1、flIL-A-88b7C (1) 9999906 1851337 921 NOT MEASUREMENT SENSITIVE MIL-A-8867C(AS) AMENDMENT 1 25 March 1993 MILITARY SPECIFICATION AIRPLANE STRENGTH AND RIGIDITY GROUND TESTS This amendment forms a part of MIL-A-8867UAS). dated 10 June 1987, and is approved for use within the Naval Air Systems Command,
2、 Department of the Navy, and is available for use by al 1 Departments and Agencies of the Department of Defense. PAGE 1 1.1: Delete items “h“ and “i“ and substitute “h. Proof tests for flight articles.“ PAGE 2 2.1.1: Delete “MIL-A-8870 Airplane Strength and Rigidity - Vibration, Fluttw, and Di verge
3、nce. I PAGE 3 3.1.1: Delete and substitute: “3.1.1 Terminology. Definitions and symbols are in accordance with 6.5 through 6.5.14 here1 n , and MI L-A-8860. II PAGE 7 3.3: Delete the last sentence and substitute: “In add1 tion, an empennage test article shall be used for the empennage dynamic fatigu
4、e test of 3.7.1.6.1.“ AMSC NIA FSC 1510 DISTRIBUTION STATEMENT A. Approved for public release; distri bution is un1 imi ted. 1 of 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-88b7C (1) m 999990b L851338 8b8 m MIL-A-8867C(AS) AMENDMENT 1 PA
5、GE 29 add as new paragraph 3.7.1.6.1: “3.7.1.6.1 Empennaqe dynamic fatigue tests. In addition to fatigue testing for maneuver loads in 3.7.1.6, a dynamic fatigue test shall be performed on the empennage as early as possible in the program. The dynamic tests shall be based on dynamic data measured on
6、 the FSD airplane during the flight vibration and acoustic tests. The test shall be performed unti 1 the service 1 ife with a scatter factor of two is demonstrated. Thereafter, testing shall be continued until a scatter factor of four is achieved or a major nonrepairable failure occurs.“ PAGES 31 th
7、ru 41 3.8: Delete inc luding all subparagraphs through 3.8.7.“ PAGE 33 Figure 3: Delete PAGES 41 and 42 3.9: Delete including all subparagraphs through 3.9.5: NOTE: The structural dynamic tests of 3.8 and the dynamic fatigue tests of 3.9 (except the empennage dynamic fatigue tests which have been ad
8、ded as 3.7. l. 6.1 1, have been deleted herein and are superseded by the structural dynamic laboratory and ground tests (4.3) of MIL-A-8870C(AS), dated 25 March 1993. Preparing activity: Navy - AS (Project No. 1510-NO62) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
