1、1 May 1987 SUPERSEDING MIL-A-85072(AS) 3 March 1977 MILITARY SPECIFICATION ACTUATOR, ELECTROMECHANICAL, LINEAR This specification is approved for use wi-thin the Naval Air Systems Command, Department of the Navy, and i S avai lable for use by al 1 Departments and Agencies of the Department of Defens
2、e. l. SCOPE 1.1 Scope. This specification establishes the requirements for the manufacture and inspection of one type of electromechanical linear actuator. The test limits in this specification define minimum acceptable capabilities. 2. APPLICABLE DOCUMENTS 2.1 Government documents, 2.1.1 Specificat
3、ions and standards. The following specifications and standards form a part of this specification to the exent specified herein, Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and
4、 supplement thereto, cited in the sol ici tation. SPECIFICATIONS MILITARY MIL-T-7743 Testing, Store Suspension and Release Equipment, General Specification for MIL-E-17555 Electronic and Electrical Equipment, Accessories and Repair Parts, Packaging and Packing of Beneficial comments, (recommendation
5、s, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to the Naval Air Engineering Center, Systems Engineering and Standardization Department (Code 931, Lakehurst, N3 08733-5100, by using the self-addressed Standardization Document Improve
6、ment Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC NIA FSC 1095 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. / “. THIS DOCUMENT CONTAINS al PAGES. _. . ?. - Licensed by Information Handling ServicesProvided by IHSNot for ResaleN
7、o reproduction or networking permitted without license from IHS-,-,-MIL-A-85072A 10 9 777770b 0363617 B 9 “- MIL-A-85072A(AS) STANDARDS MILITARY DOD-STD-100 MI L-STD-130 MIL-STD-143 MIL-STD-454 MIL-STD-704 MIL-STD-810 MI L-STD-831 MIL-STD-1250 Engi neeri ng Drawi ng Practi ces Identification Marking
8、 of U.S. Mi 1 i tary Property Standards ad Specifications, Order of Precedence for the Selection of Standard General Requirements for Electronic Equipment Electric Power, Aircraft, Characteristics and Utilization of Environmental Test Methods and Engineering Guide1 ines Test Reports, Preparation of
9、Corrosion, Prevention and Deterioration, Control in Electronic Components and Assembl ies (Copies of specification, standards, and drawings required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting act
10、ivity. 2.2 Other publications. The following document(s) form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted shall be those 1 i sted in the issue of the DODISS specified in the solicitation. Unless otherwise
11、specified, the issues of the documents not listed in the DODISS shall be the issue of the nongovernment documents which is current on the date of the sol i ci tation. AMERICAN NATIONAL STANDARDS. INSTITUTE (ANSI) ANSI 846.1 Surface Texture (Surface Roughness Waviness and Lay) (Applications for copie
12、s should be addressed to the American National Standards Institute, 1430 Broadway, New York, New York 10018). (Nongovernment standards and other pub1 i cations are normal ly avai lab1 e from the organizations which prepare or which distri bute the documents. These documents also may be available in
13、or through libraries or other informational services.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2.3 Order of precedence. In the event of a conflict between the text of this specification and the references cited herein (except for associated d
14、etail specifications, specification sheets or MS standards), the text of this specification shall take precedence. Nothing in this specification, however, shall supersede applicable laws andregulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified i
15、n the contract or purchase order, a sample shall be subjected to first article inspection (see 4.3.1, 6.2.1, and 6.3) 3.2 Selection of specifications and standards. Specifications and standards for necessary commodities and services not specified herein shall be seiected in accordance with MIL-STD-1
16、43. 3.3 Design and construction. The design and construction of the actuator shall be in accordance with the requirements specified herein. 3.3.1 Materials. The materials shall be entirely suitable for the purpose intended. Materials shall be selected on the basis of strength, workability and compat
17、ibility with other materials in the item to minimize galvanic action (see MIL-STD-1250). Mounting interfaces shall be constructed of materials that are compatible with the cadmium plated steel bolts and cadmium plated steel frame. 3.3.2 Finishes. Finishes shall be applied to all materials, whenever
