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SDZ Construction: Single Firing Point, Single Target

SDZ Construction: Single Firing Point, Single Target. Inter-service Resident Range Safety Course (Intermediate). SDZ Construction Fundamentals. All SDZs, regardless of complexity, are drawn from a point or points of reference.

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SDZ Construction: Single Firing Point, Single Target

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  1. SDZ Construction:Single Firing Point, Single Target Inter-service Resident Range Safety Course (Intermediate)

  2. SDZ Construction Fundamentals • All SDZs, regardless of complexity, are drawn from a point or points of reference. • To construct an accurate and precise SDZ, you will need the following: • Compass for drawing circles and arcs • Protractor for measuring angles • Plotting scale for measuring distances • Fine-point pencil for drawing accuracy August 2003

  3. Mils Scale Degrees Scale Index August 2003

  4. The M2 may be mounted on ground mounts and most vehicles as an anti-personnel and anti-aircraft weapon. August 2003

  5. Small Arms Legend (Cone) August 2003

  6. Constructing a Cone-Shaped SDZ • Construct a cone-shaped SDZ for the M2 .50 MG using M2 ball ammo. • Map scale: 1:50,000. • Distance X for this weapon/ammo is given in DA-PAM 385-63, Appendix B, Table B-1. • Cone-shaped SDZ dimensions are shown in DA-PAM 385-63, Figure 6-1. August 2003

  7. What’s the Gun Target Line? • The Gun Target Line, or GTL, is a line drawn between the firing point and the target. It is also referred to as the line of fire. August 2003

  8. Gun Target Line Firing Point • Plot the firing point. • Plot the target. • Establish the gun target line. August 2003

  9. What is Distance X? • Distance X is the maximum distance a projectile, to include guided missiles and rockets, will travel when fired or launched at a given quadrant elevation with a given charge or propulsion system. August 2003

  10. From Table B-1, find Distance X M2 ball. • Distance X = 6500m • Annotate Distance X on the legend. Distance X August 2003

  11. Determine the Dispersion Area • The Dispersion Area is the area within the Surface Danger Zone located between the gun target line and the Ricochet Area. • This area accounts for human error, gun or cannon tube wear, propellant temperature, etc. August 2003

  12. At the firing point, measure 5° with a protractor from the left and right of the gun target line. • Draw tic marks. Distance X 5° 5° August 2003

  13. Dispersion Area Gun Target Line • To establish the 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. 5° 5° August 2003

  14. Ricochet Area • The Ricochet Area is located to the left and right of the Dispersion Area and contains projectiles after they make contact with the target medium. August 2003

  15. Dispersion Area • At the firing point, measure 5° with a protractor from the left and right limits of the Dispersion Area. • Draw tic marks. Distance X 5° 5° August 2003

  16. Dispersion Area Ricochet Area 5° • To establish the lateral limits of Ricochet Area, draw a straight line from the firing position through each tic mark out through Distance X. Distance X • This completes the Ricochet Area. 5° August 2003

  17. Area A • Area A is the secondary danger area, or buffer zone, that laterally parallels the Ricochet Area and contains fragments, debris, and components from frangible or explosive projectiles and warheads functioning on the right or left edge of the Ricochet Area. • Area A measurement for direct-fire small arms without explosive projectiles is 100 meters. August 2003

  18. Dispersion Area Ricochet Area • To establish Area A, lightly draw lines perpendicular to the right and left limits of the Ricochet Area. Distance X • Draw tic marks at 100 meters. • Draw lines parallel to the limits of the Ricochet Area through the tic marks. August 2003

  19. Dispersion Area Ricochet Area • At the firing point, measure 30° with a protractor from the left and right limits of the Ricochet Area. • Draw tic marks. Distance X • Draw a straight line from the firing point through each tic mark. 30° 30° August 2003

  20. Area A Dispersion Area Ricochet Area 30° • From the firing point, scribe an arc between the left and right limits of Area A. Use Distance X as the radius. Distance X • This completes Area A. • Annotate Area A on the legend. • To complete the SDZ, erase all unnecessary lines. 30° August 2003

  21. Area A Dispersion Area Ricochet Area • From the firing point, scribe an arc between the left and right limits of Area A. Use Distance X as the radius. Distance X • This completes Area A. • Annotate Area A on the legend. • To complete the SDZ, erase all unnecessary lines. August 2003

  22. Small Arms Legend (Cone) August 2003

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