NAVY MIL-S-85018 A-1978 SECOND ORDER ATTITUDE REFERENCE SYSTEM (SOARS) AN ASN-116《AN ASN-116二阶姿态参考系统(跃上)》.pdf

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1、5 Ma 1978 SUPE Reproduction and Acceptance for Aircraft Electronic Equipment, Format for Nomenclature and.Nameplates for Aeronautical Electronic and Associ ated Equi pnient Thermal Performance Evaluation, Airborne, Electronic Fastener, Control Panel , Aircraft Equipment Lighting, Instrument, Integra

2、l, General Specif Lighting, Instrument, Integral, White, General for Detector, Azimuth, Magnetic DSU-4A/A cation for Speci f i cat on Miniature, Circular, Environment Resisting, Series I Gyroscope, Assembl ies, Attitude and Directional Reference Instrunients for Aircraft; Preservation, Packaging and

3、 Packing Barrier Coating Solution and Solvent Bearing, Ball, Precision for Instruments and Rotating Components 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Naval Air Systems Command AR-5 AR-10 . STANDARDS Federal FED-STD-595 Militarx MIL-STD-461

4、 MIL-STD-462 MI L-STD-470 MI L-STD-4 71 MI L-STD-704 MIL-STD-781 MIL-STD-785 MIL-STD-794 MIL-STD-810 MI L-STD-1304 MIL-STD-1334 MIL-STD-2068 (AS) MI L-STD-20 74 (AS) MIL-STD-2076 (AS) MI L-STD-2077 (AS ) MS17322 MS2 7651 MS23558 Microelectronic Devices Used in Avionics Equipment, Procedures for Sele

5、ct ion Maintainability of Avionics Equipment and Systems, General Requirements for Col ors El ectroinagnet for Equipment cy Interference Characterist cs, Requireinen.ts El ectromagnetic, Interference Characteristics , Measurement of Maintainability Program Requirements Hai ntai nabil i ty Veri fi ca

6、t ion/Deinonstrat i on Eva1 uat i on Electric Power, Aircraft, Characteristics and Uti1 ization of Reliability Tests, Exponential Distribution Re1 i abi 1 i ty Prograin for Systems and Equi pment , Devel opment and Production Parts and Equipment , Procedures for Packaging of Environmental Test Metho

7、ds Re1 i abil i ty Reports Process for Barrier Coating of Anti-Friction Bearings Re1 i abi 1 i ty Devel opment Tests Fail Ure Classification for Reliabi 1 i ty Testing Unit Under Test Compatibility with Automatic Test Equipment, General Requirements for Test Program Sets, Grneral Requirements for Me

8、ter, Time Totalizing, Miniature Digital, 115V, 400 Hz Meter, Time Totalizing Hermetically Sealed, 115V, 400 Hz Pirimrals and LetZei-s, Aircraft Instruiiient Dial , Staiidard Form of 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL- S-8 5018A (AS

9、) 2.1.1 Availability of Documents - When requesting specifications, standards, drawings, and pub1 ications, refer to both title and number. Copies of this specification and applicable specifications required may be obtained upon application to the Commanding Officer, Pub1 ications and Forms Center,

10、Code 105, 5801 Tabor Avenue, Philadelphia, Pennsylvania 19120. 3. REQUIREMENTS 3.1 Preproduction - This specification makes provision for preproduction 3.2 Parts and Materials - In the selection of parts and materials fulfill- In so doing, testing. ment of major design objectives shall be the prime

11、consideration. the following shall govern: (a) (b) (c) Microelectronic Techno1 ogy shall be considered and microel ectroni c items shall conform to requirements specified herein. All parts and materials requirements shall conform to Specification MIL-E-5400, Revi si on L. Nonrepai rab1 e subassembl

12、ies chal 1 be used in accordance with Specification AR-10 and as outlined in Specification MIL-E-5400. 3.2.1 Nonstandard Parts and Materials Approval - Approval for the use of nonstandard parts and material s not previously government approved (incl uding electron tubes, transistors, diodes, and mic

13、roelectronic devices) chal 1 be obtained as outl ined in Specification MIL-E-5400. be approved as outl ined in AR-5. Microelectronic devices shall 3.2.2 Mi.croelectronic Modular Assemblies - Conformal coatings, encapsulents embedments or pottinq materials used with modular acsembl ies containins int

14、e- grated circuits and discrete parts shall be easily removed without damge to the as s emb 1 y. 3.2.3 Modules - The electronic portions of the equipment shall be func- ti onal ly modul ari zed in accordance with AR-10. 3.3 Design and Construction - The equipment shall conform with all appli- cable

15、requirements of Specification MIL-E-54U0 for design, construction and workmanship, except as otherwise specified herein. 3.3.1 Total Weight - The total weight of the equipment, excluding cables, shall be a minimum consistent with good design and shall be 29.5 pounds. 3.3.1.1 Form Factor - The total

