1、i - Detecting Group, Submarine Anomaly (SAD) AN/ASA-64A This specification -has been approved by Naval Air Systems Command, Department of the Navy 1. SCOPE *l. 1 . Scope - The equipment covered by this specification shall be for the automatic recognition and marking of submarine signals detected by
2、Magnetic Anomaly Detection (MAD) equipment. The equipment shall operate in all types of aircraft designated for anti-submarine warfare and equipped with MAD equipment. pulse which can be applied to a computer, coordinate plotter, strip chart recorder, audio oscillator or any other such equipment. Th
3、e controls for the detectar shall be incorporated in the C-7693/ASA-71. - It shall generate a voltage 1.2 Classification - The equipment covered by this / specification shall consist of the items listed in 6.8. 2. APPLICABLE DOCUMENTS k2.1 General - The following documents of the issue in effect on
4、the date of invitation for bids farm a part of this specifica- tion to the extent specified herein. MIL-D-81465A(AS) 30 Julv 1971 2- _ - Superseding MIL-D-81465 (AS) MILITARY SPECIFICATION 15 April 1967 SPECIFICATIONS Military MIL-E- 5 400 MIL-T-5422 MIL-R- 5 85 7 . MIL-M- 7 79 3 MIL-E-17555 Electro
5、nic Equipment, Aircraft, General Specification for Testing, Environmental, Aircraft Electronic Equipment Relays (electrical (excluding thermal) for Electronic and Communication - type equipment), General Specification for Meter, Time Totalizing Electronic and Electrical Equipment and Associated Repa
6、ir Parts, Preparation for Delivery of Licensed by Information Handling Services- MIL-D-81gb5A 58 7797706 0170827 O W mD-81465A( AS 1 MIL- T-i8303 Test Procedures; Preproduction and Inspection, for Aircraft Electmnic Equipnent, Format for MTL-N-l8307 Nomenclature and Nameplates for Aeronautical Elect
7、ronic and Associated Equipment MIES-19500 ILC-815l.l Semiconductor devices, General Specification for Connector, Electrical , Circular, High Density, Quick Disconnect, Environmental Resisting General Specification for Bureau of Nad Weapons AR-5 Microelectronic Devices Used in Avionics Equipment, Pro
8、cedures for Selection and Approval of WR-101 Military MIL- STD- 415 Weapons Requirements for Advanced ASW Electronic Systems Part I - Electromagnetic Control Requirements for Advanced ASW.Avionics System Test Points and Test Facilities for Electronic Systems and Associated Equipment, Design Standard
9、 for MIL- STD- 470 Maintainability Program Requirements (for . Systems and Equipment) MIL- STD- 471 Maintainability Demonstration MUI- STD-701 Preferred and Guidance Lists of Semiconductor devices Electric Pcruer, Aircraft Characteristics and Utilizatian of MIL- SD-704 M+ sm-781 IPest Levels and Acc
10、ept/Reject Criteria for Reliability of Non-Expendable Electronic Equipment 2 .- -. . - Licensed by Information Handling ServicesMIL-D-LLIb5A 58 = 7797906 0370830 7 MIL-D-81465A(AS) MIL-STD-785 Requirements for Reliability Program (for ysteim and Bquipments) MIL-STD-831 Test Reports, Preparation of O
11、THER PUBLICATIONS FED-STD-595 Color . , ._ - - . -. *2.2 Availability of Documents (1) When requesting specifications, standards, draw- ings, and publications refer to both title and number. Copies of this specification and applicable specifications required by contractors in connection with specifi
12、c procurement functtons may be obtained upon ap- plication to the Commanding Officer, -Pub-lfcatfons and Forms Center, Code 105, 5801 Tabor Avenue, Phkladelphta, Pecnsylvania 19120. . . 2.3 Precedence of Documents - men the requirements of the contract, this specification, or applicable subsidiary s
13、pecifications are in conflict , the- f olowing precedence shall apply: (1) Contract - The contract shall have precedence over any specification. (2) This Specification - This specification shall have precedence over all applicable subsidiary specifications. viation from this specification, or from s
14、ubsidiary specifications where applicable, ,shall be specifically approved in writing by the procuring activity , Any de- (3) Referenced Specification - Any referenced speci- fication shall have precedence over all applicable subsidiary specifica- tions referenced therein. the extent specified. All
15、referenced specifications shall apply to 2.4 Procuring Activity - The tem “procuring activity“ used in this specification shall be defined as the procuring activity and/or its aufhorlzed representathe. 3. REQUIREMENTS 3.1 Preproduction - This specification makes provisions for preproduction testhg.
16、. . . . . . . . . 3.2 Parts and Matertals - In the selection of parts and materials fulfillment of major design objectives shall be the prime con- sideration. In doing so the following shall govern: (i) Microelectronic items shall conform to require- ments specified herein. (2): Other parts and mate
17、rials requirements shall conform to Specification MIL-E-5400. 3 Licensed by Information Handling Services(3) Nonrplrirable subassemblies, as outlined in Specification MIL-E5400, shall be used when practicable. of the subassembly and the amount of circuits to be included therein shall be spproved by
18、the procuring activity. have a MeaP-T3me-Between-Failure (MTBF) of lhe general size NoWepaSrable subassemblies must hours minimum. (See 6.4) (4) When previously produced models of this equipment did not use numepairable subassemblies, the design shall not be changed to employ nomepairable assemblies
19、 without the approval of the pmcuring - activity. Nonstandard Parts and Materials Approval - Approval for the use of nonstandard pats and materials other than microelectronic devices shall be obtained as outlined in Specificatlon MIL-E-5400. electronic devices shall be cbsen and appmved as outlined
20、in AR-5. 3.2.1 Micro- 3.2.2 Electron Devices - Bansistors and diades shall be chosen and applied in accordance with the requirements of MIL-S-19500. Semi-conductor devices listed in MnrSTD-7Ol shall be utilized whenever possible 3.2.3 Microelectmnic Modular Assemblies - When used, Micro- electronic
21、Modular Assemblies shall meet the requbenents of AR-5. 3.2.4 Maintenance Module - A maintenance module is defined as the least complex segment of the contract and article(s) which is capable of being removed 8nd replaced at organizational level maintenance using tools Further, it is the seeplent la
22、which the Contractor will provide fault detect- ion and isolation techniques consistent with scheduled and unscheduled organ- izational level maintenance requirements. support equipment and procedures approved for the end article( s) . 3.2; 5 Microelectronic Interchangeability - lhe interchange- abi
23、lity pmriSiOnS of AR-5 shall govern Microelectronic Interchangeability. 3.3 Desim and Construction - me equipment shall conform with the applicable requirements .of Specification Ma-E-5400 for design, construction and workmanship, except -8s otherwise specified herein. * 3.391 excluding cables, shal
24、l be a minimum consistent with good design and sha not exceed 7 pounds. %ta Wemt - Ihe total weigbt of the equipment, 303.2 Reliability 3.3.2.1 Reliability Prom - Ine contractor shall establish and conduct a reliability assurance program in accordance with MIL-SCD-785. 3.3.2.2 Operational Stability
25、- flhe equipment shall operate with satisfactory performance, continuously or intermittently for a period of at least 250 hours without the necessity for readjustment of any controls which are inaccessible to the operator during normal use. 4 Licensed by Information Handling ServicesP. HIL-D-BL465A
26、58 W 9999906 0170832 0 m MIL-D-81465A(AS) 3.3.2.3 of.10,000 hours with reasonable servicing and replacement of parts. Operating Life - The equipment shall have total operating lise Parts requiring schedded replacement and replacement intervals shall be specified by the contractor. -. .- - I 3.3.2.4
27、Reliability in Mean-Time-Between-Failure (MTBT) - The spe- cified Mean-Time-Between-Failures for the equipment shall be 1000 hours when tested and accepted as outlined under the requirements of 4.4.3. .- -. - - _. . 3.3.2.5 Time Totalizing Meter - The equipment shall contain a time totalizing meter
28、in accordance with Specification MIL-M-7793. 3.3.3 3.3.3.1 use of cables and and MIL-C-81511. Cabling and Connections. Cables and Connectors - The equipment shall provide for the connectors in accordance with Specification WR-101 (Part I) .3.3.3.2 Interconnection Cabling - The equipment shall be cap
29、able - -. of satisfactory operation using external wiring in accordance with the ap- - plicable requirements of Specification WR-101 (Part I). The external wiring shall be unshielded, except that a minimum number of individual wires may be shielded when demonstrated as necessary to meet interference
30、 control require- ments and provided the assembly of the cable to its plugs may be easily ac- complished. External cables and that portion of the connectors attached to the cables shall not be supplied as part of the equipment. . , . 3.3.4 Interchangeability of Reordered Equipment - For reordered eq
31、uipment, interchangeability shall exist between units and all replaceable assemblies, subassemblies and parts of a designated model of any previously manufactured equipment, supplies or designated by the procuring activity. 3.3.5 Interference Control - The equipment shall cnnform with all of the req
32、uirements of iJR-101 (Part I) for design, construction and workman- ship. A Control Plan will be prepared in accordance with WR-101 (Part I). 3.3.6 Maintainability . 3.3.6.1 Maintainability Program - The contractor shall es tablish All maintenance actions shall be capable of being performed by a -.a
33、nd conduct a maintainability program in accordance with MIL-STD-470 and MIL- STD-471. technician with a comprehensive ability level as follows: (a) Civilian education: High School graduate or equivalent. (b) Technical training: Navy, Class A Technical school appropriate to the maintenance task. (c)
34、Experience : .lho years of technical experience in addition to technical training 5 Licensed by Information Handling Services- M1L-D-8L465A 58 m q777906 0370833 2 but not be limited to these circuits only. (1) Converter shall convert the flo-ating magnetometer signal output as described in para. 3.4
35、.2, to a grounded signal output. Signal Reference Converter - The Signal Reference (2) Noise Rejection Filters - There shall be two Each filter shall be a passive twin-T Noise Rejection Filters which shall reject the quasisinusoidal geologic arid equipment background noise. rejection filter. have a
36、Q of 0.5. isolat ion amplifier. One shall provide 45 db 2 10% attenuation at 0.023 cps k and the other shall provide 30 db 10% attenuation at 0.9 cps. Both shall The filters shall be isolated from each other by an lo , ./- - Licensed by Information Handling ServicesMIL-D-8LLlb5A 58 m 9979906 0170838
37、 I W MIL-D-81465A(AS) (3) Active N1-Wave Rectifier - Ihe Active Full-Wave Rectifier shall accept the signal from.the Noise Rejection Filters and full-wave rectify it. the active Full-Wave Rectifier shall be adjustable. (4) Active Sampling Integrator - !be Active Sampling Integrator shrill integrate
38、the output of the Active NL-Wive Rectifier (3) for a 2.5 second + i- Whenever be produced which then starts an inhibition cycle of timing cikcuit (10). - _ . A%*. - - *.(E) Integrator Reset Circuit - !he integrator reset circuit shall automatically reset the integrator to a potential not exceed- ing
39、 1 mv, every 2.5 sec (+ i). me integrator reset circuit s also accept the outputs froan the-timing circuit (10) and short the samplbg integrator for a short period at the en of the inhibition cycle and prior to the release of the short at the input of the output amplifier (6) * (13) Relay Circutt -
40、!he relay circuit shall provide a contact closure (for the Wbit indicator on the control console) for the time period that the timing circuit (10) produces an inhibit signal. lhe relay shall be in accordance with MIL-R-5757/13. 3.5.1.5 Adjustments - Iheindicator, magnetic variation conbin the fllowi
41、ng internal controls: to pennit the adjustment of the gain of the active full wave rectifier (3) in the recognition channel, to provide a coarse threshola adjustment. shall be a screw driver adjustment. (1) Gain Control - A potentiometer shall be provided It (2) Maneuver Rate -A potentiometer shall
42、be provided to permit the adjustment of the minimum maneuver rate which will produce an output signal to the timing circuit (10). between 1 degree per second and 35 degrees per second. driver adjustment . !his rate shall be adjustable It shall be a screw . * (3) Inhibition Time - A potentiometer sha
43、ll be pro- vided to Dermit the ad,iustment of the fixed time period T of thhg circuit . (10). Gs time pari the MAD set; and aircraft AC wer. 4 QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection - Unless othemise specified in the contract or purchase order, the isirpplier is responsible .
44、for the performance of all inspection requirements as specified herein. Except as otherwise specified, the supplier may utilize his own facilities or any commercial laboratory acceptable to the procuring activity. Ihe procuring activity reserves the right to perform any of the inspections set forth
45、in this specification wnere such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. / i - 12 - I Licensed by Information Handling ServicesMIL-D-LYbSA 58 9 9999906 OL70840 T 9 . . 4.1.1 Classification of Tests - Items covered by this -. -. compliance
46、with all .applicgble- requwements: - - specification shall be subjected to the following-tests to determine . (1) Preproduction (First Article) %sts (2) Initial l?roduction Tests I. (3) - Acceptance Tests 4.2 - Preproduction (First Article) Tests - Preproduction tests shall be made on-m equipment re
47、presentative of the production equipnents to be supplied under the contrsct. be accomplished under the responsibility of the contractor and shall be conducted in accordance with the approved test procedure of 4.6. The Government Inspector and the procuring activity shall be advised when tests are to
48、 be conducted so that a representative may be designated to witness or supervise the tests when so desired. Contractors not having adequate facilities to conduct alJ. required tests shall obtain the services of a coaimercial testing laboratory acceptable to the procuring activity. Preproduction test
49、s shall 4.2.1 Preproduction (First Article) Test Data - All required test data collected h the conduct of these tests shall be submitted to the procuring activity for review and approval. but not be United to a list of ail electrical and electronic parts giving: (1) (2) Applied voltage and current (3) This data shall include Specified voltage, current and temperature ratings Ambient and surface temperature of temperature criticalparts. ature operat ing condition. all tests deemed necessary by the procuring activity to detemlne that the e
