1、MIL-F-81757 47 7777706 025b943 1 mj - MIL-F-EI1959 (AS) 14 January 1974 MI LI TARY SPEC I FI CAT I ON FIXTURE, CABLE KAINTENANCE MX-9516/ASQ-81 (V) This specification has been approved by the Idaval Air Systems Comnand, Department of the Navy 1. SCOPE herein after referred. to as the equipment, cove
2、red by this specification shall be utilized for organizational level use and shall facilitate testing and maintenance of the RL-305A/ASQ-81 (V) Reeling Machine Magnetic Detector Launching . 1.2 shall consist of %he following item: Type Designation Applicable Paragraph 1.1 Scope - The MX-9516/ASQ-81
3、(V) Cable Maintenance Fixture, Classification - The equipment covered by this specification Fixture , Cable Maintenance MX-9516/ASQ-81 (V) 3.5.1 Case, Cable Maintenance Fixture 3.5.2 1.3 Associated Equipment - This equipment shall operate with the associated equipment listed in 6.9. 2. APPLICABLE DO
4、CUMENTS 2.1 the data of invitation for bids form a part of this specification to the extent speci fied herein : General - The following documents of the issue in effect on SPEC IF I CAT IONS Mi 1 i tary MI L-W-5088 MIL-T-5422 Testing , Envi ronmental , Aircraft Wiring; Aircraft, Installation of Elec
5、tronic Equipment FSC 4931 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L - M -7 7 9 3 MIL-E-17555 MIL-T-18303 MIL-N-18307 MIL-T-21200 MIL-STD-461 MI L-STD - 90 1 MS17322 MIL-STD-756 PUBLLCATIONS Meter, Time Totaliz iig Electronic and Elec rica1
6、 Equipmnt and Associ ated Repai r Parts, Preparati on for Delivery of Test Procedures ; Preproduction and Inspec- tion, for Aircraft Electronic Equipment, Format for Nomenclature and Nameplates for Aeronauti- cal Electroni c and Associated Equipment Test Equipment for Use with Electronic and Fire Co
7、ntrol Systems, General Specifica- tion for El ectroni c Interference Characteristics , Requirements for Equipment Preferred and Guidance Lists of Semicon- ductor Devi ces Meter, Time Totalizing 115 Volt, 400- “ycle, Rev. B ReliabiTity Prediction Naval Air Systems Command. AR-5 Microelectronic Device
8、s Used in Avionic Equipment, Procedures for Selection and Approval of MIL-HDBK-217 Availability of Documents - When requesting specifications, standards, drawings and publications refer to both title and number. Copies of this specification and applicable specifications required by contractors in co
9、nnection with specific procurement functions may be obtained upon application to the Commanding Officer, Naval Supply Depot, Code 105, 5801 Tabor Avenue, Phi 1 adel phi a, Pennsyl vani a. Reliability Stress and Failure Rate Data for Electronic Equipment 2.1.1 3. REQU I RiMENTS preproduction testing.
10、 3.1 Preproduction - This specification makes provision for 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-1759 99 M 3777706 0256945 5 M 3.2 Parts and Materials - Ir the selection of parts and materials, fulfillment of major design objective
11、s shall be the prime consideration. so doing the following shall govern: Parts and materials requirements shall conform to In (i) MIL-T-21200. (2) Nonrepairable subassemblies, as outlined in MIL-T-21200, shall be used when practicable. The general size of the subassembly and the amount of circuitry
12、to be included therein shall be approved by the procuring activity. Nonrepairable subassemblies must be reliabile (See 6.4). not use nonrepairable subassemblies, the design shall not be changed to employ nonrepairable assembl ies wi thout the approval of the procuring activity. use of nonstandard pa
13、rts and materi al s other than mi croel ectroni c devi ces shall be obtained as outlined in MIL-T-21200. (3) When previously produced models of the equipment did 3.2.1 Nonstandard Parts and Materials Approval - Approval for the 3.2.2 Electroni c Devi ces - Electron tubes and semi conductor devi ces
14、shall be in accordance with MIL-T-21200 or MIL-STD-454, Req. 30. 3.2.3 ment shall be divided into mainw,ia.ice modules as specified in AR-10 (See MIL-S-23603). Modules. shall normally be considered repairable. Modules, Mainte_n?y_r.g - The electronic portions of the equip- 3.3 all the app workmanshi
15、p 3.3. a min case. Design and Construction - The equipment shall conform with i cab1 e requirements of MIL -7-21200 for design, construction and except as otherwise specified herein. Total Weight - Th mum consistent with good des 3.3.2 3.3.2. ? Operational Stabi Re 1 i abi 1 i ty total weight of the
16、 equdpment shall be gn and shall not exceed 90 pounds including ity - The equipment shall operate with - satisfactory ?erformanCe, continuously or intermittently for a period of at least 1,000 hours without the necessity for readjustment of any controls which are inaccessible to the operator during
17、normal use. operating life of 10,000 hours with reasonable servicing and replacement of parts. ment shall have a3nimum of 5,000 hours mean (operating) time between failures, This requi rcnent shall be veri -Tied by mathematical analysis in accordance with the provisiocs of MIL-STD-756 and MIL-HDBK-2
