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View Full Version : Gunnery 102 - Lead

JRJacobs
11-22-2007, 05:42 PM
Now it gets a little harder. Good news, bad news.

good news - doesn't mater the size of the plane.
bad news - you now need to compute TWO vectors that change with angle and speed

Good News first
note
your aiming at the junction of the wing and the plane
you're diving on the target at 45 degrees
you're diving from his 6 o'clock

i16 just beyond the 2nd stadia line outside the ring
IL2 just beyond the 2nd stadia line outside the ring
Pe2 just beyond the 2nd stadia line outside the ring

SEE same lead regardless of size

1) i16 just beyond the 2nd stadia line outside the ring

2) IL2 just beyond the 2nd stadia line outside the ring

3) Pe2 just beyond the 2nd stadia line outside the ring

45 degrees up or down - on his 6

1) 225 Kph - Junction 1/3 way between 1st and 2nd Stadia line outside of ring

2) 250 Kph - Junction 2/3 way between 1st and 2nd Stadia line outside of ring

3) 275 Kph - just past 2nd Stadia line outside of ring

4) 300 Kph - Junction 1/2 way between 2nd and 3rd Stadia line outside of ring

45 degrees up or down - He's at 7 o'clock of your pipper
Same distance

1) 225 Kph - Junction 1/3 way between 1st and 2nd Stadia line outside of ring

2) 250 Kph - Junction 2/3 way between 1st and 2nd Stadia line outside of ring

3) 275 Kph - just past 2nd Stadia line outside of ring

4) 300 Kph - Junction 1/2 way between 2nd and 3rd Stadia line outside of ring

45 degrees up or down - You're closing in 45 degrees from his flank (offset) - He's at 6 o'clock of your pipper
A word about offset (or Angle off Tail (AoT)) no mater what angle you approach at, if you make him fly through the center of your sight, offset is automatic
in these pictures - make the green line (his fuselage) intersect the center of the sight and offset is calculated

1) 225 Kph - Junction 1/3 way between 1st and 2nd Stadia line outside of ring

2) 250 Kph - Junction 2/3 way between 1st and 2nd Stadia line outside of ring

3) 275 Kph - just past 2nd Stadia line outside of ring

4) 300 Kph - Junction 1/2 way between 2nd and 3rd Stadia line outside of ring

Lead changes with speed and angle
here are some examples from different views all at 275Kph

Hope some of this helps you to visualize WHERE you need to aim

all screen caps are from the program Sniper's Corner_2.xls by Bruno & Abraxa

msalama
11-22-2007, 10:00 PM
Thank you Sir. A great visualisation of the problem right there. Much appreciated. S!

JRJacobs
11-23-2007, 11:11 AM
bump number 1
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