1、* Th Department !INCH-POUND! MI L-L-85776A(AS) 30 November 1990 SUPERSEDING M L- L-857 7 6 ( AS 1 8 November 1985 MILITARY SPECIFICATION LAUNCHER, ROCKET LMU-Z4A/E AND LMU-24B/E s specification is approved for use by the Naval Air Systems Command, of the Navy, and is available for use by all Departm
2、ents and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification establishes the requirements for the manufacture and inspection of the Launcher, Rocket LMU-24A/E and LMU-24BIE. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1 . 1 Speci fi cations , standards, and handbook
3、s. The fol 1 owi ng specifications, standards, and handbooks form a part of this document to the extent specified herein. documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). U
4、nless otherwise specified, the issues of these STAN DARDS MI LI TARY MIL-STD-105 MIL-STD-109 MIL-STD-129 MI L-STD-81 O MI L-STD-2073- DOD-STD-2 1 O1 MIL-STD-45662 Sampling Procedures and Tables for Inspection of Attributes Quality Assurance Terms and Definitions Marking for Shipment and Storage Envi
5、 ronmental Test Methods and Engineering Gui del i nes DOD Materiel Procedures for Development and Appl i cation of Packagi ng Requirements Classi fi cation of Characteristics Cal i bration System Requirements Beneficial comments (recommendations, additions, deletions) and any pertinent data which ma
6、y be of use in improving this document should be addressed to: Command1 ng Offi Cer, Naval Ai r Engi neeri ng Center, Systems Eng! neeri ng and Standardization Department (SESD) Code 53, Lakehurst, NJ 08733-5100, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at
7、the end of this document or bv letter. AMSC NIA FSC 1055 DISTRIBUTION STATEMENT A. Approved for public release; distri bution is unlimited, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-8577hA LO 79999Oh Oi157405 3 - MI L-L-85776A(AS) (Un1 es
8、s otherwi se indicated, Copi es of federal and mi 1 i tary spec1 fi cations, standards, and handbooks are avai lab1 e from the Standardization Documents Order Desk, Bldg 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094). other Government documents, drawings, and publications form a part of this d
9、ocument to the extent specified herein. are those cited in the solicitation. 2.1.2 Other Government documents. drawings and publications. The following Unless otherwise specified, the issues DRAW1 NGS NAVAL AIR SYSTEMS COMMAND (CAGE Code 30003) DL1 335AS700 DL1 335AS900 1335AS260 1335AS275 Launcher,
10、 Rocket LMU-24A/E Launcher, Rocket LMU-24B/E Igniter, PVU-3B/E Igni ter, PVU-3A/E (Appl i cation for Copi es should be addressed to Commanding Offi Cer, Naval Ai r Techni cal Servi ces Faci 1 i ty (NATSF) (Code 31 21 1, 700 Robbi ns Avenue, Phi 1 adel phi a, PA 191 11-5096). 2.2 Non-Government publi
11、cations. The following document(s) form a part of thi s document to the extent specified herein. Un1 ess otherwi se specified, the issue of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. documents not listed in the DODISS are the issue of t
12、he documents cited in the solicitation (see 6.2). Unless otherwise specified, the issues of AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) ANSI B46.1 Surface Texture (Surface Roughness Waviness and Lay (Application for copies should be addressed to the American National Standards Insti tute, 1430 Broa
13、dway, New York, NY 10018-3308.) (Non-Government standards and other publications are normally available from the organizations that prepare or distri bute the documents. may be available in or through libraries or other informational services.) These documents also 2.3 Order of precedence. In the ev
14、ent of a conflict between the text 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 specif
15、ied (see 6.2), a sample shall b,e subjected to 3.2 Material and processes. first article inspection (see 6.4) in accordance with 4.4. The materlal and processes utilized in the fabrication of the launcher shall conform to the requirements indicated on the drawings and specifications listed on DL1335
16、AS700 and DL1335AS900 (see 4.1.3, 6.2, and 6.3). 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L- L-857 7 6A (AS ) 3.2.1 Recycled virsin and reclaimed materials. There is no exclusion to the use of recycled or reclaimed materials and no mandat
17、e for the use of virgin materials provided it meets the requirements of this specification. 3.3 Desiqn and construction. The launcher shal.1 be of design, construction, and physical dimensions specified on the drawings and specifications listed on DL1335AS700 and DL1335AS900. 3.4 Envi ronmental cond
18、i tioni nq. The launcher shall be capable of exposure to high temperature, low temperature, and humidity without degradation of performance (see 4.6.2, 4.6.3, and 4.6.4); 3.5 Performance. 3.5.1 Recvcle time and amperaqe (M101). When operated with a fully charged battery, the time required for monito
19、red voltage to regain a level of 195 * 20 volts direct current (Vdc) for subsequent actuation shall be not greater than 360 seconds. The amperage from the battery, at the end of this time, shall be not greater than 140 milliamperes (see 4.6.5). 3.5.2 Firing pin penetration (M102). When actuated, the
20、 firing pin shall produce a 0.015 inch minimum deep depression without rupture in the percussion primer of the PVU-SB/E igniter, Drawing 1335AS260, or the PVU-3A/E igniter, Drawing 1335AS275 (see 4.6.6). 3.5.3 Discharge time and voltaqe test (MT03). After removal of the enable plug, the time for the
21、 voltage drop from 195 * 20 volts to not greater than 50 volts shall be not greater than 4 seconds (see 4.6.7). 3.6 Norkmanship. The workmanship requirements are as specified on the drawings and the following. Workmanship and finish shall be in accordance with the highest grade practi ce used in man
22、ufacturi ng mi 1 i tary weapons. items and parts shall not exhibit poor material and processing such as seams, laps, laminations, cracks, visible steps, sharp edges, nicks, scratches, burrs, deformations, and missing operations which may affect serviceability, functioning, operation, appearance, or
23、safety. Fins and other extraneous metal shall be removed from cast or forged parts. Hammering to shape, salvage operations (including repair by welding), or other similar practices shall not be permitted without prior approval of the contracting officer. No part or assembly shall contain chips, dirt
24、, grease, rust, corrosion, or any other foreign matter. Fi ni shed 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibilitv for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests
25、) as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other faci 1 i ti es sui table for the performance of the inspection . requi rements spec! fi ed herei n, un1 ess di sapproved by the Government. Government reserves the righ
26、t to perform any of the inspections set forth in this specification where such inspections are deemed necessary to ensure suppl i es and servi ces conform to prescribed requirements (see 6.2). The 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL
27、-L-577bA LO W 777770b 0457407 7 W ! - 4.1.1 Responsi bi 1 i tv for compl lance. Al 1 i tems shall meet al 1 requirements of sections 3 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspect
28、ion requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptabl e
29、practice to ascertai n conformance to requi rements, however, thi s does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to accept defective material. 4.1.2 Test equipment and inspection facilities, The manufacturer shall ensure tha
30、t test and i nspectton faci 1 i ti es of sufficient accuracy, qual i ty, and quantity are established and maintained to permit performance of required inspections. Al 1 test and measurement equipment shall be cal i brated and mai ntai ned i n accordance wi th MIL-STD-45662. all test and measurement
31、equipment shall have an accuracy within one-fifth of the tolerance for the variable to be measured, Un1 ess otherwi se specified herei n, 4.1.3 Certification. When specified, a written certification (see 6.2 and 6.31, accompanied by objective quality evidence (as defined in MIL-STD-109) that the mat
32、eri al s and processes conform to the requi rements i ndi cated on the drawi ngs and speci fi cations 1 i sted on DL1 335AS700 and DL1 335AS900, shall be avai 1 ab1 e to the acqui ri ng activity. 4.1.4 Classification of characteristics. The characteristics verified by the tests and examinations here
33、in are classified as major or minor in accordance with DOD-STD-2101. the symbol (MI. The number following the classification symbol indicates the serial number of the requirement. classification code are classified as minor. Requirements that are major characteristics are identified by Requirements
34、which are not annotated with a 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.4). b. Quality conformance inspection (see 4.5). 4.3 Inspection conditions. Unless otherwise specified herein, all inspections
35、shall be performed in accordance with the test conditions specified in the “General Requirements“ of MIL-STD-810 (see 6.2). I 4.4 First article inspection. First article inspection shall be performed on sample units produced with equipment and procedures normally used in production. consist of five
36、launchers and five sets of unassembled metal parts (see 6.2 and 6.4). 4.4.1 Sample. Unless otherwise specified, first article sample shall 4.4.2 Inspection routine. inspections specified in table I. shall be cause for rejection. The first article inspection shall consist of the Failure to pass any o
37、ne of the inspections 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE I. First article inspection. Met hod paragraph Inspection Sampl i ng procedures Vi sual Vi sual Envi ronmental High temperature Low temperature Humi di ty paragraph 3.2, 3.
38、6 Performance Recycle time and amperage (M101) Fi ring pin penetration (M102) Discharge time and vol tage (M103) 4.6.1 4.6.5 4.6.6 4.6.7 Requirement paragraph 4.5.2 4.5.3 4.5.3 4.5.3 3.3 3.4 3.4 3.4 3.5.1 3.5.2 3.5.3 - 11 Samples consist of five launchers and five sets - 21 Samples consist of five l
39、aunchers. Met hod Number of paragraph 4.6.1 4.6.2 4.6.3 4.6.4 4.6.5 4.6.6 4.6.7 10 J./ 5 21 5 21 5 21 5 21 5 21 5 21 I I if unassembl ed metal parts. 4.5 Ouality conformance inmection. Quality conformance inspection shall consist of Group A inspection (see 6.6.1) specified in table II. TABLE II. Gro
40、w A inspection. I Inspect i on I Requirement Performance Recycle time and amperage (Ml011 Firing pin penetration (M102) 3.5.1 3.5.2 3.5.3 4.5.1 Inspection lot. An inspection lot shall be as defined in MIL-STD-105 and shall consist of all launchers offered for inspection during a period of 1 month pr
41、ovided the homogeneity requirements of inspection lots have been retained. 4.5.2 Sampling plan. The sample size for visual inspection shall be in 4.5.3 Individual inspection. Individual inspection is inspection conducted accordance with MIL-STD-105, inspection level II. on each launcher (100 percent
42、 inspection). cause for rejection of the launcher. Failure to pass inspection shall be 4.6 Methods of inspection. 4.6.1 Visual examination. Visual examination shall be made for such defects as defective metal, burrs, sharp corners, foreign matter, protective finish defects, marki ng mi ssi ng, incor
43、rect or i 11 egi bl e, thread damaged or not full , 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-577hA LO 7777906 0457407 O MI L-L-8577 6A (AS holes, slots, radii or chambers missing. Four power (4x1 magnification may be used in performing
44、 visual examination for such defects as burrs and foreign matter. The roughness comparison specimens prescribed in ANSI B46.1 shall be used as a basis of compari son for surface roughness (fi ni sh) determi nation. 4.6.2 Hiah temperature operation. The launcher shall be placed in a conditioning cham
45、ber at 160 * 5F for a period of not less than 4 hours and not greater than 16 hours. The battery shall be removed from the electronics enclosure before performing thi s test. 4.6.3 Low temperature operation. The launcher shall be placed in a conditioning chamber at -40 * 5F for a period of not less
46、than 4 hours and not greater than 16 hours. enclosure before performing this test. The battery shall be removed from the electronics 4.6.4 Temperature and humidity. A temperature and humidity test shall be performed on the launcher in accordance with MIL-STD-810, Method 507.3, Procedure III. The dur
47、ation of the test shall be four 24-hour cycles. 4.6.5 Recycle time and amperage (M101). The battery shall be fully charged for the recycle test. The voltage from the J5-A, J6-A, J7-A, and J8-A connectors to the negative side of the battery shall be monitored using a multimeter with an input impedanc
48、e of not less than 20,000 ohms per volt (ohms/volt). switch shall then be activated for each position and the amperage from the battery shall be monitored using a current meter with an accuracy of not less than 2 percent of full scale. The firing 4.6.6 Firins pin penetration (M102). A PVU-3B/E ignit
49、er, Drawing 1335AS260 or a PVU-3A/E igniter, Drawing 1335AS275, devoid of all explosive materials except the M42 primer, shall be loaded into the launcher breech. The firing switch shall be actuated after a capacitor charging interval of 140 * 10 seconds. 4.6.7 Discharse time and voltaue (M103). The battery shall be fully charged for the discharge test. The voltage from the J5-A, J6- A, J7-A, and J8-A connectors to the negative side of the battery shall be monitored using a multim
