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RANGE DETERMINATION

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SAFETY:

RISK ASSESMENT:

ENVIRONMENTAL CONSIDERATIONS:

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TLO LIST THE METHODS USED TO ESTIMATE

RANGE TO A TARGET

INCORPORATE THE VARIOUS TECHNIQUES LEARNED IN RNG. DETR. ON FUTURE GUNNERY AND TRAINING MISSIONS ENABLING THE STUDENT TO ACCOMPLISH THE MISSION.

PART OF THE GNRY. EXAM. MUST ACHIEVE

80 % OR BETTER.

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At times, because of the tactical situation, the BC or gunner may have to estimate range. These methods are used only to estimate range.

• Flash to bang method

• 100 meter unit-of-measure method

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100 Meter Unit Of Measure Method

100 M

200 M

300 M

4OO M

500 M

* The BC can accuratelydetermine range out to 500 meters using this method with practice.

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Flash to Bang Method

Using this method, the BC determines the time it tookfrom the moment the flash was determined to the timethe Bang occurred. Then apply the following formula;

Second x 350 ( speed of sound ) = distance

Ex- 3 seconds from flash to bang observed by BC;

3 sec x 350 fps = 1050meters

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CONDITIONS THAT MAKETARGETS APPEAR CLOSER

BRIGHT, CLEAR DAY

SUN IN FRONT OF THE TARGET

HIGH ELEVATIONS

LARGE TARGETS

BRIGHT COLORS(WHITE,RED,YELLOW)

CONTRAST

LOOKING ACROSS RAVINES, HOLLOWS,RIVERS, DEPRESSIONS.

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CONDITIONS THAT MAKETARGETS APPEAR FARTHER

FOG, RAIN, HAZE, SMOKE, DUSK, DAWN

SUN BEHIND TARGET

LOW ELEVATIONS

SMALL TARGETS

DARK TARGET COLORS(BROWN, BLACK,GREEN)

CAMOUFLAGED TARGETS(PAINTED,NETTING)

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BRADLEY COMMANDER• Bradley eyesafe laser range finder• M1 laser range finder• Laser range finder (AN/GVS-5)

• ISU horizontal ranging stadia

• ISU lead lines

• Auxiliary sight

• Binoculars

RANGE DETERMINATION METHODS

• Reference material

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GUNNER

RANGE DETERMINATION METHODS

• Bradley eyesafe laser range finder

• ISU horizontal ranging stadia

• ISU lead lines• Auxiliary sight

• Range card

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MEASURING THE TARGET WITHTHE ISU RETICLE

B

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HORIZONTAL RANGING STADIA

Choking the hull

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HORIZONTAL RANGING STADIA

Choking the turret

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FRONT AND FLANK TARGET VIEWS

*General Rule of Thumb;

If you see more of the front, it’s a frontal view, more of the flank, it’s a flank view.

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Front and Flank views

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5 MILS

6.75 METERS

Range determination using binoculars

The BMP is 6.75 meters long (W). Using binoculars, the BC determines that the BMP measures 5 mils in length.

Wm

= R

Substitute the two known values for W and mW

m= 6.75

51.35=

Since R is expressed in thousands of meters, multiply by 1,000; and round off to the nearest tenth, for example: .35 = .4; .31 = .30 1.40 x 1,000 = 1,400 meters, the range to the BMP.

5 4 3 21

0

10

15

20

2 4 5

5

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MILSX 1000 = RANGE(METERS)

WIDTH IS THE KNOWN SIZE OF THE VEHICLE

MILS IS MEASURED WITH A RETICLE(BINOCULARS OR ISU)

WIDTH(METERS)

MIL-RELATION FORMULA

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RETICLE LEAD LINES

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RETICLE LEAD LINES

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TOW MAXIMUM ENGAGEMENT RANGE

Estimate TOW maximum engagement range

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AUXILIARY SIGHTTHE AUXILIARY SIGHT HAS A STADIA THAT ALLOWS BOTHRANGE ESTIMATION AND APPLICATION OF THE CORRECTSUPER ELEVATION BASED ON RANGE.

-THIS SYSTEM IS USED TO DETERMINE THE RANGEAND TO ENGAGE THE FRONTAL OR FLANK VIEWOF A TARGET.

-THE M792(HEI-T) SCALE GOES TO 3,200 METERS.

-THE M791(APDS-T) SCALE GOES TO 3,400 METERS.

-COAX FIRING IS CONDUCTED USING THE SAME METHOD

AS M792(HEI-T), USING THE M792 STADIA LINES.

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Flank View

AUXILIARY SIGHT FLANK VIEW

DETERMINES RANGES FROM 400 - 3400M

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Frontal view

AUXILIARY SIGHT FRONTAL VIEW

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SESSION SUMMARY

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TLO: LIST THE METHODS USED TO ESTIMATE

RANGE TO A TARGET

INCORPORATE THE VARIOUS TECHNIQUES LEARNED IN RNG. DETR. ON FUTURE GUNNERY AND TRAINING MISSIONS ENABLING THE STUDENT TO ACCOMPLISH THE MISSION.

PART OF THE GNRY. EXAM. MUST ACHIEVE

80 % OR BETTER.

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ELO:

EFFECTIVELY DETERMINE RANGE USING ALL AVAILABLE ASSETS GIVEN IN A

MECHANIZED BFV EQUIPED UNIT.

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CHECK ON LEARNING?

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RANGE DETERMINATION