 |
|||
|
|
|||
| ||||||||||
|
|  MIL-P-82436(OS)
TABLE VI
PREPRODUCTION TEST
OPERATING CHARACTERISTICS
* Total operating time: 420 +30 -0 seconds.
Time includes adjust-
ment of bias pressure.
After each test, post-test servicing and maintenance shall be conducted in
accordance with 4.5.7.
4.4.4.2
Vibration ready condition , The pump, in the ready condition,
shall be mounted in a manner equivalent to that shown in Figure 1. The
resonant modes in each of the 3 axes shall be determined by varying the
frequency of applied vibration slowly from 5 cps to 500 cps. The pump
shall ther be subjected to resonance and cycling vibration in each axis ,
in conformance with the times shown in Table VII. If more than 4 resonances
are encountered on any axis, the 4 most severe resonances shall be chosen
for the test. The resonant and cycling period, for each axis, shall be
divided into 3 equal parts, which are conducted at -45 F 5 F, room
temperature and +140 F 5 F respectively. For cycling, a logarithmic
frequency sweep race shall be used if available; otherwise, other cycling
rates of frequency change may be used. The sweep rate shall be such
that 15 minutes actual vibration time is required to proceed from the
lower to higher and back to the lower extremity of frequency range in
accordance with the accelerations or double amplitudes defined in Table VIII.
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals