NAVY MIL-R-81965 A-1976 RACK BOMB AIRCRAFT BRU-14 AND BRU-15 SERIES《BRU-14及 BRU-15系列飞机炸弹机架》.pdf

1、ML-R-BL965A LO = 7799906 036017Z B W MI L-R-8 1 965 A (AS) Superseding 11 March 1974 MIL-R-8 1965(AS) n ILITARY SPECIFIC, TION RACK, BOMB, AIRCRAFT; BRU-14 AND BRU-15 SERIES This specification is approved for use by the Naval Air Systems Command, Department of the Navy, and is available for use by a

2、li Departments and Agencies of the Department of Defense. 1. SCOPE AND CLASSIFICATION 1.1 Scope. This specification covers two types of bomb racks capable of carrying and releasing stores having suspension lugs spaced 14 inches (35.56 centimeters) apart and weighing up to 2,200 pounds (997.90 kilogr

3、ams). The test limits in this specification define minimum acceptable capabilities. 1.2 Classification. Bomb racks covered by this specification shall be of the following types: Type I BRU-l4/A Bomb Rack Type II BRU-lS/A Bomb Rack 2. APPLICABLE DOCUMENTS 2.1 Issues of docume General Specification fo

4、r Hooks, Bomb Rack, Generar Specification for F - .- - - - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-81966A (AS) STANDARDS MIL-STD-100 MIL-STD-129 MIL-STD-130 MIL-STD-143 MIL-STD-46 I MIL-STD-462 MIL-STD-704 MI L-STD-794 MIL-STD-831 MS33

5、14 Engineering Drawing Practices Marking for Shipment and Storage Identification Marking of U.S. Military Property Specifications and Standards, Order of Precedence for the Selection of Electromagnetic Interference Characteristics Requirements for Equipment Military Standard, Electromagnetic Interfe

6、rence Characteristics, Measurement of Electric Power, Aircraft, Characteristics and Utilization of Parts and Equipment, Procedures for Packaging and Packing of Test Reports, Preparation of Lug, Suspension, 1,000 lb. (453.6 Kg.) class, Airborne Equipment DRAWINGS Naval Air Systems Command DL909AS 100

7、 Data List, Test Fixture, BRU-12, 14, 15 and AERO 1A Adapter (Copies of specifications, standards, drawings, and publications required by sup- pliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2 Order

8、 of precedence of specifications and standards. Should a conflict exist between any requirement in this specification and any requirement in the applicable documents referenced herein, the requirements of this specification shall take precedence over the referenced (applicable) document. 3. REQUIREM

9、ENTS .3.1 First article. The bomb racks furnished under this specification shall be a product which has been inspected and passed the first article inspection specified herein (see 4.3). 3.2 Selection of specifications and standards. Specifications and standards for necessary commodities and service

10、s not specified herein shall be selected in accordance with MIL-STD-143. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-/IL-R-B3365A 10 = 7777706 0360354 3 MIL-R-81965A (AS) 3.3 Interchangeability. All parts having the same part number shall be di

11、rectly and com- pletely interchangeable with each other with respect to installation and performance. 3.4 Identification of parts. All parts shall be marked as specified on the drawings listed in the data list for the bomb rack being procured, or in accordance with MIL-STD-130, if not specified on t

12、he drawings, The item identification and part number requirements of MIL-STD-100 shall govern the part number and changesthereto. 3.6 Bomb rack. 3.6.1 Construction. The construction of the bomb rack shall be in accordance with the drawings listed in the data list for the bomb rack being procured and

13、 as Specified herein (see 6.2.lg). 3.6.2 Performance. The bomb racks shall satisfy all performance requirements when sub- jected to the following inspections in the order specified in Tables I and II. a. b. C. d. e. f. g. h. 1. j. k. 1. m. n. O. P. 9. 3.6 Electromechanical Component Inspection (4.6.

14、1) Bomb Rack Inspection (4.6.2) Functional Test (4.6.3) Arming Mechanism (4.6.4) Electromagnetic Compatibility (4.6.5) Secondary Systems (4.6.6) Manual Operation (4.6.7a) Electrical Characteristics (4.6.7b) Lag Determination (4.6.7) High-g Release (4.6.7d) Sand (4.6.7e) . Salt Spray (4.6.70 Shock Te

15、st (4.6.73) Vibration Test (4.6.7h) Life Test (4.6.71) Static Test (4.6.7j) Lock Shut Firing (Type I only) (4.6.8) Bomb rack hooks. The construction and inspection of the bomb rack hooks shall be in accordance with MIL-H-85042. 3.7 . Workmanship. The workmanship displayed in fabrication and assembly

16、 of the bomb racks shall be such as to assure, within design limitations, the ability of the bomb racks to meet their performance requirements under all applicable environmental conditions specified herein. Unauthorized repair, welding, heavy burrs, or parts assembled by introduction of high stresse

