1、MIL-T - 8 1624 (AS) 18 March 1969 MILITARY SPECIFICATION TELEVISION DISPLAY REQUIREMENTS FOR THE WEAPON SYSTEM FOR GUIDED WEAPON MARK 1 MOD O AND MOD 2 (WALLEYE) This specification has-been approved by the Naval Air Systems-Command, Department of the Navy 1. SCOPE 1.1 Scope - This specification stat
2、es the general performance requirements for all aircraft television displays used in conjunction with Guided Weapon Mk 1 Mod O and Mod 2 (WALLEYE). requirements are covered; no sentation (radar displays and modified television displays) are specified. Only WALLEYE television display other requiremen
3、ts for alternate modes of pre- 1.2 Classification - The WALLEYE television displays shall be of the following types: Type I Type II - Modified television displays Type III - WALLEYESdisplay only - Modified radar displays 2, APPLICABLE DOCUMENTS 2.1 General - The following documents of the issue in e
4、ffect on the date of invitation for bids, form a part of this specification to the extent specified herein. SPECIFICATIONS Military - MIL-E-5400 Electronic Equipment, Aircraft, General Specification for MIL-T-5422 Testing, Environmental, Aircraft Electronic Equipment FSC 5821 1 5 I 1.7179 Provided b
5、y IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-81624 (AS) ML-M-7793 . Meter, Time Totalizing M?. L- 3. - 8 500 Interchangeability and Replaceability of Component Parts for Aircraft and Missi les Associated Repair Parts, Preparation for Delivery of MIL-T
6、-18303 Test Procedures; Preproduction and Inspection, for Aircraft Electronic Equipment, Format for nautical Electronic and Associated Equipment MIL- E- 17555 Electronic and Plectrical Equipment and MIL-N-18307 Nomenclature and Nameplates for Aero- STANARD S Military - MIL- STD-461 Electromagnetic I
7、nterference Character- istics - Requirements for Equipment MIL- STD-704 Electric Power, Aircraft, Characteris- tics and Utilization of MIL-STD-756 Reliability of Weapons Systems, Pro- cedures for Prediction and Reporting Prediction of MIL- STD-781 Reliability Tests - Exponential Distri- MIL- STD - 7
8、 94 Parts and Equipment, Procedures for Naval Air Systems Command bution Packaging and Packing of AR-5 AR- 8 AR- 9 AR- 10 Microelectronic Devices Used in Avionics Equipment, Procedures for Selection and Approval of Versatile Avionics Shop Test System, Avionics Systems Compatibility, General Requirem
9、ents for Versatile Avionics chop Test System Test Program, General Requirements for Maintainability of Avionics Equipment and Systems, General Requirements for 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-PUBLICATIONS Military handbooks - MIL-HD
10、BK-217 Reliability Stress and Failure Rate Data for Electronic Equipment MIL-HDBK-472 Maintainability Prediction Naval Air Systems Command EI-443 Avionics Installation Instructions for WALLEYE Guided Weapon System 2.2 Precedence of documents - When requirements of the contract, this specification, o
11、r applicable subsidiary specifications are in conflict, the following precedence shall apply: (a) Contract: The contract shall have precedence over any specification. (b) This specification: This specification shall have precedence over all applicable subsidiary specifica- tions. Any deviation from
12、this specification, or from subsidiary specifications where applicable, shall be specifically approved in writing by the procuring activity. (c) Referenced specifications: Any referenced specifica- tion shall have precedence over all applicable sub- sidiary specifications referenced therein. All ref
13、erenced specifications shall apply to the extent specified. . 2.3 Availability of documents - (a) When requesting specifications, standards, drawings, and publications refer to both title and number. Copies of applicable specifications required by con- tractors in connection with specific procuremen
14、t functions may be obtained upon application to the Commanding Officer, Naval Supply Depot, Code 105, 5801 Tabor Avenue, Philadelphia, Pennsylvania 19120. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-T-8Lb24 58 9 777770b 0440577 i W I v MI
15、L-T -81624 (AS) 3. REQUIREMENTS 3.1 Preproduction Cesting - This specification makes provision for preproduction testing. 3.2 Parts and materials - In the selection of parts and materi- als, fulfillment of major design objectives shall be the prime consideration. In so doing, the following shall gov
16、ern: (a) Microelectronic items shall conform to requirements specified herein. (b) Other parts and materials requirements shall conform to MIL-E-5400. (c) Nonrepairable subassemblies, as outlined in MIL-E-5400, shall be used when practicable. the subassembly ahd the amount of circuitry to be include
17、d therein shall be approved by the procuring activity. Non-repairable subassemblies must be reliable. (See 6.4.) The general size of (d) When previously produce models of this equipment did not use nonrepairable subassemblies, the design shall not be changed to employ nonrepairable assemblies withou
18、t the approval of the procuring activity. 3.2.1 Nonstandard parts and materials approval - Approval for the use of nonstandard parts and materials shall be obtained as outlined in MIL-E-5400. 3.3 Design and construction - The equipment shall conform with all the applicable requirements of MIL-E-5400
19、 for design, construction and workmanship, except as otherwise specified herein. 3.3.1 Total weight - Total weight of the equipment, excluding cables, shall be a minimum consistent with good design. 3.3.2 Reliability - The Mean- (operating) Time-Between- Failure (MTBF) requirement for the television
20、 display shall be met when tested in accordance with 4.4.3 of this specification. All television display design activities shall be aimed at an objective of achieving an inherent reliability of the television display equal to the nominal (Design Goal) MTBF requirement. Reliability predictions, in fu
21、ll accordance with MIL-STD-756 and the “detailed stress analysis prediction procedure of MIL-HDBK-217, shall be utilized as design tools in achievement of the nominal (Design Goal) MTBF requirement, economically feasible effort shall be exercised during production to cause a reliability growth towar
22、d the nominal MTBF requirement. Every 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 MIL-T-81624 58 9499906 0440578 4 I l 3.3.2.1 Minimum MTBF - The Mean.(Operatingl Time Between Failures (MBF) shall be at 1-t-135 operating hours when demonstrat
23、ed in accordance with 4.4.3 herein. 3.3.2.2 Nominal MTBF (design goal) - The nominal MTBF shall be 935 operating hours in an airborne environment. 3.3.3 Operatianal stability - The equipment shall operate with satisfactory performance, continuously or intermittently, for a period of at least; 135hou
24、rs without the necessity for readjustment of any controls which are inaccessible to the operator during normal use. 3.3.4 Operating life - The equipment shall have total operating life of 2,500 hours with reasonable servicing and replacement of parts. requiring scheduled replacement shall be specifi
25、ed by the contractor. Parts 3.3.5 Time totalizing meter - The equipment shall contain a time totalizing meter in accordance with MIL-M-7793. 3.3.6 Cabling and connections - 3.3.6.1 Cables and connectors - The equipment shall provide for the use of cables and connectors in accordance with MIL-E-5400
26、and EI-443. 3.3.6.2 Interconnection cabling - The equipment shall be capable of satisfactory operation using external wiring in accordance with the applica- ble requirements of EI-443. 3.3.7 Interchangeability - Initial designs for the Type I and Type II displays shall be physically interchangeable
27、with umdified indicators of the same type. Initial designs fort the Type III displays shall meet the interchangeability and replaceability requirements of MIL-1-8500. 3.3.7.1 Interchangeability of reordered equipment - For reordered equipment, interchangeability shall exist between unite and all rep
28、laceable assemblies, subassemblies, and parts of a designated model of any previously manufactured equipment, supplied or designated by the procuring activity. 3.3.8 Interference control - The generation of radio interference by the equipment and the vulnerability of the equipment to radio interfere
29、nce shall be controlled within the limits of MIL-STD-461. 3.3.9 Provisions for Maintainability - The Maintainability Pro ram built-in test featur and ackaging, provisions for test oinfs, and other maintainab- shalf be as specified in SpecificatPon AF.-O. 3.3.9.1 Mean-time-to-repair (MTTR) - The Mean
30、-Time-To-Repair (MTTR) of the equipment shall be no greater than 2 hours when faulty modules, 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-BLb24 58 999930b 0440579 b z MIL-T-81624 (AS) assemblies, and parts intended for replacement are rep
31、laced at the intermediate level. A prediction of MTR shall be made in accordance with MIL-HDBK-472 Pro- cedure 111. 3.3.9.2 Compatibility with VAST - The equipment shall be compatible with the Versatile Avionic Shop Test System (VAST) and shall meet the requirements of Specification AR-8. in accorda
32、nce with Specification AR-9. ment, and changes to the equipment are made which will affect the fault diagnosis procedure, changes to the existing Test Program shall be prepared as part of the equipment changes in accordance with Specification AR-9. plate approval for equipment identification shall b
33、e in accordance with MIL-N-18307. under any of the environmental service conditions or reasonable combination of these conditions as specified in MIL-E-5400 for Class 2 aircraft equipment. Vibration - The equipment shalJ operate satisfactorily when subjected to the vibration requirements of curve 1
34、of Specification MIL-E-5400, Standard conditions - The following conditions shall be used to establish normal performance characteristics under standard conditions and for making laboratory bench tests: When required by contract VAST Test ProgrLuos shall be furnished If VAST Test Programs exist for
35、the equip- 3.3.10 3.3.11 Nomenclature and nameplates - Nomenclature assignment and name- Service conditions - The equipment shall operate satisfactorily 3.3.11.1 3.3.12 (a) Temperature: RJom ambient (253 5 Centigrade (CI). (b) Altitude: Normal ground. (cl Vibration: None. (d) Humidity: Room ambient
36、up to 90 percent relative humidity. (e) Input power voltage: 115.0 k 1.0 volts, 400 -4 40 cps, Warm-up time- The time required for the equipment to warm up prior to operation shall be kept to a minimum and shall not exceed 5 minutes under standard or extreme service conditions. and 27.5 % 0.5 volts
37、d-c. 3.3.13 3.3.14 Primary input ower requirements - The equi ment shall meet all applicable requiremen s o - a s a give s ecified erformance when supplied with power with ih Mode II: The equipment operated, following a typical mission operating profile, for a 4-hour period from the time of stabiliz
38、ation at the high temperature limit. Accelerated reliability testing by a shortened duty cycle with operation in- creased to full stress is encouraged and recommended, provided the test plan is approved by the procuring activity. J! 15 Provided by IHSNot for ResaleNo reproduction or networking permi
39、tted without license from IHS-,-,-MIL-T-BLh2g 58 H 7777906 Y40587 7 H ?IL-I -81624 (AS) 4.4.3.5 Test Details - The test details such as the length of the test c.Jc?., the length of the heat portion of ehe cycle., the performance characteristics $1:; !E measured, special failure criteria, preventive
40、maintenance to be allowed c:;i-:.:i3 the procur.ing activity prior to the beginning of the Walification Test ?-Lac:? OE tze Reliability Assurance Tests. ._ 5.4.3.6 Equipment performance - The performance requirements spzc5fi.d in 3.4 shall be measured. The performance requirements shall be met . -13
41、 +mperatures from -54 to f71 Centigrade. 4.4.3.7 Failure criteria - In addition to the requirements of “L-?LD-781, equipment failure shall have occurred when performance does not i - n r - the requirements of 3.4 with the inputs varied between specified extremes. 4.4.4 Special tests - Special tests
42、shall be conducted on a ;:nity of equipments for the purpose of checking the effect of any design or s:;i:.srial change on the performance of the equipment and to assure adequate qunlicy control. The equipment selected for special tests may be selected fiem equipments previously subjected to the sam
43、pling or reliability assurance cests. 4.4.4.1 Special test schedule - Selection of equipmeats for special tests shall be made as follows: (a) On an early equipment after an engineering or material change. (b) Whenever failure reports or other information indicate additional tests are required, as de
44、termined by the procuring activity. 4.4.4.2 Scope of tests - Special tests shall consist of those as approved by the procuring activity. Test procedures previously approved for the preproduction tests shall be used where applicable. the contractor shall prepare a test procedure and submit it to the
45、procuring activity for approval prior to conducting the tests. When not applicable, 4.4.5 Equipment failure - Should a failure occur during either the sampling, reliability assurance, or special tests, the contractor shall: (a) Determine the cause of failure. (b) Determine if the failure is an isola
46、ted case or design defect. (c) Submit to the procuring activity for approval, pro- posed corrective action intended to reduce the possibility of the same failure(s) occurring in future tests. (d) Where practical, include a test in the individual tests to check all equipment for this requirement L 16
47、 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL- T- 81624 (AS) . Quantity of Equipments Offered for Acceptance First 25 Next 175 Next 300 until reasonableassurance is obtained-that the de- fect has been - satisfactorily corrected. - - _ Quantity
48、 to be Selected for Life Test 1 1 1 1 for each additional 500 or fraction thereof 4.5 Life test - The contractor shall furnish all samples and shall be responsible for accomplishing the life test. 300-hours duration and shall be conducted on equipments that have passed the individual tests. specifie
49、d in 4.5.1. production tests, sampling tests, reliability tests, - _. or . - special tests may be selected for life tests. may be omitted if, during the reliability tests, a quantity of equipments equal to, or more than, that listed in table II receive at least 300 hours each of test time. inspector in accordance with table II. The test shall be of The life test shall be performed under the conditions Equipments which
