1、AMSC N/A FSC 1650 MIL-PRF-5503G 24 May 2013 SUPERSEDING MIL-PRF-5503F 26 June 1998 PERFORMANCE SPECIFICATION ACTUATORS: AERONAUTICAL LINEAR UTILITY, HYDRAULIC, GENERAL SPECIFICATION FOR This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1
2、Scope. This specification establishes the general requirements for hydraulic linear actuators used in any aircraft hydraulic system except for those associated with flight controls. 1.2 Classification. Actuators are of the following types (see 6.2): Type I - -65 to 160F temperature range. Type II -
3、-65 to 275F temperature range. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4 or 5 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as ex
4、amples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed. INCH-POUND Comments, suggestions, or question
5、s on this document should be addressed to Oklahoma City Air Logistics Center/ENSDAA, 3001 Staff Drive, Tinker AFB, OK 73145 or emailed to tinker.dsptinker.af.mil. Since contact information can change, you may want to verify the currency or this address information using the ASSIST Online database at
6、 https:/assist.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-5503G 2 2.2 Government documents. 2.2.1 Specifications and standards. The following specifications and standards form a part of this document to the extent specified here
7、in. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-PRF-5606 - Hydraulic Fluid, Petroleum Base; Aircraft, Missile, and Ordnance MIL-PRF-87257 - Hydraulic Fluid, Fire Resistant; Low Temperature, Synthe
8、tic Hydrocarbon Base, Aircraft and Missile MIL-PRF-83282 - Hydraulic Fluid, Fire Resistant, Synthetic Hydrocarbon Base, Metric, NATO Code Number H-537 DEPARTMENT OF DEFENSE STANDARDS MS28932 - Felt Strip, Packing Gland MS33675 - Scraper, Installation, Packing, Gland Ring (Copies of these documents a
9、re available online at https:/assist.dla.mil/quicksearch or from the Standardization Document Order Desk, Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise
10、specified, the issues of these documents are those cited in the solicitation or contract. AMERICAN SOCIETY FOR QUALITY (ASQ) ANSI/ASQ Z1.4 - Sampling Procedures and Tables for Inspection by Attributes (ASQ documents may be obtained online at http:/.asq.org or addressed to the American Society for Qu
11、ality, P.O. Box 3005, Milwaukee, WI 53201-3005, or 600 North Plankinton Avenue, Milwaukee, WI 53203.) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM B117 - Salt Spray (Fog) Apparatus, Operating (ASTM documents may be obtained online at www.astm.org or addressed to the American Society for Te
12、sting and Material, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-5503G 3 RADIO TECHNICAL COMMISSION FOR AERONAUTICS (RTCA) RTCA/DO-160 - Environmental Conditions and Test Procedures
13、 for Airborne Equipment (RTCA documents may be obtained online at www.rtca.org or addressed to RTCA Inc., 1828 L Street, NW, Suite 805, Washington, DC 20036.) SOCIETY OF AUTOMOTIVE ENGINEERS (SAE) SAE AS4716 - Gland Design, O-Ring and Other Elastomeric Seals SAE-AS5169 - Fitting, Port Plug and Bleed
14、er SAE-AS5202 - Port or Fitting End, Internal Straight Thread SAE-AS5440 - Hydraulic Systems, Aircraft, Design And Installation Requirements For SAE-AS8775 - Hydraulic System Components, Aircraft And Missiles, General Specification For SAE-AS15002 - Fittings, Lubrication, Hydraulic, Leakproof, 1/8 P
15、ipe Threads, Steel, Type VI SAE-AS15006 - Fittings, Lubrication, Hydraulic, Leakproof, 1/8 Pipe Threads, Steel, Type VI SAE-AMSP83461 - Packing, Preformed, Petroleum Hydraulic Fluid Resistant, Improved Performance at 275F (135C) (SAE documents may be obtained online at http:/www.sae.org or addressed
16、 to the Society of Automotive Engineers, Inc., 400 Commonwealth Drive, Warrendale, PA 15096-0001.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein (except for related specification
17、 sheets), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Associated specifications. The individual item requirements shall be as specified herein and in accor
18、dance with the associated specification cited in the acquisition document (see 6.2). In the event of any conflict between the requirements of this specification and the acquisition document, the latter shall govern. 3.2 First article. When specified (see 6.2), a sample shall be subject to first arti
