1、MIL-R-28817 58 77777Ob 0445757 e- -_- 19 May 1975 SUPERSEDING (See 6 5) MILITARY SPECIFICATION RADIO NAVIGATION RECEIVING SET, OMEGA, AN/BRN-7, AN/SRN-17 This specification is approved for use by all nepartments and Agencies of the Department of Defenae. 1. SCOPE 1.1 Purpose. This specification pres
2、cribes the requirements for the de- sign, construction, and testing of an OMEGA radio navigation receiving set for submarines and surface ships. 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bids or request for proposal, form a part of the speci
3、fication to the extent epecified herein. . SPECIFICATIONS MILITARY M f L-S - 9 O i MIL-E-16400 NIL-E-17555 - Shock Tests, H.I. (High-Impact); Ship- board Machinery, Equipment and Sys- tems, Requirements for (Navy) - Electronic Equipment, Naval Ship and Shore; General Specification (Navy) - Electroni
4、c and Electrical Equipment, Accessories, and Repair Parts, Pack- aging and Packing of STANDARDS MILITARY HIL-STD-105 MIL-STD-108 HIL-STD-16 7 MIL-STD-461 , MIL-STD-462 MIL-STP-4 80 - Sampling Procedures and Tables for In- spection by Attributes - Definitions of and Basic Requirement for Enclosure fo
5、r Electric and Elec- tronic Equipment - Mechanical Vibrations of Shipboard Equipment - Electromagnetic Interference Character- istics, Requirements for Equipment - Electromagnetic Interference Character- istics, Measurement of - Configuration Control-Engineering Changes, Deviation8 and Waivers K . F
6、SC 5825 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-781 - Reltability Tests Exponential MIL-STD-1399 MIL -S TD-14 7 2 Dis tribut ion Systems - Interface Standard or Shipboard - Human Engineering Design Criteria for Military Systems, Equ
7、ipment, and Facilities . I PUBLICATIONS NAVAL ELECTRONIC SYSTEMS COMMAND NORT 71-71 - Submrine OMEGA Computer Program (Per- formnc e Spec if ica t ion) (Copies of specifications, standards, drawings, and publications required by suppliers in connection with specific procurement functions should be o
8、b- tained from the procuring activity or as directed by the contracting officer.) 3, REQUIREMENTS ., 3.1 General requirements. Unless otherwise specified herein, the equip- ment shall meet the requirements of MIL-E-16400. 3.2 Parts and materials. In the selection of parts and materials, the ful- fil
9、lment of design objectives shall be the prime consideration. Microelectronic technology shall be used. Approval for the use of nonstand- ard parts and materials shall be obtained in accordance with MIL-E-16400 and as specified herein. Throw-away nodules shall be considered parts, and nonstandard par
10、t approval shall be obtained for each such part. 3.2.1 Nonstandard parts and materials. 3.2.2 Modular construction of equipment. The equipment shall bemodular- ized in accordance with MIL-E-16400 and as specified herein. nonrepairable, throw-away modules shall be made. Throw-away modules shall be in
11、herently low cost and highly reliable. 3.2.3 Mercury contamination. Components shall not have come in contact with mercury, mercury compounds, or mercury bearing instruments or devices em- ploying only a single boundary of containment during manufacture, tests, or in- spections without the specific
12、written approval of the comnand or agency concerned. Maximum use of 3.2.4 Plastic encapsulated devices. Plastic encapsulated devices shall not be used. 3.3 Design and construction. Design and construction shall be in accord- ance with MIL-E-16400 and subject to the approval of the compand or agency
13、concerned. 3.3.J Cabling and connections. Cables and connectors shall be cbosenin accordance with MIL-E-16400. Ail interconnecting cables (between units of 2 C Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-R-28819 (EC) receiving set) shall be m
14、ade up on 1 end and supplied with the receiving set. Mating connectors for external wiring cables rhall be supplied with the receiving set. more than 5 feet (150 cm) and they shall, in turn, be separated from the control indicator by not more than 30 feet (900 cm). The receiver computer and intercon
15、necting group shall be separated by not 3.3.2 Interchangeability of standard mdules. No adjustments shall be re- quired when replacing plug-in modules other than normal control f unctions asso- ciated with turn-off and turn-on of the equipment. All plug-in modula shall be designed to preclude improp
16、er insertion into the receiving set. under this specification shall be two-way interchangeable with the corresponding modules delivered with existing AN/SRN-17 and ANIBRN-7 equipment. Modules produced 3.3.3 Configuration control. Configuration control shall be maintained in accordance with MIL-STD-4
17、80. shall be subject to the approval of the command or agency concerned. All engineering changes, deviations, and waivers 3.4 Reliability. The receiving set shall have a mean time between failure (MTBF) of at least 1000 hours, (eo), in accordance with MIL-STD-781. 3.5 Maintainability. The receiving
18、set specified herein shall have an equipment repair time (ERT) of no greater than 30 minutes when repair is by re- placement of-modules and parts at the organizational level. pair time includes localization, isolation, disassembly, interchange, reassembly, alignment, .and checkout for all module and
19、 part repairs. The equipment re- 3.6 Environmental conditions. Environmental conditions shall be in accord- All parts of the equipment except ance with MIL-E-16400 and as specified herein. the AS-2960/SRN-17 antenna are not exposed to weather or external air pressure. 3.6.1 Temperature classificatio
20、n. Temperature Classification of the equip- ment shall be range 4 of MIL-E-16400. 3,6.2 Wind speed, icing, hydrostatic pressure. hydraulic shock, fungus, _magnetic field environment, and nuclear air blast. static pressure, hydraulic shock, fungus, magnetic field environment, and nu- clear air blast
21、requirements of MIL-E-16400 are not applicable to the specified equipment. The wind epeed, icing hydro- 3.6.3 Electromagnetic interference (EM). Electromegnetic interference requirements shall be in accordance with MIL-STD-461 and as epeclfied herein. The equipment shall be considered class U. 3.6.4
22、 Shock. Shock requirements ehall be in accordance with MIL-S-901. Grade A shockproofness shall be required. deck mounted. The equipment shall be classified as 3.6.5 Vibration. Vibration requirements shall be in accordance with Ha- STD-167 and a8 specified hereu. ments up to and including 33 hertz (H
23、z). The equipment shall meet the type f require- 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-XL-R-28819 (EC) 3.6.6 Enclosure. Enclosure requirements shall be in accordance with MIL- The degree of enclosure shall be dripproof at STD-108 and as s
24、pecified herein. a 15 angle. 3.7 Electrical design. Electrical design shall be in accordance with MIL-E-16400 and as specified herein. 3.7.1 Power. Primary power will be provided by a single interface between The interconnect- the system of the ship and the interface box. the equipment shall be deri
25、ved from this primary power input. ing group shall contain a power ON-OFF switch and fuses (with blown fuse indi- cators). The maximum power shall not exceed 400 watts. power input will be FHOF-3. equipment ground. All other power requirements for The cable type for the The green lead and pin B of t
26、he connector shall be 3.7.1.1 Primary power supply line voltage and frequency. Primary power will be 115 volts (V), 400 Hz, single phase. with MIL-E-16400. Regulation shail be in accordance 3.7.1.2 Orderly shutdown. The receiver computer power supply assembly shall provide for an orderly shutdown in
27、 the event of primary power loss. orderly shutdown shall prevent loss of stored data in the computer and shall prevent permanent daaiage to the receiving set which could be caused by power transients. Upon return of primary power after a dropout, the receiver shall automatically re-initiate the sync
28、hronization routine, and then shall continue navigation (either using OMEGA signals or dead reckoning as appropriate) using the positional and time information which was available imnediately prior to the power loss. The 3,7.2 Interface requirements. The ANIBRN-7 shall interface with the ortho- gona
29、l loop and floating wire antennas of the ship, via the CU-14411BRR multi- coupler, and the heading and speed references of the ship. interface with an AS-2960 whip antenna. The AN/sRN-17 shall, 3.7.2.1 Input signals. The OMEGA signals from the submarines orthogonal loop antenna (AT-317/U) and floati
30、ng wire antenna (As-l554/U) are routed to the navigation set through the CU-l441/BRR multicoupler in the case of the AN/BRN-7 and from the AS-2960 whip antenna in the case of the AN/SF?-17, switching functions are performed on the OMEGA signals internal to the CU-1441/ ERR and the output signals are
31、 routed to the receiver on a single RG-264/U cable with a nominal SO ohm impedance balanced to ground. orthogonal loop antenna and the floating wire antenna utilize the same two con- ductors of the RD-264A/U cable and are electrically oriented parallel to the keel of the ship. oriented perpendicular
32、 to the keel of the ship. only in the active (on the C=1441/BRR onilticoupler) mode. in the ANIBRN-7, The fore/aft loop of the The athwart loop of the orthogonal loop antenna is electrically Both antennas shall be used 3.7.2.2 Heading and speed references of the ship. speed of the ship will be coupl
33、ed to the receiver as synchro inputs, references will be llSV, 400 Hz. Heading of the shlp and The synchro Synchro excitation will be 9OV line to line. 4 C Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-For the heading of the ship, a single revoluti
34、on, O to 360 degrees, synchro will be used. will be used for the AN/BRN-7. For the AN/SRN-17, O to 100 knots per revolution will be used. Synchro interface requirements shall be in accordance with Sec- tion 702 of MIL-STD-1399. Synchro inputs to the box shall be via an isolation switch which is an i
35、ntegral part of the box. pable of deenergizing harmful voltages at the point of entry to the ON-128. cable type for the synchro inputs shall be 3%-7. For the speed of the ship a single revolution, O to 40 knots, synchro The isolation switch shall be ca- The 3.7.3 Loop resolver, The submarine antenna
36、 systems specified herein are directional. cuitry to correctly switch the input signals from the CU-l441/BRR multicoupler to the receiver. The AN/BN-7 shall be designed to incorporate loop resolving cir- 3.7.4 Antenna selection indicator. A switch shall be provided on the C-9461 control box which wi
37、ll enable the operator to indicate to the antenna switching matrix which antenna (loop or floater) is in use. of the switch indicator type and it shall be mounted as an integral part of the control-ind ica tor. The switch shall be 3.7.5 Timing. All timing and phase measurement functions shall be der
38、ived from a stable internal frequency standard. ing requirements: The standard shall meet the follow- (a) (b) Long time stability shall be, at least, 1 part in 108 per day. Self calibration of the standard shall be accomplished by a cob- pensating computer program routine which derives the appropri-
39、 ate corrections from the off-the-air signals. 3.8 Mechanical design. The mechanical design shall be in accordance with MIL-E-16400 and as specified herein. 3.8.1 Mechanical functionalization. The receiving set shall be mechani- cally functionalized as shown in figure 1. Functions of the units are a
40、s follows: (a) The ON-128 interconnecting group shall provide the necessary hard- ware to interface the receiver computer and control indicator with the systems of the ship. output connec tor to provide power to the programmer controller, TS-3389. The OR-133 receiver computer shall contain the hardw
41、are to detect and measure the OMEGA signals and make the necessary computa- tions to meet the functional performance requirements specified herein. machine interface between the operator and the receiving sets. Functions of the controls and indicators shall be as described in 3.9. OMEGA signals. It
42、also shall provide a power (b) (c) The C-9461 and C-9462 control indicators shall provide the man- (d) (AN/SRN-17 only) The AS-2960 antenna shall receive transmitted Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-r PC Power ON-128 nter connec J=oup
43、AS-2960 (SLEW-1 7 ) I U I (C 9461(BRN-7 t Powera C 9482 (SRN-1: 1 Power Synchro Data b Con t?%ica tor w supplied not supplied part of TS-3383 Mating Connector supplied with CU-1441 eating connector supplied with TS-3389 Figure 1. OMEGA navigation receiving sete, AN/BEuJ-7 and AH/SRN-17. 6 - LiI I c
44、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-R-28 8 19 (EC Unit Receiver computer interface box Control indicator Antenna 3.8.2 Size and weight. Maximum weight of the individual units are. as Teble I (all weights and dimensions include mounti
45、ng bases). Table I. Size and weight. Height Wid th Depth 11.5 (292.10) 13.1 (332.74) 23.2 (589.28) 9.2 (233.68) 9.0 (228.60) 11.0 (279.40) (in) (=o (in) (ml (in) (4 13.2 (335 . 28) 9.2 (233.68) 8.6 (218.44) 125.3 (3182.62) 5.5 (139.70) 6.0 (152.40) 3.8.3 Mounting bases. Access to replaceable or repa
46、irable assemblies, in the control indicator and receiver computer units, shall be provided by the use of suitable mounting bases to be supplied as part of the receiving set. 3.8.4 Test equipment access. Provision shall be made for interface of the receiving set with the programer controller. interfa
47、ce connections may be used. vided at convenient locations on the receiver computer front panel for this function. A maximum of three cable type Quick disconnect connectors shall be pro- 3.9 Controls, indicators, and panel layout. Controls, indictors, and panel layout shall be in accordance with NIL-
48、E-16400 and as specified herein. 3.9.1 Panel layout. The front panel layout of the control indicator shall be as shownin Figure 2. indicators shown in Figure 2 are given in 3.9. Descriptions and characteristics of the controls and 3.9.2 Indicators. Lamps and other indicators used on the front panels
49、 shall be in accordance with MIL-STO-1472 and as specified herein. shall have opaque backgrounds with illuminated red legends except the SYCTE!l MALFUNCTION indicator which shall have a luminous red background with opaque legend . Indicators 3.9.3 Edge lighting. Edge lighting of the control indicator is not required . 3.10 Performance characteristics. The overall performance of the receiving set shall be as specified herein. the equipment without
