1、! i MILITARY Initiator, Destruct Igniter . MX-8278 (*)/ASQ This specification has been approved by the Naval Air Systems Command, Department of the Navy 1. . SCOPE 1.1 Scope - The equipment covered by this specification shall be capable of transferring stored energy to a maximum of ten electrical de
2、struct igniters located in electronic equipments within a vehicle. power transfer shall be initiated by a command from electrical inputs or vehicle environmental stimuli. The 2. APPLICABLE DOCUMENTS 2.1 General - The following documents, of the issue in effect on the date of invitation for bid, part
3、 of this specification to the extent specified herein. SPECIFICATIONS form a Military MI L-W- 5088 wiring ; Aircraft, installation of Electronic Equipment, Aircraft / 6 MIL-E-5400 F General Specification for THIS DOCUMENT CONTAINS 24 PAGES. b -_ 1 1. *.; FSC53l r: Provided by IHSNot for ResaleNo rep
4、roduction or networking permitted without license from IHS-,-,-MIL-I-36Lb 58 W 7979906 0373475 2 MIL-1-81616 (AS) MIL-1-6181 MIL-E-17555 MIL-T-18303 MI L-N- 18 3 O 7 Testing , Envir onmenta 1, Aircraft Electronic Equipment Interference Control Require- ments Aircraft Equipment Electronic and Electri
5、cal - . Equipment and Associated Repair Parts, Preparation for Delivery of Test Procedures : Pr epr oduct jan and Inspection, for Aircraft Electronic Equipment , Format for N omenc latur e and Nameplates for Aeronautical Electronics and Associated Equipment STANDARDS Military MIL-STD-130 identificat
6、ion Marking of U. S. Military Property Characteristics and tili- zation MI L- STD - 7 O 4 Electric Power, Aircraft, MIL-STD-810 Military Standard Environ- mental Test Methods for Aerospace and Ground Equipment for Packaging and Packing of MIL-STD-794 Parts and Equipment, Procedures Availability of D
7、ocuments - When requesting specif i- cations, standards, drawings, and publications, refer to both title and number. Copies of this specification and applicable specifications required by contractors in connection with specific procure- ment functions may be obtained upon application to the Commandi
8、ng Officer, Naval Supply Depot, code 105, 5801 Tabor Avenue, Philadelphia, Pennsylvania 19120. 2.2 - -2- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-Lb1b 58 7777706 OL7LLi76 MIL-1-81616 (AS ) 2.3 s 3. 3.1 3.2 ./ - Precedence of Documents -
9、When the requirements of the contract, this specification, or applicable subsidiary specifications are in conflict,. the following precedence shall apply: (i) Contract: The Contract or purchase order. shall have precedence over any specifi- cation. - (2) This Specification: This specification shall
10、have precedence over all applicable subsidiary specifications. Any deviatians from this specification, or from sub- sidiary specifications, where applicable, shall be specifically approved in writing by procuring activity. (3) Referenced Specifications : Any referenced specifications shall have prec
11、edence over all applicable subsidiary specifications referenced therein. All referenced specifications, where applicable, shall apply to the extent specified. REQUIREMENTS Preproduction - This specification makes provision for preproduction testing. Parts and Materials - In the selection of parts an
12、d materials, fulfillment of major design objectives shall be the primary consideration. the following shall govern: In so doing, (1) Microelectric items shall conform to requirements specified herein. (2) Other parts and materials requirements shall conform to MIL-E-5400. . (3) Nonrepairable subasse
13、mblies, as outlined in MIL-E-5400, shall be used when practicable. subassembly and the-amount of circuitry to be included therein shall be approved by the procuring activity. Nonrepairable subassemblies must be reliable (see para- graph 3.3.5 of this specification). The general size of the (4) When
14、previously produced models of this equipment did not use nonrepairable sub- assemblies, the design s3all not be 7 -3- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-1-81616 (AS) 3.2.1 3.3 3.3.1 3.3.2 3.3.3 3*3.4 3.3.5 changed to employ nonrepair
15、able assem- blies without the approval of the procuring activity. Nonstandard Parts and Materials Approval - Approval for the use of nonstandard parts and materials including transistors and diodes shall be obtained as outlined in MIL-E-5400. - Desiqn and Construction - The ID1 shall conform with al
16、l the applicable requirements of Specification MIL-E-5400 except as otherwise specified herein. . Total Weiqht - The total weight of the IDI, exclud- iria cables, shall be a minimum consistent with god design and shall not exceed 6.3 pounds. Form Factor - The ID1 outline and overall dimensions shall
17、 conform to those specified in Figure 1. Cabling and Connectors - The ID1 shall provide for the use of cables and connectors in accordance with MIL-E-5400. The ID1 shall be capable of satis- factory operation using external wiring in accordance with the applicable requirements of MIL-W-5088. The ext
