TUBE LAUNCHED, OPTICALLY TRACKED, WIRE GUIDED MISSILE

G-71. When firing from either a hasty or improved fighting position, the gunner must take into consideration obstructions directly to his front, to his rear, and to the sides of the fighting position.

FIRING LIMITATIONS

G-72. Some conditions may limit the firing and engagement capabilities of the TOW. The following information should be considered before engaging targets─

  • Firing over bodies of water. Maximum and limited range firing over water varies by missile type. If the range is less than 1100 meters, the missile’s range is not affected. However, if it is wider than 1100 meters it can reduce the range of the TOW. A TOW position should be as high above and as far back from the water as the tactical situation allows. The squad or section leader should analyze his sector as soon as the position is occupied to determine if water will affect the employment of the TOW. Signals being sent through the command-link wires are shorted out when a large amount of wire is submerged in water.
  • Firing over electrical lines. If the command-link wires make contact with a live high-voltage power line, personnel can be injured or control of the missile could be lost. The launcher electronics also may be damaged. In addition to power lines, other high-voltage sources include street cars, electric train ways, and some moving target trolleys on training ranges.
  • Firing in windy conditions. Gusty, flanking, or quartering winds can cause the launch tube to vibrate and spoil the tracking performance. The effect is similar to driving in a strong crosswind. Strong winds can move the missile around during flight, but as long as the crosshairs are kept on the center mass of the target, the weapon system can compensate for wind effects.
  • Firing through obscurants and area fires. Smoke can obscure the LOS and hide the target when using the daysight tracker. A smooth tracking rate should be maintained as the target disappears into an obscurant cloud so the missile will still be on target or close as the vehicle goes out the other side of the obscurants cloud. (This technique should be practiced during field tracking exercises.) A fire can burn through the command-link wire, causing loss of control of the missile.
  • Firing From bunkers and buildings. In accordance with DA Pamphlet 385-63, TOWs will not be fired from buildings, bunkers, or within 100 meters of a vertical or nearly vertical backstop without the approval of the commanding general.
  • Clearance requirements. The TOW muzzle must have at least nine inches of clearance at the end of the launch tube so the wings and control surfaces of the missile will not be damaged when they extend after clearing the launch tube. The muzzle of the launch tube must extend beyond enclosures, window sill, or aperture. It also must have at least 30 inches of clearance between the LOS and obstructions from 500 to 900 meters downrange. 30-inch LOS clearance ensures a high probability the missile will not strike the ground on the way to the target. (See figure G-34.).
  • Firing TOW BB missile. The missile warhead arms after launcher is between 35 and 65 meters. There is a remote possibility of a TOW BB missile airburst 43 meters from launch platform. The probability of an inadvertent warhead detonation resulting in shrapnel injury to an exposed crewmember also is remote. The crew is protected from shrapnel during firing from Stryker ATGM vehicles. The TOW BB currently is not fired from a HMMWV.

TOW missile clearance requirements

Figure G-34. TOW missile clearance requirements

SURFACE DANGER ZONE

G-73. The surface danger zones for firing ranges consists of a firing area, a target area, impact area, and danger areas surrounding these locations. (See figure G-35.) An additional area for occupation by personnel during firings also may be required. (Refer to DA Pamphlet 385-63 for more information.) The shape and size of the surface danger zone varies with the type of missile or rocket being fired─

  • Primary danger area. The primary danger area is a 90-degree cone with a 50-meter radius. The apex of the cone is centered at the rear of the missile launcher. Serious casualties or fatalities are likely to occur to anyone in the area during firing. Hazards include launch motor blast, high noise levels, overpressure, and debris.
  • Caution area 1. The caution area 1 extends in a radial pattern from each side of the primary danger area to the firing line with a radius of 50 meters. Permanent hearing damage could occur to personnel without adequate hearing protection in this area during firing. The hazards are high noise levels and overpressure.
  • Caution area 2. The caution area 2 is an extension of the primary danger area with the same associated hazards and personnel protection required. The radius of this area is 75 meters.
  • 200-meter zone. The 200-meter zone is the danger area for aerial firings 15.25 meters or more above ground level.

Surface danger zones for firing basic TOW, TOW 2A, and TOW 2B missiles

Figure G-35. Surface danger zones for firing basic TOW, TOW 2A, and TOW 2B missiles

FIRING ANGLE LIMITATIONS

G-74. Azimuth and elevation firing angles are limited by the traversing unit, the vehicle, and other external restrictions. All elevation angles are referenced to the horizontal plane of the traversing unit. Azimuth angles are referenced to the long axis of the vehicle and depend on whether the launch tube points over the front or rear of the vehicle. The other reference line is the LOS from the TOW to the target.

G-75. When the TOW is tripod-mounted, a 360-degree lateral track is possible, because the traversing unit is not restricted in azimuth. Mechanical stops limit the elevation angle coverage to 20 degrees below and 30 degrees above the horizontal plane. Before the missile is fired, the LOS angle should be estimated at the expected time of launch and throughout the expected missile flight time. The firing position should be changed or a different target selected if an expected LOS angle exceeds the firing limitation angle.

G-76. Firing angle limitations of TOW carriers are as illustrated in figure G-36.

M1121-mounted TOW firing angle limitations

Figure G-36. M1121-mounted TOW firing angle limitations