1、AMSC N/A FSC 6620 MIL-PRF-5350G 4 May 2009 SUPERSEDING MIL-PRF-5350F 28 February 1998 PERFORMANCE SPECIFICATION TRANSMITTER, SYNCHRO OPERATED, AIRCRAFT, GENERAL SPECIFICATION FOR This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope.
2、This general specification covers aircraft synchro transmitters (see 6.3.2). 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are cited in sections 3, 4, or 5 of this specification. This section does not include documents cited in other sections of this specification or reco
3、mmended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed. 2.2 G
4、overnment documents. 2.2.1 Specifications and standards. The following specifications and standards form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. INCH-POUND Comments, suggestions
5、, or questions on this document should be addressed to: Oklahoma City Air Logistics Center/ENSDAA, 3001 Staff Drive, Tinker AFB, OK. 73145-3036 or emailed to af71tinker.af.mil. Since contact information can change, you may want to verify the currency of this address information using ASSIST Online d
6、atabase at http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-5350G 2 DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-I-7057 - Indicators, Synchro, Aircraft, General Specification for DEPARTMENT OF DEFENSE STANDARDS MIL-STD-4
7、61 - Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment MIL-STD-1651 - Insert Arrangements for MIL-C-5015, MIL-C-22992 (Classes C, J, and R), and MIL-C-83723 (Series II) Electrical Connectors MS3102 - Connector, Receptacle, Electric, Box Mounting
8、, Solder Contacts, AN Type (Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.3. Non-Government publications. The following documents form a part o
9、f this document to the extent specified herein. Unless otherwise 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 at
10、http:/asq.org or addressed to the American Society for Quality P.O. Box 3005 Milwaukee, WI 53201-3005 or 600 North Plankinton Avenue, Milwaukee, Wisconsin, 53203, USA) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM B117 - Salt Spray (Fog) Apparatus, Operating (ASTM documents may be obtained
11、at www.astm.org or addressed to the American Society for Testing and Material, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) RADIO TECHNICAL COMMISSION FOR AERONAUTICS (RTCA) RTCA/DO-160 - Environmental Conditions and Test Procedures for Airborne Equipment Provided by IHSNot for ResaleNo
12、 reproduction or networking permitted without license from IHS-,-,-MIL-PRF-5350G 3 (RTCA documents may be obtained at www.rtca.org or addressed to RTCA Inc., 1828 L Street, NW, Suite 805, Washington, DC 20036.) SOCIETY OF AUTOMOTIVE ENGINEERS (SAE) SAE AS20708 - Synchros, General Specification For (
13、SAE documents may be obtained at http:/www.sae.org or from Society of Automotive Engineers, Inc., 400 Commonwealth Drive, Warrendale PA 15096.) 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 c
14、ited herein, 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 in the associate
15、d specification and herein (see 6.2). In the event of any conflict between the requirements of this specification and the associated specification, the latter shall govern. 3.2 First article or qualification. The requirement for first article or qualification shall be imposed by the associated speci
16、fication (see 4.2, 4.3, 6.2, and 6.4). 3.3 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirement
17、s, and promotes economically advantageous life cycle costs. 3.4 Materials. Materials shall produce no toxic, corrosive, or deleterious fumes and shall be resistant to corrosion due to electrolytic decomposition, fungus, fuels, salt fog, and any other atmospheric condition that may be encountered dur
18、ing operational use or storage. Nonmagnetic materials shall be used except where magnetic materials are essential. 3.5 Interface. 3.5.1 General. Transmitters conforming to this specification shall operate with indicators conforming to MIL-I-7057. 3.5.2 Adjustments. No special tools shall be required
19、 to adjust the transmitter. Hermetically sealed cases (see 6.3.1) shall have a means of adjustment accessible from the exterior of the case. It shall provide a range of at least 14 of scale adjustment. 3.5.3 Electrical connectors. The transmitter electrical connector shall be as specified in the acq