16、volume of Second Order Attitude Reference System, excluding cablesand mounts, shall not exceed 825 cubic inches. The external surfaces except as specified herein shall be painted lusterless gray, color number 36231, in accordance with FED-STD-595. 3.3.2 Reliability - The contractor shall conduct a r

17、eliability test program in accordance with MIL-STD-785. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-BOIJBA bh 7779406 OL15bL 3 = P s. MIL- S-8 501 8A( AS) 3.3.2.1 Operational Stability - The equipment shall operate with satis- factory per

18、forinance, continuously or intermittently for a period of at least 2500 hours without the necessity for readjustment of any controls that are inaccessible to the operator duri fig normal use. 10,000 hours wi tli reasonable servi ci ng and rep1 acement of parts. ing scheduled replacement shall be spe

19、cified by the contractor. including any Buil t-in-Test provisions, shall have 1250 hours of mean time between failures (i4TBF) when tested and accepted as outlined under the requirements of 4.4.3. The MTBF of the components shall be: Displacement Gyroscope 3000 hours, Electronic Control Ampl ifier 2

20、500 hours, Controller 30,000 hours and Electronic Compass Compensator 30,000 hours. 3.3.2.4 Time Totalizing Reter - The following units shall contain time totalizing meters in accordance with Specification MIL-M-7793. - Unit Type of Meter 3.3.2.2 Operating Life - The equipment shall have a total ope

21、rating life of Parts requi r- 3.3.2.3 Reliability in Mean Tinie Between Failures (IYlTBF) - The system, ispl acement Gyroscope Assembly MS27651 cab fac Electronic Control Ampl ifier MS27651 or MS17322 3.3.3 Cabling and Connections - 3.3.3.1 es and connectors in accordance with Specification MIL-E-54

22、00. Cables and Connectors - The equipment shall provide for the use 3.3.3.2 ory operation using external wiring in accordance with the applicable Interconnection Cabling - The equipment shall be capable of sat requireiients of Specification MIL-W-5088. The external wiring chal 1 be un- of S- shielde

23、d, except that a nuiiieber of the individual wires shall-be shielded when necessary to meet interference control requirements. External cables and that portion of the connectors attached to the cables shall not be supplied as part of the equipment specified herein. accordance with Fi yure 7. shall b

24、e in conformance with MIL-C-38999 Series 1. All component connectors shall be protected by connector caps during shipment. 3.3.4 , Control Panels - All rack or console mounted control panels shall conform to the applicable requirements of specification MIL-C-6781. figuration of all panels must be ap

25、proved by the procuring activity. Interchangeability - The equipment shall meet the interchangeability requirements of Specification NIL-E-5400. Electromagnetic Interference - The emission and susceptibility of equipment confoririing herein to electroinaynetic interference shall meet CEO1, CEU3, CE0

26、4, CS01, CS02, CS06, KEO1, RE02, RSO1, RS02, RS03, Transient Spike I Generation, 2nd Relay Transient Susceptibility requirements of MIL-:TU-461. The interconnection cabling shall be in 3.3.3.3 Electrical Connectors - External connectors on the SOARS components The con- 3.3.5 3.3.6 Provided by IHSNot

27、 for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-S-BSOLA 66 W 9799906 045bL9 5 3.3.7 Provisions for Maintainability - The Maintainability Program, built-in test equipment features, construction and packaging, provisions for test points, and other maintainability

28、parameters shall be as specified in Specification AR-10. The following maintainability requirements shall be considered in the set and component design. (1) Minimization of the complexity of maintenance tasks (for example: calibration, adjustments, inspection, etc) by maximum use of a design which i

29、ncludes optimum interchangeability and use of standardized equipment or commercial items. (2) Rapid and positive recognition of equipment malfunction or marginal pe r f o rma nc e. (3) Rapid and positive identification of the replaceable defective part, assembly or component. (4) Miniinum numbers an

30、d types of tools and test equipment needed to perform maintenance. (5) Optimum accessibility in all systems, equipments, and components requiring maintenance, inspections, removal or replacement. 3.3.7.1 Maintenance Procedures - When specified by the contract, the contractor shall establish a comple

31、te maintenance procedure which shall be submitted to the procuring activity for approval at the time specified in the contract. Maintainability provisions shall conform to the requirements of MI L-STD-470. 3.3.7.1.1 Maintainability Prediction Reports - When specified by the contract, the contractor

32、shall prepare maintainability prediction reports in accordance with AR-10. 3.3.7.1.2 Compatibility with VAST - The equipment shall be compatible with the Automatic Test Equipment (ATE) and shall meet the requirements of MIL-STD- 2076(AS). MIL-STD-Z077(AS). If Test Program Sets exist for the equipmen

33、t, and changes to the equipment are made that will effect the fault diagnosis procedure, changes to the existing Test Program Sets shall be prepared as part of the equipment changes in accordance with MIL-STD-Z077(AS), and serial number assigninent, namepl ate approval and identification marking sha

