1、The Engineering Society For Advancing Mobility Land Sea Air and Space I N T E R N A T I O N A L400 Commonwealth Drive, Warrendale, PA 15096-0001AEROSPACESTANDARDCopyright 1992 Society of Automotive Engineers, Inc.All rights reserved.Printed in U.S.ASAE Technical Standards Board Rules provide that: “
2、This report is published by SAE to advance the state of technical andengineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use ,including any patent infringement arising therefrom, is the sole responsibility of the user.”SAE revi
3、ews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invit esyour written comments and suggestions.Submitted for recognition as an American National StandardAS1607Issued 12-15-81Revised 1992-05-08VALVE, STARTER CONTROL, PNEUMATIC, AIRCRAF
4、T ENGINE GENERAL SPECIFICATION FOR1.SCOPE:1.1Scope:This specification covers the general requirements for pneumatic control valves for use with the starters on aircraft gas turbine engines.This specification shall be used in conjunction with AS943, ARP949, and AIR1639.1.2Classification:Pneumatic sta
5、rter control valves shall be one of the following two types:a.Type I: Regulating (pressure)b.Type II: Nonregulating (on-off)The type will be assigned by the procuring activity in accordance with MIL-STD-875 and shall bespecified in the model specification.2.REFERENCES:The following documents, of the
6、 issue in effect on date of invitation for bids or request for proposals, form a part of this specification to the extent specified herein:2.1SAE Publications:Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.AS943 Starter, Pneumatic, Aircraft Engine, General SpecificationARP949
7、Turbine Engine Starting System Design RequirementsAIR1639 Safety Criteria for Pneumatic Starting SystemsREV.ACopyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-SAE AS1607 Revision A- 2 -2.2U.S. Government
8、 Publications:Available from Standardization Documents Order Desk, Building 4D, 700Robbins Avenue, Philadelphia, PA 19111-5094.MIL-P-116 Preservation-Packaging, Method ofMIL-B-5087 Bonding, Electrical, and Lightening Protection for Aerospace SystemsMIL-E-7080 Electric Equipment, Aircraft, Selection
9、and Installation ofMIL-P-7105 Pipe Threads, Taper, Aeronautical National Form, Symbol ANPT, GeneralRequirements forMIL-S-7742 Screw Threads, Standard, Optimum Selected Series; General Specification forMIL-I-8500 Interchangeability and Replaceability of Component Parts for Aircraft and MissilesMIL-S-
10、8516 Sealing Compound, Polysulfide Rubber, Electric Connectors and Electrical Systems,Chemically CuredMIL-A-8625 Anodic Coatings, for Aluminum and Aluminum AlloysMIL-S-8879 Screw Threads, Controlled Radius Root with Increased Minor Diameter, GeneralSpecification forMIL-S-23586 Sealing Compound, Elec
11、trical, Silicone Rubber, Accelerator RequiredMIL-I-81550 Insulating Compound, Electrical, Embedding, Reversion Resistant SiliconeMIL-STD-129 Marking for Shipment and StorageMIL-STD-130 Identification Marking of US Military PropertyMIL-STD-453 Inspection, RadiographicMIL-STD-454 Standard General Requ
12、irements for Electronic EquipmentMIL-STD-461 Electromagnetic Emission and Susceptibility Requirements for the Control ofElectromagnetic InterferenceMIL-STD-462 EMI Characteristics, Measurement ofMIL-STD-470 Maintainability Program Requirements (For Systems and Equipment)MIL-STD-480 Configuration Con
13、trol - Engineering Changes, Deviations and WaiversMIL-STD-490 Specification PracticesMIL-STD-704 Aircraft Electric Power RequirementsMIL-STD-794 Parts and Equipment, Procedures for Packaging and Packing ofMIL-STD-810 Environmental Test Methods and Engineering GuidelinesMIL-STD-831 Test Reports, Prep
14、aration ofMIL-STD-875 Type Designation System for Aeronautical and Aeronautical Support EquipmentMIL-STD-889 Dissimilar MetalsMIL-STD-970 Standards and Specifications, Order of Precedence for the Selection ofMIL-STD-1523 Age Control of Age Sensitive Elastomeric Material (for Aerospace Applications)M
15、IL-STD-1595 Qualification of Aircraft Missile and Aerospace Fusion and WeldersMIL-STD-1949 Inspection Process, Magnetic ParticleCopyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-SAE AS1607 Revision A- 3
16、2.2(Continued):MIL-C-2175 Castings, Classification and Inspection of (For Aeronautical Applications)MIL-STD-6866 Inspection Liquid PenetrantMIL-STD-8706 General Specification for Design Examinations, Engineering, Aircraft Weapon SystemsDOD-STD-100 Engineering Drawing PracticesMS 20995 Wire, Safety
17、or LockMS 33540 Safety Wiring, and Cotter Pinning, General Practices forMS 33588 Nut, Self-Locking, Aircraft, Reliability and Maintainability Usage RequirementsFORM 1423 CDRLREPORT #217 FAA Technical Report2.3Definitions:The applicable definitions and symbols used herein and in the model specificati
18、on are as specified below:2.3.1PROCURING ACTIVITY:The procuring activity is responsible for the valve contract.2.3.2PROOF PRESSURE:Proof pressure is that internal pressure to which all high pressure valve partsare pressure tested to prove their structural integrity without causing damage.2.3.3MINIMU
19、M BURST PRESSURE:Minimum burst pressure is the greatest applied internal pressure towhich the valve can be subjected before ultimate strength of the valve is exceeded.2.3.4TRANSFER TIME:Transfer time is the time interval from the removal of the valve or component fromone conditioning chamber to the
