Winds aloft
Guest
Posts: n/a
God almighty. There are some interesting methodologies in this thread.
Do an orbit while maintaining a constant IAS and monitoring your GPS. You need three pieces of information.
As you orbit, watch your groundspeed tick down until you reach a heading where it pauses, and then starts climbing again. This is the heading which gives you your lowest groundspeed. This is where the wind is coming from. Remember what the groundspeed was at this point. Keep turning and note the groundspeed when you are 180 degrees out from where the wind is coming from. This will also be your highest groundspeed. Subtract the lowest groundspeed from the highest groundspeed and divide by two. This is how strong the wind is.
Next, lean down to the loadmaster or the jumper who thinks he is spotting your aeroplane and yell: the wind is xx knots from xxx, you little prick. Then go back to flying your aeroplane and keep ignoring directions from the skydivers.
av8trflying - check your PMs
Do an orbit while maintaining a constant IAS and monitoring your GPS. You need three pieces of information.
As you orbit, watch your groundspeed tick down until you reach a heading where it pauses, and then starts climbing again. This is the heading which gives you your lowest groundspeed. This is where the wind is coming from. Remember what the groundspeed was at this point. Keep turning and note the groundspeed when you are 180 degrees out from where the wind is coming from. This will also be your highest groundspeed. Subtract the lowest groundspeed from the highest groundspeed and divide by two. This is how strong the wind is.
Next, lean down to the loadmaster or the jumper who thinks he is spotting your aeroplane and yell: the wind is xx knots from xxx, you little prick. Then go back to flying your aeroplane and keep ignoring directions from the skydivers.
av8trflying - check your PMs
Join Date: Dec 2005
Location: Perth
Posts: 176
Likes: 0
Received 0 Likes
on
0 Posts
For a real lazy way to determine HW or TW whilst on climb so as to pick the most favorable wind, try the following, It is an expansion of Pile it and others principal.
On your note pad/knee board or whatever right down a permanent note with your IAS v TAS for each 1000' level.
Eg.
IAS TAS
1000' 100 102
2000' 100 103
3000' 100 105
4000' 100 107
5000' 95 104
6000' 95 106
7000' 95 107
8000' 90 104
9000' 90 106
10000' 90 108
So now as you climb, peg your IAS accurately and you can then X check your GS against the written done TAS figure. The reducing IAS is simply an adjustment to maintain optimum climb performance. You can even jot down the GS at a particular level as you continue the climb hoping to improve the GS.
The given IAS above are just generic and the TAS is close but not dead accurate, a reference note for ISA variations is handy to.
Done once and then it's just a glance at the table there after.
Hope it helps
On your note pad/knee board or whatever right down a permanent note with your IAS v TAS for each 1000' level.
Eg.
IAS TAS
1000' 100 102
2000' 100 103
3000' 100 105
4000' 100 107
5000' 95 104
6000' 95 106
7000' 95 107
8000' 90 104
9000' 90 106
10000' 90 108
So now as you climb, peg your IAS accurately and you can then X check your GS against the written done TAS figure. The reducing IAS is simply an adjustment to maintain optimum climb performance. You can even jot down the GS at a particular level as you continue the climb hoping to improve the GS.
The given IAS above are just generic and the TAS is close but not dead accurate, a reference note for ISA variations is handy to.
Done once and then it's just a glance at the table there after.
Hope it helps
