 |
|||
|
|
|||
| ||||||||||
|
|  MIL-T-63533(AR)
Resonances
Resonant
Occurring
Dwell
Between
Frequency
4 - 100 Hz
At resonance
d. Transportation vibration testing shall be in
accordance with MIL-STD-810, Method 514.2, Procedure X.
4.5.2.2 Shock test.
a. Gun turret. The gun turret, including all turret-
mounted electrical/electronic components, and each of the
designated weapons, shall be installed in a test fixture that will
simulate service usage and subjected to a shock test in accordance
with MIL-STD-810, Method 516.2, Procedure I, Figure 516.2-2, for
flight vehicle equipment. The "g" value shall be within 10
percent when measured with a 0.2 to 250 Hz filter.
b. Electronic control units. The electronic control
units shall be installed in a test fixture that will simulate
service usage and subjected to shock tests in accordance with:
(1) MIL-STD-810, Method 516.2, Procedure I, Figure
516.2-2 for flight vehicle equipment. The "g" value shall be
within + 10 percent when measured with a 0.2 to 250 Hz filter.
(2) MIL-STD-810, Method 516.2 Procedure V.
4.5.2.3 Temperature-altitude-humidity.The UTS shall be
subjected to temperature-altitude-humidity testing as follows:
a. With the
UTS nonoperating, adjust test chamber
temperature to -65F
and stabilize test specimen. Lower chamber
internal pressure to
an equivalent of 50,000 feet altitude and
maintain temperature
and altitude for not less than 3 hours.
b. With the UTS nonoperating and temperature at -65F,
adjust internal chamber pressure to 20,000, stabilize chamber and
operate UTS.
c. Readjust test chamber internal pressureO to room ambient
and allow chamber internal temperature to rise to 0 F.
d. Allow frost and some icing to form on UTS and when UTS
is completely covered with frost and some icing, operate UTS.
e. Allow UTS to return to room ambient temperature and
stabilize and operate UTS.
32
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals