1、MIL-T-19383A (OS) 28 February 1968 Superseding MIL-T-19383 (Nord) 21 March 1956 MI T TEST SE“, RY SPEC1 FI CATI-ON SYNCHRO TRANSMITTER MK 312 M.0D O (For Torpedo Mk 37 Mods O, O(M) , 1, 2, and 3) This specification has been ,approved by the Naval Ordnance Systems Command, Department of the Navy . 1.
2、 SCOPE 1.1 Scope. This specification describes the requirements for themurement ofa synchro transmitter test set, LD 482753 and Drawing 1583207, capable of replacing and simulating the functions of the course gyro of Torpedo Mk 37 Type in system tests performed on the torpedo. The synchro transmitte
3、r is required to simulate any given angular position of the course gyro spin axis relative to the torpedo-longitudinal axis and to present on the concentric dial assembly a precise indication of this angular position in degrees and minutes. The test set front panel also presents an indication of the
4、 course gyro caged condition. 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 this specification to the extent specified herein. SPECIFICATIONS MIL I TA RY MIL-T-945 MIL-E-17555 Test Equipment, For Use W
5、ith Electronic Equipment; General Specification Electronic and Electrical Equipment and Associated Repair Parts; Preparation for Delivery of . y THIS DOCUMENT CONTAINS 13 PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-l9383A(OS) STANZ)A
6、RDS MILITARY MIL-STD-105 DRAWINGS Sampling Procedures and Tables for Inspection by Attributes NAVAL ORDNANCE SYSTEMS COMMAND LD 482753 Test Set, Synchro Trans- mitter Mk 312 Mod O, and all parts and subassemblies listed thereon. Dwg 1583207 Test Set, Synchro Transmitter, Mk 312 Mod O, Assembly PUBLI
7、CATIONS NAVAL ORDNANCE SYSTEMS COMMAND WR-43 Preparation of Quality Assurance Provisions (Including Classification of Characteristics) OS 6341 Miscellaneous General Ordnance Design Requirements (Copies of specifications, standards, drawings, and publi- cations requested by contractors in connection
8、with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of
9、invitation for bids or request for proposal shall apply. NATIONAL BUREAU OF STANDARDS PUBLICATIONS Handbook H28 Screw-Thread Standards for Federal Services (Applieation for copies should be addressed to the Superintendent of Documents, Government Printing Office, Washington, D. C. 20402) 2 Provided
10、by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-17383A 66 M 3777706 0327733 T MIL-T-l9383A(OS) 3. REQUIREMENTS 3.1 Description. The synchro transmitter is a portable test set consisting primarily of a synchro, a concentric dial assembly, hand wheel, pil
11、ot light, and a 14-pin connector. The synchro transmitter is electrically identical to the synchro in Gyro Mk 39 Mod O, and-when connected to the torpedo during a test, it simulates the synchro output of Gyro Mk 39 Mod O and its caging-circuit functions. The synchro trans- mitter can be positioned a
12、t any heading by means of the hand wheel, with the dial assembly indicating the heading. The fine dial is calibrated from O to 10 degrees in 10 minute graduations; the course dial is calibrated from O to 360 degrees in 10 degree graduations. External electrical connections to the test set are made t
13、hrough a single cable 8 feet in length, terminating in a male connector with mating surface pin arrangement and polarity identical to that of the course gyro which it replaces. 3.2 General requirements 3.2.1 Contractor-furnished data. Data required by this specification or by applicable documents re
14、ferenced in Section 2 need not be furnished unless specified in the contract or order (see 6.2). 3.2.2 Preproduction-.samples. Unless otherwise specified in the contract or order preproduction samples of the synchro transmitter shall be manufactured using the methods and procedures proposed for the
15、production lot, These samples will be tested as specified in Section 4 herein and are for the purpose of determining that the production item meets the requirements of this specification and the design. See 4.2.1. 3.2.3 Materials. Unless otherwise specified in the contract, requisition, or order, al
16、l materials and purchased parts entering into the final assembly of the synchro trans- mitter shall conform strictly to the detailed requirements indicated on the drawings and specifications listed in LD 482753. 3.2.4 Finishes, coating, construction, and dimensions. Finishes, coating, construction,
17、and dimensions for the synchro transmitter shall be strictly in accordance with the applicable drawings, specifications, and publications listed in LD 482753. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-19383A (OS) 3.2.5 Moisture, fungus,
18、 and corrosion. The synchro transmitter shall b e rendered moisture, fungus, and corrosion resistant as required by NAVORD OS 6341. 3,2.6 Marking. Marking of assemblies, subassemblies, and parta shall conform to the applicable drawings listed in LD 482753. 3.2.7 Interchangeability. Care should be ex
19、ercised in the fabrication of component parts to obtain proper sizes and to ensure proper fitting and interchangeable assembly of such parts without interference, binding, or misalignment and without resorting to selection or selective fitting. When required by the design, interference fits will be
20、detailed on the applicable drawings. 3,2.8 - Gages. The contractor shall provide himself with whatever gages are necessary and adequate to ensure that the material to which this specification applies will meet the dimensional requirements shown on the applicable drawings. If so stipulated in the con
21、tract, order, or requisition, the government will furnish drawings of pertinent Navy Final Inspection Gages for guidance in the design of the contractors inspection gages. However, such procedure shall not serve to relieve the contractor of his responsibility in the design and manufacture of such ga
22、ges as may be required for the satisfactory fulIillment of the contract requirements, but is intended to facilitate acceptance of all components and assemblies by Navy Final Inspection Gages. 3.2.9 Threads. Unless otherwise specified, all threads shall be in accordance with National Bureau of Standa
23、rds Handbook H28. The class or fit for threads shall be as specified on the applicable drawings, 3.2.10 Conflicting requirements. Conflicting require- ments arising between this specifkation or any specifica- tions, publications, or drawings listed herein shall be referred in writing to the procurin
24、g agency or appointed agent for interpretation, clarification, and resolution (Or correction). 3.3 Definitions. Definitions applicable to environmental requirements of th is specification are defined in MIL-T-945. 4 .-. Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
25、ense from IHS-,-,-3.4 Performance and product characteristics. The synchro transmitter shall meet the following performance and product characteristics: 3.4.1 The synchro transmitter shall be capable of indicating gyro angle at the zero heading within an accuracy of k 10 minutes. 3.4.2 Initial resis
26、tance of the equivalent gyro caging circuit shall be 7.5 2 1 ohms. Upon application of 25 volts dc to the equivalent gyro caging circuit, the line current shall be 1.4 k 0.2 amps. Application of caging voltage shall be indicated at the test set panel by a green lamp. 3.4.3 The insulation resistance
27、between all circuit components and the chassis of the test set shall be not less than 10 megohms. 3.4.4 Operating life. The synchro transmitter shall be capable of meeting operating life requirements as specified in section 3.41.5 of MIL-T-945. 3.5 Environmental requirements. The synchro transmitter
28、 shall be capable of meeting the performance and product characteristics specified herein when tested as defined in Section 4. 3.5.1 Vibration. The synchro transmitter, mounted on a vibration device in accordance with MIL-T-945, shall be subjected to vibrations as specified in MIL-T-945 and be capab
29、le of meeting all specification requirements. 3.5.2 Shock. The synchro transmitter, placed in a shock testing device in accordance with MIL-T-945, shall be subjected to shock tests as specified in MIL-T-945 and be capable of meeting all specification requirements. 3.5.3 Temperature. The synchro tran
30、smitter shall be capable of meeting the following temperature requirements: operation over the range of -2.2 C to +!34.4“C (+28“F to 130F). 3.5.3.1 Synchro transmitter operating. Continuous 3.5.3.2 Synchro transmitter nonoperating. Ranging from -40C to +85“C (-40F to +185“F) for extended periods. 5
31、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-19383A (OS) 3.5.4 Humidity, The synchro transmitter shall be capable of meeting humidity requirements as specified in Section 4 of hiIL-T-945, 3.5.5 Tropical environment. The synchro transmitter s
32、hall be capable of meeting fungus resistance requirements as Specified in Section 4 of MIL-T-945. 3.5,6 Marine environment. The synchro transmitter shall be tested by exposure to the weather deck conditions described in 4.6.5. At the conclusion of the test the synchro transmitter shall be capable of
33、 meeting all performance requirements of this specification. 3.5.7 Storage life. Synchro transmitters, after a storage period of ten years in the prescribed shipping container and five years in the unpackaged condition, both periods to run consecutively, shall be capable of meeting all performance r
