Dukane DK130, DK120, DK140, DK100 User Manual

DUKANE CORPORATION
SEACOM DIVISION
TECHNICAL MANUAL
UNDERWATER ACOUSTIC BEACON
MODELS DK100/DK120/DK130/DK140
April 13, 2004
DUKANE CORPORATION ST. CHARLES, ILLINOIS 60174 PHONE: 630-762-4050 FAX: 630-762-4049
DOCUMENT NO. 03-TM-0037 © DUKANE CORPORATION
E-MAIL: seacom@dukcorp.com INTERNET: www.dukcorp.com/seacom
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This manual should be read in its entirety prior to
any installation, operation, testing or maintenance
of the DK100/DK120/DK130/DK140 Underwater
Acoustic Beacons.
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TABLE OF CONTENTS

SECTION I................................................................................................................... 5
GENERAL INFORMATION..................................................................................... 5
1.1. INTRODUCTION........................................................................................................... 5
1.2. GENERAL DESCRIPTION. .......................................................................................... 5
SECTION II ................................................................................................................. 8
INSTALLATION ........................................................................................................ 8
2.1. GENERAL..................................................................................................................... 8
2.2. INSTALLATION CRITERIA OF THE BEACON. .......................................................... 8
2.3. SURVIVABILITY. .......................................................................................................... 8
2.4. ENVIRONMENTAL. ...................................................................................................... 8
2.5. MAINTENANCE............................................................................................................ 8
2.6. INSTALLATION PROCEDURES FOR THE DK100/DK120 AND THE N30A26 SE-
RIES MOUNTING KIT. ................................................................................................... 9
2.7. INSTALLATION PROCEDURES FOR THE DK100/DK120 AND THE N30A21A
MOUNTING KIT............................................................................................................ 10
2.8. INSTALLATION PROCEDURES FOR THE DK130/DK140 AND THE N30A29 SE-
RIES MOUNTING KIT. ................................................................................................. 12
2.9. INSTALLATION PROCEDURES FOR THE DK130/DK140 AND THE N30A21A
MOUNTING KIT............................................................................................................ 13
SECTION III ............................................................................................................. 15
OPERATION.............................................................................................................15
3.1. THEORY OF OPERATION. ........................................................................................ 15
SECTION IV.............................................................................................................. 16
TESTING ................................................................................................................... 16
4.1. GENERAL................................................................................................................... 16
4.3. OPERATIONAL TESTING.......................................................................................... 16
SECTION V ...............................................................................................................17
MAINTENANCE DK100/DK130 ............................................................................17
5.1. GENERAL................................................................................................................... 17
5.2. BEACON CLEANING. ................................................................................................ 17
5.3. BEACON TESTING. ................................................................................................... 17
5.4. PRECAUTIONS. ......................................................................................................... 17
5.5. BATTERY. .................................................................................................................. 17
5.6. BEACON DISPOSAL. ................................................................................................ 17
5.7. BEACON STORAGE. ................................................................................................. 17
SECTION VI.............................................................................................................. 18
MAINTENANCE DK120/DK140 ............................................................................18
6.1. GENERAL................................................................................................................... 18
6.2. BEACON CLEANING. ................................................................................................ 18
6.3. BEACON TESTING. ................................................................................................... 18
6.4. PRECAUTIONS. ......................................................................................................... 18
6.5. BEACON DISASSEMBLY.......................................................................................... 18
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6.6. BATTERY REPLACEMENT AND TESTING.............................................................. 18
6.7. BEACON OFF-CURRENT TEST................................................................................ 21
6.8. BATTERY DISPOSAL. ............................................................................................... 21
6.9. BEACON STORAGE. ................................................................................................. 21
6.10. BEACON OVERHAUL.............................................................................................. 21
SECTION VII ............................................................................................................ 22
WARRANTY DK100/DK120/DK130/DK140 ........................................................ 22
SECTION VIII...........................................................................................................23
SERVICE PROGRAM DK100/DK120/DK130/DK140 ......................................... 23
8.1. BEACON RETURN – DEFECTIVE............................................................................. 23
8.2. BEACON RETURN - NO DEFECT. ............................................................................ 23
8.3. BEACON RETURN - OUT OF WARRANTY. ............................................................. 23
8.4. BATTERY CHANGE/OVERHAUL FOR THE DK100 & DK130. ................................ 2 3
SECTION IX.............................................................................................................. 24
PROCEDURE FOR RETURNING DK SERIES BEACON TO FACTORY ..... 24
9.1. BEACON SERVICE. ................................................................................................... 24
9.2. BATTERY CHANGE/OVERHAUL.............................................................................. 24

TABLE OF FIGURES

Figure 1. DK Series Underwater Acoustic Beacon Installed in Mounting Kits ............. 5
Figure 2. Water Switch Location on Beacon.................................................................... 5
Figure 3. N30A26 Series Mounting Kit Installation Details............................................. 9
Figure 4. Installation of N30A26 Series Mounting Kit and Beacon .............................. 10
Figure 5. Mounting Hole Template for N30A21A Mounting Kit .................................... 10
Figure 6. N30A21A Mounting Kit and Beacon Overall Dimensions ............................. 11
Figure 7. Method of Installing the N30A21A Mounting Kit............................................ 11
Figure 8. Securing Beacon in N30A21A Mounting Kit .................................................. 11
Figure 9. N30A29 Mounting Kit Installation Details....................................................... 12
Figure 10. Installation of N30A29 Series Mounting Kit and Beacon ............................ 13
Figure 11. Mounting Hole Template for N30A21A Mounting Kit .................................. 13
Figure 12. N30A21A Mounting Kit and Beacon Overall Dimensions ........................... 14
Figure 13. Method of Installing the N30A21A Mounting Kit.......................................... 14
Figure 14. Securing Beacon In N30A21A Mounting Kit ................................................ 14
Figure 15. Nominal Pulse Train....................................................................................... 15
Figure 16. Typical Beacon Label..................................................................................... 16
Figure 17. Beacon Voltage Code .................................................................................... 16
Figure 18. Battery End Cover Removal With Vise Clamp and Spanner Wrench ........ 19
FIGURE 19. Battery Kit..................................................................................................... 19
Figure 20. Beacon Exploded View Showing Relative Location of Battery and Related
Parts............................................................................................................................. 20
Figure 21. RBB Label Placement ................................................................................... 21
Figure 22. Beacon Off-Current Test Set-Up ................................................................... 21
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SECTION I

GENERAL INFORMATION

1.1. INTRODUCTION.

1.1.1. GENERAL. This manual contains the de-
scription, theory, installation and maintenance for the DK100/DK120/DK130/DK140 Underwater Acoustic Beacon, hereafter referred to as the “DK Series”, manufactured by Dukane Corporation, Seacom Division, 2900 Dukane Drive, St. Charles, Illinois, 60174. See Figures 1 and 2. These bea­cons have been tested to, and meet, or exceed, all requirements of FAA TSO-C121.
shock and deep-water immersion. As shown on page 6 and 7, the DK Series beacons operate for 30 days when immersed in water. See Figure 2.
Figure 2. Water Switch Location on
Beacon
Figure 1. DK Series Underwater
Acoustic Beacon Installed in
Mounting Kits
1.1.2. SYMBOLS AND ABBREVIATIONS.
Symbols and abbreviations used in this manual are in accordance with ANSI Y14.15 and MIL-STD­12, respectively.