34、ll be in accordance with Specification MIL-N-18307. When required Test Program Sets shall be furnished in accordance with 3.3.8 Nomenclature, Nameplates and Identification Marking - Nomenclature 3.3.9 Standard Conditions - The following conditions shall be used to establish normal performance charac

35、teristics under standard conditions and for making bench tests. Temperat Ure Magnetic Fi el d Room ambient (25OC plus or minus 10 OC) .18 oersted horizontal .54 oersted vertical t E 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-BOIJA bb m 7

36、7777Ob OY58b20 L m Altitude riormal ground Vi brat ion None Humidity Room arnbient up to 95% relative humidity Input Power Voltage 115/200 plus or minus 1.5 V ac, 400 Hz, 3 phase Panel lighting voltage, 5 f .1 V ac, 400 Hz 3.3.10 Service Conditions - The equipment shall operate satisfactorily under

37、any of the environmental service conditions or reasonable combin2tion of these conditions as specified in Specification MIL-E-5400 for Class 2 equipment. 3.3.10.1 Acoustical Noise - The equipment shall operate satisfactorily after being subjected to an acoustical noise sound pressure level of 140 dB

38、 for a period of 30 minutes. 3.3.11 Reaction or Warm-Up Time - The time required for the system to operate shall be kept to a minimum and shall not exceed 1.0 minute under standard conditions and 1.5 minutes at extreme service conditions. 3.3.12 Input Electrical Power - 3.3.12.1 Operating Power - Th

39、e equipment shall meet al 1 appl icable requirements of CIIL-STD-704 and shall give specified performance when energized frorn the following power sources having characteristics and limits as defined in MIL-STD-704. The power required shall not exceed the specified ainounts. Alternating Current Powe

40、r (3-Phase, 4-!.lire), 115/200 volts, Category B, 300 volt-amperes maximum, 200 volt-amperes after 90 seconds. Lighting Power - Input pouer for lighting shall require not more than 1.5 amperes at 5 volts. 3.3.12.3 Degraded Performance - Degraded performance wi 11 be permitted for voltage transients

41、only as specified in MIL-STD-704 (Category B). operation shall return to normal with no resulting damage to the equipment, 3.3.12.2 (7.5 volt amperes) System 3.3.13 Cooling - 3.3.13.1 Thermal Conditions - The system shall operate satisfactorily under 3.3.13.2 Operating Temperature Check Point - The

42、Electronic Control the thermal conditions specified in HIL-E-5400 Class 2. Amplifier (ECA) shall have a point accessible on the outer surface of the equipment for monitoring the temperature(s) of the most critical part(s) inside. The operating temperature(s) of the part(s) selected for the check poi

43、nt shall be determined from the evaluation by MIL-T-23103. This check point shall be clearly.marked and shall be incorporated into equipment delivered not later than 45 days after the procuring activitys approval of the cooling design data. 7 Provided by IHSNot for ResaleNo reproduction or networkin

44、g permitted without license from IHS-,-,-MIL- S- 8 5 O 18A ( AS ) 3.3.14 Gyroscope Bearings - 3.3.14.1 Rotor Bearing Lubrication - The rotor bearing shall be lubricated with Mobil RL-743A oi 1 conforming to MTL-B-81793. 3.3.14.2 Bearing Lubrication - The lubricating oil used in gimbal bearings shall

45、 be Mobil-143A conforming to MIL-B-81793. 3.3.14.3 Barrier Film Bearing Coating - All Rotorace inotor bearings shall be processed in accordance with MIL -STD-l 34. The coating material shall be in accordance with MIL-B-81744. Al 1 Rotorace motor bearings, including chamfered races or corners, and i

46、ncl udi ng i nterfaci ng parts where appl i cab1 e, shall be barrier coated. 3.3.14.4 Ball Bearin s - Ball bearings shall be ABEC-5 grade or better. Teflon separators -i-+ sha be used on gimbal bearings where the bearing design permits. Spin rotor bearings shall have porous separators impregnated wi

47、tti Mobil RL-743A per MIL-B-81793 and shall be ABEC-7 or better. 3.3.14.5 Ball Bearing Pre-Loading - Means shall be provided for preloading an al ignnent without causing eccentric loading unless otherwise authorized. 3.4 Performance - Unless otherwise specified in the approved test plans, values set

48、 forth to establ ish the requirements of satisfactory performance apply to performance under both standard and extreme service and input power condi- tions. When reduced performance under the extreme conditions is acceptable, tolerances or values setting forth acceptable variations from the performa

49、nce under the standard conditions will be specified. 3.4.1 Operation - The Second Order Attitude Reference System (a flight safety reference system) shall be an all attitude source of roll, pitch and heading angul ar displ acement signal s for other airborne instal 1 ed equi pments , including flight control and reference, navigation, weapons del iveries and direct presentation or displays. Roll information shall be continuous through- out 360 degrees and