1、_ MI-A-8504.6 (AS) 7 September 1976 MILITARY SPECIFICATION ACTUATOR, LINEAR, ELECTROMECHANICAL This specification is approved for use by the Naval Air Systems Command, Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1 .I Scope.
2、This specification establishes the requirements for the manufacture and inspec- tion of one type of electromechanical linear actuator, .The test limits in this specification define minimum acceptable capabilities. 2. APPLICABLE DOCUMENTS 2.1 Issues of documents. The following documents, of the issue
3、 in effect on date of invitation for bids or request for proposal, form a part of the specification to the extent specified herein. SPECIFICATIONS Military MIL-T-7743 Testing, Store Suspension and Release Equipment, General Specification for MI L-E- 1 75 5 5 Electronic and Electrical Equipment, Acce
4、ssories and Repair Parts, Packaging and Packing of STANDARDS Military MIL-STD-100 Engineering Drawing Practices MIL-STD- MIL-STD- 30 43 Identification Marking of U.S:Military Property Standards and Specifications, Order of Precedence for the Selection of MIL-STD-454 Standard General Requirements for
5、 Electronic Equipment THIS DOCUMENT CO%iT!iiaS -fi PAGES. I FSC-1096 I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-BSOb LO 906 0363L7L 5 = MIL-A-85046(AS) MIL-STD-461 Electromagnetic Interference Characteristics Requirements for Equipment Mi
6、litary Standard, Electromagnetic Interference Characteristics, Measurement of Electric Power, Aircraft, Characteristics and Utilization of MI L-STD-462 MI L-STD-704 MIL-STD-8 10 Environmental Test Methods MIL-STD-831 Test-Reports, Preparation of MIL-STD-1250 Corrosion, Prevention and Deterioration,
7、Control in Electronic Components and Assemblies (Copies of specifications, standards, drawings and publications required by sup- pliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2 Order of precedence
8、 of specifications and standards. Should a conflict exist between any requirement. in this specification and any requirement in the applicable documents referenced herein, the requirements of this specification shall take precedence over the referenced (applicable) document; 3. REQUIREMENTS 3.1 Firs
9、t article. The actuator furnished under this specification shall be a product which has been inspected and passed the first article inspection specified herein (see 4.3). 3.2 Selection of specifications and standards. Specifications and standards for necessary commodities and services not specified
10、herein shall be selected in accordance with MIL-STD- 143. 3.3 Design and construction. The design and construction of the actuator shall be in accordance with the requirements specified herein. The actuator shall be capable of meeting all the requirements of this specification ,after undergoing a ro
11、om temperature shelf life of 48 months. There shall be no repair of the actuator permitted to meet this requirement. 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 compatibility with other mate
12、rials in the item so as to minimize galvanic action (sqe MIL-STD-1250). Mounting interfaces shall be constructed of materi- ais that are compatible with the cadmium plated steel pin pivots and stainless steel nuts on the actuating ram. 3.3.2 Finishes, Finishes shall be applied to all materials, when
13、ever 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 not exceed 250 microinches (6.35 x 10 centime- ters) and there shall be no sharp edges or burrs. 2 Provided by IHSNot for Resa
14、leNo reproduction or networking permitted without license from IHS-,-,-NIL-A-850LIb LO 7947906 0363172 7 8 MIL-A-85046 (AS 3.3;4 Interchangeability. All actuators having the same part number shall be internally and externally identical. 3.3.6 Identification of parts. All parts shall be marked as spe
15、cified on the applicable drawing or in accordance with MIL-STD-130 if not specified on the drawing. The item identification and part number requirements of MIL-STD-100 shall govern the part numbers and changes thereto. 3.3.6 Nameplates. Identification and wiring schematic plates for actuators shall
16、be in accord- ance with the applicable drawing for the actuator being procured. 3.3.7 Envelope. - 3.3.7.1 Dimensions. The actuator envelope dimensions shall be in accordance with the appIica- ble drawing for the actuator being procured. 3.3.7.2 Electrical interface. The actuator cable interface shal
