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|  REQUIREMENTS
(Continued)
Applicable paragraphs
of MIL-S-22518A(AS)
Rated Conditions:
3.5.1
Starter (Pad "A"):
Drive Speed. RPM: 1200
Drive Torque, Min (Lb-Ft): 290
Airflow, Max (Lb per Min): 110
Inlet Air Total Pressure (In. Hg A): 100
Inlet Air Total Temperature (F): 345
29.9
Exhaust Gas Discharge Pressure (In. Hg A):
NOTE:
At an input speed of 7000 RPM at pad "A" drive, pad "B" drive
shall rotate at 4200
RPM.
cutout RPM:
3.5.1
3200 plus 200 minus 0
Maximum Temperature Limit: The air turbine shall be
3.5.2
capable of operating with a maximum inlet air
3.5.8
total temperature limit of 650 F at rated
inlet air total pressure.
Altitude: The ATS/AD shall not be damaged when subjected
3.5.8
to 75,000 ft altitude in the overrunning mode
4.5.17
of operation. The ATS/AD shall be capable of
developing rated drive speed and torque at an
8000 ft altitude in the starter mode of operation.
Accessory Drive: Complete 20 cycles of the test
schedule of Figure 2.
Attitude: The ATS/AD shall be capable of meeting
3.5.9
the operational requirements when the ATS/AD
4.5.16
centerline, taken through the pad "A" shaft
axis, is in any position within 10 degrees of
the horizontal position. Inverted flight test
time is 15 minutes.
Overrunning (Qualification): The ATS/AD shall be
overrun at a 7250 RPM pad "A" drive speed for a
total of 20 hours. Testing need not be continuous
but test periods shall not be less than 5 hours.
2
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