious as to where you got the "track" to start with
Stupid questions!
Nobody in their right mind would be tracking on an NDB
If you are not rated on GPS or don't have a GPS in the aircraft what are you expected to do at a NDB only airfield? Let me guess - get a GPS!
And when the GPS croaks what then......
And when the GPS croaks what then......
Dr
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Tune up the NDB on that old valve powered ADF thingy and point the needle in the right spot......then the plane gets there too!
If thats too hard, refer to FTDK's most appropriate solution. And if you are spoiled enough follow the magenta line it gives you!
And Benty.....when it croaks it, pull out the spare GPS, you should have 3 ya know
J
If thats too hard, refer to FTDK's most appropriate solution. And if you are spoiled enough follow the magenta line it gives you!
And Benty.....when it croaks it, pull out the spare GPS, you should have 3 ya know
J
So doesnt that make it 180 on those answers?
You could be assuming the aircraft is on a northerly track (not stated) and calculating the bearing from the NDB back to the aircraft.
Last edited by bentleg; 29th Apr 2008 at 11:50.
It depends what you read into "starboard drift" and "port drift". You may well be correct, if so I agree with your answers.
In question one, 5 deg starboard drift means the nose is pointing 355 relative to the TMG, the NDB is 350 relative to the TMG (1/60 rule) which makes the NDB bearing 355 relative to the aircraft.
Question two is 342 relative.
In other words, QF2 has it right.