1、-, MIL-D-81980 (1) 13 m 9999906 0360278 8 W MILID-8 1980 (AS) Amendment 1 i4 Ausu-st 1975 MILITARY SPECIFICATION DESIGN AND EVALUATION OF SIGNAL TRANSMISSION SUBSYSTEMS: GENERAL SPECIFICATION FOR This amendment forms a part of Military Specification MIL-D-8198O(AS) dated 24 September 1974 and is app
2、roved for use by the Naval Air Systems Command, Department of the Navy. Page 1 Title: After “SUBSYSTEMS add “FOR AIRCRAFT WEAPOK SYSTEMS“. Page 3 2.1: Under STANDARDS, Military, add the following: “ MIL-STD-882 System Safety Program for Systems and Associated Subsystems and Equipment; Requirements f
3、or“ Preclusion of Ordnance Hazards in Electro- magnetic Fields ; General Requirement for“ “ MIL-STD-13 85 2.1: Under STANDARDS, Navy Department, add the following: “NAVWEPS OD-30393 Design Principles and Practices for Controlling Hazards of Electromagnetic Radiation to Ordnance HERO Design Guide1 2.
4、1: Under PUBLICATIONS, add the following: “Naval Air Systems Command (Code Ident 30003) AR 46 HERO (Hazards of Electromagnetic Radiation to Ordnance) Requirements for HERO Tests. Anal y sis and Doc um ent at ion FSC 1377 Provided by IHSNot for ResaleNo reproduction or networking permitted without li
5、cense from IHS-,-,-Y MIL-D-BLSBO (1) L3 = 7999906 03b0279 T MIL-D-81980 (AS) Amendment 1 Page 5 3.6: Line 1, after llensurell add llsafe,ll. Page 6 3.6.4: Line 2, delete Iland reliability11, and substitute “reliability and safety“. Line 3, add llsystem safety,t1 after llcomplexity,ll. Page 7 3.6.9:
6、At the end of the first sentence, add “(see 3.6.10.2)“. 3.6.10: Last line, delete lfpersonnelfl. 3.6.10.2: At the end of the first sentence, add “(see 3.6.9)“. Delete the second and third sentences. Page 8 3. 6.13: Line 2, delete “meet all additional“ and substitute Italso meet all“. Line 3, delete
7、“additional testing required by MIL-E-942611, and substitute lfdemonstration and test requirements of MIL-E-9426 prior to the release of the escape system for installation and service use!. Add the following: 113.6. 14 Precaution for electrical signal transmission subsystems. An electrical STS shall
8、 be protected from the hazards of electromagnetic radiation to ordnance in accordance with the guidelines of NAVWEPS OD-30393. Circuits shall be independently shielded, secured against vibration and protected against short circuits or grounds resulting from chafing. Junctions shall be individually s
9、hielded connections designed to eliminate current leakage from other aircraft circuits, and to minimize the hazards of electromagnetic radiation from radio and radar transmitters and other electrical components aboard ship, shore station, or aircraft.! “3.6.15 Signal transmission subsvstem reliabili
10、tv/maiiitainabilitv and trace- ability programs. STS reliability /maintainability and traceability programs (see 6.3.5) shall be established, implemented, and documented in accordance with the requirements defined by the system contract document. The programs shall be submitted to the cognizant desi
11、gn agency for approval.11 Page 2 of 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-81980 (AS) Amendment 1 !l3.6.16 Signal transmission subsystem design safety. To ensure STS safety, the design shall conform to the general requirements of MIL
12、-STD-882. In identifying potential problems/hazards, the probability of this problem /hazard occurrence shall be documented. It 3.8: Line 5, delete !federal stock numberf1 and substitute “national stock number“. 3.8.1: Line 1, delete llInlet/outlet portsI1 and substitute “Transmission line inlet/out
13、let portsv1. After the first sentence, add “Utilization of female end fittings for transmission lines is preferred. Use of transmission line end fittings of different thread diameters is mandatory. 3.9: Line 3, delete “the following data requirements“. 3.9.1: Line 2, delete “test objectives and desc
14、riptions11, and substitute (I, but need not be limited to, test objectives, descriptions, and failure analysis procedures (see 4.4)ll. Page 9 3.9.3 : Delete “requirements shall be as follows“. Page 10 3.10: Line 2, delete “maintainability (see 3.6.9), reliability“, and substitute ffreliability/maint
15、ainability (see 3.6.9 and 3.6.15). safety (see 3.6. 16)Ii. Page 11 Add the following: “3.13.6 Electromagnetic susceptibility. The electrical STS shall withstand exposure to electromagnetic radiation as specified in 4.7.6. Acceptance criteria for electro-explosive device susceptibility shall be as st
16、ated in MIL-STD-1385. 3.17: Line 6, delete fqtests“. Page 12 3.18: Line 2, add 11(1)“ following “after“. Line 4, after “Table II“ add I; and (2) all cartridges, CADS, electric initiators, andlor associated equipment, as applicable, employed in the STS meet all requirements of MIL-D-21625, MIL-D-2361
17、5, MIL-1-23659 and the detailed design specification, respectively. For capsules and ejection seat types, see 3.6. 13,1 Page 3 of 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-81980 (AS) Amendment 1 . . . . - . - Add the following: “3.19 Ph
