1、MIL-C-7135F (AS) 5 September 1967 Superseding MIL-C-7135E (WEP) 1 February 1964 MILITARY SPECIFICATION COMPRESSOR; PNEUMATIC, 3,000 PSI - 2 SCFM AERO 2A (*), AERO 2A-1 (*), AERO 2B (*), and AERO 2B-1 (*) This specification has been approved by the Naval Air Systems Command, Department of the Navy. 1
2、. SCOPE 1.1 Scope - This specification covers design and all performance requirements for an electrically-operated, self-contained, air compressor for we in aircraft armament pneumatic systems. 1.2 Classification - Pneumatic compressors shall be of the follow- ing Aero types as specified (see 6.2).
3、Aero 2A (*) - DC driven three-stage Aero 2A-1 (*) - DC driven, four-stage Aero 2B (*) - AC driven, three-stage Aero 2B-1 (*) - AC driven, four stage 2. APPLICABLE DOCUMENTS *2.1 General - The following documents, of the issue in effect on the date of invitation for bids, form a part of this specific
4、ation to the ex- tent specified herein: SPECIFICATIONS Federal QQ-C-320 QQ-N-290 Chromium Plating (Electrodeposited) Nickel Plating (Electrodeposited) QQ-P-416 Plating Cadmium (Electrodeposited) QQ-2-325 Zinc Plating (Electrodeposited) 1 FSC 4310 Design? Installation and Tests in Aircraft Chemical S
5、ilms or Aluminum and Alluminum Alloys Lubricating Oil, Aircraft Instruments, Low Volatility Interference Control Requirements, Aircraft Equipment Pipe Threads, Taper, Aeronautical National Form, Symbol ANPT, General Requirements for Screw Threads,Controied Radius Root With Increased Minor Dia Specif
6、ication for Meter, Time Totalizing, 380 to 420 cycle, General Specifica- tion for Motors, Alternating Current, 400 Cycle, 115/200 Volt System, Aircraft, Class A and Class B, General Specification for Motors, Direct Current, 28 Volt System, Aircraft, General Specification for Anodic Coatings for Alum
7、inum and Aluminum Alloys Nomenclature and Nameplate for Aeronautical, Electronic and Associated Equipment Plating: Tin-Cadmium(Elcctroddeposited) Identification Specifications Selection of Marking of U. S. Military Property and Standards: Order of Precedence 2 for the Provided by IHSNot for ResaleNo
8、 reproduction or networking permitted without license from IHS-,-,-MIL-C-7L35F 43 9777906 0273029 2 - MIL-C-7135F (AS) ML-sTD- MIL-STD-704 Electric Power, Aircraft, Characteristics-and Utilization of Parts and Equipment, .grocedure for Packing ana packing of MIL-STD-756 Reliability of Weapons System
9、s, Procedure for Prediction; and Reporting Prediction of MIL-STD-781 Reliability Tests, Exponential Distribution MS3102 Connector, Receptacle, Electric, Box Mounting MS25245 . Connections - Input Power Airborne Electronic Equipment; 28 - Volt DC, 115-Volt Single Phase AC, or 115/200-Volt Three Phase
10、 AC, or combinations MS33586 Metals, Definition of Dissimilar MS 3365 7 Fitting End, Standard Dimensions for Bulkhead Flared Tube Connection MS 33656 Fitting End, Standard Dimensions for Flared Tube Connection and Gasket Seal 2.2 Availability of Documents *2.2.1 When requesting any of the applicable
11、 documents, refer to both title and number. may be obtained upon application to the Commanding Ofricer, Naval Supply Depot, Code CDS, Copies of this specification and applicable documents 5801 Tabor Avenue, Philadelphia, Pennsylvania 19120. 3. REQUIREMENTS *3.1 Preproduction - The compressor furnish
12、ed under this specifi- cation shall be a product, samples of which have been tested and have passed the preproduction test specified herein. *3.2 Selection of Government Documents - Specifications and stan- dards for necessary commodities and services not specified herein shall be se- lected in acco
13、rdance with MIL-STD-143,cept as provided in 3.2.1 and 3.2.2. 3.2.1 Commercial Parts - Comercial parts having suitable properties shall be used, when, on the date of invitation for bids, there are no suitable standard parts. In any case, comercial parts, such as screws, bolts, nuts, cotter pins, havi
14、ng suitable properties, shall be used provided: a. They can be replaced by the standard parts (MS or AN) without alteration. b. The corresponding standard part numbers are referenced in the parts list and on the contractor 8 drawings. 3.2.2 Standard Parts - With the exception of 3.2.1 MS or AN Stand
15、ard 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-7135F i.13 I 7777706 0273030 7 W I MIL-C-7135F (AS) , parts shall be used where they suit the purpose. the drawings by their part numbers. They shall be identified on 3.3 Materials - Materia
16、ls shall conform to applicable specifica- tions 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 purpose intended. 3.3.1
17、Critical Materials - Non-critical materials shall be used where practicable. Where the use of a critical material is essential to meet specifications requirements, the material used shall be the least critical of those which are adequate for the purpose. 3.3.2 Metals - Metals shall be of the corrosi
