SDZ Construction: Aviation Rocketry Inter-service Resident Range Safety Course (Intermediate)
SDZ Construction:Aviation RocketryInter-service Resident Range Safety Course (Intermediate)
August 2003
The 2.75 FFAR (Folding Fin Aircraft Rocket) has an air-to-ground role and is fired from fixed and rotary wing aircraft. Its fuzing and warhead performance characteristics make it suitable for low-speed aircraft.
August 2003
AH-64 Apache Helicopter
August 2003
August 2003
August 2003
Weapon:
Ammo Type:
Direction of Fire:
Launcher Quadrant Elevation:
Aircraft Pitch:
Mode of Fire:
Distance X:
Legend for Aviation Gunnery (Rockets)Area A:
Area B:
Map Scale:
Map Sheet:
Map Series:
Map Edition:
Date:
Name:
August 2003
Constructing the SDZConstruct an SDZ for the 2.75 FFAR rocket with a MK66 motor fired into steel from an aircraft with a pitch -5° and launcher quadrant elevation of 95 mils.
Dimensions of the SDZ parameters for this weapon system are given in Chapter 13, pages 13-5 and 13-6.
August 2003
Constructing the SDZFor aerial rockets, the launch angle in degrees, equals launcher QE in mils divided by 17.7 plus the aircraft pitch in degrees. For articulating launchers, use the maximum articulated QE possible plus the aircraft pitch in degrees.
August 2003
Launch Angle is computed as follows:Launch angle (in degrees) =
+ Aircraft Pitch (in degrees)17.7
Launcher QE (in mils)
Launcher QE = 95 mils
17.7= 5.36° (ˆ6°)
6° - 5° = 1° (ˆ2°) Launch angle = 2°
August 2003
Establish the right and left lateral limits.
Plot the target.
Locate the Cease-Fire Disarm Line.
Locate the Start-Fire Safe-Arm Line.
Start-FireSafe-Arm Line
Cease-Fire Disarm Line 1000m
August 2003
From Table 13-1, find Distance X as measured from the cease-fire disarm line.
Distance X = 4500m
Annotate Distance X on the legend.
At the start-fire line, measure 5° with a protractor from the left and right lateral limits to establish the Dispersion Area.
5°5°
Start-FireSafe-Arm Line
Cease-Fire Disarm Line 1000m
Dis
tan
ce X
August 2003
Draw tic marks as shown.
To establish the Dispersion Area, draw a straight line from the firing position through each tic mark out through Distance X.
This completes the Dispersion Area.
5°5°
DispersionArea
Start-FireSafe-Arm Line
Cease-Fire Disarm Line 1000m
Dis
tan
ce X
August 2003
At the start-fire line, measure 10° with a protractor from the left and right limits of the firing line to establish the Ricochet Area.
Draw tic marks as shown.
To establish the Ricochet Area, draw a straight line from the firing position through each tic mark out through Distance X.
10°10°1000m
DispersionArea
Start-FireSafe-Arm Line
Cease-Fire Disarm Line 1000m
Dis
tan
ce X
August 2003
This completes the Ricochet Area.
At the left limit of the start-fire line, scribe an arc between the left limit of the Ricochet Area and the left lateral limit. Use Distance X as the radius. Do the same on the right side.
10°10°
DispersionArea
RicochetArea
Start-FireSafe-Arm Line
Cease-Fire Disarm Line 1000m
Dis
tan
ce X
August 2003
At Distance X, draw a straight line between the right and left limits of the start-fire line.
Erase any unnecessary lines.
DispersionArea
RicochetArea
Start-FireSafe-Arm Line
Cease-Fire Disarm Line 1000m
Dis
tan
ce X
August 2003
The measurement for Area A = 300m.
Lightly draw lines perpendicular to the limits of the Ricochet Area.
DispersionArea
RicochetArea
Start-FireSafe-Arm Line
Cease-Fire Disarm Line 1000m
At Distance X, draw a straight line between the right and left limits of the start-fire line.
Erase any unnecessary lines.
Dis
tan
ce X
August 2003
Draw tic marks at the measurement for Area A.
Draw straight lines parallel to the limits of the Ricochet Area through the tic marks just drawn. Dispersion
Area
RicochetArea
Start-FireSafe-Arm Line
Cease-Fire Disarm Line 1000m
Dis
tan
ce X
August 2003
At the firing position, measure 25° with a protractor from the left and right limits of the Ricochet Area to establish the Area A.
Draw tic marks.
25°25°
DispersionArea
RicochetArea
Start-FireSafe-Arm Line
Cease-Fire Disarm Line 1000m
Dis
tan
ce X
August 2003
From the start-fire, draw straight lines through the tic marks just drawn.
The measurement for Area B = 300m
Lightly draw lines that extend the firing lines from Distance X by the measurement for Area B. 25°25°
DispersionArea
RicochetArea
Start-FireSafe-Arm Line
Cease-Fire Disarm Line 1000m
Dis
tan
ce X
August 2003
From the right and left limits of the firing line, scribe an arc from the right and left limits of Area A using the measurement for Area B as the radius.
At the measure-ment for Area B, connect the right and left limits of the firing lines with a straight line.
25°25°
DispersionArea
RicochetArea
Start-FireSafe-Arm Line
Cease-Fire Disarm Line 1000m
Dis
tan
ce X
August 2003
DispersionArea
RicochetArea
Start-FireSafe-Arm Line
Cease-Fire Disarm Line 1000m
25°25°
This completes Areas A and B.
Dis
tan
ce X
August 2003
DispersionArea
RicochetArea
Area A
Area B
Start-FireSafe-Arm Line
Cease-Fire Disarm Line 1000m
To complete this portion of the SDZ, erase all unnecessary lines.
This completes Areas A and B.
Annotate Areas A and B on the legend.
Dis
tan
ce X
August 2003
This SDZ has a Maneuver-Holding Area which will now be shown in detail.
To complete this portion of the SDZ, erase all unnecessary lines.
DispersionArea
RicochetArea
Maneuver-HoldingArea
60°
This completes Areas A and B.
Annotate Areas A and B on the legend. Area A
Area B
Start-FireSafe-Arm Line
Cease-Fire Disarm Line 1000m
Dis
tan
ce X
August 2003
In this illustration, the Maneuver- Holding Area extends 1km behind the start-fire line. This distance is variable.
Extend the firing lines back the distance of the Maneuver-Holding area.
At the firing lines, measure back 60°.
60° 60°
1km
August 2003
1km
Draw tic marks.
Draw straight lines through the tic marks. 60° 60°
August 2003
From the firing line, draw arcs out to the limits of the Maneuver-Holding Area.
This completes the Maneuver-Holding Area.
60° 60°
Erase any unnecessary lines.
1km
Close the area as shown.
August 2003
From the firing line, draw arcs out to the limits of the Maneuver-Holding Area.
This completes the Maneuver-Holding Area.
Erase any unnecessary lines.
1km
August 2003
Weapon:MK66 Rocket Motor
Ammo Type: M151 Warhead
Direction of Fire: 360 grid
Launcher Quadrant Elevation:
95 mils
Aircraft Pitch: -5°
Launch Angle: 2°
Mode of Fire: Running fire
Distance X: 4500m
Legend for Aviation Gunnery (Rockets)Area A: 300m
Area B: 300m
Map Scale: 1:50,000
Map Sheet:
Map Series:
Map Edition:
Date:
Name: