1、-.- MI L-G-8 1 737A (AS) 24 August 1984 SUPERSEDING MIL-G-81737(AS) 14 August 1969 MI LI TARY SPEC1 FI CATION GELLING UNITS, FUEL MARK 1, NOD O AND MOD 1 This Specification is approved for use by the Naval Air Systems Command, Department of the Navy, and is available for use by all Departments and A
2、gencies of the Department of Defense- 1. SCOPE 1.1 Scope. This document covers the minimum requirements for electrically powered, mechanical gelling units used for the production of gelled fuel for fire bombs. vol tage (220/440) capabi 1 i ties. Specified in the contract or purchase order (see 6.2):
3、 AT1 gelling units covered by this document have complete dual 1.2 Classification. Units shaT1 be wired to the following types as Type I - 220 volts, 60 hertz (Hi!), 3 phase Type II - 440 volts, 60 Hz, 3 phase 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and han
4、dbooks. Unless otherwise specified, the following specifications, standards, and handbooks of the issue listed in that issue of the Department of Defense Index of Specifications and Standards (DODISSI specified in the solicitation form a part of this specification to the extent specified herein. Ben
5、eficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Engineering Specifications and Standards Department (Code 93), Naval Air Engineering Center, Lakehurst, NJ 08733 by using the self-addressed Standard
6、ization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. FSC 1040 7- . THIS DOCUMENT CONTAINS - j3- PAGES Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SPEC1 FICATIONS F ED ERAL QQ-S-781 PPP-B-60 1 PP
7、P-B-6 36 PPP-T-97 MILITARY MIL-P-116 MI L-G-5572 MIL-H-83282 MIL-G-1737A LO m 7777906 0357779 T -* MI L-T-5624 STANDARDS MILITARY MIL-STD-129 MI L-STD- 1 43 MI L-STD-81 O MI L-STD-889 MI L-G-817 37A (AS) Strapping, Steel, and Seals Boxes, Wood, C1 eated-P1 ywood Boxes, Shipping, Fiberboard Tape, Pre
8、ssure-Sensi tive Adhesive, Fi 1amentReinforced Preservation, Methods of Gasoline, Aviation, Grades 80/87, 100/130, 115/145 Hydraulic Fluid, Fire Resistant, Synthetic Hydrocarbon Base, Aircraft, NATO Code Number H-537 Turbine Fuel, Aviation, Grades JP-4 and JP-5 Marking for Shipment and Storage Stand
9、ards and Specifi cations, Order of Precedence for the Selection of Environmental Test Methods and Engineering Guidelines Di ss imi 1 ar Metal s 2.1.2 Other Government documents, drawings, and publ ications. The fol lowing other Government documents, drawings, and publ i cations form a part of this s
10、pecification to the extent specified herein. NAVAL AIR SYSTEMS COMMAND (Code Ident 30003) AS-1 532-1 Gel Component ( Non-Al ka1 i ne), Fi re Bomb (Solution A) AS-1 533 NAVA1 R 1 Gel Component (Al ka1 i ne), Fire Bomb (Solution BI 9-1-112 Gelling Unit, Fuel, Mark 1, Mod O Operational Maintenance and
11、Ove.rhau1 Instructions with IPB DL2581 669 Gelling Unit, Fuel, Mark 1 Mod O DLl558AS100 Gelling Unit, Fuel, Mark 1 Mod 1 e Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-G-81737A LO m 777970b 0357775 1 m L MIL-G-81737A(AS (Copies of specificatio
12、ns, standards, handbooks, drawings, and pub1 ications required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) specification to the extent specified herein. 2.2 Other publications. The fol
13、lowing documents form a part of this AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTW 01655-83 Turbine Fuels, Specification for (Application for copies of ASTM publications should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) UNIFORM
14、 CLASSIFICATION COMMITTEE, Agent Uniform Frei ght C1 assi f i cat i on Ru1 es (Application for copies should be addressed to the Uniform Classification 2.3 Order of precedence. In the event of a conflict between the text of Committee, Room 1106, 222 South Riverside Plaza, Chicago, IL 60606.) this sp
15、ecification and the references cited herein, the text of this- specification shall take precedence. . 3. REQUIREMENTS 3.1 First article. When specified, a sample shall be subjected to first 3.2 Selection of specifications and standards. Specifications and O article inspection (see 4.4 and 6.3). stan
16、dards for necessary commodities and services not specified herein shall be selected in accordance with MIL-STD-143. 3.3 Materials. Materials shall conform to applicable specifications and drawings, and shall be as specified herein. Materials which are not covered by specifications, or which are not
17、specifically described herein, shall be of the best quality, of the lightest practical weight, and suitable for the purpose intended. 3.3.1 Metal parts. All metal parts shall be of corrosion resistant material or treated in a manner to render them adequately resistant to corrosion. 3.3.1.1 Dissimila
18、r metals. Unless suitably protected against electrolytic corrosion, dissimilar metals shall not be used in intimate contact with each other. Dissimilar metals are defined in MIL-STD-889. 3.4 Design and construction. unit shall be in accordance with the applicable drawings listed on DL2581669 and the
19、 Mod 1 unit shalt be in accordance with the applicable drawings listed on DLl558ASl0, and the requirements listed herein. The design and construction of the Mod O e 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.5 Performance. 3.5.1 Wiring and r
20、otation. The motor shall rotate in a counterclockwise e direction as viewed from the fan end when the unit is examined in accordance with 4.6.2 through 4.6.2.2, with assignment of voltage as specified by the procuring activity (see 6.2). 3.5.2 Gel mobility. The average flow of the gelled fuel produc
21、ed by the unit shall not exceed 4 inches in 60 21 seconds when tested in accordance with 4.6.3 through 4.6.3.3. 3.5.3 Blending. The unit shall blend the gelling agents in the ratios of 4.8 to 5.04 volumes of Solution A (see 6.4) and 2.42 to 2.54 volumes of Solution i3 (see 6.4) per 100 volumes of fu
22、el in accordance with 4.6.4 through 4.6.4.2.1. 3.5.4 Capacity. The unit shall deliver gelled fuel at a minimum rate of 35 gallons per minute (gpm) from the gel-discharge hose when operated in accordance with instructions given in 4.6.4 through 4.6.4.2.2 with a suction head of 6 21 feet for solutions
23、 and fuel. 3.5.5 Leakage. There shall be no gage indicated pressure drop and no external leakage from any joint, shaft seal, or mating surface of the unit when subjected to 150 25 pounds per square inch gage (psig) pressure in accordance with the testing procedures specified in 4.6.5 through 4.6.5.1
24、. 3.5.6 Pressure switch requirements. The pressure switch shall automatically shut down the unit within 20 seconds after the supply of Solution A is depleted. Functioning shall be tested in accordance with 4 3.5.7 Temperature switch. The temperature switch shall automati cal ly down the unit when th
25、e aviation gasoline (115/145 octane) in the fuel sec is 175 25F. Functioning shall be tested in accordance with 4.6.7. 6.6. O shut i on 3.6 Environmental. The unit shall meet all the requirements as specified herein during operating and after non-operating exposure to the fol lowing environmental co
26、nditions when tested as specified in 4.6.8 through 4.6.10. a. Operating (1) Low temperature: (2) High temperature: b . Non-operat i ng (1 ) Low temperature : (2) High temperature: (3) Vibration: +20“ F +120“F -65F +165“F 5 to 30 Hz at 1.5 gravity units (g); 31 to 50 Hz at 0.033 inch double amplitude
27、 (da) 4 .- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-BL737A 10 M 7747706 0357777 5 E r MIL-G-81737A(AS) 3.7 Workmanship. The unit, including all parts and accessories, shall be constructed and finished in a manner to ensure compliance wit
28、h all the requirements of this specification. neatness and thoroughness of soldering, wiring, marking of parts, plating, painting, and freedom from burrs and sharp edges (see 4.6.1). Particular attention shall be given to 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless othe
29、rwise Specified in the contract or purchase order, the contractor i s responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performan
30、ce of the inspection requirements specified herein, unless disapproved by the Government, The Government reserves the right to perform any of the inspections set forth in the specifications where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements
31、. herein are classified as follows: 4.2 Classification of inspection. The inspection requirements specified a. First article inspection (4.4) 6. Qual i ty conformance inspection (4.5) 4.3 Test conditions. Unless otherwise specified, the units shall be tested under the fol lowing standard conditions:
32、 a. Temperature: 77 218F b. Humidity: 90 percent maximum c. Barometric pressure: Local standard 4.3.1, Stabi 1 ization. Temperature stabi 1 ization wi 11 have been attained when the temperature of the part of the test item considered to have the longest thermal lag does not change more than 3.6“F pe
33、r hour. 4.4 First aricle inspection. First article inspection shall consist of all the examinations and tests listed in Table I in the sequence shown. 4.4.1 First article sample. Unless otherwise specified, as soon as practicable after the award of the contract or order, the manufacturer shall submi
34、t one unit. The unit shall be representative of the construction, workmanship, components, and materials to be used during production. inspection reports will be forwarded to the government qual i ty control representative (see 6.2). sample may be delivered as one of the units of supply under the co
35、ntract, Approval of the first article sample shall not relieve the contractor of his obligation to meet the requirements of the specification for the remaining units being furni shed under the contract 4.4.1.1 Upon completion of the first article inspection, all applicable 4.4.1.2 Following acceptan
36、ce by the government activity, the first article 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-L737A 10 777770b 0357778 7 R MI L-G-81737A(AS) 4.4.1.3 Failure and retest. Failure to meet any of the requirements specified herein or pass any o
37、f the first article examinations or tests specified in Table I shall be cause for rejection. Full particulars concerning the failure and measures to be taken to correct the defects shall be forwarded to the government inspector, contracting officer, and responsible design activity with 30 days of th
38、e failure (see 6.2). Upon resubmission of the unit for inspection after a failure, the inspection shall start at. the beginning of the test during which the failure occurred. TABLE I. First article inspection REQUI REME NT METHOD SEQUENCE EXAMINATION OR TEST PA RAG RAP H S PARAGRAPH 1 Nor kman s h i
39、 p / Ex ami na t i on of product 3.7 4.6.1 2 Wiring and rotation 3.5.1 4.6.2 3 Leakage 3.5.5 4.6.5 4 Gel mobility (standard conditions) 3.5.2 4.6.3 5 Low temperature (mobi 1 i ty with 3.5.2 4.6.8 solutions and fuel at t20 25F) 3.6a(l 3.6b(l) 6 High temperature (mobi 1 i ty wi th 3.5.2 4.6.9 solution
40、s and fuel at t120 55F 3.6a(2) 3.6b(2) 7 Vi bration 3.6b33) 4.6.10 8 Gel mobility (standard conditions) 3.5,2 4.6.3 9 B1 endi ng and capac i ty ( standard 3.5.3 4.6.4 conditions) 3.5.4 10 Pressure switch 3.5.6 4.6.6 11 Temperature switch 3.5.7 4.6.7 12 Examination of product 4.6.1 be as specified in
41、 Table II in the sequence shown. examinations or tests specified in Table II shall be cause for rejection. 4.5 Quality conformance inspection. Qual i ty conformance inspections shall Failure to pass any of the O 6 . - . . . . . ,- ,. - - Provided by IHSNot for ResaleNo reproduction or networking per
42、mitted without license from IHS-,-,-. 1 MIL-G-L737A 10 W 7799706 0357797 7 e MIL-G-81737A(AS) TABLE II. Qual i ty conformance inspection EXAMINATION OR TEST - Workmans hi p/Exami nati on of product Wiring and rotation Leakage Temperature switch Pressure Switch Gel mobility (standard conditions) Exam
43、ination of product Packaging REQUIREMENT PA RAGRAP H S 3.7 3.5.1 3.5.5 3.5.7 3.5.6 3.5.2 3.7 Section 5 The materials used in some of these tests are volatile or caustic. Extreme caution should be observed during the following tests (see NAVAIR 19-1-112). METHOD PARAGRAPH 4.6.1 4.6.2 4.6.5 4.6.7 4.6.
44、6 4.6.3 4.6.1 4.7 4.6 Methods of examination and test. 4.6.1 Examination of product. The units shall be examined for conformance with this specification and applicable drawings with respect to workmanship, material, dimensions, and markings. 4.6.2 Wiring and rotation. For both the Mod O and the Mod
45、1, examination of the wiring and rotation shall be made to determine that the internal wiring corresponds to the requirements of the specified documents and for use at the vol tage designated in the procurement document as follows: 4.6.2.1 Mod O. Examination shall determine that the internal wiring
46、to the latching coi 1 I heater coi Is, and motor shall correspond to the requirements of the documents specified in DL2581669 for use at the voltage designated (see 6.2). 4.6.2.2 Mod 1. Examination shall determine that the internal wiring to the latching coil, overload relays, and motor shall corres
47、pond to the requirements of the documents specified in DL1558AS100 for use at the voltage designated (see 6.2). 4.6.3 Gel mobility. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-BL737A LO m 399Ub 0359800 L m 4.6.3.1 Test materials. When pre
48、paring gels for test purposes, the following materials chal 1 be employed: turbine fuel JP-4 and JP-5 as specified in MIL-T-5624; or aviation turbine fuel as specified in ASTM D1655. a. Fuel: Aviation gasoline as specified in MIL-G-5572; aviation b. c. Solution A that has met the requirements of AS-
49、1532-1. Solution B that has met the requirements of AS-1533-1. 4.6.3.2 Test apparatus. The apparatus required for the gel mobility test shall consist of the following: horizontal plane. The plate shall be covered with a piece of clean, dry, 20-weight bond paper, a minimum 8 by 13 inches in size. a. A steel “test plate“ inclined at an angle of 45 +2“ to the b. A 50-milliliter (ml) beaker. c. A stopwatch. 4.6.3.3 Test
