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Page Title:
Endurance Test, Accessory Drive High Torque Test |
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|  MIL-S-22518 /3(AS)
REQUIREMENTS (Continued)
Applicable paragraphs
of MIL-S-22518A(AS)
Generator Load
Input Speed
Operating Time
% of rated
RPM
Hours
3.5
10
3500
8.0
5300
10
10
7200
11.5
10.5
3500
50
24.0
5300
50
7200
34.5
50
58.5
3500
100
136.0
5300
100
7200
173.5
100
During the test, 150% rated generator load shall be
applied for 2 minutes every hour. 200% rated generator
load shall be applied for five seconds every four hours
at a speed greater than 4000 RPM.
The complete package shall be cycled for a total of 40
hours per the following schedule.
The above cycling shall be accomplished at speed of
3500, 4000, 4500, 5000, 5500, 6000, 6500, 7000, 7200 RPM.
Signs of structural weakness or wear incurred during the
accessory drive endurance test that will interfere with
continued operation shall be cause for rejection.
Endurance Test, Accessory Drive High Torque Test. At
an input speed of 3500 RPM, the unit shall be
cycles for 15 minutes at 55 HP and 2 minutes at
82 HP for a total of two hours.
Endurance Test Starter: No. of cycles: 1200.
4.5.7
Each cycle shall consist of three consecutive
phases as follows:
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