PPRuNe Forums - Question clarification

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Flion

9th July 2018 12:47

Question clarification

Going through some question bank. A few questions, together with explanations
make me confused, I wonder if there is a mistake.
Question:

https://cimg1.ibsrv.net/gimg/www.gmf...2ce0dae06d.jpg

How did they get drift 5 STBD?

eckhard

9th July 2018 13:37

Because if you are heading 296(T) and are tracking 310(T), you are drifting to the right?

If your track is to the right of your heading, that is known as starboard drift.
If your track is to the left of your heading, that is known as port drift.

Or am I hopelessly out of date?

Flion

9th July 2018 14:50

How did they get the value 5? Shouldn't it be 14? Or I'm getting something wrong?

RichardH

9th July 2018 14:57

It looks like 14 degrees of right/starboard drift (not 5), agree answer 190(T)/63

Flion

9th July 2018 16:39

@RichardH
how did you calculate it? I can't place a mark on my E6B that is 14° on the side of 225 TAS, while GS is 250. Maximum is about twelvish.

eckhard

9th July 2018 16:54

Quote:

Originally Posted by Flion (Post 10192472)

How did they get the value 5? Shouldn't it be 14? Or I'm getting something wrong?

D’oh! I read it as 301, not 310! You’re quite right; it should be 14.

Flion

9th July 2018 20:01

Thanks guys. I was confused indeed.

Flion

9th July 2018 20:11

https://cimg8.ibsrv.net/gimg/www.gmf...a110768ac4.jpg

What am I doing wrong? None of my e6b calculations match these answers. Green is correct.

https://cimg3.ibsrv.net/gimg/www.gmf...39153eb699.jpg

My e6b calculation says GS 143 and 6°. Doesna fit any of the answers...

RichardH

9th July 2018 21:52

Both my 1975 E6-B2 and 1977 CRP-5 both give the correct answers above. Don't forget on both of the above problems you will NOT have to correct for drift (balancing/shuffling) as you have been given a heading (not track). After entering the wind DOWN place centre dot on TAS then turn to heading now (DON'T MOVE ANYTHING) where the pencil dot is the answer. Given your incorrect answer I reckon you have done exactly what I said as I get your incorrect answers if I thought this was a balancing problem. Note to previous you will have to change to high speed scale on E6B to get a drift of 14.

Flion

10th July 2018 06:37

You are right Richard, I have done it incorrectly. Thanks for the help.

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