1、MIL-DTL-32027 U %Ob 207b238 975 I INCH-POUND I MJL-DTL-32027(OS) 22 October 1998 DETAIL SPECIFICATION GENERATOR, GAS, DRY BAY FIRE EXTINGUISHER, GGU-lSNA This spec8cation is approved for use by the Naval Sea Systems Cod, Department of the Navy, and is available for use by all Department and Agencies
2、 of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for the manufacture and acceptance of the Dry Bay Fire Extinguisher Gas Generator, WU-lSA/A, referred to herein as “gas generator“. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section
3、are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautio
4、ned that they must meet all specified requirements documents specified in sections 3 and 4 of this specification, whether or not those documents are listed in this section. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbook
5、s form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplements thereto, cited in the solicitation (see 6.2). SPECIFICATI
6、ONS DEPARTMENT OF DEFENSE MIL-D-21625 Design and Evaluation of Cartridges for Cartridge Actuated Devices MIL-1-23659 Initiators, Electrical, General Design Specification for Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this docum
7、ent should be addressed to: Commander, Indian Head Division, Naval Surface Warfare Center, Standardization Team (Code 840M), 101 Strauss Avenue, Indian Head, MD 20640-5035, by using the self addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document
8、or by letter. AMSC NIA FSC 1377 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32027 99e199Ob 2076237 BOL MIL-DTL-32027( OS) STANDARDS DEPARTMENT OF DEFENSE MI
9、L-STD-202 MIL-STD-1168 Ammunition Lot Numbering Test Methods for Electronic and Electrical Component Parts (Unless otherwise indicated, copies of Federal and Military specifications and standards are available from: standardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA
10、 191 1 1- 5094) 2.23 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation (see 6.2). DRAWING
11、S NAVAL AIR SYSTEMS COMMAND (CAGE Code 30003) 838AS243 Generator, Gas, Dry Bay Fire Extinguisher, GGU-15NA 838AS254 Cover, Electrical Connector, Gas Generator Assembly (for Helium Leak Test) 3205AS191 Test Fixture Assembly (100 f 0.5 Liter) 3205AS 199 Container, Shipping and Storage, Gas Generator 3
12、205AS216 VibratiodShock Plate and Gas Generator Assembly (Application for copies should be addressed to the Commanding Officer, Naval Inventory Control Point, 5801 Tabor Avenue, Philadelphia, PA 19120-5099.) 2.3 Non-Government publications and drawings. The following documents form a part of this do
13、cument to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited i
14、n the solicitation (see 6.2). DRAWINGS MCDONNELL DOUGLAS (CAGE Code 76301) 74J580155-103 Dry Bay Extinguisher 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32027 999990b 207bZr10 523 1 MIL-DTL-32027( OS) PRIMEX AEROSPACE COMPANY (CAGE Cod
15、e 21562) 0750-2 Pyrotechnic Tape 32721-501 Ignition Pellet 32735-501 Propellant Pellets 33300-301 GGU- 15NA Gas Generator Assembly SPECIAL DEVICES, INCORPORATED (CAGE Code 14720) 103377-35 1 Pressure Cartridge, Dual Bridgewire Assembly PUBLICATIONS SPECIAL DEVICES, INCORPORATED (CAGE Code 14720) ATP
16、- 103377-35 1 (Revision A 21 November 1997) Acceptance Test Procedure for Pressure Cartridge, Dual Bridgewire Assembly P/N 103377-35 1 AMERICAN SOCIETY FORTESTING AND MATERIALS (ASTM) ASTM B 117 Standard Practice for Operating Salt Spray (Fog) Apparatus ASTM D 1141 Standard Specification for Substit
17、ute Ocean Water ASTM E 1742 Standard Practice for Radiographic Examination (Application for copies of ASTMs should be sent to the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959) 2.4 Order of precedence. In the event of a conflict between the text
18、of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), a sample shall be su
19、bjected to the first article inspection in accordance with 4.2.1. A first article inspection shall be required when one or more of the following applies: (a) three years or more has passed since the gas generator or a similar item was manufactured; (b) there has been a major turn over in personnel;
20、(c) there have been major changes to the production facility; or (d) there has been a transfer of production to a new facility or site. 3.2 Flight critical part. The gas generator is a flight critical item and the technical data package shall be identified and procured as such (see 6.4.2). 3 I Provi
21、ded by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32027( OS) Model No. NAVAIR P/N Primex P/N GGU- 15NA 838AS243 33300-301 33 Design and construction. The following applies to the qualification status and configuration control of the gas generator ov
22、er the entire life of the item. McDonnell Douglas P/N 745580155-103 3.3.2 Configuration control. Only the gas generator procured from the vendor listed on drawing 838AS243 is approved for the application specified. A substitute gas generator shall not be used or procured without prior testing and ap
23、proval by the Indian Head Division , Naval Surface Warfare Center (MDIVMSWC), Indian Head, MD 20640-5035 and the Naval Air Systems Command Headquarters (AIR-4.3.5 and PMA-265). 3.4 himary components. Ignition pellets (p/N 32721-501), propellant pellets (P/N 32735-501), and the electrical pressure ca
24、rtridge (PAU 103377-35 1) are the gas generator primary components (see 6.4.1). Only one lot of each primary component shall be used in a gas generator lot. One primary lot may be used in more than one gas generator lot. Only primary components manufactured within the last 24 months shall be used in
25、 gas generator lots. 3.4.1 Electrical pressure cartridge. The zirconium potassium perchlorate ignition charge and the titanium hydriddpotassium perchlorate main charge are the electrical pressure cartridge, P/N 103377- 351, primary components. Only one lot of each primary component shali be used in
26、an electrical pressure cartridge lot. One primary lot may be used in more than one electrical pressure cartridge lot. 3.4.1.1 P/N 103377-351 compliance. As a minimum, the PM 103377-35 1 electrical pressure cartridge lot for each gas generator lot shall demonstrate compliance to the inspection and te
27、st requirements of accordance with ATP-103377-351, Revision A, dated 21 Nov 1997. Any changes to this document are subject to approval by the Indian Head Division, Naval Surface Warfare Center (MDIv/NSWC), Indian Head, MD 20640-5035. in addition, the electrical pressure cartridges shall be capable o
28、f compliance with the requirements of MIL-1-23659. 3.5 Gas generator production. The gas generators shall be manufactured in accordance with drawing 838AS243. As a minimum, each production gas generator shall demonstrate compliance to the requirements of 3.4 and those outlined in Table I. Failure of
29、 any gas generator to meet the requirements of 3.4 and Table I shall result in rejection of that gas generator. 3.5.1 Visual inspection. The gas generators shall be free of the following defects: illegible, missing or inaccurate markings, burrs, dents, deep scratches, cracks, corrosion, sharp edges,
30、 bent or missing electrical contact pins, damaged mounting studs, chipped or incomplete protective finish, or other defects which may prevent the instailation of the gas generator. The electrical pressure cartridge shali havesa shorting plug installed which shorts all pins. Protective caps shall be
31、installed on the mounting studs (see 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-DTL-32027 m 9999906 2076242 3Tb m I MIL-DTL-32027( OS) I 1. Visual inspection 4.3.1 3.4,3.5.1,3.7 2. Radiographic examination 4.3.2 3.5.2 6.4.3). Each gas gen
32、erator shall meet the requirements of 3.4, 3.7 and those listed on drawing 838AS243. TABLE I. Production inmections. Il Test sequence I Testparagraph I Requirementparagraph 11 3. Leakage I 4.3.3 I 3.5.3 I 4.3.4 4. B rideewi re res istanc e I 3.5 .4 3.53 Raiogmphic examination. When radiographically
33、examined in accordance with 4.3.2, the gas generators shall show proper assembly, presence of parts, sealing and presence of primary components. The radiographic inspection shall show no foreign materiais present. 3.53 Leakage. Gas generators shall not exhibit a leak rate in excess of 2.7 x lo- cubi
34、c centimeters per second (cmYs) of helium (1.1 x 10” cm% of air) at a pressure differential of 1 .O A O. 1 atmospheres when tested in accordance with 4.3.3. 35.4 Bridgewire resistance. The bridgewire resistance between pins A - B and C - D shall be 0.90 to 1.10 ohms and the shunt bridgewire resistan
35、ce between pins B - C shall be 0.70 to 1.30 ohms when tested in accordance with 4.3.4. 3.6 Gas generator performance. Gas generators shall meet all requirements of 3.6.1 through 3.6.3 and the acceptance criteria of 4.4. 3.6.1 Electrical characteristics. 3.6.1.1 Electrostatic discharge. Gas generator