18、ernal wiring shall be unshielded, except that a minimum number of the individual wires may be shielded when demonstrated as necessary to meet interference control requirements and provided the assembly of the cable to its plugs may be easily accomplished. External cables and that portion of the conn
19、ectors attached to the cables shall not be supplied as part of the equipment. . identification - a. Marking shall be in accordance with MIL-STD-130 and shall consist of the information shown in Figure i. Nomenclature assignment and nameplate approval for equipment identification shall be in accordan
20、ce with MIL-N-18307. b. . Nonrepairable Subassemblies - As a general rule, nonrepairable subassemblies shall be encapsulated or hermetically sealed. internal to the subassembly should be held to a minimum. be so selected that the life of the subassembly is greater than that of a similar repairable o
21、ne. The number of connections .- Detail part tolerances and ratings should -4- /- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-8L6L6 58 33337Ob 0373438 8 W MIL-1-81616 (AS) 3.3.6 Operating Life - The ID1 shall have a total oper- ating life o
22、f 2,000 hours- with reasonable servicing and replacement of parts. replacement shall be specified by the Contractor. Parts. requiring -scheduled 3.3.7 . Maintenance Provisions and Field Testing - Provisions for maintenance shall be as specified in MIL-E-5400.- Specific test points and test facilitie
23、s shall be provided to the greatest extent practicable for ease of field testing and maintenance. Performance - Unless otherwise specified, values set forth to establish the requirements for satisfactory performance apply to performance under both standard and extreme service conditions. formance un
24、der the extreme conditions is acceptable, tolerances or values setting forth the acceptable variations from the performance under the standard conditions will be specified. 3.4 When reduced per- 3.4.1 3.4.2 Standard Conditions - The following conditions shall be used to establish normal performance
25、characteristics under standard conditions and for making laboratory bench tests. Temperature : Altitude : Normal ground Room ambient (25 C 2 5 C) Vibration: None Humidity : Room ambient up to 90% . relative humidity Imput Power: 27.5 0.5 VDC Destruct Control Circuit - The minimum requirements of the
26、 associated destruct control circuit for the ID1 shall be as follows: ,a The destruce control circuit shall include a . landing gear switch and an ejection seat switch. Connection of the associated destruct control circuit to the ID1 shall be as illustrated in Figure 2. b. -5- Provided by IHSNot for
27、 ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-1-81616 (AS) c. The landing gear switch shall apply a ground to pin R of ID1 connector J3 when in the SAFE (wheels down) position, and shall remove the ground from pin R of ID1 connector 53 when in the ARM (wheels up) po
28、sition. Wirin between the landing gear switch and the ID1 shall be shielded. -. d. The ejection seat switch shall interrupt the destruct initiate circuit between pins C and D of ID1 connector J2 when in the NORMAL position, and shall complete the destruct ?initiate circuit between pins C and D of ID
29、1 connector 52 when in the EJECT position. Wiring?between the ejection seat switch and the ID1 shall be shielded. 3.4.3 3.5 3.5.1 Environmental Stimuli Control - The environmental stimuli of altitude and shock impact shall control the ID1 operation as follows: a. Altitude shall control operation of
30、the ID1 by providing a stimulus to interrupt the destruct initiate circuit internally between pin A of connector J1 and pin C of connector J2 while the equipment is at an altitude exceeding a specified value. Shock impact shall control operation of the ID1 by providing a stimulus to complete the des
31、truct initiate circuit internally when the equipment is subjected to shock impact exceeding a specified va lue. b. Detail Requirements - The ID1 shall meet the following requirements : Function - The ID1 shall function as a.centra1 destruct control for several associated equipments employing electri
32、cal destruct igniters and located in the same aircraft by controlling the transfer of destruct power from an associated destruct power source to the elec- trical destruct igniters in associated equipments in accordance with environmental stimuli of altitude and shock impact and associated destruct c
33、ontrol circuits. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-I-161b 5 m 7977706 0171500 2 m MIL-1-81616 (AS) 3.5.2 Destruct Safe - The ID1 shall not transfer destruct power from the associated destruct power source to electrical destruct igni