1.2. GENERAL DESCRIPTION.

1.2.1. PHYSICAL CHARACTERISTICS. The
DK Series beacons consist of a self-contained battery, an electronic module and a transducer. It is housed in a cylindrical watertight aluminum case capable of withstanding high-G impact
1.2.2. BEACON MOUNTING. The beacon is mounted to a flight recorder or the airframe by means of a mounting kit (See Section II). This mount consists of an extruded channel, which in conjunction with a securing plate retains the bea­con. Figure 1 shows the beacon mounted in the N30A21A Mounting Kit, a strap-type mount. This mount is used for applications where space limita­tions do not permit the use of the simpler N30A26 Series cradle mount.
1.2.3. BEACON SIGNAL. The beacon is a bat­tery-powered device, which radiates a pulsed acoustic signal into the surrounding water upon activation by its water-sensitive switch. Search operations in water for beacon equipped aircraft can be conducted by utilizing a portable receiver equipped with a directional hydrophone such as the Dukane Model N30A5 Series Locator. This receiver system is operable from small boats or by free-swimming SCUBA divers. Aircraft lost in deep water, i.e., in excess of 6000 feet (1829 meters), require special search gear. Beacon Speci­fications are listed on page 6 and 7.
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DK100/DK120 BEACON SPECIFICATIONS
Operating Freuency...............................................
Operating Depth....................................................
Pulse Length.........................................................
Pulse Repetition Rate............................................
Operating Life.......................................................
Battery Life In Beacon..........................................
Acoustic Output, Initial.........................................
Acoustic Output After 30 Days.............................
Operating Temperature Range..............................
Actuation...............................................................
37.5 kHz ± 1 kHz
Surface to 20,000 feet (6096 meters)
10 milliseconds
+ 10%
Not less than 0.9 Pulse/Sec
30 days (minimum)
6 Years
1060 dynes/cm
2
rms pressure at 1 meter
(160.5dB)
700 dynes/cm2 rms pressure at 1 meter (157.0dB)
+28°F (-2.2°C) to +100°F (+37.8°C)
Fresh or salt water
Radiation Pattern...................................................
Size.........................................................................
Rated output over 80 percent of sphere
1.30 inches (3.30 cm) diameter x 3.92 inches (9.95 cm) long (less mount)
Weight, Beacon.....................................................
Weight, N30A26B Mount.....................................
Weight, N30A21A Mount....................................
Storage Temperature Range..................................
6.7 ounces (190 grams)
6 ounces (170 grams)
3 ounces (85 grams)
-65°F (-54°C) to 160°F (71°C)
1.2.4. ENVIRONMENTAL TEST. The beacon complies with the preceding operational performance
standards after being subjected to environmental tests specified in FAA TSO-C121.
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DK130/DK140 BEACON SPECIFICATIONS
Operating Freuency............................................... 37.5 kHz ± 1 kHz
Operating Depth....................................................
Pulse Length.........................................................
Pulse Repetition Rate............................................
Operating Life.......................................................
Battery Life In Beacon..........................................
Acoustic Output, Initial.........................................
Acoustic Output After 30 Days.............................
Operating Temperature Range..............................
Actuation...............................................................
Radiation Pattern...................................................
Surface to 20,000 feet (6096 meters)
10 milliseconds
+ 10%
Not less than 0.9 Pulse/Sec
30 days (minimum)
6 Years
1060 dynes/cm
2
rms pressure at 1 meter
(160.5dB)
700 dynes/cm2 rms pressure at 1 meter (157.0dB)
+28°F (-2.2°C) to +100°F (+37.8°C)
Fresh or salt water
Rated output over 80 percent of sphere
Size.........................................................................
1.30 inches (3.30 cm) diameter x 2.97 inches (7.54 cm) long (less mount)
Weight, Beacon.....................................................
Weight, N30A29 Mount.....................................
Weight, N30A21A Mount....................................
Storage Temperature Range..................................
4.9 ounces (139 grams)
3.5 ounces (99 grams)
3 ounces (85 grams)
-65°F (-54°C) to 160°F (71°C)
1.2.5. ENVIRONMENTAL TEST. The beacon complies with the preceding operational performance
standards after being subjected to environmental tests specified in FAA TSO-C121.
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SECTION II

INSTALLATION

2.1. GENERAL.

This section describes the installation of the beacon mounting kits and the installation of the DK Series beacons into these mounts.
2.2. INSTALLATION CRITERIA OF THE
BEACON.
NOTE
All installations to Cockpit Voice Record­ers and Flight Data Recorders should be in accordance with the recorder manufacturer’s approved procedures and hardware.

2.3. SURVIVABILITY.

2.3.1. The beacon location should minimize the
probability of physical damage to the device during water impact. The aft mid-section of the aircraft is normally the most desirable location for the beacon, but consideration must be given to environmental conditions outlined in Section
2.4.
2.3.2. The area selected for the beacon mounting
should be free of the possibility of heavy equip­ment tearing loose and striking the device.
2.4.2. The beacon is a battery-powered device and installed shelf life is affected by higher than normal temperatures. Maximum temperature must not exceed 160°F (71°C).
2.4.3. Inadvertent actuation of the water switch by any source of water, such as rain, salt spray, melting ice or snow, head or washroom over­flow, foods and beverages, must be avoided.
2.4.4. In order to avoid accumulation of moisture on the water-switch, the device should be mounted with the long axis of the beacon hori­zontal or with the water-switch facing down. A clean switch will allow moisture to collect into droplets and run off the switch, without activat­ing the beacon.
2.4.5. Honeycomb structure, tarpaulin fabrics, clothing, parachutes, cargo, etc., are sound­absorbing materials. Do not surround the device with these materials and if necessary, remove small areas of such materials from the immediate vicinity.
2.4.6. Any compartment that may not be ex­pected to flood under light impact should not be used. Direct contact between the beacon case and water is necessary for actuation and acoustic radiation.
2.3.3. Installation should be made to a substan-
tial structural member, but kept as simple as possible and must not weaken the structural member.

2.4. ENVIRONMENTAL.

2.4.1. The DK Series beacon must not be disas-
sembled, crushed, penetrated, incinerated or exposed to temperatures above 160°F (71°C).
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2.5. MAINTENANCE

In addition to observance of the preceding mandatory considerations, where possible the selection of a mounting location should provide for convenient beacon access during inspection intervals. The proper mounting location should also provide for clearance for removing the beacon from its mounting cradle.
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