19、cle inspection in accordance with 4.2. 3.3 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-5503G 4 environmentally preferable materials should be used to th
20、e maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle cost. 3.4 Materials. All materials shall be suitably treated to resist corrosion due to electrolytic decomposition, salt fog, hydrauli
21、c fluid, and any other atmospheric condition that may be encountered during operational use or storage. The use of toxic chemicals, hazardous substances, or ozone depleting chemicals shall be avoided, whenever feasible. 3.5 Construction. (see 6.3.1) 3.5.1 Hydraulic properties. The actuator shall con
22、form to SAE AS8775 (see 6.3.2). 3.5.2 Fillets. All internal fillets shall have radii at least 0.010 inch or 10% of the minimum wall thickness, whichever is greater. 3.5.3 Wrench flats. If threaded end caps are used, the actuator barrel shall have standard size wrench flats or hexes. Wrench flats or
23、hexes shall be placed as near to the end cap as possible. 3.5.4 Seals. Actuator seals shall be in accordance with SAE AMSP83461 and seal glands and O-ring glands shall conform to SAE AS4716. 3.5.5 Bearings. Replaceable bearings or bushings shall be used at all junction points where motion exists. Un
24、less the bearings are self-lubricating or permanently lubricated, lubrication fittings conforming to SAE AS15002 or SAE AS15006 shall be provided. 3.5.6 Scraper and wiper rings. Landing gear strut actuators and utility actuators whose piston rods are exposed to ice, dirt, or other foreign matter sha
25、ll use scraper rings (see 6.3.8) installed in a groove per MS33675. Actuator rods extended for long periods of time or subjected to high acceleration forces shall be lubricated with felt wipers in accordance with MS28932. The use of felt wipers for temperatures exceeding 200F shall be as specified i
26、n the associated specification. Actuators exposed to extreme sand and dust conditions as defined in the associated specification shall be provided with scraper or wiper rings. 3.6 Interface. 3.6.1 Bosses. All bosses for fluid connection fittings shall conform to SAE AS5202. Tube fittings and tubing,
27、 if incorporated in the actuator, shall conform to SAE AS5440. 3.6.2 Hydraulic fluid temperature. The actuator shall function with hydraulic fluid temperatures from -65 to 160F for type I or -65 to 275F for type II. 3.6.3 End caps, lock nuts, and adjustment nuts. End caps, lock nuts, and adjustment
28、nuts shall have wrench flats or hexes, be knurled, or contain milled slots for spanner wrenches. If spanner wrench slots are used, they shall be dimensioned in accordance with figure 1. Drilled hole type nuts requiring the use of pin type spanner wrenches shall not be used. End caps, lock nuts, and
29、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-5503G 5 adjustment nuts, if used, shall not rotate or come loose during operation (see 6.3.3). 3.7 Performance. 3.7.1 Rod bearing length. The rod bearing length shall be at least the diameter of
30、 the piston rod. When determining rod or piston head bearing length, the seal glands shall not be considered as a bearing surface. 3.7.2 Piston head bearing area. The piston head bearing area on the barrel wall shall withstand the compression, bending (see 6.3.4), and vibration loads imposed on the
31、actuator during operation as specified in the associated specification. 3.7.3 Ports. All fluid port intersections with internal surfaces of cylinder barrels and end caps shall be perpendicular within 25 unless otherwise specified in the associated specification. 3.7.4 Proof pressure. The actuator sh
32、all withstand a pressure equal to 1.5 times the actual differential pressure to be encountered, the proof pressure specified in SAE AS5440 or the associated specification, whichever is greater, without evidence of leakage from the open port, unless otherwise specified in the associated specification
33、. 3.7.5 Endurance. 3.7.5.1 Normal service actuators (see 6.2). Normal service actuators shall withstand 20,000 operation cycles at 100% of rated pressure. 3.7.5.2 Emergency service actuators (see 6.2). Emergency service actuators shall withstand 2,000 operation cycles at 100% of rated pressure. 3.7.