18、17. 3.3.2.2 Operating Life - The equipment shall have a minimum total 3.3.2.3 Reli?bSity in Mean Time Between Failure (MTBF) - The equip- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-F-81959 LI9 949970b 025b94b 7 m MIL-P-81959 (AS) 3e3.3 Time
19、 Totalizing Meter - The equipment shall have a time 3,3*4 Cales and Connectors - The equipment shall provide for total i zi ng meter in accoi-dance with MIL-STD-454, Req. 57. the use of cablri and connectors in accordance with MIL-T-21200. 3.3.5 Wiring (:terna:$ - Internal wiring shall be in accorda
20、nce requ-iremnts of IL-T-2 OO. with the 3 with the 3 ch an geab A 3.6 requi rements o Wiringf(;e;AB$: External wiring shall be in accordance 3.7 lity requirements as defined in MIL-T-21200. Interchangeability - The equipment shall meet the inter- 4.3.8 by the equipment the extent descr by Table II o
21、f M 3,3.8.? Interference Control - The generati on of radio interference shall be controlled within the limits of MIL-STD-461 to bed herein, Tests required shall be as defined for Class II B equipment L-STD-461A except that electromagnetic and E-field emissions shall not exceed the limits establishe
22、d by MIL-STD-461A for Class II B equip- ment by More than 30 d8, 3.3.9 Maintenance Provisions and Field Testin - Provisions for maintenance shall be as Specified in MIL-T-21200. Specific test points and test facilities shall be provided to the greatest extent practicable for ease of field testing an
23、d maintenance, 3.3.10 nameplate approval for equipment identification shall be in accordance with Nomenclature and Nameplates - Nomenclature assignment and MIL-N-18307, 3.3.11 Standard Conditions - The following conditions shall be used to establish :ormal performance characteristics under standard
24、conditions and for making lasoratory bench tests: Temperature Al ti tLrie Vi brati on Humi di *.y Input power vol tage Room ambient (30“ 2 10C) Normal ground None Room ambient 115 -t 1.0 VAC (line to neutral), 3 Phase, 400 5 Hz 3.3.12 Service Conditions - The equipment shall operate satisfactorily u
25、nder any of che envi rowent service conditions or reasonable combination of these conditions as specified in MIL-T-21200 for Class 2 equipment, except as modified herein. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.3.13 Warm-up Time - The tin
26、e required for the equipment to warm up prior to operations shall be kept to a minimum and shall not exceed 5 minutes under standard conditions and 10 minutes at extreme service conditions. 3.3.14 rimary Input Power Requirements - The equipment shall be capable of sat; sfactory operation when suppl
27、ied input power having character- istics as tiefined in MIL-T-21200. type and shall not exceed the specified amounts. The power required shall be of the following AC Power, 3 Phase, 115 V, 380-420 tiz, 525 VA 3.4 set forth below. under both standard and extreme service condi tions. Performance - The
28、 performance of the equipment shall be as Unless otherwise specified, these requirements shall apply When reduced performance requirements for service conditions are acceptable, such variationwill specified. 3.5 Detail Requirements be 3.5.1 Fixture, Cable Maintenance MX-9516/ASQ-81 (V) - The equ sha
29、ll meet the following requirements: 3.5.1.1 Function - The function of the equipment is to aid remova installation and inspection of tho ow cable on the RL-305A/ASQ-81(V) Reel Machine without degrading the caD I e. by 31.5 inches long, not including case. 3.5.1.2 Maximum Form Factor - 13.5 inches wi
30、de by 10.5 inches high nt or ng 3.5.1.3 Weioht - The weiaht of the test set shall not exceed 45 pounds, - not including case. I 3.5.1.4 Finish - Hard Anod 3.5.1.8 Contents - The equ circuits or assemblies: ze per MIL-A-8625. pment shall contain the following functional (1) Torque Motor - The equipme
31、nt shall contain a D.C. torque motor c:xi gear train which drives the cable drum with sufficient torque to overcome the cable undertension switch of the Reeling Machine RL-305A/ASQ-81 (V) while reeling cable out/in at the slow speed reeling rate and at stall. Dis la s - The equipment shall contain a
32、 POWER ON indicator light “.y, be equivalent to the approved preproduction sample. Each equipment shsi be capable of successfully passing the same tests as imposed on the pix?production sample. Evidence of non-compliance with the above shall mstitute cause for rejection and for equipmerit already ac
33、cepted by the Government, it shall be the obligation of the contractor to make necessary corvections as approved by the procuring activity. and shall be responsible for accomplishing the acceptance tests. All inspection and testing shall be under the supervision of the government inspector. Con- ti
