1、MIL-I-2719bC 66 m 7397906 0134685 7 m c -/A- Zr 11 March 1988 SUPERSEDING MIL-1-27! 196B( USAF) 22 AUGUST 1977 MILITARY SPECIFICATION INDICATOR, VERTICAL AAU-9/A, INTEGRALLY LIGHTED This specification is approved for use within the Department of the Air Force, and is available for use by all Departm
2、ents and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This-specification establishes the requirements for one type of integrally lighted vertical velocity indicator, range O to 6,000 feet per minute climb and descent. r J 2. APPLICABLE DOCUMENTS 2.1.1 Specifications and standards. The
3、following specifications and standards, form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, c
4、ited in the solicitation. . PPP-B-60 1 PPP-B-636 MILITARY MIL-P- 1 1 6 DOD-D-1000 MIL-C-5541 MIL-S-7742 MIL-S-85 12 MIL-A-8625 MIL-0-14806 Boxes, Wood, Cleated Plywood Box, Shipping, Fiberboard Preservation, Method Of Drawings, Engineering And Associated Lists Chemical Conversion Coatings On Aluminu
5、m Alloys Screw Threads, Standard, Optimum Selected Series. General Specification For Support Equipment, Aeronautical, Special, General Specification For The Design of Anodic Coatings, For Aluminum.And Aluminum Coating, Reflection Reducing, For Instrument Cover Glasses And Lighting Wedges Alloys I Be
6、neficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Oklahoma City Air Logistics Center/MMEDO, Tinker AFB OK 73145-5990 by using the self-addressed I Standardization Document Improvement Proposal (DD F
7、orm 1426) appearing at the end of 1 t r. o I AMSC NIA FSC 6610 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. r -. THIS DOCUMENT CONTAINS 21 PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-27L7bC bb M 7
8、797706 OL34bb O = MIL-L-25467 MIL-L-27 160 DOD-D-1000 MIL-C-83488 STANDARDS FEDERALS FED-STD-595 MILITARY MIL-S TD- 1 2 9 MIL-STD-130 MIL-STD-143 MIL-STD-454 MIL-STD-810 MIL-STD-859 MIL-STD-889 MS28105 MS 3 3 5 49 MS33558 MS 3 35 85 MS 33 6 4 9 Lighting, Integral, Red, Aircraft Instrument, General S
9、pecification For Lighting, Instrument, Integral, White, General Specification For Drawings, Engineering And Associated Lists Coating, Aluminum, ION Vapor Deposited Colors Marking For Shipment And Storage Identification Marking Of US Military Property Standards And Specifications, Order Of Precedence
10、 For The Selection Of Standard General Requirements For Electronic Equipment Environmental Test Methods And Engineering Guidelines Standard Calibration Table For Aeronautical Pressure Measuring Equipment Dissimilar Metals Cover Glass, Aircraft Instrument Dial Case, Instrument, 2-3/4 Dial, With Sump,
11、 Standard For Numerals and Letters, Aircraft Instrument Dial, Standard Form Of Pointers, Dial, Standard Design Of Aircraft Instrument Bosses, Fluid Connection-Internal-Straight Thread (Copies of specifications, standards, drawings, and other Government documents required by contractors in connection
12、 with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting activity.) 2.2 Other publications. to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted shall be those listed in the issue
13、of the DODISS specified in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS shall be the issue of the nongovernment documents which is current on the date of the solicitation. The following document(s) form a part of this specification a American Society
14、 For Testing And Materials (ASTM) I l ASTM D3951 Packaging, Commercial 2 e- ,. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-P, 3 I l 1 I 1 I 1 I I l I ! I l I I l I 1 I I i I i I i l I I MIL-I-27L7bC bb 77777Ob 013L1b7 2 = (Application for copies
15、should be addressed to: ASTM, 1916 Race St, Philadelphia PA 19103) . (Nongovernment standards and other publications are normally available from the organizations which prepare or which distribute the documents. may be available in or through libraries or other informational services.) These documen
16、ts also 2.3 Order of precedence. In the event of a conflict between the text of this . specification and the references cited herein (except for associated detail specifications, specification sheets or MS standards), the text of this specification shall take precedence. Nothing in this specificatio
17、n, however, shall supersede applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified in the contract or purchase order, a sample shall be subjected to first article inspection (See 4.4 and 6.4). 3.2 Selection of specifications a
18、nd standards. Specifications and standards for necessary commodities and services not specified herein shall be selected in accordance with MIL-STD-143 except as provided in 3.2.1 and 3.2.2. 3.2.1 Commercial parts. where, on the date of invitation for bids, there are no suitable standards parts. In
19、any case, commercial screws, bolts, nuts, and cotter pins, having suitable properties may be used with prior approval provided: They can be replaced by the standard parts (MS or AN) without alteration. The corresponding standard part numbers are referenced in the parts list and, if practicable, on t
20、he contractors drawings. A list of all such parts is submitted to contracting activity for approval. Commercial parts having suitable properties may be used 3.2.2 Standard parts. With the exceptions in 3.2.1, MS and AN standards parts shall be used where they suit the purposes. their part numbers. T
21、hey shall be identified on the drawings by 3.3 Materials. Material shall be as specified herein. Materials not specified shall be selected by the contractor and shall be subject to all provisions of this specification. 3.3.1 Nonmagnetic materials. the indicator, except where magnetic materials are e
22、ssential. Nonmagnetic materials shall be used for all parts of 3.3.2 Toxic and corrosive fumes. Materials, as installed in the indicator and under the service conditions specified herein, shall not liberate deleterious or corrosive fumes. .This shall include any fungicidal agents that are used. 3.3.
23、3 Protective treatment: When materials are used in the construction of the indicator that are subiect to deterioration when exposed to climatic and environmental conditions likely to occur during service usage, they shall be protected against such deterioration in a manner that will in no way preven
24、t compliance with the performance requirements of the specification. proteetive coating that will crack, chip, or scale with age or extremes of climatic or environmental conditions shall be avoided. The use of any 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license
25、 from IHS-,-,-MIL-I-27LSbC 66 7997706 OL3Yb Y - 3.3.4 Fungusproof materials. Materials that are nutrients-for fungi shall not be used where it is practical to avoid them. Where used and not hermetically sealed, they shall be treated with a fungicidal agent acceptable to the contracting activity. How
26、ever, if they are used in a hermetically sealed enclosure, fungicidal treatment will not be necessary. 3.3.5 Metals. protected to resist corrosion during normal service life. Metals shall be of the corrosion-resistant type, unless suitably 3.3.5.1 Dissimilar metals. Unless suitably protected against
27、 electrolytic corrosion by means of protective coating or hermetic sealing, intimate contact of dissimilar metals shall be avoided. Dissimilar metals are defined in MIL-STD-889. 3.3.6 Nonferrous materials. Nonferrous materials shall be used for all parts of the indicator except where ferrous materia
28、ls are essential. 3.3.6.1 Protection of nonferrous materials. Nonferrous materials contained within hermetically sealed enclosures shall be considered suitably protected from corrosion. Requirements specified for fungicidal and corrosion protective treatment and anodizing of aluminum alloys parts wi
29、ll not be applicable for parts within hermetically sealed enclosures. 3.3.7 Recycled and reclaimed materials. shall be encouraged to the maximum extent possible without jeopardizing the intended end use of the item. The use of recycled and reclaimed materials 3.4 Design and construction. The indicat
30、or shall conform to figure 1 with the design being reasonably simple to permit overhaul or repair without requiring numerous special tools and fixtures. Special tools and commercial standard to,ols are defined in MIL-S-8512. Special tools shall be subjected to the approval of the contracting activit
31、y. 3.4.1 Indicator constructed. Indicators shall be constructed to withstand the strains, jars, vibrations, and other conditions incident to shipping, storage, installation, and service, without failure. 3.4.2 Performance. The indicator shall be capable of meeting the test requirements specified in
32、Section 4 when subjected to the following conditions or any natural combination thereof: a. Temperature. Temperature over the range of -65OC to 7l0C. b. Vibration error. Vibratioii with a double amplitude of between .O03 and .O05 inch at frequencies from 5 Hz to 50 Hz. C. Vibration endurance. Vibrat
33、ion endurance at a double amplitude between 0.018 to 0.02 inch with the frequency varied from 500 to 3,000 cpm uniformly. d. Humidity. Relative humidity up to 100 percent including conditions wherein condensation takes place in the form of both water and frost. e. Fungus. Fungus growth as encountere
34、d in tropical climates. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-I-27176C 66 m 7977706 0134687 b m MIL-I- 27 I96 C (USAFI I /ADJUSTING SHAFT STATIC PORT MS33649-4 7 I 1-6 MAXI NAME PLATE LOCATION - ELECTRICAL CONNECTOR OPTIONAL -I.OOO k
35、- REAR VIEW DIMENSlONS IN INCHES FIGURE I. Case. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-27176C 66 m 7977706 0134690 2 m ._ MIL-I-27196C(USAF) TABLE I. Tolerance. Ind Test Setting EPm 500 1,000 2,000 3,000 4 , O00 5 O00 2,000 4,000 2,
36、000 Alt In terval ft 1,000 to 1,500 1,000 to 2,000 2,000 to 4,000 15,000 to 17,000 28,000 to 30,000 Tolerance Rm Temp Ascent and Descent f Pm 100 200- 300 300 400 500 300 4 0.0 300 400 Low . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-2717b
