1、MIL-R-1944r5A( I SEPTEMBER 1959 SUPERSEDI N O MIL-R-I9445(AER) 28 MARCH i956 MILITARY SPECIFICATION RACK, BOMB, AERO 65A SERLES This specification has been approved by the Bureau of Aeronautics, Department of the Navy. 1. SCOPE 1.1 Scope - This specification establishes the requirements for the manu
2、facture, inspection and testing of one type of bomb rack to be known as Rack, Bomb, Aero 65A Series, and hereinafter referred to as rack. 2. APPLICABLE DOCUMENTS 2.1 General - The following documents of the issue in effect on date of invitaction for bidsm part of this speclfication: SPECIFICATIONS F
3、ederal PPP-B-601 Boxes, Wood, Cleated-Plywood PPP-B-621 PPP -C -843 Boxes, Wood, Nailed and Lock Corner Cushioning Material, Cellulosic uu-P-271 PPP-B-63 6 Military _- JAN-P- 100 MIL-A- 140 MIL-B- 21034 MIL-D- 70327 MIL-H-22162 MIL-E- 5400 Paper, Wrapping, Waterproofed Kraft Boxes, Fiber Packaging a
4、nd Packing for Overseas Shipment, General Specification Adhesive, Water-Resistant, Waterproof Barrier Material Bomb Arming Unit Aero 2A, 2A-1, 2B Drawings, Engineering and Associated Lists Hook, Bomb Rack, Aero 65A Series Electronic Equipment, Aircraft, General Specification for MIL-E-7894 Electric
5、Power, Aircraft Characteristics of )THIS DOCUMET COiWAlNS 1.3 PAGaFSC 1095 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R- 19445A(Aer) MIL-P-116 Preservation, Methods of MIL-T-7743 STANDARDS Testing; Store Suspension Equipment, General Specifi
6、cation for Federal Fed. Test Method Std. 151 Metals, Test Methods Military - MIL-STD-129 Marking for Shipment and Storage PUBLICATIONS Air Force - Navy Aeronautical Bulletin ANA Bulletin No. 143 Specification and Standards; Use of Consolidated Classification Commit tee Consolidated Freight Classific
7、ation Rules (Application for copies should be addressed to the Consolidated Classification Committee, 202 Chicago Union Station, Chicago 6, Illinois) - - DRAWINGS List of Drawings Index 55A44A69 Bomb Rack, Aero 65A Series and all drawings listed thereon 2.2 Availability of Documents (1) Give both th
8、e title and number when requesting applicable documents, All requests should be made via the cognizant Inspector of Naval Material or the Bureau of Aeronautics Representative. Copies of this specification and applicable documents may be obtained upon application to the Commanding Officer, Naval Avia
9、tion Supply Depot, (CDS), 5801 Tabor Avenue, Philadelphia 20, Pennsylvania. Requests for drawings must contain a statement of justification for actual need in relation to a government contract. (2) 2.3 Precedence of Documents - When the requirements of the contract, this specification, or applicable
10、 subsidiary specifications are in conflict, the following precedence shall apply: (1) Contract - The contract shall have precedence over all referenced documents. (2) This Specification - This specification shall have precedence over all appE%6=subsidiary documents. Any deviation from this specifica
11、tion, or from subsidiary documents, where applicable, may be made only upon written approval Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-17445A LO a 7777906 0300371 6 W - - -_- . - - - MIL-R- 19445A(Aer)- (3) Referenced Specifications - Any
12、 referenced specification shall haveprecdence over all applicable subsidiary specifications referenced therein. All referenced specifications shall apply to the extent specified. 3. REQUIREMENTS 3.1 Parts and Materials - Parts and materials used in the manufacture of the rack shall conformlGpecifica
13、tions as specified herein or as listed on the applicable drawings. Material%conforming to contractors specifications may be used provided the specifications are approved by the procuring agency, are equivalent to the Government specifications and contain requirements for adequate tests of the materi
14、al. The use of contractors specifications shall not constitute a waiver of Government inspection. All materials shall be of the lightest practical weight and entirely suitable for the intended purpose. When materials are used which are procured under commercially recognized non- Government specifica
15、tions, a certificate acceptable to the Government Inspector, showing compliance with such specifications, shall be furnished by the supplier of such material. 3.1. 1 Critical and Strategic Materials - Materials shall be chosen on the basis of suitability and availability infms country insuantity and
16、 from consideration of the additional restrictions created during a national emergency. Critical and strategic materials shall be used only to the extent considered mandatory for satisfactory operation. The contemplated use of these materials shall be brought to the attention of the procuring agency
17、 with appropriate justification therefor and shall be subject to approval of the procuring agency. 3.1.2 Selection of Materials - Specification and standards for all materials, parts, and Government certification and approval of processes and equipment, which are not specifically designated herein a
18、nd which are necessary for the execution of this specification - shall be selected in accordance with ANA Bulletin No. 143. 3.1.2.1 Standard Parts - Standard parts (MS, AN or JAN) shall be used wherever they etc., may be used provided are suitable for the purpose, and shall be identified in the draw
19、ing by their part numbers. Commercial utility parts such as screws, bolts, nuts, cotter pins, they possess suitable properties and are replaceable by the standard parts (MS, AN or JAN) without alteration and provided the corgesponding standard part numbers are referenced in the parts list and, if pr
20、acticable, on the contractors drawings. In the event there is no suitable corresponding standard part in effect on date of invitation for bids, commercial parts may be . used provided they conform to all requirements of this specification. 3.1.2.2 Weight Reduction - The contractor shall make every e
21、ffort to reduce the equipment% over-all weight without impairing the function, operation or durability. All changes that are required to accomplish weight reduction shall be subject to written approval by the procuring agency prior to incorporation. 3.2 Design and Construction 3.2.1 Conformance to D
22、rawings - No departure from or revision to the drawings specified in 2.1 shall be permitted withoXprior written approval by the procuring agency. In the event changes are approved (see 6. i), the contractor shall furnish the procuring agency with reproducible drawings covering the change. Conformanc
23、e to the drawings will not relieve the contractor of the requirements of 3.4. 3.2.2 Input Power Requirements - This equipment shall perform satisfactorily under all applicable conditions specified in Specification MIL-T-7743, from a 28 volt power source with characteristics and limits as defined in
24、Specification MIL-E-7894. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-174Ll5A 10 W 747470b 0300372 W - - MIL-R- 19445A(Aer) 3.2.3 shall be directly axcompletely interchangeable with each other with respect to installation and performance. C
25、hanges in manufacturers part numbers shall be governed by the drawing number requirements of Specification MIL-D-.7$327.- to all the requirements of tEspecification. The bomb rack shall be capable of suspending and releasing any store of a nominal weight between and including 100 and 1450 pounds and
26、 equipped with the suspension lugs spaced 14 inches center to center. The rack is designed for use in both dive, horizontal and other types of bombing. The rack may be actuated electrically or by the manual release system of the airplane and can be suspended or mounted, either externally as from an
27、airplane wing or fuselage, or internally as within a bomb bay, Interchangeability - All parts having the same manufacturers part number 3.3 Performance - The performance of the rack shall be such that it conforms 3.4 Workmanship - All details of workmanship shall be in accordance with high grade arm
28、ament manufacturing practice for the quantity production of this type of equipment. All parts shall be free from excessive marks, grooving, indentations, cracks, flaws and any other injurious defects which may impair the serviceability of the assembled equipment, All electrical components and wiring
29、 shall be installed in accordance with the workmanship requirements of Specification MIL-E-5400. All workmanship shall be of a quality satisfactory to the procuring agency. Manufacturing and Finish - Manufacturing processes and finishes shall be as shown on the applicable drawings specified in 2.1 u
30、nless otherwise approved by the procuring agency, (see 6.1). The responsibility shall be assumed by the contractor for any malfunction or failure of the parts or the assembled equipment to pass tests specified herein due to unsatisfactory fits, clearance, tolerances, internal stresses or finishes. c
31、onsidered contractors resp%lX= Any defects in items, parts and materials discovered during the inspection and testing shall be corrected by the contractor at his expense. Such corrective measures as may be found necessary shall likewise be incorporated in all subsequent bomb racks offered for accept
32、ance under the contract. 3.4. 1 3. 5 Correction of Defects - Parts not supplied by the Government shall be 4. QUALITY ASSURANCE PROVISIONS 4. 1 Classification of Tests (1) Preproduction Tests - Preproduction Tests are those tests conducted on racks representative of the equipments to be supplied und
33、er the contract, for the purpose of determining that the sample items meet all the requirements of the applicable specifications. (2) Acceptance Tests - Acceptance Tests are those tests conducted on racks submi?ElXor acceptance under the contract and shall consist of the following: (a) Individual Te
34、sts - Individual Tests are those tests conducted on eac7irackks;bmitted for acceptance under the contract. (b) Sampling Tests - Sampling Tests are those tests conducted on a quantity of racks selected as specified herein and which have previously passed Individual Tests. 4 Provided by IHSNot for Res
35、aleNo reproduction or networking permitted without license from IHS-,-,-samples shall be delivered for testing to a prescribed testing activity as directed by the procuring agency. Certification from the cognizant Government Inspector that the material used in the samples is in accordance with the r
36、equirements of this specification shall be forwarded with the samples. Approval of the preproduction samples shall be by the procuring agency upon satisfactory completion of all of the tests listed below. Any defects or failures occuring during these tests shall be cause for tentative rejection of a
37、ll the preproduction samples. All rejected sample racks will be returned to the contractor for rework and correction of defects if this procedure is considered practical and feasible by the procuring agency, otherwise the contractor will be required to submit five additional samples for retests in l
38、ieu of the five reworked samples. If these samples fail any of the required tests, further retests shall be at the discretion of the procuring agency. The preproduction tests shall be divided into three parts as follows: I (3) Critical Tests The preproduction samples must successfully pass each of t
39、he applicable tests. The distribution of the tests among the samples is given in the following subparagraphs and also in Table I. 4.2.2 Major Tests - The required Major Tests are specified in 4.4.2.1. All of the Major Tests shall. be performed on each set of preproduction sampls, however the number
40、of major tests to which a sample is subjected and the order of testing shall be at the discretion of the testing agency unless specified otherwise by the procuring agency. Table I is a recommended testing schedule for the five samples. - 4.2.3 Critical Tests - The required critical tests are specifi
41、ed in 4.4.2. 2. Letters A, B, C, D, E are arbitrary designations assigned to the samples by the testing agency. The distribution of the critical tests among the five samples shall conform to the following schedules: I SamDle Test A B 4.4.2.2 (a) Vibration 4.4. 2. 2 fb Shock Test. Dvnamic D- 4.4.2.2
42、(c) Life Test (Bomb Portion) E Critical Test to be selected by the testing agency The above schedule is included in Table I. Selection of the critical tests to which any additional samples will be subjected shall be at the discretion of the testing agency, unless otherwise specified by the procuring
43、 agency. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-R-17445A LO 777970b 0300379 I - - MIL -R - 19 44 5A(Aer ) * TYPE OF TEST u u1 4 U a I4 4 u E p: u U CI SPECI- FICATION TABLE I TEST SCHEDULE RACLBOMB, AERO 65A SERIES Preproduction and Pr
44、oduction Tests which are to be performed on the preproduction racks by the testing agency. SAMPLE IDENTIFI- APPL. CATION AND ORDER PARA. DESCRIPTION OF TESTS OF TESTS A 4.4. 1. 1 Examination of Product 1 4.4. 1.2 Operational Tests 2 4.4. 1.3 Arming Mechanism Tests 3 4.4. 1.4 Electrical Fuze Arming T
45、ests 4 4.2 Physical Character is tics 4.3 Manual Operation 4.4 Electrical Character istics 4. 5 Lag Tests 4. 6 Performance under Icing Conditions Hi-G Release Test Performance under Sand Conditions I 4.12 1 Salt Spray Test 4.7 Vibration Tests 6 4. 8. 1 4.8.2 Shock Test, Static 4. 10 Life Test 4. 13
46、Destructive Load Test Shock Test, Dynamic 2 - 6 .I 6 I CD 11 2/ 2 33 ,4 4 55 6 7 6 8 E 1 2 3 4 5 6 10 7 8 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.3 Acceptance Tests - The contractor shall be responsible for conducting the Individual Tes 5
47、 times the limit values in the table. - nose right yawing moments are positive when looking aft (2) (3) All loads and moments are at the center of gravity of the store. (4) Sway braces are located 10 inches forward and 10 inches aft of the center of gravity at an angle of 30 on each side of the vert
48、ical center line of the store. 4.5.2 . Dynamic Shock Test Loads - The loads specified for the Shock Test are the loads on the rack when carrying a 1000 pound, low-drag G. P. bomb (Mark 83). The center of gravity of the bomb is approximately 8 inches below the bearing surfaces of the lugs and 7. O in
49、ches aft of the forward lug. The dynamic tests specified in MIL-T-7743 shall be modified where necessary so that the tests are accomplished in each of the six directions parallel to the three principle axes. The load factors (G Values) shall be as follows: Direction Vertical Down G Values 11. o. Vertical Up 5. 5 Longitudinal For ward 9.9 Port 7.2 Starboard 7.2 Notes (3) and (4) of 4.-5. 1 apply to the dynam
