ARMY MIL-P-70486 (1)-1990 PROCESSOR SIGNAL FIRE AND FLIGHT AIR DATA SUBSYSTEM HELICOPTER ARMAMENT M143《M143直升机武器用火灾和飞行大气数据子系统的信号处理器》.pdf

1、MIL-P-704b (L)-lZ 777770b 0447852 T humidity test. II . s, 4.6.4.11.3: Delete in its entirety and substitute: “4.6.4.4 Transportability. The EPU shall be unpacked and secured to the vibration table and shall be vibrated along each axis at the sinusoidal frequencies and amplitudes depicted in Fig. 11

2、. The frequency of applied vibration shall be cycled logarithmically from 5 to 200 to 5 Hz, each cycle having a sweep time of 12 minutes. for 84 minutes per axis. vibration. At the conclusion of this test, subject the EPU to the performance tests of Table IV.“. The system shall be exposed to the cyc

3、ling The EPU will not be operated during Add enclosed figure 11 (36A). 4.6.4.12: Delete in its entirety and substitute: “4.6.4.5 Electromaqnetic radiation. The EPU shall be installed in laboratory test fixtures in a manner that will simulate ac- tual service usage and tested to MIL-STD-461 for the r

4、equirements of 3.4.8.n. -5 i . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-70486 (AR) AMENDMENT 1 KCELERATION LEVELS: $9 (PEAK) i Il I I I I II 1 I II II I II I I I : I ii I i1 I 11 I 57 92 il0 200 2 .7 SXE: ALL CURVES SULL BE EATESCED TO 2

5、 H: WES TEST 1TEl RES3YXKCES BELOiS 5 H: ARE EhPECTED. 6 (36A) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Custodian : Army-= MIL-P-70486 (AR) AMENDMENT 1 Preparing activity: Army-= (Project 1270-A090) 7 . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-