hello
do you have a quick way to calculate drift for wind in a hold instead of bracketing , or is bracketing the only way to have the better correction after having done the first pattern ?
thanks
SQ
correcting drift in a hold
Moderators: sky's the limit, sepia, Sulako, Right Seat Captain, lilfssister, North Shore
Never, ever do an instrument training flight without getting the winds aloft first - 3000 and 6000 will generally do.
Suggestion: use the speed of the wind aloft in knots for your outbound heading correction. It's simple, easy to remember, and the important thing is to not get blown downwind, which is what your instructor/examiner will try to arrange.
Suggestion: use the speed of the wind aloft in knots for your outbound heading correction. It's simple, easy to remember, and the important thing is to not get blown downwind, which is what your instructor/examiner will try to arrange.
There are more complex way to calaulate the drift angle but,
Unless it's direct crosswind or direct head/tailwind, I start with half of the upper wind speed for the outbound timing and heading.
20kts wind
20/2 = 10 degrees heading correction into the wind on outbound.
20/2 = 10 seconds added/subtracted from outbound timing, depending on headwind or tailwind on outbound leg.
Pretty good point to start for me anyways.
Unless it's direct crosswind or direct head/tailwind, I start with half of the upper wind speed for the outbound timing and heading.
20kts wind
20/2 = 10 degrees heading correction into the wind on outbound.
20/2 = 10 seconds added/subtracted from outbound timing, depending on headwind or tailwind on outbound leg.
Pretty good point to start for me anyways.
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Cat Driver
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Love it!Spokes wrote:When tracking the navaid inbound, note the drift. Then for the outbound double it. Works great for me. Shown to my by the good folks over at PROIFR.
for the timing in and outbound. take the error assciated with timing in bound vs. one minute and take 2/3 of it and apply it to out bound for 1 min inbound.
ie...
1:18 inbound... longer means headwind.
18 sec longer so take 2/3s of it and subract it from 1 min outbound
2/3 of 18=12
outbound for 1 min minus 12 .... 48 seconds
good_idea
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Cat Driver
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No, I have not flown small airplanes for many years (Except the Pitts and a few aerobatic types.)the G1000 is amazing have you tried it out?
But the Airbus and Boeings have glass and it makes life easy.
I use the Anywheremap for ferrying airplanes internationally and it is just like a mini EFIS.
The hardest thing about flying is knowing when to say no
After over a half a century of flying no one ever died because of my decision not to fly.
After over a half a century of flying no one ever died because of my decision not to fly.
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Cat Driver
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SQ
Some people do this weird thing with their thumb on the HI to figure out the entry, but ...
Draw the hold on your kneepad. Draw your track to it. Draw the wind.
Given the picture above, you should be able to able to figure out your hold entry and initial fudges for track and time on the outbound leg.
After a while, you don't need to draw the picture. This visualization skill is probably the most important skill of the IFR pilot. Being a biological auto-pilot is nice, and so is chasing needles, but you can see why GPS moving maps are so popular - they do the visualization for you.
There is one more skill that an IFR pilot needs to stay alive, and that's developing a healthy respect for the weather (CB's, icing, dewpoint).
Draw the hold on your kneepad. Draw your track to it. Draw the wind.
Given the picture above, you should be able to able to figure out your hold entry and initial fudges for track and time on the outbound leg.
After a while, you don't need to draw the picture. This visualization skill is probably the most important skill of the IFR pilot. Being a biological auto-pilot is nice, and so is chasing needles, but you can see why GPS moving maps are so popular - they do the visualization for you.
There is one more skill that an IFR pilot needs to stay alive, and that's developing a healthy respect for the weather (CB's, icing, dewpoint).
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SQ
