1、i MIL-A-38202C 37 9999906 0395423 9 MIL-A-3820k (USAF) 7 March 1972 SUPERSEDING 13 August 1971 MIL-A-38202B (USAF) MILITARY SPECIFICATION AIRCRAFT ARRESTING SYSmM BAK-l2A/E32A; PORTABLE , ROTARY FRICTION 1. SCOPE * 1.1 rotary friction, aircraft arresting systems: This specification covers the follow
2、ing emergency types of portable, BAJC-l2A/E32A - Single absorber, 1,200 foot runout BAK-l2A/E32A - Dual absorber, 1,200 foot runout. 2. APPLICABLE DOCUMENTS 2.1 specified herein. The applicable issues of the governmental documents shall be the issues in effect on date of invitation for bids or reque
3、st for proposal. The applicable issues of the nongovernmental documents shall be those which are available in the files of the procuring activity and made a part of the invi- tation for bids or request for proposal. The following documents form a part of this specification to the extent SPEC IF ICAT
4、 IONS Federal ?IC-v- 12 1 UU-T-8 1 PPP-B-60 1 PPP-B-621 PPP-F-320 PPP-P-40 PPP-T-60 Mi 1 it ary MIL-C- 104 MIL-P- 116 MIL-P-5 14 Varnish, Spar , Water -Res ist ing Tags, Shipping and Stock Box, Wood, Cleated-Plywood Box, Wood, Nailed and Lock-Corner Fiberboard; Corrugated and Solid, Sheet Stock (Con
5、tainer Grade) and Cut Shapes Packaging and Packing of Hand Tools Tape, Pressure-Sensitive Adhesive, Waterproof , for Packaging Crates, Wood; Lumber and Plywood Sheathed, Nailed and Bolted Preservation, Methods of Plates, Identification, Instruction and Marking, Blank FSC 1710 .9i Licensed by Informa
6、tion Handling ServicesProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-38202C 17 9999906 0195424 O = MIL-A-38202C (USAF) .-_ MIL-C-3774 MIL-G-8402 MIL-E-10062 MIL-E-112 75 MIL-E - 175 55 MIL-B-26195 MIL-W-38461 STANDARDS Military MIL-STD-12 MIL-
7、STD- 17 MIL-STD-100 MIL-STD-129 MIL-STD-130 MIL-STD-143 MIL- STD- 163 MIL-STD-794 MIL-STD-808 MIL-STD-810 MIL-STD-82 6 MIL-STD-831 MIL-STD-889 MIL-STD-1186 DRAWINGS U. S. Air Force Crates, Wood; Open, 12,000- and 16,000-Pound Capacity Gages, Pressure, Dial Indicating, General Specification for Engin
8、es; Preparation for Shipment and Storage of Engine, Gasoline, Industrial Type, General Specification for Electronic and Electrical Equipment, Accessories and Repair Parts, Packaging and Packing of Boxes, Wood-Cleated, Skidded, Load-Bearing Base Webbing, Nylon, Aircraft Arresting Abbreviations for Us
9、e on Drawings, Specifications, Standards, and in Technical Documents Mec han ica 1 Symbo Is Engineering Drawing Practices Marking for Shipment and Storage Identification Marking of U. S. Military Property Standards and Specifications, Order of Precedence for the Selection of Steel Mill Products, Pre
10、paration for Shipment and Storage Parts and Equipment, Procedures for Packaging and Packing of Finishes, Protective, and Codes, for Finishing Schemes for Ground and Ground Support Equipment Environmental Test Methods Electromagnetic Interference Test Requirements and Test Methods Test Reports, Prepa
11、ration of Dissimilar Metals Cushioning, Anchoring, Bracing, Blocking and Waterproofing; With Appropriate Test Methods 62B35556 Wire Rope Assembly, Single Leg, Pendant, Aircraft 64C33478 Loading Arbor 64C33 5 18 Loading Tube 6601751 Connector, 8-1/2-inch Tape, BAK-12 Arresting Barrier, Assembly of 67
12、F2011 Aircraft Arresting System EAk-12/E32A, Permanent Surface Type, 67F2012 Aircraft Arresting System, BAK-l2/E32A, Pit Type Arresting Barrier Absorber Installation of, Typical Installation of, Typical 2 . .; Licensed by Information Handling ServicesProvided by IHSNot for ResaleNo reproduction or n
13、etworking permitted without license from IHS-,-,-. - MIL-A-38202C (USAF) (i . - - * 68F211 Aircraft Arresting System Dual BAK-l2/E32A - Pit Type, * 71236 Aircraft Arresting System Dual BAK-l2/E32A - Permanent Installation of, Typical Surface Type, Installation of, Typical Naval Air Engineering Cente
14、r (Code 80020) 515053 Pendant Assembly, 1-1/4 Dia. Nonrotating Wire Rope E. W. Bliss Company (Code 80336) 152 -A- 1092 152-A-1093 52-B-624-2 52-B-1242 52-B-1244 52-C-963-1 524-1246-1 52-C- 1247-1 524-1248-1 52-D-109-1 52-D-380-1 52-D-642-1 52 -W-l766 52-W-2080-1 52-W-2081-1 * 52-W-2252-1 52-W-2288-1
15、6 52-W-2291-2 52 - W-22 95 - 1 Utility Pump Assembly Utility Hose Assembly Bearing Removal Tool Reinstallation Kit: Stake Driving Tool Modification - Engine Base Accumulator Chargng Kit Brake Bleed Kit Synchronizing Kit Tape Brush Assembly Deflector Sheave Assembly Tape Brush and Mounting Assembly G
16、eneral Arrangement BAK-12 Arresting System (Soil Surface) Deck Sheave Assembly Tape Connector Assembly Deck Sheave, Left Hand Synchronizing Chain Rol ler Arresting Engine Assembly Fairlead Unit Assembly (Copies of specifications, standards, drawings, and publications required by suppliers in connect
17、ion with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer,) 3. REQUIREMENTS 3.1 Preproduction. This specification makes provisions for preproduction testing . * 3.2 Components. The aircraft arresting system shall consist of the f
18、ollowing major components: I -Energy absorber Purchase element tapes Purchase element connectors 3.8 3.9 3.10 3 Licensed by Information Handling ServicesProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-! MIL-A- 38 2 02C (USAI?) Hook cable 3.11 Fair le
19、ad unit as semb 1 ies 3.12 Runway edge sheaves 3.13 Deflector sheave assemblies 3.14 Fairlead tubes and couplings 3.15 Tape brush assembl ies 3.16 Tape connector adapter assembly (dual BU-12 only) 3.17 Special service tools and kits - 3.18. 3.3 Selection of standards and specifications. Standards an
20、d specifications for necessary commodities and services not specified herein shall be selected in accordance with MIL-STD-143. * 3.4 Materials. Materials shall conform to applicable specifications and shall be as specified herein and on applicable drawings. Materials which are not covered by specifi
21、cations, or which are not specifically described herein, shall be of the best quality for the purpose intended. 3.4.1 Metals. Corrosion-resistant metals shall be used in the construction of the aircraft arresting system wherever protective finishing is not practical. Nonexposed lubricated metal part
22、s and surfaces need not be given a protective coating and need not be corrosion resistant. Protective coatings shall be as specified herein. 3.4.2 Dissimilar metals. Insofar as practicable, the use of dissimilar metals in contact with each other shall be avoided. However, metal plating or metal spra
23、ying of dissimilar base metals to provide similar or suitable abutting surfaces will be permitted. The use of dissimilar metals separated by insulating material will be permitted. Dissimilar metals are defined in MIL-STD-88 9. 3.5 Design. The aircraft arresting system shall be a velocity-sensitive,
24、rotary friction type based on the split energy absorber concept. The energy absorber units shall be sited on opposite sides of the runway with no require- ment for cross-runway interconnection other than the hook cable. The aircraft arresting system shall be designed and equipped to provide a normal
25、 system runout of 1,200 feet. It shall also be capable of being programmed for a 950-foot system runout. The aircraft-arresting system shall be designed for soil surface, concrete pad, or permanent-pit-type installation. The components for each type of installation shall be provided as specified on
26、the installation drawing (see 6.2). The procuring activity shall specify the following for each site where the aircraft arresting system is to be used (see 6.2): a. vpe of installation b. Length of hook cable 4 Licensed by Information Handling ServicesProvided by IHSNot for ResaleNo reproduction or
27、networking permitted without license from IHS-,-,-I MIL-A-3202C 17 777770b OL75L127 b MIL-A-38202C (USAF) C. Span between runway edge sheaves (see 6.3) d. (see 6.3) e. When only a 950-foot system runout is required, and if a l-inch-diameter hook cable is allowed for this site Split distance between
28、the runway e.dge sheaves and energy absorber * f. When dual BAK-12 is to be used The requirements of the installation and component drawings and all details thereto (see 6.2) apply as requirements of this specification with the exceptions and additions specified herein. 3.5.1 Soil surface installati
29、on. The design of the aircraft arresting system shall permit installation on a graded soil surface using aluminum stakes and deadman anchors. Arresting systems for soil surface installations shall be in accordance with Drawing 52-W-1766 and shall consist of at least the following major components, a
30、rranged essentially as shown thereon. Additional components , including hardware , required to complete the aircraft arresting system for this particular type installation shall be as shown on Drawing 52-W-1766. Component See Paragraph Energy absorber 3.8 Purchase element connectors 3.10 Hook cable
31、3.11 Fair lead unit assemb 1 ies 3.12 Special service tools and kits 3.17 Purchase element tapes 3.9 Number Required 2 2 2 1 2 1 set; 3.5.1.1 Reinstallation kit. When specified (see 6.2) , a reinstallation kit shall be provided for each soil surface installation. The kit shall contain the anchoring
32、hardware for the absorber and Fairlead unit assembly. The kit shall permit quick removal and rein,stallation of the arresting system by avoiding the need to dig up anchoring hardware. Necessary hardware is shown on Drawing 52-B-1242. 3.5.1.2 Special expeditionary installation kits. For aircraft arre
33、sting systems intended for expeditionary type soil surface installations, it is anticipated that spare parts and small tools will not be readily available to the installing and operating crews as they would be at established airbases. When specified (see 6.2), a kit containing particular spare parts
34、 and tools 5 Licensed by Information Handling ServicesProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-38202C 17 = 9Ob 0195428 8 = MIL-A-38202C (USAJ?) shall be provided for those installations. The kit shall include at least a hand portable com
35、pressed nitrogen bottle complete with regulator, pressure gage, and fittings compatible with the BAK-12 accumulator. The compressed gas is needed to pressurize the static pressure system which functions to main- tain a light pressure (eg, 175 +10 psi) on the brakes and thereby holds the pretension l
36、oad in the hook cab7e when the aircraft arresting system is in the battery position. Minimum size of bottle to be provided shall be 0.1 cubic foot for 2,000 psi or 0.25 cubic foot for 500 psi. The kit also shall contain extra spare parts, special or extra tools, and such other items as specified (se
37、e 6.2). (Drawing 52-C-1246 may be used for information purposes only .) * 3.5.2 Installation, permanent, surface type. The design of the aircraft arresting system shall be adaptable to installation on a simple concrete slab poured at the time of installation. Arresting systems for permanent surface
38、type installations shall be in accordance with Drawing 67F2011 for single and Drawing 71236 for dual BAK-12 and shall consist of at least the following major components, arranged essentially as shown thereon. Additional components , including hardware , required to complete the aircraft arresting sy
39、stem for this particular type installation shall be as shown on Drawings 67F2011 and 71236. Component Energy absorber Purchase element tapes Purchase element connectors Hook cable Fairlead unit assemblies (special Runway edge sheaves Fairlead tubes (if required) Tape brush assembl ies Tape connector
40、 adapter assembly (dual Special service tools and kits installations only) BAK-12) See Paragraph 3.8 3.9 3.10 3.11 3.12 3.13 3.15 3.16 3.17 3.18 Number Required 2 2 2 As specified 2 1 set. * 3.5.3 Installation, permanent, pit type. The design of the aircraft arresting system shall be adaptable to in
41、stallation in an underground concrete pit having a top which is substantially flush with the surrounding terrain. Arresting systems for pit-type installation shall be in accordance with Drawing 67F2012 for single and Drawing 68F211 for dual BM-12 and shall consist of at least the following major com
42、ponents, arranged essentially as shown thereon. Additional components, including hardware, required to complete the arresting system for this particular type installation shall be as shown on Drawings 67F2012 and 68F211. ! 6 I Licensed by Information Handling ServicesProvided by IHSNot for ResaleNo
43、reproduction or networking permitted without license from IHS-,-,-MIL-A-38202C L7 7777706 OL75LI27 T m MIL-A-38202C (USAF) Component Energy absorber Purchase element tapes Purchase element connectors Hook cable Runway edge sheaves Deflector sheaves Fair lead tubes Tape brush assemblies Tape connecto
44、r adapter assembly (dual BAK-12 only) Special service tools and kits See Paragraph 3.8 3.9 3.10 3.11 3.13 3.14 3.15 3.16 3.17 3.18 Number Re qu ired 2 2 2 1 2 4 2 2 1 set. As specified * 3.5.4 Reliability. The aircraft arresting system shall have a MCBF of 76 consecutive average arrestments, excludi
45、ng replacement of purchase element tapes, absorber brake, and hook cable as needed. Reliability shall be a minimum of 97 percent at a confidence factor of 0.90 (see 6.3). Stipulation of average arrestments shall be interpreted to include any combination of aircraft weight and speed equal to approxim
46、ately 40 x lo6 foot-pounds for single 9 O-foot runout, 55 x lo6 foot-pounds for 1,200-foot runout, and 100 x 10 foot-pounds for dual BAK-12. 2 3.5.5 Maintainability. The aircraft arresting system shall be designed and constructed as specified herein and to provide the following: a. specified herein.
47、 Minimum number of parts consistent with reliability and performance b. location of trouble sources, and maintenance including servicing. Where practical, parts and components shall be located or positioned for rapid and simple inspection and recognition of excessive wear or potential failure. c. Pe
48、rmit adjustments, servicing, replacement of parts and components, and other maintenance with minimum disturbance to other equipment parts or components. Parts and components shall be located for ample and rapid access unless performance or reliability will be appreciably degraded by the accessible l
49、ocation. In performing maintenance, if engineering reasoning or data determines that physical or visual interference between items cannot be avoided, the item predicted to require the most maintenance shall be located for best accessibility. Minimum amount of training and time necessary for assembly, disassembly, d. Permit maintenance with general-purpose tools and equipment normally available commercially. Use of special-purpose tools and equipment shal