20、insertion of the valve or component into another conditioning chamber, or the time interval from the removal of the valve or component from the conditioning chamber to theinitiation of testing.2.3.5RATING:A rating is the value of some characteristic of performance as specified in the modelspecificat
21、ion. The valve shall be rated at that condition at which its associated starter is rated unless otherwise specified by the procuring activity. This is typically APU standard day sea level operatingconditions.2.3.6MODEL SPECIFICATION:The model specification referred to herein is defined as the valve
22、supplierprepared document used to define a particular valve.2.3.7DETAIL SPECIFICATION:The detail specification referred to herein is defined as a procuring activityprepared document used to define the applicable design and performance parameters required for a particular valve application.Copyright
23、SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-SAE AS1607 Revision A- 4 -2.4Symbols:The units for these symbols are defined herein:a.G: Gravitational constantb.T: Temperaturec.Wv: Total weight of the valved.P:
24、Pressure3.REQUIREMENTS:3.1Preproduction:This specification makes provisions for preproduction testing.3.2Model Specification and Data Submittal:When specified in the procurement contract, a valve model specification conforming to the outline and instructions for preparation specified herein, shall b
25、e prepared by the valve supplier and submitted bycontractor to the procuring activity for approval (see 2.3.6 and 6.2). The model specification shall provide all the necessary information to completely describe the starter control valve for one system application.Approval of the model specification
26、is required prior to initiation of preproduction and quality conformance testing. Changes and revisions to the model specification shall be in accordance with MIL-STD-490.a. The headings and numbering of sections and paragraphs in the model specification shall correspond to those in this specificati
27、on. Specific data required by this specification and such other additional dataas may be required to completely describe the unit shall be included in the model specification.Omission of reference in the model specification to a particular requirement of this specification by themanufacturer shall b
28、e interpreted as compliance therewith. When departures from the requirementsof this specification are necessary, the details of such departures shall be stated as specificrequirements bearing the same section, paragraph heading, and numbering as in this specification.b. All applicable documents shal
29、l be listed in numerical order in Section 2 of the model specification.c. All curves shall be presented on graph paper having an adequate number of subdivisions to permiteasy interpolation.d. Definitions and Symbols - Terms, their definitions, and symbols used in the model specification shallbe in a
30、ccordance with Section 2 herein.3.2.1Detail Specification: Requirements for individual items shall be as specified herein and shall be inaccordance with the applicable detail specification (see 2.3.7) for the system.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo r
31、eproduction or networking permitted without license from IHS-,-SAE AS1607 Revision A- 5 -3.2.2Valve Data Submittal and Approval: Valve data submittal and approval requirements for a specificmodel aircraft will be covered by a contract with the appropriate procuring activity. Typical information and
32、data required are listed in 6.2. The data shall be furnished in accordance with MIL-STD-8706 or in accordance with the appropriate line items of the Contractor Data Requirement list (DD Form 1423), as applicable.3.3Mockup:A full-scale mockup shall be prepared for examination and aircraft installatio
33、n suitability as soon as the contractor has established the necessary design features of the valve. Prior to initiation of thepreproduction testing, the mockup shall be installed on the aircraft for which the design was finalized to demonstrate satisfactory fit and installation features. Examination
34、 shall be at the option of the procuringactivity.3.3.1Changes:Changes to the valve features requiring changes in the vehicle or ground supportequipment made after approval of the mockup shall be submitted to the procuring activity for approval in accordance with MIL-STD-480. Any changes required by
35、the procuring activity shall be subject tonegotiation as provided in the contract. Unless otherwise authorized, the mockup shall be kept current with approved changes at least through the first production contract.3.4Components:Normally, the complete valve shall consist of a valve body assembly whic
36、h includes a mechanism (such as butterfly) for controlling airflow through the valve, a pressure regulating or on-off actuating power device, and a solenoid-operated pilot valve for control of the actuator.3.5Selection of Specifications and Standards:Specifications and standards for necessary items
37、and services not specified herein shall be selected according to MIL-STD-970.3.6Materials:3.6.1Metals:Metal parts shall be of the corrosion-resistant type or suitably treated to resist corrosion due tocombustion gases or residue, or atmospheric conditions likely to be met in storage or service use.
38、Anycorrosion resistant protective coating applied shall provide maximum protection against cracking,chipping, or scaling of the coating with age, use, or extremes of atmospheric conditions.3.6.1.1Dissimilar Metals: Unless protected against electrolytic corrosion, dissimilar metals shall not be usedi
39、n contact with each other. Dissimilar metals are defined in MIL-STD-889.3.6.2Nonexpendable Metal Parts:Nonexpendable metal parts may be reworked and reused as agreedbetween the procuring activity and the contractor, if such parts comply with specifications and drawings in all respects.Copyright SAE
40、International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-SAE AS1607 Revision A- 6 -3.6.3Synthetic Rubber Parts:Age of synthetic rubber parts shall be controlled in accordance withMIL-STD-1523.3.6.4Castings:Castings shall be
41、in accordance with MIL-C-2175.3.6.5Potting Compounds:Requirement 47 of MIL-STD-454 shall be adhered to for encapsulation andembedment. Only those materials that meet the requirements of MIL-S-8516, MIL-S-23586, orMIL-I-81550 shall be used.3.6.6Organic Materials:Materials that are nutrients for fungi
42、 shall not be used where it is practical to avoidthem. Where used, they shall be treated with a suitable fungicidal agent.3.7Design and Construction:The valve shall be designed for operational use with a specific pneumatic energy source, and shall be compatible with the starter in a specific applica
43、tion (see AS943). The design shall be amendable toproduction processing methods. The valve shall be constructed to withstand the strains, jars, vibrations, and other conditions incident to shipping, storage, installation, and service usage. The pneumatic energy sources shall be defined in the detail
44、 specification and model specification.3.7.1Special Features:3.7.1.1Failsafe Features:The valve shall be designed to automatically close in the event of loss ofelectrical power or pneumatic energy source.3.7.1.2Other Features:Manual override, remote position indication, and other such features shall
45、 bespecified in the detail specification.3.7.1.3Installation:The valve shall incorporate features to preclude installing the valve in the oppositeairflow direction from that intended.3.7.2Reliability and Maintainability:3.7.2.1Reliability:The valve manufacturer shall prepare, as part of the model sp
46、ecification, a reliabilityanalysis predicting the confidence level and reliability factor based on a one-cycle mission.MIL-STD-470 should be used as a guide. Demonstration of the predicted reliability factors shall bespecified in the contract with the procuring activity. Factors to be considered dur
47、ing the design and manufacture of the valve to assure in-service reliability are:a. Simplicity of designb. Selection and application of reliable componentsc. Consideration of operational and environmental parametersd. Mechanical structures - adequate design stress margin on all partse. Design review
48、 by technical specialists prior to drawing releasef. Use of proven manufacturing techniquesg. Rigid quality control procedures imposed throughout procurement, manufacturing, assembly, andtesting to assure the maximum design reliability is built into the equipmentCopyright SAE International Provided
49、by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-SAE AS1607 Revision A- 7 -3.7.2.2Maintainability:The valve design shall permit easy assembly, disassembly, location of troublesources, routine service checking, adjustment, and maintenance with tools and equipment normally available commercially, by service maintenance personnel with a minimum of training. Maintenance between overhaul periods shall be held to an absolute m
