1、MIL-P-71093 (AR) 26 August 1992 MILITARY SPECIFICATION POWDER, IGNITION, GASLESS, F-33B This specification is approved for use by the U.S. Army Armament, Munitions and Chemical Command, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This sp
2、ecification covers the requirements, examinations and tests for composition F-33B for the procurement of gasless, ignition powder (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a
3、 part of this document to the extent specified herein. specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the Unless otherwise solicitation (see 6.2). SPECIFICATIONS FEDER
4、AL PPP-C-96 Cans, Metal, 28 Gage and Lighter PPP-B-601 Boxes, Wood, Cleated-Plywood PPP-B-6 21 Boxes, Wood, Nailed and Locker corner RcoeGcial cooimeots (nxmmmdatio, aditiais, deletions) and my pcmocnt data which my be of use io impmkg this document should be addressed 10: Commander, U.S. Amy ARDEC,
5、 AT”: SMCAR-RAGS, Rcati). ArunaJ, New Jerjcy MSW5000 by ushg the scif-addrrssed Standadkatioa Document Impovamint plpp-i6al (DD Fom 1426) apFcariog at the cod of this d/ motor stirrer drive, and water cans, and oxygen bomb, fabricated by the Parr Instrument Company, Inc., 211 3rd Street, Moline, Ill
6、inois 61625, or equivalent may be used for this test. Manual No. 128, Instructions for the No. 1411 Combustion Calorimeter, which is furnished with the calorimeter. When this specification is used as part of the description of The test apparatus and method of operation is described in 6.4 Advisory m
7、anufacturinq procedures. 6.4.1 Processinq of zirconium. The zirconium powder is Slurry zirconium in container by stored and shipped in water. rolling mill until all zirconium particles are in suspension. Filter the zirconium slurry using a filter flask, Buchner funnel, and No. 2 Whatman Filter paper
8、 or equivalent. twice with alcohol. When filter cake appears dry transfer to tared aluminum container. Immediately take random samples from the cake to make 50 grams. Dry the composite sample in a suitable oven at a temperature not to exceed 60 degrees C (140 F) until two successive weighings agree
9、within 0.02 percent. Calculate percent of zirconium from dry weight divided by wet weight of composite sample. Immediately weigh damp filter cake. Transfer weighed filter cake to container and slurry with alcohol on a jar roller mill. dry weight of zirconium which includes total of dry sample weight
10、s, and dry filter cake weight. Other ingredient weights are calculated on the basis of the calculated dry weight of zirconium. CAUTION: The operator should wear face shield, fire resistant Rinse filter cake Calculate clothing, asbestos gloves, safety glasses, and safety shoes. Operations such as wei
11、ghing, filtering, and transferring the dry powder should be done behind a shield. should be nonsparking material and grounded. Spatulas and containers 6.4.2 Drying and storaqe of ferric oxide and diatomaceous earth. The ferric oxide powder and diatomaceous earth shall be dried separately at 190 + 5
12、degrees F, (85 to 90 degrees C) in a suitable oven until two Successive weighings at 1 hour intervals agree to within 0.5 percent. diatomaceous earth shall be in a tightly closed container or in a suitable oven until ready for use. The dried ferric oxide powder and the 12 Licensed by Information Han
13、dling ServicesNIL-P-71093 13 = 99999Ob 11blI775 b55 MIL-P-71093 (AR) 6.4.3 Mi.xing of uasless ia nition powder . The mixing procedure is based on a single batch of ignition powder. The operator must exercise care to maintain safety and reproducibility of mixing conditions to provide a homogeneous mi
14、xture of the desired composition of ignition powder. The mixer should be located in an isolated and barricaded area. Weighing and mixing should be performed in a shielded area. (1) Add ethyl alcohol to a clean mixing bowl which is adapted to the mixer. (2) Weigh diatomaceous earth and ferric oxide a
15、nd add to the bowl. (3) Lower mixing blade (fluid shear type) into bowl and allow to run. (4) Stop mixer periodically and, using ethyl alcohol, wash accumulated material back into mixing area. (5) Add zirconium slurry and repeat steps 3 and 4. (6) Transfer mix into polyethylene bottles (a maximum of
16、 250 grams per bottle). Seal bottles in accordance with 5.1.1.1. 6.4.4 Drvina of ignition Dowder. (1) Pour material to be dried into a metal drying tray. (2) Dry at 60 degrees C for 16 hours minimum. (3) After drying, cool powder for a minimum of 20 minutes. (4) Transfer the dried and cooled ignitio
17、n powder to a 30-mesh sieve with porcelain balls or rubber stoppers. (5) Screen the powder on a Ro-Tap or shaking apparatus operated by remote control and located in an isolated and barricaded area. (6) When screened, remove the sieve pan behind a shield. (7) Transfer the screened ignition powder to
18、 conductive rubber containers. each container shall be limited to 50 grams. The maximum quantity placed in 6.4.5 Storage of mixed ianition Dowder. When ignition powder manufactured and stored is over 200 grams, the powder shall be stored wet in well-stoppered polyethylene container. Minimum weight o
19、f ethyl alcohol (conforming to MIL-E-463) added shall be 25 percent of weight of ignition powder. 13 Licensed by Information Handling ServicesMIL-P-71093 (AR) 6.5 Submission of inspection eauipment des ians fo r amroval. Submit equipment designs, as required to Commander, ARDEC, ATTN: SMCAR-QAR-R, P
20、icatinny Arsenal, New Jersey 07806- 5000. This address will be specified on the contract Data Requirements List, DD form 1423 in the contract. 6.6 Euuivalent test methods. Prior approval of the Contracting Officer is required for use of equivalent test methods. submitted thru the Contracting Officer
21、 to: Commander, US Army Armament Research, Development and Engineering Center, ATTN: SMCAR-QAR-R, Picatinny Arsenal, New Jersey 07806-5000. This description should include but not be limited to the procedures used, the accuracy and precision and drawings of any special equipment required. 6.7 Screen
22、ina for spec ific de fects . At the direction of the contracting officer, and with the recommendation of the preparing activity (SMCAR-QAR-R), batches may be screened for specific defects. A description of the proposed method should be 6.8 Subject term (keyword) listinq. Ammunition Projectile Delay Element Pyrotechnic C,u s t odi an s : Army-AR Preparing activity: Army-AR (Project: 1375-A479) 14 Licensed by Information Handling Services