20、uisition document (see 6.2). If not so specified, the connector shall be in accordance Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-5350G 4 with figure 1, 14S-2P. 3.5.4 External wiring. External wiring between the transmitter and indicator
21、 shall be as shown on figure 2 or 3. 3.5.5 Power supply. The transmitter shall operate with a supply voltage between 22 and 30Vac at a frequency between 320 and 400Hz. 3.5.6 Electromagnetic interference and compatibility. The transmitter shall neither cause nor be susceptible to electromagnetic inte
22、rference. 3.6 Performance. 3.6.1 Case distortion. The operation of the transmitter shall be unaffected by case distortion (see 6.3.3). 3.6.2 Reliability. The reliability of the transmitter shall be as specified in the acquisition document. 3.6.3 Operation. Each transmitter shall be capable of operat
23、ing up to two indicators without a change in performance. 3.6.4 Dielectric strength. The transmitter shall withstand a potential of 500Vac, 60Hz for unsealed cases and 250Vac, 60Hz for sealed cases applied for 5 seconds between each pin of the electrical connector and the transmitter case. 3.6.5 Sea
24、soning. The transmitter shall meet the scale error requirements after experiencing 10,000 deflection cycles (see 6.3.4). 3.6.6 Endurance. The transmitter shall meet the scale error requirement after experiencing 60,000 deflection cycles (see 6.3.4). 3.6.7 Shock. The transmitter shall withstand a 20g
25、 shock with a duration of 11 milliseconds. 3.6.8 Acceleration. The transmitter shall withstand acceleration as specified in the acquisition document. 3.6.9 Humidity. The transmitter shall withstand humidity of 95 percent. 3.6.10 Overscale operation. The transmitter shall withstand an input equivalen
26、t to 150% of full scale indication for 10 minutes. 3.6.11 High temperature (non-operational; direct engine-mounted transmitters only). The transmitter shall withstand a temperature of 450 18F for 80 hours. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-
27、,-,-MIL-PRF-5350G 5 3.6.12 Torque. The transmitter shall develop a torque in the indicator of no less than 2,000 milligram millimeters per degree of angular displacement from synchronous operation in the range of -20 to 20 of angular displacement. 3.6.13 Sealing (hermetically sealed transmitters onl
28、y). The case leakage of the transmitter shall be no greater than 0.10 micron cubic foot per hour when the filling medium is nitrogen and helium, and no greater than 1.0 micron cubic foot per hour when the medium is 100% helium. 3.6.14 Scale error. The transmitter shall have a scale error as required
29、 in the acquisition document. 3.6.15 Friction error. The transmitter shall have a friction error as required in the acquisition document. 3.6.16 Electrical zero. With R2 connected to S2, and 26Vac, 400Hz electrical power applied to R1 and R2, the transmitter shall meet the following requirements: a.
30、 The voltage between S1 and S3 (S3S1) shall be at minimum, shall be in phase with rotor voltage E (R2R1), and shall remain approximately in phase as the rotor is turned counterclockwise through an angle not exceeding 180 from electrical zero. b. The voltage between R1 and S3 shall be at a minimum nu
31、ll and shall reach the minimum when the rotor is turned clockwise 30 from electrical zero. c. Clockwise rotation of the rotor, not exceeding 30 from electrical zero, shall cause an increase in voltage between S3 and S2 and a decrease in voltage between S2 and S1. 3.6.17 Damping. The damping of the t
32、ransmitter shall be as required in the acquisition document. 3.6.18 Electrical characteristics. 3.6.18.1 Open secondary. The current drawn by one self-synchronous motor shall not exceed 240 milliamperes with the secondaries (stator) open-circuited. 3.6.18.2 Power input. The transmitter power consump
33、tion shall not exceed 6.24 Volt-Amperes. 3.6.18.3 Secondary voltage. The maximum open-circuit voltage measured between any two secondary leads shall be 11.8 0.3Vac. The variation between the three maximum secondary voltages on any one synchro shall not exceed 0.2Vac. 3.6.18.4 Synchro type. The trans
34、mitter shall have electrical characteristics compatible with Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-5350G 6 those defined in AS20708, with the exception of electrical zero. 3.7 Item identification. Item identification shall be as req
