1、_ ._I MIL-C-60457 X3-i 9777906 0338664 2 XILITARY SPECIFICATION MIL-C-60459 (MU) 27 October i967 CARTRIDGC, 105PM, HE, ROCKET ASSISTED, U154 8, ROCKET PROPELLANT GRAIN FOR 1. SCOPE 1.1 This specification contains requirements not normally required by the drawings and provides quality assurance provi
2、sions for fabrication of the rocket propellant grain for the 105MM iiocket Assisted Cartridge, 1548. 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bids, or requests for proposals, form a part of this specification to the extent specified herein.
3、 SPECIFICATIONS MILITARY MIL-A-2550 MIL-1-45607 - Inspection Equipment, Supply and - Ammunition and Special Weapons General Specification For( Maintenance of. STANDARDS MILITARY MI- . .- . extruding the propellant grain shall comply with Specification .I 3.3 Propellant Grain. -The inhibited propella
4、nt grain shall cornply with all requirements sp cified on drawing 9212412 and with all requirements specified in applicable specifications, Cracks, fissures and foreign material.-The propellant grain shall contain no crack or fissure measuring more than 0.30 inch in any direction and no foreign mate
5、rial measuring more than 0.20 inch in any direction. cracks or fissures for the two halves (one grain) shall not exceed 0.60 inches and the combined length of all foreign material (maximum dimensions of each particle ,Df foreign matter) shall not exceed 0.40 inch. Cracks, fissures and foreign materi
6、al neasuring less than O. O31 inch (considering largest dimensioiis ) shall be disregarded. firs; attempt after the boron potassium nitrate pellets have 2 3.4 The tctal combined length of all 3.5 Duds.-The grain in the test motor shall function on the - - - -_I -+y+ . : : - . ; ignited. .f. I!: il 1
7、 .:- 1 .- ., i:. . _. I-. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-C-GO (MU) P r- -. II- .-T-.-73 - . - .-. _- *-,I 3.6 Inhibitor separation.-Thc 3ropellant grain shall contain b,!; ;7,-;:.,; - :a, ,:;.: ., ,*.,1j-,*:q.:;.; 3 I J :,:-. ;#.
8、, - ,:;s* i .:.l:r;a,.! , ,.; +i:.:*-!; : ,;:;I;., I tl+. .:. ,i:,: :-:-i: . . .l *._ , ;:? -: -3 no indiviual separations between th 3 inhibitor and the grain greater than 0.060 square inches and the total area of separation for the two halves shall not exceed 0.25 square inches. 3.7 Static functio
9、ning. - The slope of the normal pressure time trace after tne initial igiiitioii pressure peak shall be pro- gressively negative and shall contairi no pressure peak more than 300 psi above the normal operating curve for a duration of more than 0.030 seconds. 3 . 7 . 1 3.7.1.1 Pilinus 65OF. - Thcs av
10、erage of tlie maximum pressures shall be no less than 1220 psi and shall be rio greater than i330 The standard deviation fcr group shall be no greater than i115 psi and no greater than i435 psi. Maximum pressure . psi. No individual maximum pressure shall be less than 3.7.1.2 Plus 145OF. - The avera
11、ge of the maximum pressures shall be no less than i365 psi md shall be no greater than 1475 psi. The standard deviation fo:? the group shall be no greater than i03 psi. No individual maximum pressure shall be less than 1040 psi and no greater than 1800 psi. grain, a.4 support spider shall be used in
12、 the approach section of the extrusion die. dirt, grease, chips, gouges, inhibitor solvent drippings (Elba), and other defects which would make the item unsuitable for its intended use. 3.8 Process .-In the process 83f extruding the propellant 3.9 Workmanship.-The propellant grain shall be free of 3
13、.10 First Article Inspection. - This specification makes provisions for first article inspection. Requriements for the subnlisslon of first article samples by the contractor shall be as specified in the contract. 4. QUALITY ASSURANCE PROVISIONS 4.1 General quality assurance provisions.-Unless otherw
14、ise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified, the supplier may utilize his own facilities or any comiiiercial laboratory accept- able to the Government. The Governmen
15、t reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. Reference shall be made to Standard MIL-STD-109 in order to define terms used herein. The provisions o
16、f Specification MIL-A-2550 chal1 a.pply o Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-c-Go ( IKJ) 4.i.1 Submission of product.-At the time the completed lot f of product is submitted to the Government for acceptance, the contractor snall supp
17、ly the following information accompanied by a certificate which attests that the information provided is correct and applicable to the product being submitted: a* A statement that the lot complies with all of the quality assurance provisions specified within this specification. b. Number of units of
