1、15 JANUARY 1964 MILI TAlX SPECIFIC AT1 OF1 - # i -_ -_ - SHACYZZ, BOHB, YAREwing tests specified in Specification mL-T-77/13. a. Physical characteristics h. Manual operation . c. Lag or time sf release determination . Performance under icing conditions e. Life test f. Shock test g. Vibration test h.
2、 Static test (as modified by 4.6.4) i . (1.6.1 Bomb shackle static tes The conipleteiy assembled bomb shackle shall he subjected to the fkllowing ultimate loads, each load to be applf ed separately in the direction noted: 3 f Y d 2P ,000 pminds Vertically down 12,Wc pounds Vertically up Fi, 50R poun
3、ds Lmgi t:idinal ly forward 8 5“ pounds Longitudinally aft 4.6.5 Ilmk ultimate loati test - The hmk shall be attached to the test fjxture speciPied in 4*51 and siibjected to a vertlcally down laad to destriictinn. The. hook shall not fail below the ultimate load rf 131CP.fi pounflc. 4.e.0, IIonk dyn
4、amic load test - The hook shall be attached to the test fixiture as describedin45J.The hook shall be subjected tr 25,OW dynamic loading cycles with loads beginning at 2,250 p3unds, increasing to 7,750 pgunds and rediiced to 2,250 pniiritis during each cycle. be 180or 3600 cycles per minute. The load
5、-time curve shall be equivalent to that produced by the Sonntag fatigue testing machine. fail below 25,ciOC cycles. The cyclic ratesball The hook shall not Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-S-23895 10 m 9999906 0303905 T - _ MIL-W-
6、23895 EP) 4.7 Re.iections - 4.7.i Quality conformance inspection lot sample - The failure of any Inspection lot sample to pass the inspections outlined in this *specification shall cause tentative rejection of all shackles or .hooks represented by that sample, subject to retest as hereinafter provid
7、ed. 4.7.2 Individual re.iection; - The failure of any shackle, any hook, any piece, sub-assembly, or assembly of same to pass the individual inspections outlined in 4.4.1 shall cause its tentative rejection, subject to retest as hereinafter provided, 4.7.3 Balvaaed pieces - Any piece(s) from a rejec
8、ted shackle may be salvaged for use providing each salvaged piece is inspected, and is found to he in complete compliance with the requirements of this specification and the applicable drawings, 4.8 ReinsDection - 4.8.1 Inspection lot samples - first retest - In the event any sample representing an
9、inspection lot fails to pass the inspection outlined herein, the contractor shall have the opportunity of reworking the entire affected lot and resubmitting to retest twice as many samples, selected at random. inspection, the lot represented thereby shall be considered acceptable. Should any of thes
10、e samples fail, the entire lot represented thereby shall be rejected. Should all of these samples pass the required 4.8.2 Inspection lot samiles - second retest - If, in the contractors opinion, the failure of the retest samples is due to a remed- iable defect, the contractor may, at the discretion
11、of the Naval inspector, be offered the opportunity of reworking the entire affected lot and re- submitting to a second retest three times as many samples, selected at random, as originally submitted-for the lot. Should all of these samples pass the required tests, the lot represented thereby shall b
12、e considered acceptable. Should any of these samples fail, the entire lot represented thereby shall be finally rejected. 8. - . .-. .- . . . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-23875 LO 7777706 0303706 L = I JI I L-s - 2 3 Q n 5 (VE
13、 P )- 4,s. 3 Tnsnection suhseauent to deliverv - Anv r)r all shackles may be subject to inspection for conformance with the requirements of tk-if? speci ficatinri and applicable drawings after deliverv tn the Gwernment. 5, PREPARATI OX FOR DELIVERY 5.1 Preservati on and wickad RE: - 5.1.1 Level A -
14、The bomb shackle shall he preservei1 and packaged in accordance with Specification hlIL-P-f936, Level A, shall conform to Specification hlII.-P-16, llethod III. The packaging methnd 5.1,2 Level C - Preservation and packaging shall conform tr, Specification. MIL-P-7938, Level C. 5.2 Packinq - 9.2.1 L
15、evels A. I3. and C - The bomb shackle shall be packed in accordance with Speci fication AIIL-P-7936, Level A, B, or C as sneciPier1 iri the pmcurement document. 5.3 Marking - liarking sbal canform to Standard ! when siispended or mounted, either externally, as from an airplane winp gr fuselage, or i
16、nternally, as within a bomb-bay. The bmb shackle may be actuated electrically by a bomb shackle E. 2 Ordering data - Pmcurement documents shriiild speci fy the following: (a) Title, number and date of this specification (b) Selection of applicable levels of preservation, (c) Whether preproductian te
17、st (dl Where the preprodiwti on ?est is to be conducted (e) Samples siibjecterl to prepmdiictian test are nqt packaging, and pack ng required I is required (nee 4.3.1.1) (see 4.3.ii2) to be considered or shipped as part gf the cmtract or oider Provided by IHSNot for ResaleNo reproduction or networki
18、ng permitted without license from IHS-,-,-MIL-S-23895 LO 9999906 0303907 3 (f) Samples subjected to smpling 1. test are not to be considered or shipped as part of the contract or order (see 4,4.2) 6.3 Availability of dummy stores for testing - The contractor shquld submit requests to the procuring a
19、gency for dummy and inert stores to be used for testing as required by this specification. 6.4 Hook processinP information - The following infomation is presented as a recommended guide to the manufacturer. is based on test and experimentation conducted under direction of the Government for the purp
20、ose of determining a satisfactory manufacturing pro- cess for hooks. The contractor may use this information at his discretion, but compliance with the procedures set forth below will not necessarily.in- sure acceptance of the finished hooks. Acceptance of the hooks will be contingent upon satisfact
21、ory performance and test results as specified herein This information 6.4.1 Forging - The forging-furnace conditions should be such as to give a minimum of decarburization. In the first heats obtained, the extent of decarburization should be determined in order that adequate allowances may be made f
22、or completely grinding off all decarburization resulting both from forge and heat treatment. Adequate stock should be retained on the forging blank to permit the removal of at least 0.010 inch of stock from all surfaces, 6.4.2 Heat treatment - The forgings should be heat-treated iollowing the forgin
23、g operation. ance with Specification MIL-H-6875 except as modified and amplifted herein. The heat treatment should be in accord- 6.4.2.1 Furnace - The furnace or furnaces used for normalizing, annealing, and hardening preferably should be of the continuous type with an adjustable speed conveyor and
24、should be operated through automatic temperature controllers to maintain the temperature of all points in the working zone within the required temperature ranges. for tempering should be adequate to heat uniformly all parts of the furnace atmosphere. All furnaces should be the controlled-atmosp-here
25、 type in order to prevent decarburization. The furnace used 6.4.2.2 Loading - During normalizing, annealing, hardening, and tempering, the parts should be loaded in a manner so as to permit uniform air circulation around all surfaces of the hook and to permit uniform heating OZ all hooks in the load
26、, 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-23875 LO a 7797706 0303708 5 _c 6.4.2.3 Iieatinq - The time zequ,ir and the fact that the Government may have for- mulated, furnished or in any way supplied the said drawings, specifications,
27、 or other data is not to be regarded by irzplication or otherwise as in any manner licensing the holder or any other person or corporation, or conveying - - any rights or permission to manufacture, use or sell my patented invention lia% may-in any way B reatec? thereto. Provided by IHSNot for Resale
28、No reproduction or networking permitted without license from IHS-,-,-.- MIL-S-23875 10 W 7777706 0303710 3 W 2- . - e P.1 8698 N - -/ C 63AI 19ClO-I B86989- PI N -I C86984 -I LOWER “ El/ r . I, 6 -+- - - - + -3 .i- I I C-86983 - I r/- FIXTURE, UPPER 8-8699 I - I /- BLOCK B86987-1 BUSH I NG PRE-STRESS FIXTURE- FOR MK8MOD5 HOOK BOMB SHACKLE (0 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
