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|  MIL-M-85831(AS)
4.8.5.11 Crash acceleration, The mask shall be subjected to the test as
specified in MIL-STD-810, Method 513.3, Procedure II. The mask shall be
fitted to a dummy head and connected to a breathing simulator set at a flow of
3.9 cfm. at a rate of 44 cycles per minute. With the breathing simulator
`ON', the mask shall be subjected to an acceleration of 25 g's for 10 seconds
applied to the x-axis. The mask shall meet the requirements specified in
3.8.18.11 0
4.8.5.12 Solar radiation. The mask shall be subjected to the test as
specified in MIL-STD-81O, Method 505.2, Procedure II, for 10 cycles. The mask
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shall be fitted to a dummy head. The mask shall meet the requirements
specified in 3.8.18 and 3.8.18.12.
4.8.5.13 Height and center of qravity. The center of gravity location
shall be measured with the mask mounted on a 50th percentile Hybrid 111
headform (Government loaned property) detached from the neck. `The mask shall
be fitted to the Hybrid III headform using the same procedures to fit the
system to a human head. When properly mounted on a 50th percentile Hybrid III
headform, the center-of-gravity of the mask and the Hybrid III headform shall
be measured. The Government suppl led Hybrid III headform will be instrumented
and weigh 10 pounds. The center of gravity of the mask/headform combination
shall meet the requirements as specified In 3.8.18.13. The coordinate system
shall be defined as follows: The origin of the coordinate system shall lie in
the mid-sagittal plane on the line Interconnecting the centers of the Hybrid
III. headform pivot points.
(See General Motors Corporation Drawing Number
78051-61, Head Assembly Complete - Hybrid III, supplied by the Goverment with
loaned head form)) This line shall be the Y axis. The Z axis is
perpendicular to the base plane. The X axis is parallel to the base plane.
The head and neck supported weight of the mask shall meet the requirements of
3.8.)8.13.
PACKAGING
5.
5.1 Preservation.
Preservation shall be level A or Commercial (see 6.2.1).
5.1.1 Level A.
The mask shall be preserved Method IA-8 as specified in
MIL-P-116.
5.1.1.1 Cleaning and dryinq. Cleaning shall be "C-1", any applicable
process, as specified in MIL-P-116 and any drying process of MIL-P-116 may be
applied.
5.1.1.2
Preservative.
No preservative is required.
5.1.1.3 Unit Packaging. The mask shall be cushioned with material
specifed in PPP-C-795, or PPP-C-1842, and shall be placed in a sealed bag
conforming to MIL-B-117, Types I, II or III, Classes E, F or G, Styles 1,.2
or 3. The bag shall then be placed into a PPP-B-566 unit container.
5.1.1.4 Intermediate Packaginq. When specified in the contract (section
6.2), units packaged in accordance with 5.1.1.3 shall be placed into an
intermediate" container as specified in PPP-B-636, Type CF. Class Heather
Resistant Container. The number of the unit containers per intermediate
container and the number of intermediate containers per shipping container
shall be specified in the contract (6.2.1). The intermediate container shall
be closed as specified in PPP-B-636.
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