36、s shall not fire, dud, or otherwise be affected when tested in accordance with 4.3.5. 3.6.13 Dielectric withstanding voltage. Gas generators shall not exhibit a leakage current in excess of 0.1 milliamperes when tested in accordance with 4.3.6. 3.6.1.3 Stray voltage. Gas generators shall not fire, d
37、ud, or otherwise be affected when tested in accordance with 4.3.7. 3.6.2 Environmental. 3.6.2.1 Six-foot drop. Gas generators shall not fire or incur any detrimental intenidexternal damage or degradation as a result of the six-foot drop test in accordance with 4.3.8 and shall meet the functioning re
38、quirements of 3.6.3 when tested. 3.6.2.2 Shock. Gas gas generators shall not initiate or incur any internai/external damage or degradation when shocks are applied in accordance with 4.3.9 and shall meet the functioning requirements of 3.6.3 when tested. 5 Provided by IHSNot for ResaleNo reproduction
39、 or networking permitted without license from IHS-,-,-MIL-DTL-32027( OS) * 3.6.2.3 Vibration. Gas generators shall not initiate or incur any internallexternal damage or degradation when vibration cycles are applied in accordance with 4.3.10 and shall meet the functioning requirements of 3.6.3 when t
40、ested. 3.6.2.4 Temperature/humidity/dtitude (TH 5 OF for a minimum of 12 hours prior to conducting test. b. Verify test environment of 70 2) prior to restart of the test following modification or replacement of the vibration table, test fixture or test item; 3) if response data recorded during a par
41、ticular vibration test indicates that the resonant frequencies have shifted in excess of +lo%. Resonance surwey: Perform a sine sweep from 5 Hz to 2,000 Hz at a frequency sweep rate of one octave/minute. The input level is .O24 inch double amplitude or +- 2 gs, whichever is less. Resonant points sha
42、ll be noted, the response recorded and plotted, with the modes of each resonance described. Resonant modes: A resonant mode shall be considered to be any frequency-dependent mechanical disturbance which can be detected visually, aurally or by means of other sensing devices. A resonant mode exists at
43、 any frequency at which the ratio of specimen response level to input level is at a peak such that both an increase and a decrease in the excitation frequency will produce a decrease in the specimen levels. A gain of two between the output and input shall generally constitute a resonance. f. Each te
44、st item shall be subjected to the Figure 4 vibration schedule at -72 OF, +7OoF and +160“F. The vibration time per each axis shall be equally divided for vibration at -72 OF, +7OoF and +160F. The gas generator axis orientation is shown on Figure 3. The vibration fixture shall not have any structural
45、resonance in the range of the vibration test frequencies. g. Failure of any gas generator to comply with the requirements of 3.6.2.3 shall be cause for rejection of the lot or first article or both. 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
46、MIL-DTL-32Q27 E 99999Ob 207b250 472 SERVICE SHOCK Basic Test Peak Value (Gs) pulse Duration (ms) 15 11I1 The oscillogram shall include a the about 3D long with a pulse located approximately in the center. The acceleration amplitude of ths ideal haif sins puise is A and its duration is D. Any acceler
47、ation pulse, which can be contained between the broken line boundaries when measured with a 250k low pass filter, is acceptable. I MIL-DTL-32027( OS) 1-1 Figure 2. Impact Shock We Fgure 3. Shock and Vibration Axes 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without licens
48、e from IHS-,-,- MIL-DTL-32027 9999906 2076253 309 Frequency (Hz) MIL-DTL-32027( OS) Performance Endurance Amplitude Amplitude (C/Hz) or (C/Hz) or PERFOWC: 111GAMs I I 11111 - ENWMCE: 16.OGRMS Random Tat Schedule (Test times in minuts per axis) I I I IlIlIl I 11111111 I I I llliy .o1 I . . . e 1 . .
49、4 s. I I I 5 I .I. oF,eauemcv mi 10 1 O00 10000 Random Performance 1 30 Random Endurance I 120 Figure 4. Vibration Profile 4.3.11 Temperature/humidity/aititude (TH no aircrew interaction is required. Six (6) 33300-301 gas generators are installed in various locations within the dry bays. The gas generators are connected to a Fire Suppression Control Alarm (FSCA), which is connected to Optical Fire Detectors (OFDs). Upon se
