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APPENDIX B

DRAGON GUNNERY TRAINER

This appendix provides technical data for the Dragon gunnery trainer (DGT) and discusses its components and limitations. The DGT and related accessories are shipped and stored in two shipping containers, one for the instructor station and one for the student station (Figure B-1).

Figure B-1. Dragon gunnery trainer.

Figure B-1. Dragon gunnery trainer.

Section I. INSTRUCTOR STATION

The instructor station consists of a console, a headset with microphone, a mouse, two power cables, and a shipping container (Figure B-2).

Figure B-2.  Components of instructor station.

Figure B-2. Components of instructor station.

B-1. INSTRUCTOR CONSOLE

The trainer programs the DGT instructor console (Figure B-3), which has two carrying handles.

Figure B-3.  Instructor console.

Figure B-3. Instructor console.

a. Monitor. The instructor console displays the mission scenario on its own monitor as well as on the student viewer. This allows the trainer to watch the student's actions during mission execution. Afterwards, the trainer can play back and evaluate the student's performance.

b. Front Panel. From the front panel of the instructor console, the trainer controls the volume of his own and the student's headsets (INSTRUCTOR VOLUME and STUDENT VOLUME). The toggle switch on the front panel has three settings:

(1) MICROPHONE/ALL. This setting allows both trainer and student to hear the DGT mission.

(2) ONLY. This setting allows only the trainer to hear the mission.

(3) OFF. This setting is self-explanatory.

c. Rear Panel. The rear panel of the instructor console contains the power switch, indicators, console identification data, fan vents, and power and electronic data transmission receptacles (jacks).

(1) ON/OFF Switch and Indicator. The ON/OFF switch controls power to the instructor console; when the switch is set to ON, the indicator light comes on.

(2) Hour Meter Indicator. The hour meter shows how long the trainer has been in use.

(3) Name Plate. The nameplate identifies equipment.

(4) Fan Assembly. The fan assembly filters and circulates air through the instructor console.

(5) Receptacles. The receptacles (jacks) shown in Table B-1 are located on the rear panel of the instructor console:

J01

Data output to the printer.

J02

Signal interface with the student station sight assembly.

J03

Power input from a 110VAC or 220VAC source.

J04

Power output to the student station sight assembly.

J05

Data input from the mouse.

J06
J07
Audio signal input from and output to the headset/microphone (phone jack).

J08

Power output to the printer.

Table B-1. Receptacles (jacks) on rear panel of instructor console.

d. Media. Each DGT comes with its own set of four floppy disks (3.5 inch) and two videodisks (12 inch) (Figure B-4).

Figure B-4. DGT media.

Figure B-4. DGT media.

(1) Floppy Disks. These are standard 3.5-inch floppy disks.

(a) Program Disk. This disk contains the DGT simulation software.

(b) Diagnostic Disk. This disk contains the self-test for the DGT.

(c) Mission Data Disks. Each of these two numbered floppy disks corresponds to one of the similarly marked 12-inch videodisks.

(2) Videodisks. Two 12-inch videodisks store the DGT's audiovisuals. Each is numbered and color-labeled like one of the two mission data disks. Each videodisk comes in a protective jacket.

B-2. HEADSET-MICROPHONE

The instructor uses the standard communication headset with boom microphone (Figure B-5). This text will simply refer to "the headset." The headset allows the trainer to hear the audio portion of the simulation and to feed back instructions to the student. The headset's 6-foot long cable has two phone plugs that plug into jacks on the instructor console.

Figure B-5. Headset, mouse, and cables.

Figure B-5. Headset, mouse, and cables.

B-3. MOUSE

The mouse (Figure B-5) is a hand-controlled device the trainer uses to move the cursor on the video monitor. Using the mouse, the trainer controls the cursor, selects options, and controls exercises. To select an option, the instructor positions the cursor on it and clicks the left mouse button once (the right button does not work with this program). The connector on the mouse's 4-foot long cable plugs into a jack on the instructor console.

B-4. POWER CABLES

The DGT comes with two power cables (Figure B-5): one for use with 110VAC power (cable W2) and the other for use with 220VAC power (cable W1). Each is 8 feet long.

B-5. INSTRUCTOR STATION SHIPPING CONTAINER

Instructor station shipping containers (Figure B-6) are made from olive drab-colored polyethylene. Soldiers can stack these containers four deep. Each has specially shaped inserts to prevent damage to the components. The shipping container resists dust and water. The base and cover each have two carrying handles, one on each end. The container has four latches on each side and three latches along each end.

Figure B-6.  Instructor console shipping container.

Figure B-6. Instructor console shipping container.

a. The container bears the stenciled message on each end in two places: CAUTION, 198 POUNDS, 4-MAN LIFT (MALE ONLY).

b. The shipping container has an identification number and a part number stenciled on the right side of the base along with an arrow icon: REUSABLE CONTAINER P/N 13363801.

c. The instructor station identification and part number are stenciled on the top of the container cover: INSTRUCTOR STATION DRAGON/DRAGON INDOOR P/N 13363800. This part number includes the instructor station and shipping container.

d. The caution HANDLE WITH CARE, REUSABLE CONTAINER is stenciled on both ends of the base.

Section II. STUDENT STATION

The student station consists of the Dragon unit, the weight assembly, the student headset, a special-purpose cable, the student station's shipping container, disks, and an operator's manual (Figure B-7).

Figure B-7.  Student station components.

Figure B-7. Student station components.

B-6. DRAGON UNIT

The Dragon unit (Figure B-8) consists of a sight assembly, bipod assembly and retaining strap, and launcher assembly. The student views the mission through the sight assembly. The retaining strap secures the bipod assembly during storage. The bipod assembly supports the launcher and sight assemblies. The launcher assembly simulates the Dragon launch tube.

Figure B-8.  Dragon unit.

Figure B-8. Dragon unit.

a. Sight Assembly. The DGT sight assembly (Figure B-9) operates as either the daysight or nightsight, depending on the mission loaded at the instructor console. The sight displays the mission visual signals. The sight assembly attaches to the Dragon launch assembly.

Figure B-9.  Sight assembly.

Figure B-9. Sight assembly.

(1) The sight assembly has a daysight grip, a switch to select the daysight or nightsight, an eyepiece, a brightness control (BRT), a contrast control (CTRS), a sight focus ring, a thermal sight grip, and a headset jack. The eyepiece simulates both the daysight and nightsight eyepieces.

(2) On its right side (Figure B-10), the sight assembly has a safety and a right-hand trigger grip. Before the student can pull the trigger, he must first depress and hold the safety with his thumb.

Figure B-10.  Sight assembly—right side.

Figure B-10. Sight assembly—right side.

(3) The sensor port, power connectors, video receptacle, and recessed analog, digital, and audio jacks are located on the rear panel of the sight assembly (Figure B-11). The trainer may record launch tube movements from the reflector assembly via a sensor port. A CAUTION label designates the sight assembly as a sensitive electronic device.

Figure B-11.  Sight assembly—rear panel.

Figure B-11. Sight assembly—rear panel.

b. Bipod Assembly. The bipod assembly (Figure B-12), which supports the launcher and sight assemblies, attaches to the front end of the launcher assembly.

Figure B-12. Bipod and launcher.

Figure B-12. Bipod and launcher.

c. Launcher Assembly. This assembly houses the pull-down sensor (Figure B-12). The sensor measures the force with which the student is pulling down on the launch tube. The weight-drop assembly and bipod attach to the launcher assembly.

B-7. WEIGHT ASSEMBLY

The weight assembly (Figure B-13) drops to simulate the effect that occurs when the Dragon missile leaves the launch tube. A pin in the center of the weight assembly attaches it to the rear of the launch tube. The weight assembly drops 0.6 seconds after the soldier depresses the trigger.

Figure B-13. Launcher and weight assembly.

Figure B-13. Launcher and weight assembly.

B-8. HEADSET

The headset (Figure B-14) allows the student to hear the instructor's commands as well as the audio portion of the mission. A 3-foot long cable and a headphone plug connect the headset to the sight assembly.

Figure B-14. Student headset.

Figure B-14. Student headset.

B-9. SPECIAL-PURPOSE CABLE

The molded yellow 12-foot (W3) special-purpose cable (Figure B-15) provides signal and power connections between the instructor console and the sight assembly.

Figure B-15.  Special-purpose cable.

Figure B-15. Special-purpose cable.

B-10. STUDENT STATION SHIPPING CONTAINER

The olive drab-colored, polyethylene, student station shipping containers (Figure B-16) have specially shaped inserts to protect the components from damage. The shipping containers resist dust and water, and they stack four deep. The container base has two carrying handles and three latches on each end and seven latches along each side (TM 9-1425-484-10).

Figure B-16.  Student station shipping container.

Figure B-16. Student station shipping container.

a. Ends. The lifting requirement, CAUTION: 195 POUNDS 4 PERSON LIFT (MALE ONLY), is stenciled on each end of the container.

b. Cover. The cover has the following labels:

(1) The part number for entire student station (including the shipping container): STUDENT STATION DRAGON INDOOR P/N 13364400.

(2) Part number for shipping container cover only: REUSABLE CONTAINER P/N 13364390.

(3) The warning HANDLE WITH CARE; REUSABLE CONTAINER.

(4) An arrow icon that shows which side goes upward.

c. Inside Cover. A mirror is located inside the cover of the student station shipping container.

.B-11. LIMITATIONS AND RESOURCE REQUIREMENTS

The DGT has certain limitations and requirements.

a. Limitations. The DGT—

(1) Requires an indoor location to protect it from humidity, blowing dust and sand, and extreme temperatures.

(2) Requires a trainer, a student, another person. The other person adjusts the bipod legs, replaces the weight assembly, and supports the DGT between firings.

(3) Requires an X-feet wide by Y-feet tall mirror. (If the one in the cover of the student station shipping container breaks or is missing, any mirror this size may be substituted.)

b. Electrical Requirements. The DGT—

(1) Requires grounded (three-pronged) extension cords, because its power cables, which are 96 inches (8 feet) long, may be too short to reach the appropriate outlet.

(2) Requires one of the following electrical outlets:

  • 110VAC 1 Phase 60 Hertz.

  • 220VAC 1 Phase 50 Hertz.

c. Environmental Requirements. Table B-2 shows the environmental requirements for the Dragon.

 

LOWEST

HIGHEST

Operating Temperature

5.0 degrees Celsius 35.0 degrees Celsius
41.0 degrees Fahrenheit 98.0 degrees Fahrenheit

Storage Temperature

-34.4 degrees Celsius 62.8 degrees Celsius
-30.0 degrees Fahrenheit 145.0 degrees Fahrenheit
Humidity 20 percent 80 percent

Table B-2. Environmental requirements for the Dragon.

B-12. OPERATION AND FUNCTION

The trainer programs the target. Using the DGT mouse and controls, he selects a target and its missions. He also chooses from several options that affect the target's level of difficulty. The target will appear in both the trainer's and the firer's viewers. The firer's viewer has crosshairs. He moves the DGT launcher, placing the crosshairs on the target. He keeps the crosshairs on the target until the missile explodes. Through the headset, he will hear the simulated sounds of the Dragon: the firing of thrusters (when he adjusts his aim) and the blast itself. He will see the impact and know at once whether he hit or missed the target. Throughout this training, he can hear the trainer's commands as well as the battlefield sounds of small arms and artillery fire. At the end of each mission, the trainer's screen displays the firer's score. He can replay or save the mission for future use. If the trainer sets up a printer to use with the DGT, he can print a copy of the mission performance results.

DANGER

EVEN "LOW VOLTAGES" PRESENT A HAZARD. IN SOME CONDITIONS, VOLTAGE AS LOW AS 50 VOLTS COULD KILL YOU.

B-13. SAFETY

Wherever the DGT is used, commanders and leaders must develop local directives and SOPs to supplement existing safety precautions. For the protection of soldiers, these documents should spell out locations; safety requirements; individual responsibilities and soldier's limits; and sequence of operations. Everyone must follow the safety precautions. The DGT uses high voltage. Failure to observe safety precautions could cause death. Before using this equipment, you must know the following rules:

a. Never try to operate electronic equipment alone. Be sure someone else is nearby who knows the operation and hazards of the equipment and can give you first aid.

b. Never touch the metal pins when connecting or disconnecting the power cords.

c. On each piece of equipment, learn which areas carry high voltages. Also, be careful not to contact high-voltage connections when installing or operating this equipment.

d. Before working inside the equipment, turn off the power. Before touching anything, ground anything that might carry a high voltage.



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