37、C bb m 77777Ob 0134b72 b m e DIMENSIONS IN INCHES UhLESS OTHERWISE SPECIFIED, TOLERANCES: FRACTIONS 2 .O156 AIUGLES 2 O3 15 I F; FIGURE 2. Diol a - . 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-9 MIL-I-27L76C 66 W 7797706 OL39693 8 i 3.11 Elect
38、rical connector. The electrical connector shall be a Deutsch Connector DSM5600-3P, or equal, and located as shown on figure 1. a 3.12 Lightine The indicator shall be integrally lighted with two parallel lighting circuits, a white lighting circuit and a red lighting circuit as shown n figure 3. The r
39、ed lighting shall be in accordance with MIL-L-25467 and the white lighting shall be in accordance with MIL-L-27160. In the event there is any conflict between this specification and either MIL-L-25467 or MIL-L-27160, this specification shall govern. The lighting shall be subject to approval by the c
40、ontracting activity. Lighting shall operate on SV ac or dc. The integral lighting shall be comparable to, and in brightness balance with, a “prime standard“ indicator. 3.12.1 Prime standard. The prime standard lighting reference instrument shall be prepared as follows: 5 shall be measured in footlam
41、berts for brightness level; a minimum of 10 areas covering the entire face of the indicator shall be measured for color. The prime standard instrument and its recorded overall brightness and color measurements shall be approved by the contracting activity. hours of operation or 120 days, whichever o
42、ccurs first, to determine any change in brightness of color. require return of the standard. d a minimum of 20 areas covering the entire face of the indicator The standard shall be checked at least after every 50 Variations greater than 220 percent in two or more areas shall 3.13 Finishes and protec
43、tive coatings. 3.13.1 Aluminum alloy parts. Aluminum alloy parts shall be covered with an anodic film conforming to MIL-A-8625 except as follows: Dials, small holes, and case inserts need not be anodized. Aluminum alloys which do not anodize satisfactorily shall be coated with a chemical film in acc
44、ordance with MIL-C-5541. Where primary purpose of the treatment is to afford a suitable paint base, chemical treatments in accordance with MIL-C-5541 may be used in lieu of anodizing. Castings containing nonaluminum alloy integral inserts may be treated with a chemical film in accordance with MIL-C-
45、5541 in lieu of anodizing. When abrasion resistance is a factor, chemical films in accordance with MIL-C-5541 shall not be used in lieu of anodizing. , 3.13.2 Steel parts. Steel parts shall be coated with ion vapor deposited aluminum, where practicable, in accordance with MIL-C-83488, type I or II a
46、s applicable and of a class that is adequate to achieve the degree of protection required. Other protective coating, in lieu of MIL-C-83488 may be used if demonstrated to be satisfactory and approved by the cognizant engineering activity. satisfactory alternative processes can be used. Cadmium plati
47、ng must be avoided when 3.14 Screw threads. The threads of all machine screws 0.060 inch diameter or larger shall conform to MIL-S-7742. 3.15 Weight. The indicator shall be weighed completely assembled, without shipping plug and mounting screws, and shall not exceed 1.75 pounds. 3.16 Markings. The f
48、ollowing markings shall be finished in lusterless white, Color No. 37875 of FED-STD-595. The dial and pointer markings dimensions shall be as follows : 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-27L7bC bb 77777Ob OL34b74 T W MIL-l-27196C
49、 (USAF) DEUTSCH CONNECTOR DM5600- 3P FIGURE 3. Electrical connector. io. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 MIL-I-27176C 66 m 7777906 0334675 3 W l l l I I I i I I I I I I I I i I I I r I Zero graduation 1,000 ft graduations 100 ft graduations 500 ft graduations Arc connecting 6,000 ft Marks Numerals .5 Numerals O, 1
