ARMY MIL-S-13387 (1)-1970 SIGHT REFLEX M18《M18型反射瞄准器》.pdf

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1、- MIL-S-13387 (HU) AMEhDMENT 1 25 March 1970 MIL-S-3337 (1) 32 = 7779906 0275233 7 W ELITARS SPE CIPICATION SIGHT, REFLEX: M18 Th.is amendment forms a part of Military Specification MIL-S-13387 (Ord) , dated 20 April 1954. .- Paragraph 2.1, under Drawings: Add: “PS 5 6 5 55 G Pressure Tcctcr - Two S

2、tation: 8565556“ Followiny: pnrngrcipli 3.12 add new paragraph 3.13 Saaliny: “3.13 Scaling. - The sight (body assembly) shall withstand an internal pressure of five (5) psi of dry nitrogen gas for one hour without showing a pressure drop in excess of 0.05 psi. Subsequent to the above, the inter- ior

3、 atmosphere of the body assembly shall have a dew point of -25OF.“ Following paragraph 4.6: Add new paragraph 4.7 Sealing: i “4.7 . . Sealing.- This test shall be performed using testing equip- ment the accuracy of which shall conform to the accuracy depicted on Drawing F8565556. The fixture shall b

4、e Set-up as outlined in Set-up instructions shown on Drawing F8565556, Sheet 1. The gas used shall be dry nitrogen having a dew point of -25F. sight (body assembly), adjust testing pressure to the pressure specified in 3.13and maintain the pressure for time specified. At the completion of this test,

5、 connect a dew point tester to the exit port and purge the sight until -25F is recorded and seal the unit.“ After connecting the test fixture to the Custodian: Army - Mu Preparing activity: Army - Mu Project No. 1240-A233 FSC 1240 . I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-