NAVY MIL-P-21904 A-1977 PARACHUTES FOR UNDERWATER MINES GENERAL SPECIFICATION FOR《用于水雷的降落伞通用规则》.pdf

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1、MIL-P-2LSOLlA 13 7797706 030L77b 4 M 11 March 1977 SUPERSEDING MIL-P-o (WP) 21 Januq 1959 (see 6.3) MILITARY SPECIFICATIOTN This specification is approved for use by the Naval Sea Systems Corranand, Department of the Navy, and is available for use by all Departments and Agencies of the Deparbrient o

2、f Defense. 1. SCOPE 1.1 Scope. This specification establishes the general requirements for the production of parachutes for use with underwater mines. 1.2 Classification. Parachutes covered by this specification shall be of the follming types (see 6.2 and 6.3): Type III - Ring Slot Typ IV - Cross Ty

3、peV -Ribbon 2. AJ?PLIcABLE Jxxmmncs 2.1 Issues of documents. The following documents of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein. SPECIFICATIONS PPP-B-6 O1 PPP-B-6 21 PPP-B-636 Box, wood, Cleated Plyw

4、ood Box, Wood, Nailed and Iack Corner Box, Shipping, Fiberboard I i Beneficial cmts (recomnendations, additions, deletions) and any pertinent data which may be of use in improving this docmsnt . should be addressed to : Camanding Officer , Naval Ordnance Station, 1 Standardization Division (611), In

5、dian Head, M. 20640, by using I the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document, or by letter. r- -. , - _ - THIS CONTAiNS FSC 1350 - - - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IH

6、S-,-,-_. MIL-P-ZLSOLIA 33 m 7777706 0303777 b MIL-P-OA (OS) MILITARY MIL-P-116 MIL-B-131 Preservation-packaging, mthcds of Barrier grease or foreign matter. Parachute is extensively repaired. Procedures and Disposal Examination of records; reject fabric. Certificate of Compliance; reject material an

7、d unserviceable parachute. Reject defective parachute. Reject defective parachute. Reject defective parachute. Reject defective parachute. Reject defective parachute. Examine on illuminated glass top table; reject defective parachute. Reject defective parachute. Reject defective parachute. Reject de

8、fective parachute. Reject defective parachute. Reject defective parachute. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-22704A 23 W 7799906 0302782 T = MIL-P-219 04A (OS) 5.1.1.2 Unit packaging. Each parachute shall be individually package

9、d Method IA-15 (less preservative application) -_ conforming to the requirements of MIL-P-116. 5.1.1.2.1 Unit container. The unit container shall be fabricated in accordance with the requirements of PPP-B-636, Style optional, Class domestic, variety SW, 275 lbs. minimum bursting strength. The indivi

10、dually packaged parachute shall be placed in a unit container which shall be inserted into a water- vaporproof bag, fabricated from Class 1 barrier material conforming to the requirements of MIL-B-131, and closure heat sealed. (Prior to inserting unit container into the water- vaporproof bag, all co

11、rners of the container shall be blunted). 5.1.2 Level B. (Not applicable) 5.1.3 Level C. 5.1.3.1 Unit packaging. Each parachute shall be individually packaged Method III, in accordance with the requirements of MIL-P-116. 5.2 Packing. 5.2.1 Level A. 5.2.1.1 Exterior containers. Parachutes, prepared a

12、s specified above for Level A protection, shall be packed in multiples, in a Class weather-resistant, variety SW, Style optional, fiberboard box conforming to the requirements of PPP-B-636, W5c compliance symbol. 5.2.1.2 Overpacking. Each fiberboard carton, containing a multiple of packaged parachut

13、es, shall be overpacked in an overseas type wood-cleated plywood box or in a type 2, 2-1/2, 3 or 4 nailed wood box conforming to the requirements of PPP-B-601 or PPP-B-621, respectively. 5.2.1.3 Lumber. When nailed wood boxes are used, lumber shall be of one (1) inch nominal thickness, surfaced on b

14、oth sides, conforming to Groups I, II, or III woods of box specification. The gross weight in a given shipping container shall not exceed one-hundred (100) pounds. 5.2.2 Level B. (Not applicable) 5.2.3 Level C. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license fr

15、om IHS-,-,-MIL-P-23704A 13 7777906 0303783 Y-I MIL-P-2 19 O 4A (OS ) 5.2.3.1 Shipping Containers. Parachutes shall be packed in a manner which will provide protection from damage during direct shipment from the contractor or supply source to the first receiving activity for immediate use. The type o

16、f containers used shall conform to applicable carrier rules and regulations. 5.3 Marking. 5.3.1 Normal markings. In addition to any special marking required by the contract or order, all container markings shall be in accordance with MIL-STD-129. 5.4 Government procurements. Unless otherwise specifi

17、ed in the contract or order, the parachutes covered by this specification shall be delivered in appropriate Parachute Packs as stipulated by the Naval Sea Systems Command. When there is direct purchase by the Government of subject parachutes, the above packaging requirements shall be required. 6. NO

18、TES 6.1 Intended use. Parachutes produced in accordance with this specification are intended for use with underwater mines. 6.2 Ordering data. Procurement documents should specify the following: a. - Title, number and date of this specification b. - Type of parachute required (see 1.2) c. - Applicab

19、le lists of drawings (see 3.1.1) d. - Quantity of parachutes required e. - Whether first article sample required (see 3.1.3 f. - Name and address of activity to inspect the g. - Level of packaging and packing required (see 5.4) and 6.4) first article 6.3 Correlation data. Types I and II parachutes o

20、f MIL-P-21904(WP) are obsolete and have been dropped from MIL-P-21904A(OS). to this specification to preserve the continuity of designations and to prevent misinterpretations in parachute documentation, drawings and procurements. Types IV and V designations have been added 8 Provided by IHSNot for R

21、esaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-23SOqA 13 W 797970b 0303784 3 6;4 First article. Submission of the first article sanp-le may be waived by the procuring activity (see 6.2 e) when the manufacturer is prducing the parachutes for prior contracts. Productio

22、n procedures and facilities must not be changed (as required in 3.1.3) vhen the first article sample is waived. and approved under the appropriate provisions of 7-104.55 of the Armd Services Procurenient Regulations. prcduction sample and should consist of ten iniits. The contracting officer should

23、include specific instructions in all procurmt insmnts regarding arrangmts for examinations, tests, and approval of the first article. men a first article sample is rqure it will be tested The first article should be a pre- 6.5 Changes from previous issue. asterisks are not used in this - _ rwkion to

24、 identify changes with respsct to the previous issue due to the extensiveness of the changes. custodian: Navy - OS Preparing activity: Navy - OS Project 1350-NO33 U. S. GOVERNMENT PRINTING OFFICE: 1977-703-020/2168 9 ,. i . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-

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