1、MIL-A-5034B 10 777790b 0272173 LI W5 -3“;7-3 7 MIL-A-5 034B SUPERSEDING MIL-A-5034A 29 December 1950 2 November 1979 MILITARY SPECIFICATION ADAPTER, BOMB RACK, 30-INC, AERO 1A This specification is approved for use by all Departments and Agencies of the Department of Defense. 1, SCOPE 1.1 Scope. Thi
2、s specification establishes the requirements for the manufacture and inspection of a bomb rack adapter. The adapter gives a 355.6 millimeter (14 inch) suspension bomb rack a 762 millimeter (30 inch) suspension capability allowing the bomb rack to carry and release stores weighing from 45 to 1,814 ki
3、lograms (100 to 4,000 pounds). The test limits in this specification define minimum acceptable capabil- ites . 2. APPLICABLE DOCWNTS 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 th
4、e extent specified herein. SPECIFICATIONS THIS DOCUMENT CONTAINS MILITARY MIL-T-7743 -Testing, Store Suspension and Release Equipment; General Specification for MIL-H-85042 -Hooks, Bomb Rack, General Specification for Beneficial comments (recommendations, additions, deletions) and any pertinent data
5、 which may be of use in improving this document should be addressed to: Engineering Specifications and Standards Department (Code 93) Naval Air Engineering Center, Lakehurst, N.J. 08733 by using the self-addressed Standardization Document Improve- ment Proposal (DD Form 1426) appearing at the end of
6、 this document or by letter. FSC 1095 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-100 -Engineering Drawing Practices MIL-STD-129 MIL-STD-130 -Identification Marking of U.S. -Marking for Shipment and Storage Military Property MIL-STD-143 -
7、Standards and Specifications, Order of Precedence for the Selection of MIL-STD-794 -Parts and Equipment, Procedures for Packaging and Packing of MIL-STD-831 -Test Reports, Preparation of (Copies of specifications, standards, drawings, and publications required by suppliers in connection with specifi
8、c procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) Order of precedence of specifications and stiandards. Should a conflict exist between any requirement in this specification and any requirement in the applicable documents referenced he
9、rein, the requirements of this specification shall take precedence over the referen- ced (applicable) document. 3. REQUIRE;MEMTS First article. The adapters furnished under this specifi- cation shall be a product which has been inspected and passed the first article inspection herein (see 4.3). Sele
10、ction of specifications and standards. Specifica- tions and standards for necessary commodities and services nat specified herein shall be selected in accordance with MIL-STD-143. Interchangeability. All parts having the same part . number shall be directly and completely interchangeable with each o
11、ther with respect to installation and performance. drawings, The item identification and part number requirements of MIL-STD-100 shall govern the part number and changes thereto. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.5 Adapter. 3.5.1 Cons
12、truction. The construction of the adapter shall be in accordance with the drawings listed in the data list for the adapter being procured and as specified herein (see 6.2,lf). 3.5.2 Performance. The adapters shall satisfy all performance requirements when subjected to the following inspections in th
13、e order specified in Tables I and II. a. Adapter Inspection (see 4.6.1) b. Lag Time (see 4.6.2a) c. Vibration (see 4.6.2b) d. High-g Release (see 4.6.2) e. Life (see 4.6.2d) f. Shock (see 4.6.2e) g. Static (see 4.6.2f) h, Salt Spray (see 4.6.2g) 3.6 Adapter hooks. The construction and inspection of
14、the adapter hooks shall be in accordance with MIL-K-85042. 3.7 Workmanship. The workmanchip displayed in fabrication and assembly of the adapter shall be such as to assure, within design limitations, the ability of the adapter to meet performance requirements under all applicable environmental condi
15、tions specified herein. Unauth- orized repair, welding, heavy burrs, ar parts assembled by introduction of high stresses not prescribed in the drawings, are typical signs of inferior workmanship and shall be cause for rejection. The standards of workmanship exhibited in the approved first article sa
16、mple, subject to any qualification stated in the governments notice of approval, shall be determinative of the requirements of the contract relative to work- manship. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise speci- fied in the contract, the contractor is re
17、sponsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract, the contractor may use his own or any other facilities suitable or the performance of the inspection requirements specified herein, unless disapproved by the government. T
18、he government Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-5034B LO W 7777706 0292376 T U MIL-A-5034B reserves the right to perform any of the inspections set forth in the specification, where such inspections are deemed necessary to assure
19、that the supplies and services conform to prescribed requirements. 4.2 Classification of inspection. The inspection of the adapters shall be classified as follows: a. First article inspection (see 4.3) b, Quality conformance inspection (see 4.4) 4.3 First article inspection. First article inspection
20、 shall consist of all of the inspections listed in Table I. First article in- spection report format shall be in accordance with MIL-STD-831 (see 6.3). 4.3.1 Sampling for first article inspection. First article adapter samples shall consist of the first three adapters manufactured on contract. The a
21、dapters shall be permanently labeled A, B and C for ease of identification. Failure of the adapters to pass any of the first article inspections shall be cause for rejection (see 6.3). 4.4 Quality conformance inspection. Quality conformance inspection shall consist of the following inspections: a, I
22、ndividual Inspections (see 4.4.1) b. Sampling Inspections (see 4.4.2) Quality conformance inspection report format shall be in accordance with MIL-STD-831 (see 6.3). 4.4.1 Individual inspections. Individual inspections are those inspections conducted on each adapter. Individual inspections for the a
23、dapters are shown in Table II, Group 1. Failure to pass any of these inspections shall be cause for rejection of the adapter. 4.4.2 Sampling inspections. A random sampling of the adapters shall be selected by the procuring activity from each production lot in accordance with Table III and shall be s
24、ubjected to the inspections listed in Table II, Group 1 and Group 2. Group 1 inspections shall be conducted prior to Group 2 inspections. Failure to pass any of these inspections shall be cause for rejection of the entire lot (see 6.3). 4.5 Inspection conditions. Unless otherwise specified, all insp
25、ections shall be performed under the following conditions: a, Room temperature. Room ambient of 25k10C (77518OF) indicated. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-b. C. d. Test temperature. All parts of the test item shall be stabilized at
26、 the specified temperature k2.8OC (t5*F) indicated prior to conducting any tests. Unless otherwise specified, temperature stabiliza- tion will have been attained when the -indicated temperature of the surface of the largest mass of the test item does not change by more than f2.8“C (k5OF) in a period
27、 of 1 hour. Test fixture. The adapter shall be tested utilizing an Aero 65 series bomb rack (or equivalent bomb rack such as BRU-l4/A or BRU-15/A) as the parent rack and other suitable fixtures that symmetrially apply a swaybrace load of no more than 8896 Newtons (2,000 pounds) 2224 Newtons (500 pou
28、nds) per swaybrace pad) in the vertically downward direction. The adapters shall be mounted to the parent rack with bolts and lock nuts. After installation onto the parent bomb rack, the link assemblies of the adap- ters shall be free to move under their own weight in the vertically downward directi
29、on. The adapters shall be swaybraced prior to any tests specified herein that require the release of a store. Test stores. The stores, as referenced herein by weight, shall conform to the following parameters. 1. The 45 kilogram (100 pound) store shall utilize the suspension lugs designated for 1,36
30、1 to 2,268 kilogram (3,000 to 5,000 pound) weight class and shall be spaced 762 millimeters (30 inches) apart. The center of gravity of the store shall be midway between the suspension lugs and 203 millimeters (8 inches) below the hook bearing surface of the suspension lugs. 2, The 453 kilogram (1,0
31、00 pound) store shall utilize applicable suspensibn lugs, spaced 762 millimeters (30 inches) apart. Its center of gravity shall be based on the MK 83 L.D.G.P. bomb. 3. The 1,622 kilogram (3,575 pound) store shall utilize applicable suspension lugs spaced 762 millimeters (30 inches) apart. Its center
32、 of gravity shall be midway between the suspension lugs and 203 millimeters (8 inches) below the hook bearing surface of each suspension lug. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-5034B Adapter inspection. Each adapter shall be inspe
33、cted to ensure that it has been properly assembled and adjusted, and that the workmanship is as specified herein (see 3,7). 4.6.1.1 Qualification by analysis, inspection, and demonstration. All requirements for the adapter not qualified by testing shall be qualified by analysis * inspection or demon
34、strations approved by the procuring activity. 4.6.1.2 Packaging inspection. Each adapter shall be examined to ensure that the preparation for delivery conforms to this specification (see section 5). Additional tests. The adapter shall pass the following tests of MIL-T-7743 as specified, except as mo
35、dified herein. a. Lag Time (see 4.6.2.1) b. Vibration Test (see 4.6.2.2) c. High-g Release (see 4.6.2.3) d. Life Test (see 4.6.2.4) e. Shock Test (see 4.6.2.5) f. Static Test (see 4.6.2.6) g. Salt Spray (see 4.6.2.7) 4.6.2.1 Lag time. Rated voltage shall be applied to the parent bomb rack and the ti
36、me interval between voltage application and the last contact of the bomb lugs from the adapter hooks shall be measured. The lag time for the adapters shall not exceed 0.100 second. The lag time of the adapters shall be determined by irst measuring the lag time of the parent bomb rack using a 453 kil
37、ogram (1,000 pound) store and subtrac- ting this average value from the combined lag time of the adapters and parent bomb rack when used together. The lag time of the adapters shall be determined under the conditions listed in Table IV, 4.6.2.2 Vibration. The adapters and parent bomb rack shall be s
38、ubjected to the following vibration tests. The procedures of MIL-T- 7743 shall be applicable. a. Resonance vibration, search unloaded. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-* MIL-A-5Q3qB 10 W 7799706 O272379 5 MIL-A-5034B b. Destructive v
39、ibration - unlatched and loaded tests. 1. A 453 kilogram (1,000 pound) store shall be utilized during the loaded portion of this test. 4.6.2.3 High-g release. Perform 25 electrical releases by apply- ing rated voltage (28 VDC) to the parent bomb rack. The adapter hooks shall sustain a total vertical
40、ly downward load of 10,676 Newtons (2,400 pounds) (including store weight) during all releases. All releases shall be conducted with the bomb rack and adapter in a horizontal att- itude. The adapters shall release satisfactorily each time and without deformation to any component of the adapter. 4.6.
41、2.4 Life. Perform 500 releases by applying rated voltage (28 VDC) to the parent bomb rack, using a store weight of 1,622 kilo- grams (3,575 pounds). Lag time shall be measured on the 1st to 10th and the 431st to 500th releases. The lag time, as defined in 4.6.2.1 shall not exceed 0.100 second. 4.6.2
42、.5 Shock. The adapters and parent bomb rack shall be subjected to the following shock tests. The procedures of MIL-T-7743 shall be applicable. 4.6.2.5.1 No load. The adapters and parent bomb rack shall be tested once in each direction. 4.6.2.5.2 Yield load. A 1,622 kilogram (3,575 pound) store shall
43、 be mounted on the adapters and the test of 4.6.2.5.1 shall be repeated far each condition shown in Table V. 4.6.2.6 Static loa$. The adapters and parent bomb rack, utiiz- ing a rigid simulated store of negligible weight (91 kilograms, 200 = pounds maximum) shall be subjected to the loads specified
44、in Table VI. The loads shall be applied about the center of gravity of the store. The center of gravity shall be midway betwe-en the suspension lugs and 203 millimeters (8 inches) below the hook bearing surface of the suspen- sion lugs. Upon completion of the tests shown in Table VI, the adapters ar
45、e to be tested to the ultimate load of 300,255 Newtons (67,500 pounds), applied vertically downward. 4.6.2.7 Salt spray. The adapters shall be placed in a salt spray chamber with the link assemblies in the free position. Upon completion of the exposure period, the adapters shall be installed on a pa
46、rent bomb rack and a 45 kilogram (100 pound) store shall be latched into the adapter. The adapters shall then be allowed to dry for a mini- mum of 48 hours. The store shall be electrically released by applying rated voltage to the parent bamb rack. The lag time, as defined in 4.6.2.1, shall not exce
47、ed 0.100 second. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-A-5034B 30 9799906 0292380 II I MIL-A-5034B 4.7 Qualification cross reference. Table VI1 identifies each requirement in Section 3 and correlates the Section 4 paragraphs that qua
48、lify it. 5, PACKAGING 5.1 Adapter preservation and packaging. Preservation and packaging shall be in accordance with Level A, B or C as specified in MIL-STD-794, as specified in the contract, without the use of preserva- tion compound. 5.2 Packing. Shipping containers shall contain one each packaged
49、 adapter. The container shall be suitable for Level A, B or C as specified in MIL-STD-794. 5.3 Unitized loading. Unitized loading for the adapters is authorized as specified in MIL-STD-794. 5.4 Marking. All shipping containers shall be marked in accordance with the requirements of MIL-Sm-129 with the following information: ADAPTER, BOMB RACK, 30-INCH, AERO 1A MILITARY SPECIFICATION NO. MIL-A-5034 PRESERVED (DATE) DOMESTIC OR EXPORT P
