MIL-PRF-1/1618C
TABLE I. Testing and inspection - Continued.
3
9/
An airflow, at standard atmospheric pressure, of 25 ft /min shall be directed at the cooling fins from an orifice of 1.1719 inches
(2.977 mm) by 1.3594 inches (34.53 mm) located 0.250 inches (6.35 mm) from the cooling fins.
10/ The tuning shaft shall be continuously driven at a speed of approximately 650 r/min. The tube shall meet end-of-life requirements at
completion of this test.
11/ Life test shall be conducted in accordance with the following cycle:
Test condition
Duration
1
2 minutes
3
4 hours
off
28 minutes
12/ This test need not be performed if last performed within 3 years and no related change has occurred in design, materials used, or
production methods used in the manufacture of tube type 7256.
13/ The use of reclaimed materials shall be encouraged to the maximum extent possible.
14/ Anode temperature to be measured at this point.
4
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business