1、DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited INCH POUND MIL-DTL-19264C (OS) 23 October 2009 SUPERSEDING MIL-P-19264B (OS) 10 November1993 DETAIL SPECIFICATION PROPELLANT, BS-NACO, FOR THE MK 65 CLEARING CHARGE AND MK 67 PROPELLING CHARGE This specification is appr
2、oved for use within the Naval Sea Systems Command, Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the minimum requirements for BS-NACO Propellant for use in the MK 65 clearing charge and the
3、 MK 67 propelling charge (see 6.1). 1.2 Classification. The propellant will be cylindrical multiperforated grains. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are cited in Sections 3, 4, or 5 of this specification. This section does not include documents cited in other
4、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, users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this specification, wheth
5、er or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the so
6、licitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-G-155 Graphite, Dry (For Use in Ammunition) MIL-P-193 Potassium Sulfate (For Ordnance Use) MIL-DTL-244 Nitrocellulose MIL-E-255 Ethyl Centralite (Carbamite) MIL-L-18618 Lead, Carbonate, Basic, Dry (For Ordnance Use) MIL-B-21465 Butyl S
7、tearate, Normal Comments, suggestions, or questions on this document should be addressed to Department of the Navy, Indian Head Division, NSWC, Code E12P, Document Control, 4123 Artisans Court, Suite 103, Indian Head, Maryland 20640-5085, OFFICIAL BUSINESS, or emailed to amanda.pennnavy.mil. Since c
8、ontact information can change, you may want to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil/. AMSC N/A FSC 1376 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-19264C (OS) 2 DEP
9、ARTMENT OF DEFENSE STANDARDS MIL-STD-129 Military Marking for Shipment and Storage MIL-STD-286 Propellants, Solid; Sampling, Examination and Testing MIL-STD-652 Propellants, Solid, For Cannons Requirements and Packing DOD-STD-2101 Classification of Characteristics (Copies of these documents are avai
10、lable online at http:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications fo
11、rm a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation or contract. DRAWINGS NAVAL SEA SYSTEMS COMMAND (CAGE Code 10001) 3208375 Charge, Propelling, 5-Inch, 54-Caliber, Full Mark 67 Mod 3 (Application for copies of NAVSEA
12、 drawings should be addressed to: US Navy Major Caliber Propelling Charge AEA, Naval Surface Warfare Center Indian Head Division Picatinny Detachment, Attn: G2, Picatinny, NJ 07806-5000.) 2.3 Non-Government publications. This section does not apply to this document. 2.4 Order of precedence. Unless o
13、therwise noted herein or in the contract, in the event 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 obtain
14、ed. 3. REQUIREMENTS 3.1 First Article. When specified (see 6.2), a sample shall be subjected to first article inspection (see 6.3) in accordance with 4.4. 3.2 Composition (M101). The propellant shall meet the requirements of Table I when analyzed (see 4.6.1). 3.3 Grain form and dimensions (M102). 3.
15、3.1 Perforations. The grains shall be cylindrical with seven (7) evenly spaced axial perforations (see 4.6.2, 4.6.3 and 6.6). 3.3.2 Length. The length to outer diameter ratio for the grains shall be between 2.10 and 2.50 (see 4.6.2, 4.6.3 and 6.6). 3.4 Glaze. The propellant shall be glazed with grap
16、hite, MIL-G-155, Grade IV (see 4.6.3). 3.5 Integrity. The propellant grains shall be without cracks or incipient cracks between the perforations or between the perforations and the outside edge of the grain (see 4.6.3). Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
17、ense from IHS-,-,-MIL-DTL-19264C (OS) 3 TABLE I. NACO composition. Material Specification Percent by Weight Nitrocellulose, Grade E, Type I MIL-DTL-2441/ 93.55 (nominal) n-Butyl Stearate MIL-B-214652/ 3.00 0.30 Ethyl Centralite, Class 2 MIL-E-255 1.20 0.20 Basic Lead Carbonate MIL-L-186183/ 1.00 0.2
18、0 Potassium Sulfate, Type I MIL-P-193 1.25 0.30 Moisture - 1.00 (min) to 3.00 (max) Total Volatiles MIL-STD-652, Figure 1 5.0 max Graphite, Grade IV MIL-G-155 0.10 0.05 1/ The nitrocellulose shall have an average nitrogen content of 12.00 0.10 percent, and shall have a viscosity of 5 2 seconds. The
19、required nitrogen content may be obtained by blending nitrocellulose containing 11.90 to 12.20 percent nitrogen. Average nitrogen content determination shall be made only when specifically requested in the contract (see 6.2). 2/ The n-butyl stearate specific gravity shall be determined at 25C/25C an
20、d the sample weight shall be 2.5 to 3.2 grams for iodine test. 3/ The compatibility tests for lead carbonate with Cordite-N propellant shall not be performed. 3.6 Stability (C1). Using the 134.5 Celsius (C) heat test, the methyl violet test paper shall not fade to a salmon-pink color in less than 40
21、 minutes and the propellant shall not self initiate in less than 5 hours (see 4.6.4). 3.7 Packing depth (M103). The minimum production packing depth (PPD) of the assessed charge weight shall be 3.5 inches (measured from the case mouth) (see 4.6.5). 3.8 Gun ballistic assessment requirements. 3.8.1 Ve
22、locity (M104). The charge weight of the test propellant (TP) shall be assessed to result in a nominal average projectile muzzle velocity matching that obtained for the reference propellant (RP) via the powder proof firings (see 4.6.6.3.2). 3.8.2 Pressure (M105). The maximum allowed chamber pressure
23、shall be 55,100 pounds per square inch (psi) (see 4.6.6). 3.8.3 Velocity variation (M106). The maximum allowed projectile muzzle velocity standard deviation shall be 10 feet per second (ft/sec) (see 4.6.6). 3.8.4 Pressure variation (M107). The maximum allowed chamber pressure standard deviation shal
24、l be 1,700 psi (see 4.6.6). 3.9 Propellant interface test. All first article lots shall be subjected to the propellant interface test. Production lots shall be subjected to the propellant interface test when directed by the procuring activity (see 4.6.9 and 6.5). Provided by IHSNot for ResaleNo repr
25、oduction or networking permitted without license from IHS-,-,-MIL-DTL-19264C (OS) 4 3.10 Workmanship. The propellant shall be manufactured using good workmanship and shall be a product free from foreign material. It shall be uniform in quality and manufactured in a manner to assure compliance with r
26、equirements of this specification when examined in accordance with 4.6.3. 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows. a. First article inspection (see 4.3). b. Quality conformance inspection (see 4.4). 4.2 Inspection cond
27、itions. Prior to the first article, all test activities identified in the contract shall submit a description of the proposed procedures and equipment to be used to perform the examination and test to the technical activity and the propelling charge design agent for review. 4.3 First article inspect
28、ion. First article inspection shall be performed by the contractor, after award of contract and prior to production, at a location acceptable to the Government. First article inspection shall be performed on sample units which have been produced with equipment and procedures normally used in product
29、ion. First article approval is valid only on the contract under which it is granted, unless extended by the Government to other contracts. The first article sample is intended to provide necessary information to establish the propellant granulation needed to meet the required ballistic performance p
30、arameters. 4.3.1 Submission. The contractor shall select three propellant granulations which, from experience, are expected to bracket the requirements of this specification. The contractor shall submit a first article sample as designated by the contracting officer for evaluation in accordance with
31、 4.4.2; it shall consist of three pilot lots of a maximum of 1,000 pounds mass each, representing the three candidate granulations. 4.3.2 Inspections to be performed. Each of the granulations comprising the first article sample and submitted in accordance with 4.4.1 shall be tested by the Government
32、. First article inspection shall consist of the tests specified in Table II. TABLE II. First article quality conformance tests. 4.3.3 Authorization. Government engineering and quality assurance personnel and the contractor shall review the pilot lot test data and shall select a granulation size whic
33、h best fits the requirements of this specification. The technical agency shall notify the contracting officer of the selected granulation. The contractor shall request approval from the contracting officer to produce the selected granulation. If none of the pilot lots submitted meets the requirement
34、s of this specification, a new first article sample Characteristic Requirement Test Method Composition 3.2 4.6.1 Grain Form and Dimensions 3.3 4.6.2, 4.6.3 Integrity 3.4 4.6.3 Glaze 3.5 4.6.3 Stability 3.6 4.6.4 Packing Depth 3.7 4.6.5 Velocity and Pressure 3.8 4.6.6 Workmanship 3.10 4.6.3 Provided
35、by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-19264C (OS) 5 shall be submitted in accordance with 4.4.1. All future production lots shall be of the same basic granulation. 4.3.4 Failure. Failure of the sample to meet the requirements of this specifi
36、cation shall be cause for rejection of the first article sample. 4.4 Quality conformance inspection. Quality conformance inspection shall consist of the examinations and tests of 4.6 to determine conformance to the requirements of this specification. Failure of any sample to conform to any requireme
37、nt specified herein shall be cause for rejection of the lot represented. Alternate methods and test procedures may be used provided prior written approval has been obtained from the procuring activity and the technically cognizant personnel at the following address: Department of the Navy, Naval Sur
38、face Warfare Center, Indian Head Division, ATTN: Gun Propelling Charge Design Agent (Code E14), 3767 Strauss Avenue, Suite 201, Indian Head, MD 20640-5150. Requirements and their corresponding tests are summarized in Table II. 4.4.1 Lot size. Unless otherwise specified in the contract or purchase or
39、der, the propellant shall be produced in lots of not less than 100,000 pounds mass nor greater than 500,000 pounds mass. 4.4.2 Sampling. The samples shall be selected from the full propellant packing containers (6.7.1) so as to be representative of the lot. All samples shall be selected following th
40、e final packing of the lot. All samples shall be packed in moisture-proof airtight containers and marked with the following in accordance with MIL-STD-129. a. Propellant description b. Propellant lot number c. Number of pounds in lot d. Manufacturer e. Contract number 4.4.2.1 For gun performance tes
41、ts. Sample size shall be approximately 2,420 pounds mass randomly selected from full propellant packing containers (6.7.1). 4.4.2.2 For physical characteristic tests. A 10 pounds mass sample shall be randomly selected from full propellant packing containers (6.7.1). 4.4.2.3 For surveillance tests. A
42、 5 pounds mass sample shall be randomly selected from the full propellant packing containers (6.7.1) and forwarded to the Navys designated surveillance activity for propellants specified in the acquisition documentation (6.2). 4.5 Classification of characteristics. The characteristics verified by th
43、e tests and examinations herein are classified as critical, major or minor in accordance with DOD-STD-2101. Requirements for critical characteristics are identified by the symbol (C) and major characteristics by the symbol (M). The number following the classification symbol indicates the serial numb
44、er of the characteristic. Requirements not annotated with a classification code are classified minor. 4.6 Methods of inspection. CAUTION This specification covers sampling and testing of chemical, toxic, or explosive materials, which are hazardous to personnel. Provided by IHSNot for ResaleNo reprod
45、uction or networking permitted without license from IHS-,-,-MIL-DTL-19264C (OS) 6 4.6.1 Chemical analysis. The chemical composition shall be determined using the methods specified in Table III. The requirements of 3.2 shall be met or the lot shall be rejected. TABLE III. Chemical analysis test metho
46、ds. Material Test Method of MIL-STD-286 Nitrocellulose 209.2.1 n-Butyl Stearate 222.1 Ethyl Centralite 202.2.3 Basic Lead Carbonate 311.1.3 or 316.1 Potassium Sulfate 310.3.1, 310.4.2, or 316.1 Moisture 103.5 Total Volatiles 103.5 Graphite 308.1.4 4.6.2 Grain dimensions. Grain dimensions shall be de
47、termined in accordance with MIL-STD-286, method 504.1.1 or 504.6.1. The requirements of 3.3 shall be met or the lot shall be rejected. 4.6.3 Visual examination. The propellant grains selected for the physical characteristic tests shall be visually examined prior to conducting the physical characteri
48、stic tests (4.6.1 and 4.6.2) to verify that: a. Grain form conforms to the requirements of 3.3. b. Grains are uniformly coated with graphite, conforming to the requirements of 3.4. c. Workmanship conforms to the requirements of 3.10. 4.6.4 Stability. Stability shall be determined in accordance with
49、MIL-STD-286, method 404.1.2 (134.5C heat test). The requirements of 3.6 shall be met or the lot shall be rejected. 4.6.5 Packing depth. Prior to all maximum packing depth (MPD) pour testing the propellant shall be conditioned for a minimum of four days at 90 3 Fahrenheit (F). The MPD is the distance, measured to the nearest tenth of an inch, from the case mouth to the upper level of any given propellant charg