18、 product inspected; c. Results obtained, by defect code, for all inspections performed. d. Drawing, specification number and date, together with an identification and date of changes. e. Certificates of conformance on all material purchased by the contractor when such material is controlled by Gover
19、nment or coinmercial specifications referenced in any of the contractual documents, The certificate shall be signed by a responsible agent of the certifying organization. The initial certificate submitted shall e substantiated by evidence of the agents authority to bind his principal, Substantiation
20、 of the agents authority will not be required with subsequent certificates unless, during the course of tile contract, this authority is vested in another agent of the certifying organization. 4.1.2 Government verification.-Using the contractorls written quality assurance procedure, this detailed sp
21、ecification, the applicable drawings and other contractual documents as a guide, the Government inspector shall verify at unscheduled intervals, all quality assurance operations.performed by the contractor. Verification will be performed to the extent necessary to assure compliance with the contract
22、ual requirements. Severity of Government inspection of individual characteristics will be directly related to the seriousness of the classification assigned. In no instance. will a characteristic classified “criticalll be accepted solely on the basis of the contractors records. .f. Number of items i
23、n the lot. g. Date submitted. 4 2 First Article Inspection 4.2.1 Submission. - The contractor shall submit a first article sample as designated by the contracting officer for evaluation in accordance with the provisions of 4.2.2. The first article sample shall consist of 22 propellant grains which h
24、ave been produced by the contractor or furnishe by a supplier and which have been manufactured using the same production processes, procedures, and equipment which will be used in fulfilling tne contract. All parts and materials, including packaging and packing, shall be obtained from the same sourc
25、e of supply as will be used 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-h MIL-C-60459 (MU) in regular production. Prior to submission, the contractor shall inspect the sample to the degree necessary to assure that it con- forms to the requireme
26、nts of the contract and submit a record of this inspection with the sample, including statements of findingo/ certificates of conformance for materials, (see 4.1.1.1.e). A Sample containing known defects will not be submitted unless specifically authorized by the contracting officer. A first article
27、 sample or portion thereof, as directed by the contracting officer, shall also be submitted whenever there is a lapse in production for a period in excess of 90 days or whenever a change occurs in manufacturing process, material used, drawing or specification such as to significantly affect product
28、uniformity as determined by the Government. 4.2.2 Inspections to be performed. - Propellant grains will be subjected by the Government to any orall of the examinations or tests specified in 4.3.2 and 4.3.3 of this specification and any or all requirements of the applicable drawing. After examination
29、 for other requirements twenty propellant grains shall be static fired as specified in 4.4.3, ten at each of the applicable temp- eratures. Two propellant grains shall be tested for compressive strength as specified in 4.4.2. . ?. 4.2.3 Rejection. - If any grain fails to comply with any or all of th
30、e applicable requirements, the first article sample shall be rejected. The Government reserves the right to terminate its inspection upon any failure of an assembly or component in the sample to comply with any of the stated requirements. event of rejection the Government reserves the right to requi
31、re the contractor to take corrective action and submit a new first article samplq or portion thereof. Until a first article sample is accepted tQe contractor is, in no way, authorized by the Govern- ment to initiate regular production unless otherwise directed by the contracting officer. In the 4.3
32、inspection Provisions 4.3.1 Lot formation.-The term tilot as used throughout this specification refers to an inspection lot, which Is defined an an essentially homogeneous quantity of propellant grains from which a representative sample is drawn and inspected to etermine conformance OP the lot with
33、applicable requirements. The sample selected shall represent only that quantity of propellant graina from which the sample was drawn and shall not be construed to represent any prior or subsequent quantities presented for inspection. A lot shall consist of propellant gralns produced by one manufactu
34、rer, in accordance with the same specifications, and same specification revisions, same drawings and same drawing revisions. Each lot shall consist of propellant grains which 5 6 -_ _ F- r) I - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-60
35、459 (LIU) c have been subJectcd to the same chemical anu physical processes intended to make the final product homogeneous. The criteria and procedures for the assignment of lot numbcrs shall be in accordance witn Standard MIL-STD-1168. Unless otherwise approved by the contracting officer, the inspe
36、ction lot size of propellant grains deliverable under the contract shall be not less than the smallest weekly estimate of quantities contractually scheduled for production during the contract period nor more than the 1argesL quantity contractually scheduled for delivery during any month of the contr
37、act period. Each lot or propellant grains shall contain not more than one lot of carpet rolls from one manufacturer. following classifications of defects shall be in accordance with Standard MIL-STD-105 except that inspection for critical defects when listed, shall be 100 percent. Continuous samplin
38、g plans in accordance with Standard MIL-STD-1235 may be used if approved by the procuring activity. Also at the option of the procuring activity, AQLs and sampling plans msy be applied to the individual characteristics listed using an AQL 3f 0.40 percent for each major defect and an AQL of 0.65 perc
39、ent for each minor .defect. Once agreement has been reached as to which method will be used (group or individual) that method wi.11 be used for all of the necessary for the performance of the inspections listed shall be in accordance with 4 . 3.4. 4 3.2 Examination.-Sampling plans and procedures for
40、 the - - - - - classification of defects listed in :;his specification. Equipment -_1 . .i- . .- -. . . -.- .-1 - _. _.-.- . . -._. , .- .-. 4.3.2.1 Grain, propellant, prior to applying inhibitor (see dwg, 9212412). .-_.-_-.-I Cat egories De fe c i; s Method of Code No. Xnsp e a t ion (See 6,2) Crit
41、ical: None defined. Major: AQL 0.40 percent -8- 101. Outside .diameter, Gage O1001 Minor: None defined . 4.3.2,2 Grain, propellant, prior to spliting (see dwg. 9212412) Cat e go ries Defects Method of Code No. Critical: None defined. Inspection -_-y_ . .?r- -:.i:z*j-t-m , -: L-J -. ?:;.; and non-man
42、datory (indicated by drawinc or Federal Stock :JumUer). !.lhcn an inspection equipment list references manda- Cory Army designs, the contracttlr shall comply with, and use these designs accordingly. The contractor may, however, in connection with non-mandatory dcsigns, and with the approval of the G
43、overnment, design alterriate inspection equipment or use comparable commercial equipnent to facilitate his opera- tions. Such contractor preparec designs or commercial equip- ment selections must be, approvec by the Government prior to fabrication or procuring of the equipment. Designs shall be subm
44、itted for approval as specified in 6.3.5. of inspection equipment for which the Government has assigned design responsibility to the contractor. Contractor designs shall be supported by detailed drawings which depict all infor- mation riecessary to completely “abricate, calibrate and operate an item
45、 of inspection equipment This requires that the neces- sary views, diinensions, materials, finish, notes, operating and calibration instructions be properly depicted in accordance with approved practices to the extent that further calculation or clarificatiun will not be required. Unless otherwise s
46、peci- f-cd, contractor designs may be developed on the format the contractor normally employs in his equipment design procedure provfded such famat reflects tira detail and inhrinatiori speci- fied above, subject to the following controls: All submitted contractor designs shall conform to MIL-D-1000
47、, Category E, Form 2, Legibility and reproducibility shall permit conven- tional making of clearly understandable, high contrast repro- ductions. Contractors shall submit one copy of final designs as a rolled set. Designs shall be submitted for approval as specified in 6.3.5. , L.+. ,- - The contrac
48、tor need probide no design when an Army do- 6.3.4 Contractor designs. - Contractor Cesigns are designs 11 , Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - - - - - MIL-C-60459 13 W 9997906 0338b75 7 M :.I,L-C -5UQ59 (:lu) desigcs shall contain a r
49、eference to the applicable five digit 6.3.5 Submissior, of contractor- designs. - All. submitted Coe Xurnber contained in Sectior, 4 of this specification. Unless other:crise specified on the- ZL, all desigris of equipment for in- spection of defects classified as critical and major shall be stibmitted for approval to the Commanding Officer, Picatinny Ar- senal, ATTN: SXJPA-ND4. Al