34、ters in associated equip- ments under any condition when the landing gear switch of Figure 2 is in the SAFE position. 3.5.3 Destruct Arm - The ID1 shall be armed and capable of initiating destruct action in associated equipments when the landing gear switch of Figure 2 is in the ARM position. 3.5.4
35、Destruct Initiate - The ID1 shall transfer destruct power from the destruct power source to electrical destruct igniters in associated equipments to initiate destruct action in the associated equipments under the following conditions: a. b. C. -22- Provided by IHSNot for ResaleNo reproduction or net
36、working permitted without license from IHS-,-,-MIL-1-61616 56 W 7777706 0171506 3 m MIL-1-61616 (AS) 4. 2 2 . .C . 4.2.3 4.2.4 4.3 4.3.1 Scope of Tests - Preproduction tests shall include -all Tests deemed necessary by the procuring activity - to determine that the equipmnt meets all the require- me
37、nts of this specification and the contract. Pre- production tests shall include environmental tests . in accordance with the procedures of MIL-T-5422 and interference tests in accordance with MIL-1-6181. Preproduction Approval - Approval of the preproduction sample shall be by the procuring activity
38、 upon satis- factory completion of all tests. equipments shall be delivered prior to the approval of the preproduction sample. production equipment prior to the approval of the preproduction sample is at the contractors own risk. The approved preproduction sample shall be retained by the contractor
39、for his use in the fabrication and testing of equipment to be submitted for acceptance. The preproduction sample shall not be considered as one of the equipments under the contract. No production Prefabrication of . Production Equipments - Equipments supplied under the contract shall in all respects
40、, including design, construction, workmanship, performance and quality, be equivalent to the approved preproduction sample. Each equipment shall be capable of successfully passing the same tests as imposed on the preproduction sample. Evidence of non-compliance with the afore- * mentioned shall cons
41、titute cause for rejection. For equipment already accepted by the Government, it shall be the obligation of the contractor to make necessary corrections as approved by the procuring activity . Initial Production Tests - One of the first ten production equipments shall be selected and sent at the con
42、tractors expense to -a designated Government laboratory for tests. selected by the procuring activity after the equip- ment has successfully passed all individual tests. The preproduction sample shall not be selected for this test. This equipment shall be Scope of Tests - This equipment may be subje
43、cted to any and all tests the procuring activity deems necessary to assure tkat the production equipment is equivalent to the previously approved prepro- duction sample in design, construction, workmanship, perfoqance and quality and that it meets all appli- cable requirements. Provided by IHSNot fo
44、r ResaleNo reproduction or networking permitted without license from IHS-,-,-b flIL-I-BL61h 58 m 9797906 0373507 5 m 4. 3.2 Accessory Material - In addition to the complete equipment submitted-for- Initial -Production Tests the contractor shall also-submit such accessory material and data necessary
45、to test _. the equipment. ! 4.3.3 4.3.4 4.4 Initial Production Sample Approval - Approval of the Initial Production Sample shall be by the procuring activity upon satisfactory completion of all tests. Any design, material or performance defect made evident during this test shall be corrected by the
46、contractor to the satisfaction of the procuring activity. to pass any f the tests shall be cause for deliveries of equipment under the contract to cease until proper corrective action is approved and accomplished. Corrective action shall also be accomplished on equipment previously accepted when req
47、uested by the Failure of the initial production sample - procuring activity. Reconditioninq of Initial Production Test Sample - On completion of the initial production test the equipment shall be reworked by the contractor by replacing all worn or damaged items. After reworking, the contractor shall
48、 resubmit the equipment for acceptance. Acceptance Test - The contractor shall furnish all samples and shall be responsible for accomplishing the acceptance tests. shall be under the supervision of the Government inspector. satisfactory to the procuring activity shall engage the service of a commerc
49、ial testing laboratory acceptable to the procuring activity. shall furnish test reports showing quantitative results for all acceptance tests. be signed by an authorized representative of the contractor or laboratory, as applicable. Acceptance or approval of material during the course of manu- facture shall not be construed as a guarantee of the acceptance of the finished product. accept