35、uired in the acquisition document (see 6.2). 3.8 Interchangeable parts. All parts having the same manufacturers part number shall be functionally and dimensionally interchangeable. 3.9 Environmental conditions. The transmitter shall withstand the following environmental conditions. 3.9.1 Aircraft at
36、titude. The transmitter shall meet performance requirements in both the horizontal and vertical position. 3.9.2 Temperature range: a. Operating: -67 to 250 3F Remote mounted transmitters -67 to 374 3F Direct engine mounted transmitters b. Non-operating: -85 to 293 3F Remote mounted transmitters -85
37、to 450 3F Direct engine mounted transmitters 3.9.3 Pressure altitude. Pressure altitude up to 0.64 0.1 inch Hg (85,000 3,000 feet). 3.9.4 Vibration. The transmitter shall withstand the vibration conditions specified in tables I and II. Table I. Shock mounted transmitters Frequency (Hz) Displacement
38、in double amplitude (inch) and acceleration (g), if applicable 5-14 0.1 14-23 0.1 to 0.036 at 1g 23-74 0.036 74-2000 0.036 to 0.01 at 10g Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-5350G 7 Table II. Engine mounted transmitters Frequency
39、(Hz) Displacement in double amplitude (inch) and acceleration (g), if applicable 5-10 0.2 10-18 0.2 to 0.06 at 1g 18-99 0.06 99-2000 0.06 to 0.00015 at 30g 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein shall be in accordance with the associated speci
40、fication and this document and are classified as follows: a. First article or qualification inspection (see 4.2). b. Conformance inspection (see 4.3). 4.2 First article or qualification inspection. Transmitters shall be subjected to all tests in 4.6 and the tests specified in the associated specific
41、ation. 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 transmitter shall be subjected to the following tests. a. Examination (see 4.6.1) b. Scale error at room temperature (s
42、ee 4.6.2) c. Friction error (see 4.6.3) d. Aircraft attitude (see 4.6.4) e. Dielectric strength (see 4.6.5) f. Sealing (see 4.6.6) g. Electrical zero (see 4.6.7) 4.3.2 Sampling tests. Transmitters shall be subjected to the following sampling tests According to ANSI/ASQ Z1.4, at the inspection level
43、(normal, tightened, or reduced) specified in the acquisition document (see 6.2). a. Electrical characteristics (see 4.6.8) b. Seasoning (see 4.6.9) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-5350G 8 c. Endurance (see 4.6.10) d. Power sup
44、ply variations (see 4.6.12) e. Damping (see 4.6.13) f. Overscale (see 4.6.14) g. Low temperature (see 4.6.15) h. High temperature (see 4.6.16) i. Vibration (see 4.6.17) j. Low temperature exposure (see 4.6.18) k. Low pressure (see 4.6.19) l. Extreme high temperature (see 4.6.20) m. Acceleration (see
45、 4.6.25) n. Torque (see 4.6.28) 4.4 Test conditions. Unless otherwise specified in the acquisition document, all inspections shall be performed in accordance with the test conditions described below, or as specified in the acquisition document. 4.4.1 Standard atmospheric condition. Unless otherwise
46、specified in the individual test description, all tests shall be performed at ambient pressure and temperature. 4.4.2 Tapping. Unless otherwise specified in the individual test description, the transmitter shall be tapped before testing to overcome friction. 4.4.3 Test voltage. Unless otherwise spec
47、ified in the individual test description, the transmitter shall be tested with the voltage and frequency specified in 3.5.5. The voltage and frequency shall be maintained within 1% of the nominal value. 4.4.4 Standard production indicating unit. The transmitters shall be tested with a standard produ
48、ction indicating unit with a maximum error of 0.5 degree. 4.5 Requirements cross-reference matrix. Table III provides a cross reference matrix of the section 3 requirements tested or verified in the paragraphs below. Table III. Requirements cross-reference matrix Requirement Verification Requirement
49、 Verification 3.2 4.2 3.6.11 4.6.20.2 3.4 4.6.1, 4.6.22, 4.6.23 3.6.12 4.6.28 3.5.1 4.6.26 3.6.13 4.6.6 3.5.2 4.6.1 3.6.14 4.6.2 3.5.3 4.6.1 3.6.15 4.6.3 3.5.4 4.6.1 3.6.16 4.6.7 3.5.5 4.6.12 3.6.17 4.6.13 3.5.6 4.6.11 3.6.18.1 4.6.8 Provided by IHSNot for ResaleNo reproduction or networking permitted without licen