17、l be in accordance with color coding of the applicable drawing for the actuator being procured. 3.3.8 Weight. The maximum weight of the actuator shall be 1 pound (0.4536 kilograms). 3.3.9 Lubrication. If lubricants are used they shall not be of a toxic nature or of such a nature to cause injury to p
18、ersonnel. 3.3.10 Manual operation. The actuator shall incorporate provisions for a manual operation. The ratio of turns of the manual input shaft to the actuating ram stroke shall be a maximum of 20 turns of manual input shaft rotation for linear movement of output shaft from fully extended to fully
19、 retracted position. The torque required to manually operate the actuators shall be a maximum of 10 inch pounds (1.13 Nem). 3.3.1 1 Input power requirements. The rated voltage of the actuator shall be 28 VDC. The actuator shall operate from a 28 VDC power source with the characteristics and limits d
20、efined in MIL-STD-704, except that the actuator shall operate over a range of 18 to 30 volts with a normal operating load applied. 3.3.1 2 Electromagnetic interference control. The electrical portion of the system shall be designed for electromagnetic interference free operation in accordance with 4
21、.6.5. 3.3.1 3 Operating stroke. The operating stroke shall be as specified in the applicable drawing for the actuator being procured, 3,3.14 Manual torque. The torque required to manually operate the actuator (no external load applied) when the actuating ram is positioned approximately mid-stroke, s
22、hall be: a, 10 inch pounds (1.13 Nem) maximum (breakaway) b. 3.3.1 6 6 inch pounds (0.677 Nem) maximum (run) Operating loads. The normal operating load shall be 90 r/ Inspect all actuators to the requirements of the test paragraph. - 8 Provided by IHSNot for ResaleNo reproduction or networking permi
23、tted without license from IHS-,-,-.- MIL-A-5046 LO PI 7777706 8363178 8 m MIGA-8 5046 (AS ) TABLE 111 SAMPLING TEST ITEMS PRODUCTION LOT SIZE NUMBER OF SAMPLES 500 or Less 3 501 to 1000 6 i/ 1001 or More - 2/ - I/ Actuators shall be inspected as two groups of three units each, in accordance with Tab
24、le II. a/ Number of samples shall be in multiples of 3. The procuring activity shall specifiy the number of samples and the sequence of inspections each unit shall be subjected to for lots in excess of 1000 units (see 6.2.lg). - c. 4.6.4 Functional test. The actuator shall be subjected to the follow
25、ing operational checks. 4.6.4.1 Direction of operation. Operate the actuator in the retract direction with 18 VDC applied. The output shaft shall move .in the retract direction. Subsequently, operate the actuator in the extend direction with 18 VDC applied, The output shaft shall move in the extend
26、direction. NOTE The actuating ram shall move in the extend direc- tion with 18 VDC applied if the positive (+) po- tential is applied to pin A (Black) and the negative (-) potential is applied to pin C. During any opera- tional check, a negative (-) potential must be ap- plied to pin B to allow dyna
27、mic braking at the electrical limits. 4.6.4.2 Electrical stroke and position indication. The actuator shall be subjected to the follow- ing checks: a. The actuator shall be operated in a no-load condition to ascertain compliance with the mechanical and electrical extend and retract Iimits on the app
28、licable drawings. b. The actuator shall be operated to ensure that both extend and retract indicator devices are actuated prior to, but within O. 120 inch (0.305 centimeters) maximum travel of their respective limit devices. 4.6.4.3 Mechanical stop. The actuating ram shall be operated with 30 VDC in
29、to the retract mechanical stop biy bypassing the electrical limit device, The actuator shall then be oprated with 18 VDC in the extend direction. The actuator shall pull off the retract mechanical stop. The actuating ram shall be operated with 30 VDC into the extend mechanical stop by bypassing the
30、electrical limit device. The actuator shall then be operated with 18 VDC in the retract direction. The actuator shall pull off the extend mechanical stop. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-5096 LO 777770b 0363177 T E MIL-A-8504.
