1、MILITARY SPEC IF ICATION - Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to : using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this doc
2、ument or by letter. Commanding Officer , Naval Air Engineering Center y Systems v nginee;LrLg and Standardizatlon 3epartnent (code 93) , Lakehurst, NJ 08733, by T INDICATOR, BEARING - DISTANCE - HEADING; ID - 663D/U This specification is approved for use by the Naval Air Systems Command, Department
3、of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers design requirements and all performance requirements for the procurement of one type, Bearing - Distance - Heading Indicator ID-663D/U with integral light
4、ing, and servoed pointers and cow.pass card. 2. APPLICABLE DOCUMENTS 2.1 Government documents 2.1.1 Specifications and Standards. Unless otherwise specified (see 6.21, the following specifications and standards of the issue listed in that issue of the Department of Defense Index of Specifications an
5、d Standards (DODISS) specified in the solicitation, form a part of this specification to the extent specified herein. SPECIFICATIONS Feder a 1 BB-N-4 1 1 Ni trogen y Technical QQ-C - 3 20 - Chromium-Plating (Electrodeposited) QQ-N-290 Nickel Plating (Electrodeposited) QQ-P-4 1 6 Plating, Cadmium (El
6、ectrodeposited) Mil it ary MIL-P-116 Preservation, Method of FSC 6605 Licensed by Information Handling ServicesProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-22075C 66 m 777790b 0453422 b m MIL-1-2 2075C( AS) SPEC IF I CAT I O NS MILITARY (Con
7、tinued) MIL-M-3 17 1 MIL-E-5400 MIL-C-5 541 Magnesium Alloy, Processes for Pretreatment and Prevention of corrosion on Electronic Equipment, Aerospace General Specification for Chemical Conversion Coatings on Aluminum and Aluminum Alloys MIL-C-5 8 24 Co ur se Ind ic at o r ID-2 50A/ ARN MIL-S-7742 M
8、IL-A-862 5 MIL-C-14806 MIL-T 18303 MIL- S - 20 70 8 MIL-P-23408 MIL-L-25467 MIL-L-27160 MIL-G-8 1704 Screw Threads, Standard , Optimum Selection Series, General Specification for Anodic Coatings, for Aluminum and Aluminum Alloys Coating, Reflection Reducing, for Instrument Cover Glasses and Lighting
9、 Wedges Test Procedures; Preproduction, Acceptance and Life for Aircraft Electronic Equipment, Format for Synchros , General Specification for Plating: Tin-Cadmium (Electrodeposited) Lighting, Integral , Red, Aircraft Instrument, General Specification for Lighting, Instrument, Integral, White, Gener
10、al Specification for Glass, Aircraft Instrument, Lighting Wedge and Cover 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SPECIFICATIONS STANDARDS FEDERAL FED-STD-595 MILITARY MIL-STD-130 MIL-STD-143 MIL-STD-454 MIL-STD-461 MIL-STD-462 MIL-STD-704
11、MIL-STD-7 8 1 MIL-STD-7 8 5 MIL- STD-7 94 MIL-STD-810 MIL- STD-889 MIL-STD-2074 MS24241 Colors Identification Marking of U.S. Military Property Specifications and Standards, Order of Precedence for the Selection of Standard General Requirements for . Electronic Equipment 3 Electromagnetic Emission a
12、nd Susceptibility Requirements for the Control of Electromagnetic Interference Electromagnetic Interference Character- istics, Measurement of Aircraft Electric Power Characteristics Reliability Tests, Exponential Dis tribut ion Reliability Program for System and Equipment Development and Production
13、Parts and Equipment, Procedures for Packaging and Packing of Environmental Test Methods and Engineering Guidelines Dissimilar Metals Failure Classification for Re1 iabil ity Testing Connec tor-Recept acle , Electrical, Hermetic , Jam nut, Front mounting Provided by IHSNot for ResaleNo reproduction o
14、r networking permitted without license from IHS-,-,-MIL-I-22075C 66 977990b OL(5LL12LJ T W * MIL-I-22075C(AS) STANDARDS MILITARY (Continued) MS33558 MS33638 MS33737 Numerals and Letters, Aircraft Instrument Dial, Standard Form of Cases, Instrument, Flange-Mounted, Aircraft Nuts, Self-Locking, Clip-I
15、n-Type, Instrument Mounting (Copies of specifications, standards, handbooks, drawings, and publications required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) 2.2 Other publications Amer
16、ican Society of Testing and Materials ASTM-STD-B633-78 Zinc on Iron and steel, Electrodeposited coatings of (Copies of American Society of Testing and Materials standards should be obtained from: American Society of Testing and Materials 1916 Race Street Philadelphia, PA 19103) 3. REQUIREMENTS 3.1 Q
17、ualification - Indicators furnished under this specification shall be products which are qualified for listing on the applicable qualified products list at the time set for opening of bids (see 4. and 6.). 3.2 Selection of government documents. Except as provided in 3.2.1 and 3.2.2, specifications a
18、nd standards for necessary commodities and services not specified herein shall be selected in accordance with MIL-STD-143. 3.2.1 Standard parts. With the exception of 3.2.2, MS and AN standard parts shall be used where they suit the purpose. They shall be identified on the drawings by their part num
19、bers. 3.2.2 Commercial parts. Commercial parts having suitable properties shall be used when, on the date of invitations for bids, there are no suitable standard parts. In any case, commercial parts such as screws, bolts, nuts, cotter pins, having suitable properties, may be used provided: (a) They
20、can be replaced by the standard parts (MS or AN) without a 1 t era t ion. (b) The corresponding standard part numbers are referenced in the parts list, and if practicable, on the contractors drawings. . 4 o Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS
21、-,-,-3.3 Materials. Materials shall conform to applicable specifications and shall be as specified herein. Materials for which there are no applicable specifications, or which are not specifically described herein, shall be of the best quality, of the lightest practicable weight and suitable for the
22、 purpose intended, 3.3.1 Critical materials. Noncritical materiais shall be used where practicable. Where the use of a critical material is essential to meet specification requirements, the material used shall be the least critical of those which are adequate for the purpose. 3.3.2 Nonmagnetic mater
23、ials. Nonmagnetic materials shall be used for all parts of the indicator except where magnetic materials are essential. 3.3.3 Metals. Metals shall be of the corrosion resistant type, or shall be suitably protected as specified herein to resist corrosion due to fuels, salt spray, or atmospheric condi
24、tions to which the indicator may be subjected when in storage or during normal service life. - 3.3.3.1 Dissimilar metals. Dissimilar metals as defined in MIL-STD-889 shall not be used in intimate contact with each other, unless protection against electrolytic corrosion is provided. 3.3.3.2 Magnesium
25、 alloy parts, Magnesium alloy parts shall be treated in accordance with MIL-M-3171. When abrasion resistance is a factor, an anodic treatment approved by the procuring activity shall be used. 3.3.3.3 Aluminum alloy parts. Unless otherwise specified, aluminum alloy parts shall be covered with an anod
26、ic film conforming to MIL-A-8625. Small holes, pipe threads, and case inserts need not be anodized. Aluminum alloys which do not anodize satisfactorily shall be coated with a chemical film in accordance with MIL-C-5541. 3.3.3.4 Iron and steel parts. Iron and steel parts which are in hermetically sea
27、led cases shall be cadmium plated in accordance with QQ-P-416 Parts which are not in sealed cases shall be chromium, nickel, or zinc plated in accordance with QQ-C-320, QQ-N-290, or AS%-STD-B633-78, respectively. Parts in a confined space in the presence of organic material shall be tin-cadmium plat
28、ed in accordance with MIL-P-23408. The class and type of plating shall meet the requirements of 3.3.4. 3.3.4 Protective treatment. When materials are used in the construction of the indicator that are subject to atmospheric or environmental conditions likely to cause corrosion in normal service life
29、, they shall be protected against corrosion in a manner that will in no way prevent compliance with the performance requirements of this specification. Finishes and protective coatings which will crack, chip, or scale during normal service life or are affected by extremes of atmospheric or environme
30、ntal conditions, shall not be used. 3.3.5 Fumes and vapors. Materials used in the construction of the indicator shall not produce corrosive, deleterious, toxic fumes or vapors under the conditions specified herein. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without licens
31、e from IHS-,-,-MIL-I-22075C 66 W 7779706 045L42b 3 W h MIL-1-2 2075C( AS) I 3.4 Design and construction. The indicator shall convert 26/11.8 volt type synchro signals furnished by associated equipment of 6.1 into numerical indications of distance and pointer-dial indications of heading and bearing.
32、The indicator shall display distances from O00 up to 1999 nautical miles. The compass card and the two bearing pointers shall display heading and bearing information throughout 360 degrees of rotation. The distance presentation shall be positioned by synchro receivers. Bearing pointers and compass c
33、ard shall be positioned by a self-contained servo-mechanism and amplifier controlled by the error signal of a synchro control transformer. The servo components shall be inter-changeable. The indicator shall be so constructed that no parts Will work loose in service and will withstand the normal shoc
34、ks, vibrations, and such other conditions as are incident to service, shipping, storage, and installation without a failure. 3.4.1 Maintenance. The design shall be such as to facilitate as much as possible disassembly, repair or overhaul, service maintenance, and reassembly using those tools and ite
35、ms of maintenance equipment which are normally available as commercial standards. 3.4.2 Case. The case shall conform to MS33638 for the 3-inch size. The dimension “L“ shall not exceed 7.5 inches. The case and mounting flange shall be made of nonferrous material, uniform in texture, having a smooth s
36、urface, and shall be hermetically sealed. The case shall be finished with a lusterless black material, Color No. 37038 of FED-STD-595. The finishing material shall be. of a durable type to withstand usage encountered in service. - 3.4.2.1 Hermetic sealine;. The case shall provide a hermetically seal
37、ed encIosure for all of the mechanism. The case shall be so constructed that it may be opened, the mechanism removed, replaced, and the case resealed at least three times, This shall be possible without the use of any special tool, jig or fixture, unless such device is specifically approved by the p
38、rocuring activity. The sealing of the case shall not be dependent upon any material which will be adversely affected by any environment to which the indicator may be subjected in normal use in military aircraft. 3.4.2.2 Filling medium. The filling medium shall be a mixture of 90 percent nitrogen and
39、 10 percent helium or a filling medium approved by the procuring activity. The nitrogen used shall be in accordance with BB-N-411, Type I, class 1, Grade C. The filling medium shall not contain more than 0.006 milligram of water vapor per liter (dew point -65C) at the filling pressure. The absolute
40、pressure of the filling medium in the case shall be 12 0.1 atmosphere. 3.4.3 Weight. The weight of the completely assembled indicator shall not exceed 3.5 pounds. 3.4.4 Screw threads. Screw threads shall be in accordance with Requirement 12, Application of Fastener Hardware, of MIL-STD-454 and MIL-S
41、-7742, 3.5 Electrical requirements. J Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-d * 3.5.1 Electrical power requirements. The indicator shall meet all applicable requirements and shall give specified performance from the following power sources
42、with characteristics as defined in MIL-STD-704, where applicable, having limits as specified herein. specified amounts. The power required shall not exceed the (1) AC Power (Single Phase) 26 Volt (Constant Frequency) Operating Voltage Limits Operating Frequency Limits Power (2) DC Power 28 Volt Syst
43、em Operating Voltage Limits Power (3) AC or DC Power 5 Yolts Operating Voltage Limits Power Red or White Lighting 24 to 28 Volts 380 to 420 HZ 45 VA 25 to 29 Volts 12 Watts 4.9 to 5.1 Volts 4.0 Watts Each 3.5.2 Undervoltage protection. The indicator shall not be damaged by voltages below the minimum
44、 specified and shall automatically resume normal operation when the voltage is within the specified limits. 3.5.3 Electronic parts. Electronic parts and the application thereof shall be in accordance with MIL-E-5400. * 5-volt integral lighting in accordance with MIL-L-25467 and MIL-L-27160. 3.5.4 Il
45、lumination of display. The indicator shall be provided with * conform to MIL-L-25467 and MIL-L-21760. 3.5.5 Lamps. The lamps shall be located within the case and shall * 3.5.6 Electric connector. The electric connector used shall be a hermetically sealed MS24241M21-30N or an approved equivalent. * 3
46、.5.7 Electrical connections. The connections shall be made to the connector mounted on the indicator for the following external circuits. A. Lead iiYci of compass card synchro B. Lead “X“ of compass card synchro C. Lead “Z“ of compass card synchro D. Lead “C“ of compass card synchrofservo and intern
47、al ground E. F. Lead “Yii of single bar bearing pointer sychro H. Lead “X“ of single bar bearing pointer sychro J. 26 Vac “H“ single bar bearing pointer servo K. 26 Vac “H“ compass card servo connection for 28 Vdc and 5 V lighting Lead “Z“ and “C“ of single bar bearing pointer sychro/servo 7 Provide
48、d by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-22075C 66 W 9737906 OY5L428 7 MIL-I -2 20 7 5C ( AS ) , L. M. N. P. R. S. T. u. V. W. X. Y. 2. a. b. d. f. g* h. i. C. Lead “H“ of all distance synchro receivers Lead “X“ of double bar bearing pointer sy
49、nchro Lead “Y“ of double bar bearing pointer synchro Lead “Y“ of hundreds synchro receiver Lead “X“ of hundreds synchro receiver Lead “X“ of tens synchro receiver Lead “Y“ of tens synchro receiver Lead “Yii of units synchro receiver Lead “X“ of units synchro receiver Lead “2“ and “C“ of all distance synchro receivers +28 V dc servo amplifier power t28 V dc warning flag and thousands flag excitation IOFF warning flag control (-1 26 Vac “H“