34、actors not having testing facilities satisfactory to ;he procuring activity snall engage the service of a comercial testing laboratory acceptable to the procuring activity. The contractor shall furnish test reports showing quan- titative results for all acceptance tests. Such reports shall be signed
35、 by an authorized representative of the contractor or laboratory, as applicable. Acceptance or approval of material during the course of manufacture shall not be construed as a guarantee of the acceptance of the finished product. Accep- tance tests snall consist of the following: 4.3 Acceptance Test
36、s - The contractor shall furnish all samples 1 Indi vi dual Tests 2 Special Tests 4.3.1 Individual Tests - Each equipment submitted for acceptance shall be subjected to the individual tests. These tests shall be adequate to determine compliance with the requirements of material, workmanship, operati
37、onal adequacy and reliability. As a minimum, each equipment accepted shall have passed the following tests: t 2) Operational Test (3) Manufacturing Run in Test 1) Examination of Product 4.3.1.: Examination of Product - Each equipment shall be examined carefully to cietennine that the material and wo
38、rkmanship requirements have been met, 4.3.1,- Operational Test Each equipment shall be operated long enough to pemit the equipment temperature to stabilize and to check sufficient characteristics and record adequate data to assure satisfactory equipment operati on. Provided by IHSNot for ResaleNo re
39、production or networking permitted without license from IHS-,-,-MIL-F-11757 47 7777706 02567511 O W MIL-F-81959 (AS) / 4.3.1.3 Manufacturing Run In Te;: - Each equipment shall be operated under the conditions specified herein for a period of 6 hours without failure. The equipment shall be attached t
40、o the RL-305A/ASQ-81 (V) Reeling Machine and power applieci to the cable maintenance fixture for a period of 6 hours. The reeling machine c:,all be cycled (OUT to cable limit and IN to speed change point) a minir,m of 9 times with a minimum of 15 minutes OFF between each half cycle. of the cable aai
41、ntenance fixture. which can be made by using such controls and adjustments that are accessible to the operator during the normal use of the equipment. A failure shall be defined as anything which causes malfunctioning Only those adjustments will be permitted Tempera tu re Humidity Vi brati on Ambien
42、t room Ambient room Any selected frequency within the range of 20 to 30 cps (excluding resonant points) and a minimum amplitude of 2 2 gs. The equipment shall be vibrated for a period of 10 minutes prior to the beginning of the 6-hour period of operation. be vertical to the normal mounting plane. Sh
43、ould a failure occur, it should be repaired and the test started over, except that the 10-minute vibration period need not be repeated when it is certain the failure was not a result of the vibration. Should repetitivn failures occur, corrective action shall be taken to eliminate this defec-c f?om f
44、uture equipment. A record shall be kept of all failures. The 6-hours period specified above may be composed of two 3-hour peyiods to conform with standard working hours. quantity of equipments for the purpose of checking the effect of any design or material change on the performance of the equipment
45、 and to assure adequate qual i ty contri:. conducting sprci al tests . tests shall be made as follows: The direction of vibration should 4.3.2 Special Tests - Special tests shall be conducted on a Procuring activity shall make determination of need for 4.3.2.-. Special Test Schedule - Selection of e
46、quipments for special (1) (2) On an early equipment after engineering or materi al change. Whenever failure reports or other information indicate additional tests are required. (This will be determined by the procuring activity). 4.3.2.2 Scope of Tests - Special tests shall consist of such tests Tes
47、t procedures previously approved as approved by the procuring activity. for the PreprGdUCtiOn tists shall be used where applicable. applicable, the cc:,tractor shall prepare a test procedure and submit it to the procuring act: vi ty for approval ?ri or to conducting the tests. When not Provided by I
48、HSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-L959 Y9 9999906 025b95Z 2 MIL-3-81959 (AS) 4.3.3 the i ndi vi dua Equipment Failures - Should a failure occur during either tests or special tests, the following action shall be taken: (1) Determine the cause
49、of the failure. (2) Determine if the failure is an isolated case or design defect, (3) Determi ne appropri ate corrective action necessary to reduce the possibility of the same failure(s) occurring in future tests. (4) Where practical, include a test in the individual test to check all equipment for this requirement unti 1 reasonable assurance is obtained that the defect has been satisfactori ly corrected. 4.4 Test Procedures - The procedures us