31、6 (AS) 4.6.4.4 Normal load. The actuator shall be operated for a full stroke with 28 VDC in the retract direction against a load of 90 f 10 pounds (40.82 f 4.54 kilograms). The time to complete the stroke shall be based on a rate of 1 inch (2.54 centimetets) per 2.2 to 4.5 seconds. The running curre
32、nt during operation shall not exceed 1.0 ampere. Starting and stall current shall not exceed 2.1 amperes at 28 VDC and room temperature. The. actuator shall be operated for a full stroke with 28 VDC in the extend direction against a load of 90 f 10 pounds (40.82 f 4.54 kilograms). The time to comple
33、te the stroke shall be based on a rate of 1 inch (2.54 centimeters) per 2.2 to 4.5 seconds, The running current during operation shall not exceed 1.0 ampere. 4.6.4.5 Manual shaft torque. With -no load applied, the actuating ram shall be positioned at approximately mid-stroke. The breakaway and runni
34、ng torques shall then be measured. The torque shall meet the requirements of 3.3.14 without any slipping or binding. 4.6.5 Electromagnetic compatibility. The actuator shall be tested in accordance with MIL-STD-461, Class 1D using the methods described in MIL-STD-462. The following tests are applica-
35、 ble: CEO1, CE02, CE03, CE04, RE02, (2,501, CS02, CS06, RSOI, RS02, and RS03. The following shall apply: a. Conducted and radiated emission levels emitted by the actuator shall not exceed those values depicted in Figures 1 through 3. b. The power line configuration during conducted emission testing
36、shall include a 7 microhenry choke in series with each power lead. C. The actuator shall be loaded with a 0.030 ampere suppressed inductive load across pins E and D in series.with a 28 VDC power source. Pins G and F shall be loaded by a 0.010 ampere resistive load in series with a 28 VDC power sourc
37、e. NOTE In cases where an electrical connector. is not re- quired by the applicable drawing, the suppressed inductive load shall be across the blue and green lines and the yellow and brown lines shall be loaded by the resistive load. d. The actuator shall not be mechanically loaded during this test.
38、 e. In addition to the requirements specified in MIL-STD-461, the actuator shall meet the following requirements: 1. The actuator shall not emit radiated magnetic fields exceeding those values depicted in Figure 4 of this document, when tested in accordance with test method REO1 of MIL-STD-462. 2. T
39、he actuator shall operate without degradation when subjected to a near-linear-steady- state magnetic field of 1 oersted. 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-5046 LO 7777706 0363380 6 MIL-A=85046(AS) p- 3. Static magnetic fields.
40、The actuator shall not generate a static magnetic field intensity (H), due to DC, exceeding 1.2 x lo- oersteds, at a point 12.0 inches (30.48 centime- ters) from the center of the actuator magnetic sources. A static magnetic field is defined as a field which does not change in magnitude or direction
41、. 4. Dynamic magnetic fields. The actuator shalI not generate a dynamic magnetic field intensity (H) over the frequency range from DC to 30 Hz exceeding 7.2 x 10 -3 oersteds. A dynamic fleld is defined as a field which can change. The measurement distance shall be 12.0 inches (30,48 centimeters) fro
42、m the center of the actuator magnetic sources. 4.6.6 Maximum operating load. The actuator shall be operated utilizing the input power and maximum operating loads (see 3.3.1 and 3.3.15) respectively. The actuator shall operate satisfactorily under these conditions. 4.6.7 Overriding loads. The actuato
43、r shall be operated utilizing the input power and overrid- ing load conditions (see 3.3.11 and 3.3.18 respectively). The load shall be applied in the same direction as the actuating ram direction and shall not cause sufficient over-speeding of the actuator during operation to cause failure or damage
44、 to the actuator. Overriding loads shall not increase the stopping distance beyond that allowed in 3.3.18. 4.6.8 Environmental tests. The actuators shall be subjected to the following environmental tests. Where required, the actuator shall be subjected to an operational check as follows: The actuato
45、r shall be operated for seven cycles in the following sequence. A normal full stroke cycle shall consist of starting at a point on the stroke and going to the electrical limits on both ends of the stroke before returning to that point. Each cycle shall be conducted using rated voltage (see 3.3.11) e
46、xcept as noted in e. below and normal operating loads (see 3.3.15) except as noted in b. below. Data shall be obtained to verify compliance to 3.3.24 except as noted in e. below, a. Two normal full stroke cycles shall be performed. b. One cycle shall be an instantaneous reversal of the actuating ram
47、 direction (no external applied load) when at the midpoint of the stroke. C. One cycle shall be performed with the limit devices by-passed, The actuating ram shall be driven into the mechanical stops corresponding to each direction of the ram. The limit devices shall be by-passed by opening the comm
48、on ground wire. The actuator will be electrically isolated from grounding through the case. The stall current shall not exceed 2.1 amperes at 28 VDC at room temperature. d. One normal full stroke cycle shall be performed. e. Two cycles shall be performed utilizing the full electrical stroke of the a
49、ctuator and the input power shall be 18 VDC for one cycle and 30 VDC for the remaining cycle. 4.6.8.1 Altitude and low temperature. The actuator shall be subjected to a low temperature altitude test. The tempe ature shall be -54C (-65F) and the altitude shall be 50,000 feet (15,240 meters). The actuator shall be maintained under these conditions for I hour. The operational checks of 4.6.8 shall be performed while he altitde and temperature
