 |
|||
|
|
|||
| ||||||||||
|
|  MIL-S-70442 (AR)
The HUDS shall operate and
3.4.5.1 Natural environment.
withstand storage in the environments specified herein.
3.4.5.1.1 Altitude, Operating:
0-20,000 feet; nonoperating
and storage: 0-50,000 feet.
Operating nonoperating, and storage:
3.4.5.10.2 Temperature.
0
-50 to +71 c.
3.4.5.1.3 Humidity. Operation while being subjected to
MIL-STD-81O, Method 507.1, Procedure 11. In Step 6, measurements
shall be taken during the last five hours of the last test cycle.
Operation after being subjected to
3.4.5.1.4 Sand and dust.
MIL-STD-81O, Method 510.1, Procedure I, except that the air velocity
Step 3 may proceed
in Steps 1, 2, and 3 shall be 200 + 100 fpm.
immediately after stabilization in Step 2, if desired.
Operation after being subjected to
3.4.5.1.5 Salt atmosphere.
Operation of the HUDS shall not be
M I L- S T D- 8 1O ,
Method
509.1.
required and failure criteria-shall be limited to corrosion of
finished and metals only. Such corrosion shall be defined as
visible degradation of the equipment surfaces that can be attributed
to flakey, pitted, blistered, or otherwise loosened finish or metal
surface.
3.4.5.1.6 Fungus. No evidence of viable fungus on any surfaces
after being subjected to MIL-STD-81O, Method 508.1.
3.4.5.1.7 Explosive atmosphere. Operation after being
subjected to MIL-STD-81O, Method 511.1, Procedure I, except test to
be limited to a maximum altitude of 20,000 feet.
Operation after being subjected to
3.4.5.1.8 Rain.
During each thirty minute
MIL-STD-S1O, Method 506.1, Procedure I.
rain period, the wind shall be maintained for fifteen minutes,
commencing five minutes after the start of the period as specified
The HUDS shall be operated during the last ten
in the procedures.
minutes of the thirty minute period.
3.4.5.2 Service environment. The HUDS shall withstand the
service environment as specified in MIL-E-5400 for Class 2 equipment
except as noted in Paragraphs 3.4.7.1.1 and 3.4.7.1.2.
I
27
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals