1、3 MIL-STD-157b SA W 797991L 0063635 O d MIL-mSTD-1576 (USAF) 31 JULY t984 MLITARY STANDARD ELECTROEXPLOSIVE SUBSYSTEM SAFETY REQUIREMENTS AND TEST METHODS FOR SPACE SYSTEMS NO DELIVERABLE DATA REQUIRED BY THIS DOCUMENT Provided by IHSNot for ResaleNo reproduction or networking permitted without lice
2、nse from IHS-,-,-MIL-STD-LS76 SA W 74777LL 00b3b3b 2 W MIL-STD- 15 7 6 ( USAF 31 July 1984 DEPARTMENT OF THE AIR FORCE Washington, D C 20330 Electroexplosive Subsystems Safety Requirements and Test Methods for Space Sys teas MIL-STD-1576 (USAF). 1. This Military Standard is approved for use by the D
3、epartment 0.f the Air Force, and is available for use by all Departments and Agencies of the Department of Defense. 2. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addreased to: Hq SD/ALM, Box 92960, Los A
4、ngeles, CA 90009 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1576 (USAI?) 31 July 1984 FOREWORD T
5、his St.anqard establishes the general requirements and test methods for the design and development of electroexplosive subsystems to preclude hazards from unintentional initiation and from failure to fire. These requirements apply to all subsystems utilizing electrically initiated explosive or pyrot
6、echnic components. This Standard applies to all space vehicle systems (e.g., launch vehicles, upper stages, boosters, payloads, and related systems). iii Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1576 (USAI?). 31 July 1984 THIS PAGE LEF
7、T BLANK INTENTIONALLY Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1576 SA 7977911 00b3637 B -i Paragraph _- . 1.0 1.1 1.2 1*2.1 1.3 . 1.4 2.0 2.1 2.2 3.0 3.1.1 3.1.2 3.1.3 3.1.5 3.1 . 3.i.4 3.1.8 3.1.9 3.1.-10 3.1.11 I 3.1.12 3.1.13 3.1.1
8、4 . 3.1.-15 3.1.16 3.1.17 3 1 . 19 3.1.20 3.1.21 3.1.18 3.1022 3.1.23 3.1.24 3.1.25 3.1.26 3.1.27 3.1.2a 3.1.29 3.1.30 3.1.31 3.1.32 3.1.33 3.1.34 MIL-STD-1576 (USAF) 31 July 1984 CONTENTS Page SCQPE . . 1 Purpose . - . 1 TestMethods . -1 Revision of Test Methods . 1 Application . 1 . Minimum Requir
9、ements 2 REFERENCED DOCUMENTS o v o 0% . . 3 IssueS.of Documents 3 . Other Publications 4 DEFINITIONS 7 Termsused 7 Arm/Disarm (A/D) Device . 7 Bridgewire 7 Catastrophic Hazard 7 Conductive Mix 7 Conductive Mix EED 7 Critical Hazard 7 Dudding 7 Electroexplosive Device (EED) - 7 Electroexplosive Subs
10、ystem (EES) . 8 Exploding Bridgewire (EBW) Device . 9 . 8 Exploding Foil Device a Explosiv Train (Explosive Transfer Assembly) D 8 Firing Circuits . 8 . Firing Control Circuit . . . . . 8 Firing Output Circuit 8 Firing Source a Firing Source Circuit 8 Host.Vehcle. 8 Isolation Filter/Isolation Filter
11、 Connection Radio Frequency (RF) . . 10 Maximum No-Fire Level .- . 10 Monitor Circuit . 10 NASA Standard Initiator (NSI) . . . . 10 Non-Standard Parts. Materials. and Processes . . v 10 Optical Coverage 10 Payload 10 Production Lot 10 RotorLead 10 Safety Critical Function . i 10 Safe and Arm (SM) De
12、vice . 11 SafePlug 11 Safe/ArmPlug 11 AmPlUg 0.0 b 0.0 7 Electromagnetic Environment . .- .I . a Minimum All-Fire Level Safe and Arm devices, Arm/Disarm switches, relays and all electrical . wiring used to monitor, control, arm and fire ordnance are specifically included. This Standard applies to al
13、l space vehicle systems (e.g., launch vehicles, upper stages, boosters, payloads, and related systems using EEDs). 1.2 TestMethods. The test methods described herein have been prepared to: a. Specify laboratory test conditions for electroexplosive subsystems and components which will produce test re
14、sults that are equivalent to those which would beexperienced in the actual operational environ-. ment and which will permit reproducibility of test results. e b. Describe all test methods for electroexplosive subsystems and comppnents needed to ensure compliance with the requirements of the speclf i
15、cation. . c. Provide Test Method 2208 as a Standard method far RF dudding evaluation if required by the procuring activity. 1.2.1 Revision of Test Methods. Revisions of each test method shall be indicated by a revision number following the method numbr. For example., the first revision of Test Metho
16、d 1101 would be 1101.1, the second revision would be 1101.2, et cetera. 1.3 Application. This Standard is applicable to the entire electroexploaive subsystem life cycle, up. to the time when the electroexplosive subsystem no longer presents a hazard to personnel, launch site facilities and manned or
17、 reusable space systems, This Standard a-lso applies to expendable launch vehicles which present these types of hazards. a. This. Standard is intended to be used by procuring activities for . establishing all of the electroexplosive subsystem safety requirements to be included in specifications fort
18、he design and development of new hardware for new or old space systems. b. This Standard is intended to be uaed by procuring activities and government safety organization for a safety evaluation of previously -1- Provided by IHSNot for ResaleNo reproduction or networking permitted without license fr
19、om IHS-,-,-MIL-STD-1576 SA m 9499931 OOd3bLc Methods of Testing (5.2) Colors (5.12.6) Test Methods.for Electronic and Electrical Component Parts (Method 1111) Nondes truc tive Testing Personnel . Qualification and Certification (Eddy . Current, Liquid Penetrant, Magnetic Particle, Radiographic and U
20、ltrasonic) (Method 1404) . . Inspection, Radiographic (Method 1103) Ammunition Data Card (4.6) . Lot Numbering of Ammunition (4.6) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-L576 SA 99949LL 0063650 7 MIL-STD-1512 MIL-STD-1546 MIL-STD-154
21、7 MIL-STD-1576 (USAF) 31 July 1984 Electroexplosive Subsystems, Electrically Initiated, Design Requirements and Test Methods (l.3.d, Appendix 50.2.1, 50.2.1.3) Parts, Materials, and Processes Standardization, Control and Management Program for Spacecraft and Launch Vehicles (3.1.38, 4.5.1, 4.5.3, 4.
22、5.4, 6.9.1, 6.9.2) Technical Requirements for Parts, Materials, and Processes for Spacecraft and Launch Vehicles (6.8.3) PUBLICATIONS DOD DOD 5154 a 4s Ammunition and Explosive Safety Standards (6.5) ADL-TD-3 DOD Authorized Data List (6.11) APTO 11A-1-47 Explosive Hazard Classification Procedures (6
23、.5) (Copies of specifications , standards, drawings, and publications required by contractors in connection with specific procurement functions should be obtained from the contracting activity or as directed by the contracting of f icer) 2.2 Other Publications. The following documents form a part of
24、 this standard to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM E-545 Determining Image Quality in Thermal Neutron Radiographic Testing (Method 14
25、04) SNT-TC-1 Personnel Qualification and Certification in Nondestructive Testing (Method 1404) (Application for copies of ASTM publications should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, Pennsylvania 19103). M-C2210-1 Monograph on Computation o
26、f RF Hazards, Monograph M-C2210-1, Franklin Research Center (Method 4303, Appendix 20. (Application for copies of this publication should be addressed to the Franklin Research Center, 20th Street and Race, Philadelphia, Pennsylvania 19103) Provided by IHSNot for ResaleNo reproduction or networking p
27、ermitted without license from IHS-,-,-MIL-STD-1576 (USAF) 31 July 1984 W. J. Dixon and F. J. Massey, “Introduction to Statistical Analysis,“ McGraw-Hill, N.Y. N.Y., 1957. (Method 2203) (Reference Only) AMP lOl-lR, SRC-P “Statistical Anaiysie for a New Procedure in No. 40 Sensitivity Experiments,“ Br
28、uceton Laboratory, Princeton New Jersey, July 1946 -(Method 2203) (Reference Only) W.J. Dxon and A. M. Mood, “A Method for Obtaining and Analyzing Sensitivity Data,“ Journal of American Statistical Associations March, 1948. (Method 2203) (Reference Only) Technical society and technical association s
29、pecifications and standards are.generally available for reference from libraries. They are also . distributed among technical groups and using Federal agencies. . e -5- L Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1576 (USAF) 31 July 198
30、4 THIS PAGE LEFT BLANK INTENTIONALLY Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1576 (USAF) 31 July 1984 3 . O - DEFINITIONS 3.1 Terms used. The foilowing are definitions of terms as used in this Standard: 3.1.1 Arm/Disarm (A/D) Device.
31、An Arm and Disarm Device is an electrically Qr mechanically actuated switch which can make or break one or more.electro- explosive firing circuits. A/D devices do not physically interrupt the expiosive train. 3.11.2 Arm Plug. A plug t.hat makes the firing circuit continuous when inserted in a connec
32、tor. 3.1.3 Bridgewire. A bridgewire is defined as a resistance element within the electroexplosive device which is the final electrical element at the electrical/explosive interface 3.1.4 Catastrophic Hazard. A catastrophic hazard is a hazard that has the potential for personnel fatality, loss of la
33、unch site facilities, or loss of reusable or manned launch vehicles. This definition also applies to expendable launch vehicles which present these types of hazards. 3.1.5 Conductive Mix. A conductive mix refers to the thermal conductivity of the prime.mix of an EED. Prime mixes with high thermal co
34、nductivity are used levels. See paragraph 3.1.6. d, to conduct heat away f-rom a bridgewire to permit higher no fire current . 3.1.6 Conductive Mix EED. A conductive mi.x EED is one,that does not use-a bridgewire of any type. The firing power flows through the mix itself and heats the mix directly f
35、or firing 3.1.7 Critical Hazard. A critical hazard is a hazard that has the potential for personnel injury., damage to launch site facilities, ordamage to reusable or manned launch vehicles. This definition also applies to expendable launch vehicles which present these types of hazards. 3.1.8 Duddin
36、g. Dudding is the process of permanently degrading an electro- explosive device to a state where it cannot perform i 3.1.12 Exploding Bridgewire (EBW) Device. An exploding bridgewire device is defined as an electroexplosive device in which the bridgewire is designed to be exploded (disintegrated) by
37、 a high energy electrical discharge which in turn causes the explosive charge to react. 3.1.13 Exploding Foil Device. An exploding foil initiator shall be considered to have the same functional characteristics and requirements as the exploding bridgewire device except that the exploding foil acceler
38、ates a disc which strikes and shock-initiates the explosive mix. 3.1.14 Explosive Train (Explosive Transfer Assembly). An.arrangement of a series of explosive or combustible elements used to perform or transfer energy to perform an end function. When an explosive train is used to transfer energy fro
39、m one point to an end unction it may be called an “explosive transfer assembly“. 3.1.15 Firing Circuit. A firing circuit is composed of the firing source circuit, the firing output circuit, the firing control circuit and the monitor circuit. (See Typical Firing Circuit Diagram, Figure 11 3.1.16 Firi
40、ng Control Circuit. A firing control circuit is defined as chat part of the electroexplosive subsystem which actuates the arming and firing devices. (See Typical Firing Circuit Diagram, Figure 1). 3.1.17 Firing Output Circuit. A firing output circuit is defined as that part of the firing circuit bet
41、ween the EED and the switching device which causes the EED to fire. (See Typical Firing Circuit Diagram, Figure 1) . 3.1.18 Firing Source. A firing source is defihed as the junction in the electrical system which provides energy to EED loads exclusively. This source is typically a dedicated ordnance
42、 bus. (See Typical Firing Circuit Diagram, Figure 1). 3.1.19 Firing Source Circuig. A firing source circuit is defined as that part of the firing circuit from the firing source to the firing output circuit. (See Typical Firing Circuit Diagram, Figure 1). 3.1.20 Host Vehicle. Space systems consist of
43、 host vehicles and payloads, in other words, carriers and the items to be carried. For example, the first stage of a launch vehicle is the host vehicle for the second- stage; the second stage of a launch vehicle is the host vehicle for the third stage; etc. Provided by IHSNot for ResaleNo reproducti
44、on or networking permitted without license from IHS-,-,-T MIL-STD-L576 SA W 79797LL D063655 6 W I) MIL-STD-1576 (USAF) 31 July 1984 Figure 1 TYPICAL FIRING CIRCUIT DIAGRAM NOTE : This.is a typical circuit for purposeS.of illustration of the various parts of the electroexplosive subsystem and is not
45、intended as a required design. -9- - - . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-IJ SA m 977991 Ob3b5b B MIL-STD-1576 (USAF) 31 July 1984 3.1.21 Isolation Filter/Isolation Filter Connection, Radio Frequency (RF). a. Isolation Device:
46、Any device which prevents conduction of electro- magnetic energy into a shielded system. Selection of isolators take into consideration the variation in source and load impedances with frequency and physical placement of the isolator in the system. b. Absorbtive Device: A type of isolation device th
47、at precludes propagation of electromagnetic energy through the device. The minimum isolation provided by such a device is independent of the source and load impedance for the device. A conventional filter or other device can be used as an absorbtive isolator provided that the rated minimum isolation
48、 is independent of source and load impedances. 3.1.22 Maximum No-Fire Level. Maximum no-fire level is defined as the maximum DC or RF level at which an electroexplosive device shall not Eire with a probability of .999 at a confidence level bf 95 percent as determined by Test Method 2203 (Bruceton te
49、sting). 3.1.23 Minimum All-Fire Level. Minimum all-fire is defined as the least DC current which causes initiationwith a probability of .999at a confidence level of 95 percent as determined by Test Method 2203 (Bruceton-testing). 3.1.24 Monitor Circuit. A monitor circuit is defined as that part of the electroexplosive subsy