34、5.3 Pressure impulse cycles. The actuator shall with stand 50,000 cycles of rated impulse pressure conforming to figure 2. 3.7.6 Burst pressure. The actuator shall withstand the burst pressure specified in SAE AS8775. 3.7.7 Rod bearing overlap. The rod bearing overlap (see 6.3.5) of the actuator sha
35、ll be determined considering all combinations of the actuator weight, acceleration, vibration, and compression loads defined in the associated specification. 3.7.8 Leakage. Leakage shall not exceed the rate of one drop (see 6.4) per packing per 25 cycles of operation at points where motion through e
36、xternal packing exists. There shall be no other external leakage. 3.7.9 Bleeder plugs. When required to conform to SAE AS5440 bleeder plugs shall be provided. 3.8 Item identification. The actuator shall be permanently and legibly marked with the items specified in the associated specification and th
37、e following information: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-5503G 6 a. Manufacturers name. b. Manufacturers CAGE code. c. Manufacturers part number. d. Manufacturers lot number. e. National Stock Number (NSN). f. Date of manufact
38、ure. g. Serial number. 3.9 Interchangeability. All parts having the same manufacturers part number shall be functionally and dimensionally interchangeable. 3.10 Environmental conditions. 3.10.1 Temperature. The actuator shall operate under the following conditions: a. A low temperature of -65F. b. A
39、 high temperature of 160F for type I actuators or 275F for type II actuators. 3.10.2 Vibration. The actuator shall withstand exposure to the vibration conditions specified in the associated specification. 3.10.3 Sand and dust. The performance of the actuator shall be unaffected by sand and dust. 4.
40、VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.2). b. Conformance inspection (see 4.3). 4.2 First article inspection. First article inspections shall be performed on two samples in accordance
41、with 4.2.1, 4.2.2, and SAE AS8775. 4.2.1 First article test sample 1. The actuator shall be subjected to the following tests in the order listed: a. Examination (see 4.6.1). b. Temperature (see 4.6.11). c. Sand and dust (see 4.6.12). d. Salt fog (see 4.6.2). e. Vibration (see 4.6.5). f. Leakage (see
42、 4.6.6). 4.2.2 First article test sample 2. The actuator shall be subjected to the following tests in the order listed: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-5503G 7 a. Examination (see 4.6.1). b. Immersion (see 4.6.3). c. Hydraulic
43、 properties (see 4.6.4). d. Proof pressure (see 4.6.7). e. Endurance (see 4.6.9). f. Burst pressure (see 4.6.10). 4.3 Conformance inspection. Conformance inspection shall consist of the following: a. Individual tests (see 4.3.1). b. Sampling tests (see 4.3.2). 4.3.1 Individual tests. Each actuator s
44、hall be subjected to the following tests: a. Examination (see 4.6.1). b. Leakage (see 4.6.6). c. Proof pressure (see 4.6.8). 4.3.2 Sampling tests. Actuators shall be sampled according to ANSI/ASQ Z1.4 at the inspection level (normal, tightened, or reduced) specified in the acquisition document (see
45、6.2). 4.4 Test conditions. 4.4.1 Test fluid. Unless otherwise specified by the associated specification, all first article tests shall be performed with hydraulic fluid conforming to MIL-PRF-83282. Conformance tests shall be conducted with hydraulic fluid conforming to MIL-PRF-87257, MIL-PRF-5606 or
46、 MIL-PRF-83282. 4.4.2 Temperatures. Unless otherwise specified in the associated specification, the tests shall be conducted at ambient temperatures between 50 and 110F with hydraulic fluid temperatures from 70 to 130F. 4.5 Requirements cross-reference matrix. Table I provides a cross reference matr
47、ix of the section 3 requirements tested or verified in the paragraphs below. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-5503G 8 TABLE I. Requirements cross-reference matrix. Requirement Verification Requirement Verification 3.2 4.2 3.7.4
48、 4.6.7, 4.6.8 3.4 4.6.1, 4.6.2, 4.6.3 3.7.5.1 4.6.9.1 3.5.1 4.6.4 3.7.5.2 4.6.9.1 3.5.2 4.6.1 3.7.5.3 4.6.9.2 3.5.3 4.6.1 3.7.6 4.6.10 3.5.4 4.6.1 3.7.7 4.6.1 3.5.5 4.6.1 3.7.8 4.6.6 3.5.6 4.6.1 3.7.9 4.6.1 TABLE I. Requirements cross-reference matrix (Continued). 3.6.1 4.6.1 3.8 4.6.1 3.6.2 4.6.3 3
49、.9 4.6.1 3.6.3 4.6.1, 4.6.5 3.10.1 4.6.11 3.7.1 4.6.1 3.10.2 4.6.5 3.7.2 4.6.5, 4.6.6 3.10.3 4.6.12 3.7.3 4.6.1 4.6 Tests. 4.6.1 Examination. The actuator shall be examined for compliance with the requirements for materials, fillets, wrench flats, seals, bearings, scraper and wiper rings, bosses, end caps, locknuts, adjustment nuts, rod b