18、otographic coverage. Photographic coverage shall be in accordance with 4. 6.“ 1t3.20 Government witnesses. The contractor shall notify the cognizant design agency a minimum of two weeks in advance of each test to permit government witness attendance (see 4.7 and 4.8). I “3.21 Workmanship. Workmanshi
19、p shall be of the highest quality to assure optimum performance, reliability, and safety.“ Page 13 Table II: Delete Table II and substitute the following: Table II SERVICE RELEASE TESTING Test Inspection Electromagnetic susceptibility2 High temperature (ZOOo F) Normal temperature (70“ F) High altitu
20、de Number of STS tes articles rewired 12 Expend to test listed below 1 3 3 3 Applicable sect ion for test procedures 4.5.1 4.7.6 4.8.2 4.8.3 4.8.4 Functional test at . indicated temperature 3 at 200“ F. 3 at 70“ F 3 at -65“ F Discard 1 The two or three STS test articles (see note 2) not allocated to
21、 the desfructive test of Table II are to be used for instrumentation verification and/or investigative purposes, as appropriate. Upon Table II completion, any test articles not expended to functional testing shall be retained or furnished to a designated Navy activity. The master STS test article mo
22、ck-up shall be made available to the testing facility (contractor, independent testing laboratory, or government) for Table 11 tests. 2Nonelectrical STS will not be subjected to this test. Page 4 of 6 - _- I, ._ I c Provided by IHSNot for ResaleNo reproduction or networking permitted without license
23、 from IHS-,-,-L - - MIL-D-8L7BO (1) 13 = 7777706 0360282 T MIL-D-81980 (AS) Amendment 1 Page 14 4.4: Line 4, delete wcomponents(s)ll, and substitute lfcomponent(s)lt. Line 6, at the end of the sentence, add “(see 3.9. l)!?. Page 15 4.5.2: Line 4, at the end of the sentence, add II (see 3.21)“. 4.6:
24、Line 3, at the end of the last sentence, add “, i. e. , high speed photographic coverage of functioning CADS and/or associated equipment containing moving parts (thrusters, pin pullers, catapults, etc. )“. Page 18 Add the following: “4.7.6 EIectromagnetic susceptibility. Instrumented tests in accord
25、ance with AR-46 shall be conducted on one test article for each electrical STS to ensure that the STS will not be degraded by the anticipated electromagnetic environment specified in MIL-STD-1385, and to ensure STS conformance with 3.13.6,II 4.8.1: Line 2, delete “where possible1!. Delete the second
26、 sentence. . 4.8.2: Delete the second sentence. 4.8.3 : Delete the second sentence. Page 19 4.8.5: Delete the last sentence. Add the following: “4.8.6 Reliability/maintainability tests. Tests necessary to demonstrate compliance with reliabilitylmaintainability requirements shall be conducte . accord
27、ance with the approved test plan(s) (see 3.6.15).“ 5.1: Delete the last sentence and substitute, “For associated equipment including transmission lines, packaging, packing, and marking shall be subject to the approval of the cognizant design agency. See 3.9.3.4.1 and 6.4.l 6.2: Delete and substitute
28、 the following: “6.2 Ordering Data. 6.2.1 Signal transmission subsystem ordering data. Procurement documents should specify the following: Page 5 of 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. F . MIL-D-81980 (AS) Amendment 1 a. Title, number
29、, and date of this specification. b. Selection of applicable level of packaging and packing and marking requirements for service release testing, See section 5. c. Quantity (see table II). d. Data requirements (see 3.9). 6.2.2 Associated equipment ordering data. Procurement documents should specify
30、the following: a. Title, number, and date of this specification. b. Selection of applicable level of packaging and packing and marking requirements. See section 5. c. Quantity per pack. d. Data requirements (see 3.9.3 and 3.9.4). Page 20 Add the following: “6.3.5 Signal transmission subsystem tracea
31、bility. To ensure the exact location aircraft model number, aircraft bureau number, system application (see 1. i), etc. of each installed STS cartridge, CAD, electric initiator, transmission line, and/or associated equipment, as applicable, all appropriate information marked on each individual item
32、(nomenclature, national stock number /federal supply code number. contract number, lot number, serial number, and date of manufacture) shall be recorded and submitted to the cognizant design agency or designated Navy activity responsible for maintaining the STS traceability program.“ 6.5: Delete the
33、 first sentence. Add the following: l6.5.3 For cartridge and CAD CFE, refer to MIL-D-21625 and MIL-D-23615, respectively. II Custodian : Preparing activity: Navy - AS NAW - AS *U. C. GOVERNMENT PRINTING OFFICE 1975 -603-766/1074 . A , - - _ Page 6-of 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
