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SDZ Construction: 120mm Tank Cannon. Inter-service Resident Range Safety Course (Intermediate). 120mm Ammunition. Legend for 120mm Tank Cannon. Constructing 120mm Tank Cannon SDZ. Construct a 120mm tank cannon SDZ for that weapon firing the M830 HEAT-MP-T cartridge into steel.

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sdz construction 120mm tank cannon

SDZ Construction:120mm Tank Cannon

Inter-service Resident Range Safety Course (Intermediate)

slide2

120mm Ammunition

August 2003

constructing 120mm tank cannon sdz
Constructing 120mm Tank Cannon SDZ
  • Construct a 120mm tank cannon SDZ for that weapon firing the M830 HEAT-MP-T cartridge into steel.
  • Dimensions of the SDZ for this weapon system are given in DA-PAM 385-63, Chapter 12, Table 12-2.
  • First, plot the firing point, target, and then establish the gun target line.

August 2003

slide5
Plot the firing point.
  • Plot the target.
  • Establish the gun target line.

August 2003

slide6
From Table 12-2, find Distance X (steel).
  • Distance X =

6589m (ˆ6600m)

  • Annotate Distance X on the legend.

Distance X

August 2003

slide7

At the firing point, measure 5° from the left and right of the gun target line.

  • Draw tic marks as shown.

Distance X

August 2003

slide8

Dispersion

Area

  • To establish the lateral limits of the Dispersion Area, draw a straight line from the firing position through each tic mark out to Distance X.

Distance X

  • This completes the Dispersion Area.

August 2003

slide9

Dispersion

Area

  • For the Ricochet Area, on Table 12-5, find the measurement for Distance W (steel).
  • Distance W =

Distance X

600m

  • Lightly draw lines perpendicular to the limits of the Dispersion Area.

August 2003

slide10

Dispersion

Area

  • Draw tic marks at the measurement for Distance W on the lines just drawn.
  • Draw straight lines through the tic marks.

Distance X

August 2003

slide11

Dispersion

Area

P

P

  • On Table 12-2, find the Angle P.
  • Angle P =

12°

  • At the firing point, measure 12° from the left and right limits of the Dispersion Area.

Distance X

12°

  • Draw tic marks.

August 2003

slide12

Ricochet

Area

Dispersion

Area

  • Draw a straight line from the firing point through each tic mark just drawn.
  • This completes the Ricochet Area.

Distance X

  • Annotate the Ricochet Area on the legend.

12°

P

P

August 2003

slide13

Ricochet

Area

Dispersion

Area

  • From the firing point, scribe an arc between the left and right limits of the Ricochet Area. Use Distance X as the radius.

Distance X

Distance X

  • Erase any unnecessary lines.

August 2003

slide14

Ricochet

Area

Dispersion

Area

  • From the firing point, scribe an arc between the left and right limits of the Ricochet Area. Use Distance X as the radius.

Distance X

  • Erase any unnecessary lines.

August 2003

slide15

Ricochet

Area

Dispersion

Area

  • On Table 12-2, find the measurement for Area A.
  • Area A =

1,125m

(ˆ1,150m)

  • Lightly draw lines perpendicular to the limits of the Ricochet Area.

Distance X

  • Draw tic marks at the measurement for Area A.

August 2003

slide16

Ricochet

Area

Dispersion

Area

  • Draw straight lines through the tic marks.
  • On Table 12-2, find the measurement for Area B.

Distance X

  • Area B =

1,125m

(ˆ1,150m)

  • Lightly draw a line extending the gun target line the measurement of Area B.

August 2003

slide17

Ricochet

Area

Dispersion

Area

  • Draw a tic mark at the measurement for Area B.
  • Place the needle of the compass at the firing point and scribe an arc through the tic mark between the limits of Area A.
  • From the firing point, measure 25° to the right and left of the limits of the Ricochet Area.

25°

August 2003

slide18

Area B

Area A

Ricochet

Area

Dispersion

Area

  • Draw tic marks.
  • From the firing point, draw straight lines out through the tic marks as shown.
  • This completes Areas A and B.

Distance X

  • Erase any unnecessary lines.

25°

August 2003

slide19

Area B

Area A

Ricochet

Area

Dispersion

Area

  • Draw tic marks.
  • From the firing point, draw straight lines out through the tic marks as shown.
  • This completes Areas A and B.

Distance X

  • Erase any unnecessary lines.

August 2003