18、applicable, and shall be entirely suitable for the purpose intended, such as corrosion resistance and increased durability. 3.3.3 Surface texture. Surface texture shall be not greater than 250 microinches measured in accordance with ANSI B46.1. There shall be no sharp edges or burrs. 3.3.4 Interchan
19、geability. All actuators having the same vendor part number shall be internally and externally identical. 3.3.5 Marking. All parts shall be marked as specified on the applicable drawing or in accordance with MIL-STD-130 if not specified on the drawing. The item identification and part number require
20、ments of DOD-STD-100 shall govern the part numbers and changes thereto. 3.3.6 Nameplates. Identification for actuators shall be in accordance with the applicable drawing for the actuator being procured. 3.3.7 Enuplope. 3.3.7.1 Dimensions. The actuator envefoped1mension shall be in accordance with th
21、e dpklicable drawing for the actuator Being procured 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-85072A LO m 799370b 03636.117 L m- MIL-A-85072A(AS) 3.3.7.2 Electrical interface. The actuator cable interface shall be in accordance with th
22、e appl.icable drawing for the actuator being procured. 3.3.8 Weight. The weight of the actuator shall be not greater than 2 pounds. 3.3.9 Lubrication. Lubricants shall not be toxic or cause injury to personnel. 3.3.10 Power requirements. 3.3.10.1 Input power. The actuator shall operate from a 28 vol
23、t direct current (VDC) power source with the characteristics and limits defined in MIL-STD-704, except that the actuator shall operate over a range of 20 to 32 VDC. The rated voltage of the actuator shall be 28 VDC. The actuator shall operate when vol tage i S applied for a minimum of 20 mi 11 i sec
24、onds and a maximum of 15 seconds. The total maximum “on“ time shall be 15 seconds at a 20% duty cycle. 3.3.10.-2 Current. The current drawn by the actuator shall be not greater than 5.0 amperes at 28 VDC at room temperature. The actuator shall be capable of a steady current draw not greater than 0.2
25、5 ampere, without any movement of the release plunger or mechanism or damage to the unit (see 4.6.2.51. 3-.3.11 Electromagnetic interference controls. The electrical portton of the system shall be designed for electromagnetic interference (EM11 free operation - . in accordance with 4.6.3 and as spec
26、ified in the appendix. 3.3.12 Plunger force. The actuator plunger thrust force shall be not less than 45 pounds after 1/16 inch travel or not less than 18 pounds during the full length of travel when tested in accordance with 4.6.2.2, 3.3.13 Operating stroke. The operating stroke shall be as specifi
27、ed in the applicable drawing for the actuator being procured. 3.3.14 Time of release. The travel time of the actuator plunger, from initiation of release voltage at the actuator connector interface to full extension of the actuator plunger, shall be not greater than 30 mil 1 iseconds when tested in
28、accordance with 4.6.2.3. 3.3.15 Speed of transfer switch. The total- transfer time of the actuator swl tch, when .power i S removed, shall be not greater than 20 mi 11 i seconds including decay time, breaking of contacts, and chatter (see 4.6.2.4). 3.3.16 Service life. The actuator shall operate thr
29、ough 5,000 cycles without faflure or readjustment of any parts (see 4.6.12). 3.3.17 Leakage. The actuator shall not show evidence of leakage above 0.7 standard 1 i ters per minute (SLPM) when tested in accordance with 4.6.2.6. 3.3.18 Operating environment. The actuator performance shall comply with
30、the requirements of the applicable conditions specified -in MIL-STD-810 and MIL-T-7743 and other conditions specified herein. 4 .,- . . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-a . c a .- S MIL-A-85072A 10 7997706 0363620 8 m 3.3.19 Workmanshi
31、p. The workmanship displayed in fabrication and assembly of the actuator shall ensure, within design limitations, ability of the actuator to meet performance requirements under all applicable environmental conditions specified herein. Unauthorized repair, welding, heavy burrs, or parts assembled by
32、introduction of high stresses not prescribed in design are typical signs of inferior workmanship and shall be cause for rejection. The standards of workmanship exhibited in the approved first article sample, subject to any qualification stated in the Governments notice of approval, shall be determin
