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|  MIL-s-22518 /3(AS)
REQUIREMENTS (Continued)
Applicable paragraphs
of MIL-S-22518A(AS)
After the ATS/AD temperature has been stabilized
for a minimum of 8 hours at +160F, three
consecutive cycles at a +160F ambient air
temperature shall be run. Each cycle shall be
as specified for phases A, B and C of 4.5.11.1.
Accessory Drive: After a minimum 8-hour soak
period at an ambient air temperature of +250F,
the ATS/AD shall be operated with ambient air at
250F minimum at 3500 RPM speed at pad "A" drive
for a period of 5 hours and at 7200 RPM for 5
hours with a 55 HP continuous load applied to
the accessory drive output. An 82 HP load shall
be applied for 2 minutes once during the test
at each of the above speeds. A 110 HP load
shall be applied for 5 seconds twice during this
test at 4000 RPM and 7000 RPM.
4.5.12
No. of cycles: 5
Consecutive Cycle Operation:
4.5.14
Vibration: All vibration testing shall be conducted
with the specified accessory or a dummy, having
a weight of 17.4 pounds and a center of gravity
4 inches from the mounting face, mounted on the
accessory pad (pad "B"). Mounting shall be
dynamically similar to that encountered in service
use. Vibration tests shall be conducted in
accordance with MIL-STD-810, Method 514, Procedure I,
Curve F (Parts 1, 2 and 3). In addition, the
ATS/AD shall be capable of withstanding a loading
of 10g bending moment applied at the ATS/AD e.g.
in any direction without structural damage.
4.5.18
pad "A" Drive Shear Section Strength: Torque
(Lb-Ft): 535 to 620
Preparing Activity
Navy - AS
Project No. 2995-N135
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