17、s not prescribed in the drawings, are typical signs of inferior workmanship and shall be cause for rejection. The standards of 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-R-LSb5A 20 m 777390b 03bO255 3 W - MIL-R-81965A (AS) workmanship exhi

18、bited in the approved first article sampfe, subject to any qualification stated in the governments notice of approval, shall be determinative of the requirements of the contract relative to workmanship. 4. QUALITY ASSURANCE PROVISIONS (see 6.4) 4.1 Responsibility for inspection. Unless otherwise spe

19、cified in the contract, the contractor is responsible 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 for the performance of the inspection requirements specified he

20、rein, unless disapproved by the government. The government reserves the right to perform any of the inspections set forth in the specification, where such inspections are deemed necessary to assure that the supplies and services conform to prescribed requirements. 4.2 Classification of inspection. T

21、he inspection of the bomb racks shall be classified as -follows: a. b. First article inspection (see 4.3) Quality conformance inspection (see 4.4) 4.3 First article inspection. First article inspect.m shall consist of all of the inspections listed in Table I. First article inspection report format s

22、hall be in accordance with MIL-STD-831 (see 6.3). 4.3.1 Sampling for first article inspection. First article bomb rack samples shall consist of the first two bomb racks manufactured on contract. The bomb racks shall be permanently labeled A and B for ease of identification. Failure of the bomb racks

23、 to pass any of the first article inspections shall be cause for rejection (see 6.3). 4.4 Qualip conformance inspection. Quality conformance inspection shall consist of the following inspections: a. Individual Inspections (see 4.4.1) b. Sampling Inspections (see 4.4.2) Quality conformance inspection

24、 report format shall be in accordance with MIL-STD-83 1 (see 6.3). .- 4.4.1 Individual inspections. Individual inspections are those inspections conducted on each bomb rack. Individual inspections for the bomb racks are shown in Table II, Group 1. Failure to pass any of these inspections shall be ca

25、use for rejection of the bomb rack. 4.4.2 Sampling inspections. A random sampling of the bomb racks shall be selected by the procuring activity from each production lot in accordance with Table III and shall be subjected to the inspections listed in Table II, Group 1 and Group 2. Group 1 inspections

26、 shali be eonducted prior to Group 2 inspections. Failure to pass any of these inspections shall be cause for rejection of the entire lot (see 6.2. If and 6.3). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-81965A LO m 7797706 0360356 5 W MIL

27、-R-81965A (AS) TABLE I FIRST ARTICLE INSPECTIONS - SCHEDULE AND SEQUENCE i SPARE UNITS REQUIRED PER RACK TESTED SECONDARY RELEASE TESTS Electromechanical-Component Inspection Bomb Rack Inspection Functional Arming Mechanism Manual Operation Electromagnetic Compatibility Electrical Characteristics Se

28、condary Systems Lag Determination High-g Release Sand Salt Spray Shock Vibration Life Static Lock Shut Firin TEST PARAGRAPH 4.6.1 4.6.2 4.6.3 4.6.4 4.6.7a 4.6.5 4.6.7b 4.6.6 4.6.7 4.6.7d 4.6.7e 4.6.7f 4.6.78 4.6.7h 4.6.7i 4.6.7j 4.6.8 SAMPLE 1 2 3 4 X X 5 6 X 7 8 X X 9 X 10 1 2 3 X 4 5 X X 6 X X 7 8

29、 X 9 X - iT Inspection sequence is denoted by the numbers in the sample columns. An X denotes inspection not required. E Spare units are applicable to Type I bomb racks only. See 6.2. If. Is This requirement is applicable to all bomb rack inspections with the exception of arming mechanisms and manua

30、l operation. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE II QUALITY CONFORMANCE INSPECTIONS - SCHEDULE AND SEQUENCE F SPARE UNITS REQUIRED PER RACK TESTED E AUXILIARY UNLOCK SECONDARY RELEASE TESTS GROUP 1 Electromechanical Component Insp

31、ection Bomb Rack Inspection Functional Arming Mechanism GROUP 2 Manual Operation Electromagnetic Compatibility Electrical Characteristics Secondary Systems Lag Determination High-g Release Sand Salt Spray Shock Vibration Life Static Lock Shut Firing (Type I Racks only) TEST PARAGRAPH 4.6.1 4.6.2 4.6

32、.3 4.6.4 4.6.7a 4.6.5 4.6.7b 4.6.6 4.6.7 4.6.7d 4.6.7e 4.6.7f 4.6.7g 4.6.7h 4.6.71 4.6.7j 4.6.8 SAMPLE ALL SAMPLES - A 1 X X 2 3 X 4 5 X X 6 X 7 - B X 1 2 X X 3 X X 4 5 X 6 X E 1 2 3 - C 1 X X X X X X 2 X X 3 X X - D X 1 2 X X 3 X X X X X 4 X F Inspection sequence is denoted by the numbers in the sa

33、mple columns. An X denotes inspection not required. Tp Spare units are applicable to Type I bomb racks only. See 6.2. If. i This requirement is applicable to all bomb rack inspections with the exception of arming mechanisms and manual operation. Provided by IHSNot for ResaleNo reproduction or networ

34、king permitted without license from IHS-,-,-MIL-R-81965A (AS) ITEM Bomb Racks PRODUCTION LOT SIZE NUMBER OF SAMPLES 100 or Less 2 101 - 200 3 201 - 300 4 301 or More r . (TThe procuring activity shall specify the number of samples, and the sequence of inspections each unit shall be subjected to for

35、lots in excess of 300 units (see 6.2.le). 4.6 Inspection conditions. Unless otherwise specified, all inspections shall be performed under the following conditions: a. Room temperature. Room ambient of 256 10C (77f 18F) indicated. b. Test temperature. All parts of the test item shall be stabilized at

36、 the specified temperature f 2.8“C (f5“F) indicated prior to conducting any tests. Unless otherwise specified, tem- perature stabilization 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 (f5“F) in a period

37、 of 1 hour. C. Test fixture. Whenever tests require that a store be mounted to a bomb rack, a fixture shall be utilized which is in accordance with DL9WAS100. All swaybrace adjustments shall be in accordance with this data list. This configuration is for test purposes only. d. Test stores. Unless ot

38、herwise specified in the applicable paragraph, the lightest store shall be 101 pounds (45.81 kilograms) and the heaviest store shall be 2,200 pounds (997.90 kilo- grams). The stores shall conform to the following parameters. All store suspension lugs shall be in accordance with MS3314 and shall be s

39、paced 14 inches (35.56 centimeters).apart. The 101 pound (45.81 kilogram) store shall have a center of gravity located midway between the suspension lugs and 5 1/2 inches (13.97 centimeters) below the hook bearing surface of each suspension lug. The other stores shall have centers of gravity located

40、 midway between the suspension lugs and 8 inches (20.32 centimeters) below the hook bearing surface of each suspension lug. e. Input power requirements. The bomb rack shall perform satisfactorily under ail applicable conditions specified herein from a 28 VDC rated voltage power source with character

41、istics and limits as defined in MIGSTD-704, except that the bomb rack shall operate over a range of 20 to 30 VDC, measured at the bomb racks input connector(s). 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.6 Inspoction methods. 4.6.1 Electrome

42、chanical component inspection. The following inspections shall be made during (when applicable) and after each of the inspections conducted on the bomb rack, as specified in Tables I and II, with the.exception of 4.6.4 and 4.6.7a. 4.6.1.1 Type I and Type li bomb racks. Proper operation of the cocked

43、 indicator and transfer switches of the Actuator, Linear, Electromechanical, hereinafter referred to as the LEMA, shall be verified in accordance with 4.6.3.1d or 4.6.3.2d. The voltage shall be as specified in the applicable inspection. 4.6.1.2 Type I bomb racks only. a. The actuator assembly (In Fl

44、ight Operable Bomb Rack Lock), hereinafter referred to as the IFOBRL, shall be electrically locked after cocking the linkage assembly of the bomb rack, unless otherwise specified herein, Unless otherwise specified, the IFOBRL shall be electri- cally unlocked just prior to each release of the linkage

45、 assembly, with or without a store suspended from the bomb rack, The IFOBRL shall complete full travel (lock-to-unlock or unlock-to-lock) in 2.2 to 4.5 seconds when operated electrically (20-30 VDC). This require- ment is applicable to all environmental conditions specified herein. Proper operation

46、of electrical and mechanical position indicators of the IFOBRL shall be verified for each cycle. b. Proper operation of the auxiliary unlock assembly indicator switch, which indicates actua- tion of auxiliary unlock assembly, shall be verified. 4.6.2 Bomb rack inspection. The bomb rack shall be insp

47、ected as follows: 4.6.2.1 Individual inspections. Each bomb rack shall be inspected to ensure that it has been properly assembled and adjusted, that the electrical connections are secure and that the workmanship is as specified herein (see 3.7). 4.6.2.2 First article and quality conformance inspecti

48、ons. a. Each bomb rack shall be thoroughly examined to determine conformance to all of the requirements specified herein (see 3.5.1). b. The bomb racks shall be examined to ascertain that the packaging conforms to the contract requirements (see 5). 4.6.9 Functional test. Type I and Type II bomb rack

49、s. 4.6.3.1 the sequence listed. Type I bomb racks, The following test shall be performed on each Type I bomb rack in a. With the bomb rack unloaded and the IFOBRL unlocked, cock the LEMA and linkage assembly and latch the hooks. Verify that there is free play between the bell crank and the LEMA. Verify that the linkage assembly is properly cocked and the hooks securely latched. Manually turn the IFOBRL knob until the IFOBRL i