33、ative of the requirements of the contract relative to workmanship. All electrical components and wiring shall be installed in accordance wi th MI L-STD-454. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor
34、 is responsible for the performance of all .inspection requirements as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities sui table for the performance of the inspection requirements specified herein, unless di sa
35、pproved by 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 assure supplies and services conform to prescribed requirements. 4.1.1 Responsi bi 1 i ty for compliance. All i tems must meet
36、al 1 requirements of sections 3 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of assurin
37、g that all products or supplies submitted to the Government for acceptance comply with al 1 requirements of the contract. Sampling in qual i ty conformance does not authorize submission of known defective material, either indicated or actual, nor does it comm t the Government to acceptance of defect
38、ive material. 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.3). b. Quality conformance inspection (see 4.4). 4.3 First article inspection. First article inspection shall consist of all the inspections lis
39、ted in Table I. First article inspection report format shall be in accordance with MIL-STD-831 (see 6.2.2). 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-85072A(AS) TABLE I. First article inspection - schedule and sequence. 1/ Inspection Ac
40、tuator inspection Plunger force Current Temperature ri se Time of release Speed of transfer switch Operation of indicator circuit Dielectric breakdown Electromagnetic compati bi 1 i ty Operational check Leakage Vibration, low frequency High temperature Insulation resistance Low temperature Accelerat
41、ion Vi bration, resonance search Vi bration, resonance dwell Salt fog S hock Servi ce 1 i fe Post test Met hod paragraph 4.6.1 4.6.2.2 4.6.2.5 4.6.6 4.6.2.3 4.6.2.4 4.6.2.4.3 4.6.7 4.6.3 4.6.2.1 4.6.2.6 4.6.11.2 4.6.5 4.6.8 4.6.4 4.6.9 4.6.11.3 4.6.11.4 4.6.10 4.6.13 4.6.12 4.6.14 Sample (see 4.3.1)
42、 ABCDE 1 1 1 1 2222 3333 4444 5555 6666 7777 8888 9999 10 10 10 10 11 11 11 11 12 12 12 12 13. 13 13 13 14 14 14 14 15 15 15 15 X X16 X X16 X X X17 X X 16 X X -16 X X 17 17 17 X 18 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 X X X 18 18 19 19 19 - 1/ Inspection sequence is denoted by the number
43、in the same columns. An X denotes inspection is not required. 4.3.1 Sample. First article actuator sample shall consist of the first five actuators manufactured on contract. The actuators shall.be permanently labeled A, B, C, D and E for ease of identification. Failure of the actuators to pass any o
44、f the first article inspections shall be cause for rejectlon (see 6.2.lh). 4.4 Quality conformance inspection. Quality conformance inspection shall consist of the following inspections: a. Individual inspections (see 4.4.1). b Sampling inspections (see 4.4.2). Qual i ty conformance Inspection report
45、 format shall be ln accordance with MIL-STD-831 (see 6.2.2). 4.4.1 Individual inspections. Indivldual inspections are those inspections conducted on each actuator in accordance with the inspection6 11stod in fable II Group l. Fallure to pass any of these inspections shall Se cruse for rejection of t
46、he actuator. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-65072A LO W 777770b 0363b22 L W MI L-A-85072A(AS) TABLE II. Quality conformance inspection - schedule and sequence. 1/ - Met hod Inspection paragraph Samp 1 es All actuators (see 4.
47、4.1) All samples (see 4.4.2) 2/ Group 1 Actuator inspection 4.6.1 1 Plunger force 4.6.2.2 2 Current 4.6.2.5 3 Time of release 4.6.2.3 4 Speed of transfer switch 4.6.2.4 5 Operation of indicator circuit 4.6.2.4.3 6 Dielectric breakdown. 4.6.7 7 Operational check 2/ 4.6.2.1 8 Leakage 21 4.6.2.6 9 Vibr
48、ation, low frequency 21 4.6.11.2 10 All samples (see 4.4.2) Group 2 ABCDE Electromagnetic compati bi 1 i ty Temperature rise High temperature Insulation resistance Low temperature Acceleration Vibration, resonance search Vibration, resonance dwell Salt fog S hock Servi ce 1 i fe Operation of indicat
49、or circuit Post test 4.6.3 4.6.6 4.6.5 4.6.8 4.6.4 4.6.9 4.6.11.3 4.6.11.4 4.6.10 4.6.13 4.6.12 4.6.2.4.3 4.6.14 Il 1 1 1 1 2-222 44444 55555 6X6XX X6XX6 x7xx7 7XX6X X8X7X 8X68X 99798 10 10 9 10 9 G3333 - 1 / Inspection sequence i S denoted by the numbers in the sample column. An X denotes inspection is not required. - 2/ The operationaT, leakage, and low frequency vibration tests shall not be included in the sampling inspections (see 4.4
