1、/flIL-S-3b3B Lb 777770b 020b27Li 7 data which may be of use in improving this document should be addressed to: the Engineering Division, San Antonio ALC/MMEDO, Kelly AFB, TX 78241 by 1 V-F- 1 06 QQ-A-2 50 PPP-B-63 6 1 JUNE 1987 SUPERSEDING MIL-S-83863A(USAF ) 3 Oct 1978 MILITARY SPECIFICATION SPACER
2、 ASSEMBLY, SURVIVAL CONTAINER PARACHUTE SUPPORT -k This specification is approved for use within the Department of the Air Force and is available or use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This is a general specification for the parachute support assembl
3、y used on rigid seat style survival containers. * 2. APPLICABLE DOCUMENTS * 2.1 Government documents. * 2.1.1 Specifications and standards. The following specifications and standards form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of these doc
4、uments shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation. SPEC IF ICAT ION S FEDERAL Fastener, Slide, Interlocking. Aluminum and Aluminum Alloy Plate and Sheet, General Specification for. B
5、oxes, Shipping, Fiberboard. MILITARY MIL-P-116 Preservation, Methods of. MIL-C-20696 Cloth, Coated, Nylon, Waterproof. MIL-P-26514 MIL-T-43636 Thread, Aramid. MIL-C-43842 Cloth, Oxford, Aramid. MIL-T-83 193 Thread, Aramid, Spun Staple. Polyurethane Foam, Rigid or Flexible for Packaging. Provided by
6、IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STANDARDS FEDERAL FED-STD-191 Textile Test Methods. FED-STD-751 Stitches, Seams, and Stitchings. El ILI T ARY DOD-STD-100 Engineering Drawing Practices. MIL-STD-129 Marking for Shipment and Storage MIL-STD-13 O Ide
7、ntification Marking of US Military Property, MIL-STD-143 Standards and Specifications, Order of Precedence, for the Selection of. MIL-STD-2073/1 DOD Materiel Procedures for Development and Appli- cation of Packaging Requirements. MS2 1042 Nut, Self-Locking, 450 Deg. F, Reduced Hexagon, Reduced Heigh
8、t, Ring Base, Non-Corrosion Resistant Steel. Steel, Cadmium Plated, UNF-2A. MS35207 Screw, Machine-Pan Head, Cross-Recessed, Carbon * 2.1.2 Other Government drawings. The following other Government drawings form a part of this specification to the extent specified herein. Unless :- otherwise specifi
9、ed, the issues shall be those in effect on the date of the solicit at ion. DRAWINGS AIR FORCE 66C25337 66C25338 6 6D 25 33 9 Mounting Plate, Spacer, Parachute Support. Foam Insert, Spacer, Parachute Support. Spacer Assembly, Parachute Support, Survival Container. * (Copies of specifications, standar
10、ds, drawings, publications, and other Government documents required by contractors in connection with specific acqui- sition functions should be obtained from the contracting activity or as directed by the contracting activity.) * 2.2 Other publications. The following document forms a part of this s
11、peci- fication to the extent specified herein. Unless otherwise specified, the . issues of the documents which are DOD adopted shall be those listed in the : issue of the DODISS specified in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS shall be the i
12、ssue of the non- government documents which is current on the date of the solicitation. AMERICAN SOCIETY FOR TESTING AND MATERIAL (ASTM) ASTM D-3951 . Packaging, Commercial. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-83863B (USAE (Applic
13、ation for copies of ASTM publications should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) HQ DPSC Handbook 4120.1 List of Armed Services Colors for Clothing, Equipage and Textiles. Defense Personnel Support Center 2800 South 20th Street P
14、hiladelphia, PA 19001 (Application for copies should be addressed to the above mentioned address.) UNIFORM CLAS.SIFICATION COMMITTEE, AGENT Uniform Freight Classification (Application for copies should be addressed to the Uniform Classification Committee, Room 1106, 222 South Riverside Plaza, Chicag
15、o, IL 60606.) * 2.3 Order of precedence. In the event of a conflict between the text of this specification and the references cited herein (except for associated detail specifications, specification sheets or MS standards), the text of this specification shall take precedence. Nothing in this specif
16、ication, however, shall supersede applicable laws and regulations unless a specific exemption - has been obtained. 3. REQUIREMENTS 3.1 First article. When specified, in the contract or purchase order, the contractor shall furnish a first article for testing and approval (see 4.3, 6.2 and 6.4). 3.2 S
17、election of specification and standards, specifications and standards for necessary commodities and services not specified shall be selected in accordance with MIL-STD-143. 3.3 Materials. Materials shall conform to applicable specifications and shall be as specified herein and on applicable drawings
18、. Materials which are not covered by specifications, or which are not specifically described herein, shall be of the best quality, of the lightest practicable weight and suitable for the purpose intended. 3.3.1 Nonmetallic materials. The nonmetallic materials used shall be light in weight and shall
19、be strong enough to withstand constant flexing of the fiber or weave from the weight of a parachute assembly. Any nonmetallic material which has a tendency to tear, harden or stretch with use shall not be used. 3.3.2 Metals. Metals shall be of the corrosion-resistant type or suitably treated to resi
20、st corrosion due to fuels, salt spray, or atmospheric conditions likely to occur in storage or normal service. against such corrosion in a manner that will in no way prevent compliance with the performance requirements of this specification. The use of any protective treatment that will crack, chip
21、or scale with age or extremes of atmospheric conditions shall be avoided. Metals shall be protected 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-LS-83b3B Ib W 777770b 020b277 L1 m MIL-S-83863B(USAF) 3.4 Design and construction. The parachute sup
22、port spacer assembly shall have a basic cover with slide fastener, a mounting plate with three screws and nuts, and the applicable number of foam inserts as specified on 66D25339. The spacer assembly shall be complete when foam inserts and mounting plate are in place within the basic cover and the s
23、crews and nuts are fastened in their proper place. The spacer assembly shall be flame proof. 3.4.1 Basic cover. The material for the basic cover shall conform to MIL-C-43842 and shall be sage green, color number 1565 per HQ DPSC Handbook 4120.1 and shall be made according to 66C25338 and 66D25339. m
24、aterials that may be used shall conform to MIL-C-20696, type III, class 3 or 5 except coated one side only with a fire retardant added. Alternate 3.4.2 Slide fastener. The slide fastener shall be brass, type I, style 7, size M, or equivalent, as specified in V-F-106. The length of the fastener shall
25、 be in accordance with 66D25339 for the particular spacer assembly. slide fastener shall be attached to the cover according to 66D25339. The 3.4.3 Foam insert. The foam insert shall be a polyurethane sheet or equivalent, in accordance with MIL-P-26514, type I, class 2 and shall be 1.69 inches in thi
26、ckness. The foam insert shall be constructed in accordance with 66C25338 for the particular spacer assembly. 3.4.4 Thread. The thread shall be nylon thread as specified in MIL-T-83193 and shall be of Che same color as the basic fabric. An alternate thread that may be used shall conform to MIL-T-4363
27、6, type I, size F and be of the same color as the basic fabric. 3.4.5 Stitching. Stitching shall be type 301 with not less than 8 or more than 10 stitches per inch in accordance with FED-STD-751. . The ends of stitch- ing shall be back-stitched not less than 1/2 inch. 3.4.6 Mounting plate. The mount
28、ing plate shall be aluminum alloy 2024, 0.060 inch thick, temper T-4, in accordance with QQ-A-250/4 and constructed in accordance with 66625337 for the particular spacer assembly. 3.4.7 Screws and nuts. The screws shall be in accordance with MS35207-263 and the nuts shall be in accordance with MS210
29、42-3. The screws and nuts shall be attached according to 66D25339. 3.5 Performance. 3.5.1 Compression loading. The spacer assembly shall pass the required dimension testing as specified on 66D25339 when a 40 pound weight is applied evenly across the top surface of the spacer assembly for 5 minutes.
30、3.5.2 Foam insert recovery. The foam insert shall recover from the com- pressionloading to its original shape within the basic container within two minutes after removal of the weight. 3.5.3 Mounting. The spacer assembly shall be mounted on the respective survival kit according to 66D25339 when a 40
31、 pound weight is applied evenly across the top surface of the spacer assembly for 5 minutes. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-b MIL-S-83b3B Lb I 7777906 flZOb27 b 8 MIL-S-83863B(USAF) 3.5,4 Flame proofness. All materials used for the
32、 spacer assembly shall be self-extinguishing and shall resist igniting by an open flame. 3.6 Interchangeability. All parts having the same manufacturers part number shall be functionally and dimensionally interchangeable. number requirements of DOD-STD-100 shall govern changes in the manufacturers p
33、art number. The drawing 3.7 Identification of product. The parachute support spacer assembly shall be marked with the following information in accordance with MIL-STD-130. The marking shall be permanently affixed or impregnated, centered from top to bottom in a conspicious location on the front surf
34、ace of the assembly as specified on 66D25339 in letters 0.25 inch in height and of a suitable con- trasting color. *Manufacturer s name and code *Manufacturers part number Parachute support (spacer assembly) *AF part number usAl? Wontract number NOTE: (*) Manufacturer shall include the applicable in
35、formation. 3.8 Workmanship. The parachute support spacer assembly shall be uniform in quality and shall be free from irregularities, defects or foreign matter which could adversely affect safety, performance, reliability or durability. 3.9 Reclaimed materials. The use of reclaimed materials shall be
36、 encouraged to the maximum extent possible. 4. QUALITY ASSURANCE PROVISIONS * 4.1 Responsibility for inspection. Unless otherwise specified in the con- tract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise s
37、peci- fied in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. reserves the k-ight to perform any of the inspections set forth in the specifi- cat
38、ion where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. The Government * 4.1.1 Responsibility for compliance. All items must meet all requirements of sections 3 and 5. The inspection set forth in this specification shall become a part of th
39、e contractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of assuring that all products or supplies submitted to the Government for acceptance comply with all require- ments of th
40、e contract. submission of known defective material, either indicated or actual, nor does it commit the Government to acceptance of defective material. Sampling in quality conformance does not authorize 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
41、,-.- -.-I MIL-S-83863B 16 M 7797706 0206277 8 e ML-S-83863B(USAF) I 4.4.1 Individual tests. Each spacer assembly shall be visually inspected for defects according to Table I. Three minor defects out of a lot of 25 samples, or fraction thereof, consti- tutes rejection, Any major defect constitutes re
42、jection, 4.2 Classification of inspection. The examination and testing of the para- chute support spacer assembly shall be classified as follows: , I 4.4.2 Sampling tests. One spacer assembly out of a lot of 25 or fraction thereof, shall be tested according to 4.5.2. a. First article inspection. Fir
43、st article inspection consists of exam- ination tests performed on a sample which is representative of the production item, after award of a contract to determine that the pro- duction item meets the requirements of this specification. b. Quality conformance inspection. Quality conformance inspectio
44、n con- sists o examinations and tests performed on individual products or lots to determine conformance of-the products or lots wiih the requirements set forth in this specification. 4.3 First article inspection. When required (see 6.2 and 6.61, the first article inspection of the spacer assembly sh
45、all consist of all examinations and tests specified herein. 4.4 Quality conformance inspection. Quality conformance inspection shall consist of the following examinations and tests: 4.4.3 Rejection and retest. When an item selected from a production run fails to meet the specification, no items stil
46、l on hand or later produced shall be accepted until the extent and cause of failure have been determined and appropriately corrected. The contractor shall explain to the Government representative the cause of failure and the action taken to preclude recur-:. rence. After correction, all of the tests
47、 shall be repeated. 4.5 Test methods. I 4.5.1 Visual examination. The parachute support spacer assembly shall be examined according to Table I. Three minor defects out of a lot of 25 spacer assemblies, or fraction thereof, constitutes a major defect. Any major defect shall constitute rejection. 6 Pr
48、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-83b3B Lb I 774770b 0206280 Y TABLE I. Classification of defects for visual examination. MAJOR 1. Dimensions not meeting specifi- cations within tolerance limits. 2. Basic cover snagged or torn, stit
49、ching loose or missing , insert missing or not conform- ing to fit, slide fastener missing. 3. Slide fastener damaged or not operating properly. 4. Any other impairments or irreg- ularities which might hinder intended use of parachute support spacer assembly. 5. Any materials which do not con- form to the applicable speci- f icat ion. MINOR 101. Identification missing, illegible, or not conform- ing to specifications. 102. Basic fabric soiled or