34、equirements of this specification. 3,6 Cleanup. Prior to and after final assembly all parts, components, and the assembly shall be thoroughly cleaned of loose, spattered, or excess solder, metal chips, and other foreign matter. Burrs and sharp edges as well as rosin flash shall be removed. 3.7 Workm
35、anship. The equipment, including all parts and accessories, shall be constructed and finished in a manner to ensure compliance with all requirements of this specifi- cation. Particular attention shall be paid to neatness and thoroughness of soldering, wiring, welding, brazing, and freedom of parts f
36、rom burrs and sharp edges. The standards of workmanship exhibited in any approved preproduction sample, subject to any qualification stated in the Govern- ments notice of approval, shall be determinative of the requirements of the contract relative to workmanship insofar as not specifically covered
37、by applicable specifications. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specf ie order, the supplier is responsible for the performance of all inspection require- ments as specified herein. Except as otherwise specified, the supplier may utilize his own faci
38、lities or any commercial laboratory acceptable to the Government, The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to ensure that supplies and services conform to prescribed requirements 6 Provided by IHSNo
39、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-19383A (OS) 4.2 Sampling. Unless otherwise specified, and when applicable, the sampling plans and procedures used by the Government inspector in the determination of the acceptability of products submitted by a su
40、pplier for government inspections shall be in accordance with the provisions set forth in MIL-STD-105. 4.2.1 Preproduction samples. Unless otherwise specified for each contract or order, a representative sample of three synchro transmitters shall be manufactured using the methods and procedures prop
41、osed for the production lot. These shall be submitted to the government inspector for preproduction tests at an activity designated in the contract or by the Naval Ordnance Systems Command for purposes of determining compliance with the requirements of the contract, specifi- cations, and drawings. F
42、urther production of the synchro transmitters by the contractor prior to approval of the contracting activity or the completion of tests on the preproduction samples shall be at the contractorts risk, Preproduction samples accepted will be applied as part of the quantity specified by the contract or
43、 order. 4.2.2 Lot size. As applied to government inspection of units of product, the term lot shall mean “inspection lot,“ i.e., a collection of units of product submitted by a supplier for government inspection. Unless otherwise specified, the number of units of product in “inspection lots“ will be
44、 as determined by the government inspector and may differ from the quantity designated in the contract or order as a lot for production, shipment, or other purpose. 4.2.3 Periodic production samples. From each succeeding lot or grand lot of 100 or less, a random sample of three synchro transmitters
45、will be selected by the Government inspector for submission to a Naval Ordnance Systems Command assigned activity to determine compliance of the samples with the requirements of the contract, specifica- tion, and drawings. The synchro transmitter shall be considered satisfactory if it meets all spec
46、ifications and pertinent drawing requirements, and withstands the tests specified in 4.5 and 4.6 inclusive. 4.3 Classification of tests. The inspection and testing of the synchro transmitter shall be classified as follows: 4.3.1 Quality conformance tests. These tests are to be accomplished on sample
47、 synchro transmitters randomly selected from inspection lots. Quality conformance tests shall be performed by the manufacturer. These tests are detailed in 4.5. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-3433A bb m 4994906 0327938 4 m MI
48、L-T-19383A (OS) 4.3.2 Preproduction and peri0dj.c. production tests. Preproduction and periodic production tests are those which are accomplished on samples selected as specified in 4.2.1 and 4.2.3 which are representative of the production of the synchro transmitter after the award of the contract
49、to determine that the design and the production meet the requirements of this specification. These tests are detail!-d in 4.6. Acceptance shall be based on no defects in the sample. Failure of a sample to comply with these require- ments will result in the rejection of the lot, or the cessation of production as determined by the procuring activity . 4.4 Classification of characteristics. The characteristics verified by the tests and