18、on resistant type or suitably treated to resist corrosion caused by fuels, salt spray, lubricants, or atmospheric conditions likely to be met in storage or normal service. 3.3.2.1 lytic corrosion, dissimilar metals shall not be used in intimate contact with each other. Dissimilar metals are defined
19、in MS33586. Dissimilar Metals - Unless suitably protected against electro- *3.3.2.2 Magnesium Alloy Parts - Magnesium alloy parts shall be treated When abrasion resistance is a fac- in accordance with Specification MIL-M-3171. tor, an anodic treatment approved by the procuring activity shall be used
20、. “r3.3.2.3 Aluminum Alloy Parts - Where practicable, aluminum alloy parts shall be covered with an anodic film conforming to Specification MIL-A-8625. Small holes, pipe threads and case inserts need not be anodized. which do not anodize satisfactorily shall be coated with a chemical film in ac- cor
21、dance with Specification MIL-C-5541. Aluminum alloys “r3.3.2.4 Iron and Steel Parts - Iron and steel parts which are in her- metically sealed cases shall be cadmium plated in accordance with Specification QQ-P-416. zinc plated in accordance with Specification QQ-C-320 or QQ-N-290 or QQ-2-325 respect
22、ively. shall be tin-cadmium plated An accordance with specification MIL-P-23408. Parts which are not in sealed cases shall be chromium, nickel ar Parts in a confined space in the presence of organic material 3.3.3 Protective Treatment - When materials are used in the con- struction of the equipment
23、that are subject to deterioration when exposed to climate and environmental conditions likely to occur during service sage, they shall be protected against such deterioration in a manner that will in no way prevent compliance with the performance of this specification. Any protective coating that wi
24、ll crack, chip, or scale with age or extremes of climate and environmental conditions shall not be used. “r3.3.4 Fungus - Proof Materials - Materials which are nutrients or fungi shall not be used where it is practicable to avoid them. Where used, they 4 Provided by IHSNot for ResaleNo reproduction
25、or networking permitted without license from IHS-,-,- .- .- - MIL-C-7L35F i.13 7777706 OZ7103L O MIL-C-7135F (AS) shall be treated with a fungicidal agent acceptable to the procuring activity, *3.3.5 Fumes and Vapors - Materials used in the construction of the compressor shall not produce corrosive,
26、 deleterious under the conditions specified herein. or toxic fumesror vapors *3.4 Design and Construction - In the design and construction of this equipment, fulfillment of performance objectives shall be the prime con- sideration. All components within the scope of their specific application as a p
27、art of the equipment shall conform to Specification MIL-P-5518 except as otherwise specified herein. *3.4.1 Provisions for Maintenance and Field Testing- The equipment shall provide for ease of maintenance to the greatest extent practicable. visions for field testing shall be as specified in Specifi
28、cation MIL-E-5400. Pro- 3.4.2 Screw Threads - Screw threads 0.060 inch in diameter or larger shall be in accordance with MIL-S- 8879. *3.483 Time Meter- Provisions shall be made for a time totalizing meter in accordance with Specification MIL-M-7793 to record the total operating time of the equipmen
29、t, aread-out shall exceed the minimum total operating life specified herein for the e fpment. The meter shall be of the digital type and the maximum 3.484 Electrical Requirements 3.4.4.1 Primary Input Power Requirements - The equipment shall meet all applicable requirements of MIL-STD-704 and shall
30、g2qe specified performance from the following power sources with characteristics as defined in MIL-STD-704 having limits as specified therein. specified amounts. The power required shall not exceed the (1) Aero 2A (*) and Aero 2A-1 (*) DC Power 28V, Category “B“, 70 Amps (2) Aero 2B (*) and Aero 2B-
31、1 (*) DC Power 28V, Category “B“, 3 Amps AC Power (Three Phase) 115/200V, Category “B“, 3640 VA 3.4.4.2 in accordance with Drawing MS25245. Input Power Connection - Input power connection shall be designed 3.4.4.3 Protection - 3.4.4.3.1 Voltage Protection - The equipment shall not be damaged by volt
32、ages either above or below the voltages specified herein and shall resume , normal operation automatically when voltage returns within designed limits. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-7135F 43 777q706 0273032 2 MIL-C-7135F (AS)
33、I I 3.4.4.3.2 Overload Protection - All parts and circuits of the equip- ment which are likely to carry an overload due to failures and maladjustments shall be protected with suitable resetable protective devices. 3.4.4.4 Interconnection Cablinq - The equipment shall be capable of satisfactory opera
34、tion using external wiring in accordance with the applicable requirements of Specification MIL-W-5088. shielded, except that a minimum number of the individual wires may be shielded when demonstrated as necessary to meet electromagnetic interference control re- quirements and provided that the assem
35、bly of the cable and its connectors may The external wiring shall be un- be accomplished easily. I 3.4.4.5 Cables and Connectors - The equipment shall provide for the use of cables and connectors in accordance with Specification MIL-E-5400. ever, the cables shall not be supplied as part of the equip
36、ment. How- I I i i cables and those portions of the connections that are to be attached to trical components shall be coded in accordance with specification MIL-W-5088. Wiring between elec- I I *3.4.5 Oil Tank - A tank shall be provided to furnish lubricating oil to the equipment. tank.shal1 be remo
37、vable without dismounting the compressor from its installed position. of the oil level. state the maximum acceptable oil consumption. The capacity of the tank shall be sufficient to furnish lubricating oil for at least 30 hours of equipment operating time. The oil i I A sight gauge or other means sh
38、all be provided for visual indication The manufacturer as part of its maintenance procedures shall *3.4.6 Lubrication - The equipment shall be lubricated with oil con- forming to Specification MIL-L-6085. * 3.4.7 Moisture Separator - A moisture separator shall be provided to remove at least 96% of t
39、he moisture and oil vapors from the discharge air. The separator shall be equipped with a heater which shall have been energized when the ambient temperature reaches OOC. and the de-energized position shall not be less than 8.3OC and not more than 20OC. The spread between the energized 3.4.7.1 Conde
40、nsate Dump Valve - A condensate dump valve shall be provided to dump the accumulated moisture collected in the moisture separator. The valve shall be integral with the moisture separator or closely adjacent to minimize the possibility of freezing during low temperature operation. valve shall be acti
41、vated as necessary to preclude discharge of accumulated moisture and oil into the pneumatic system. The r3.4.8 Pressure Relief Valve - A pressure relief valve shall be pro- The pressure relief valve vided which shall by-pass full air flow of the compressor to the atmosphere when a maximum gage press
42、ure of 3750 PSI is reached. shall reset at a minimum pressure of 3200 PSI gage. 6 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-C-7335F 43 M 7779906 0273033 Li M MIL-C-7135F (AS) *3.4.9 Pressure Control Switch - A pressure control switch sh
43、all be provided which shall cut out the compressor when the outlet pressure reaches 3100 +i00 PSI gage and cut in the compressor when the outlet pressure drops to 2700 5100 PSI gage. *3.4 . 10 separator, the compressor shall be equipped with a back pressure valve with an operating pressure of 2550 2
44、150 PSI full flow pressure. Back Pressure Valve - For efficient operation of the moisture 3.4.11 Detail Requirements 3.4.11.1 Aero 2A(*) and Aero 2A-1(*) 3.4.11.1.1 Form Factor - The envelope dimensions of the equipment shall not exceed those shown in Figure 1. 3.4.11.1.2 Weight - The dry weight of
45、the equipment, excluding external wiring, shall not exceed 40 pounds. 3.4.11.1.3 Mounting - The mounting dimensions of the equipment shall be in accordance with Figure 1. *3.4.11.1.4 Electrical Connection - Connections to external circuits shall be provided by an MS3102R-20-24P connector (3101) loca
46、ted as shown in Figure 1 and connected as follows: Pin Desimation Function A B C D Control 28VDC Spare Ground *3.4.11.1.5 Pneunatic Connections - The equipment shall have MS33656 and Connections shall withstand MS33657 connections located as shown in Figure 1. tubing installation torque without move
47、ment or leakage. 3.4.11.1.5.1 1/4 inch tubing. Air Outlet - The air outlet pneumatic connection shall be for 3.4.11.1.5.2 Condensate Outlet - The condensate outlet pneumatic connection shall be for 1/8 inch tubing. 3.4.11.1.6 Motor - The equipment shall be powered by a continuous duty electric motor
48、 utilizing 28V DC and conforming to Specification MIL-M-8609. motor shall be deemed adequate if it operates in an acceptable and satisfactory manner during testing of the complete equipment. The 3.4.11 . 2 Aero 2B(*) and Aero 2B-1(*) 7 Provided by IHSNot for ResaleNo reproduction or networking permi
49、tted without license from IHS-,-,- - MIL-C-7135F 43 9779906 0271034 6 m MIL-C-7135F (AS) 3.4.11.2.1 Form Factor - The envelope dimensions of the equipment shall not exceed those shown in Figure 2. 3.4.11.2.2 Weight - The dry weight of the equipment, excluding external wiring, shall not exceed 33 pounds. 3.4.11.2.3 Mounting - The mounting dimensions and air intake of the equipment shall be in accordance with Figure 2. *3.4.11.2.4 Electrical Connection -
