Table XVII. Qualification and Analysis Evaluation Schedule
Test
Temp
Cartridges
Units
Firings
Remarks
( )
F
required
required required
Structural ......................................
-65 ................
2 ..........
70 ................
2 ..........
200 ................
2 ..........
Endurance.....................................
70 ................
2 ..........
Demagnetization ........................... .............
†All
†All ..........
Hydrostatic ....................................
70 ................
†All ..........
Torque ..........................................
70 ................
†All ..........
Environmental............................... .............
..........
Vibration ................................
†All
6
6 ..........
The same 6 units through all
Salt spray ............................... ............. ................ ...........
..........
environmental tests
Sand and dust......................... ............. ................ ...........
..........
High temperature .................... ............. ................ ...........
..........
Low temperature ..................... ............. ................ ...........
..........
Temperature shock ................. ............. ................ ...........
..........
Temperature-altitude humidity
.............
15+6
6
6 Fire all cartridges as well as the 6
cycle.
units.
Firing mechanism..........................
Mechanical .............................
70
................
†All
..........
Gas ........................................
65- 6
................
..........
70
................
6
..........
200
................
6
..........
Electrical ................................
65
................
20
..........
Tested for no-fire and all-fire con
70
................
20
..........
-ditions.
200
................
20
..........
Ignition system .............................
-90
10
10
10
Drop ..............................................
70
3
3
..........
Inert
cartridges
Locked shut ..................................
-65
2
2
2
Use units from drop test.
200
8
8
8
No-load ........................................
65
2
2
2
200
8
8
8
Performance ................................
-65
20
20
20
At least 5 new units for each tem
70
20
20
20
perature group.
200
20
20
20
† "All" means every unit fabricated for qualification and analysis tests.
are disassembled and inspected for signs
chamber to establish a relative humidity
of moisture or deterioration of the
(RH) of 95 to 100 percent. This humidity
propellant or primer charges.
The
is maintained for the remainder of the
remaining cartridges are fired (five at -65
test.
and five at 200 F.) to check their
(2) As soon as possible after completion of
functioning only, so it is unnecessary to
the environmental tests, two units are
record performance data.
Should
disassembled and inspected for signs of
cartridge modification be necessary as a
moisture or deterioration. If moisture is
result of these tests, a new series of tests
detected or if deterioration has progressed
must be initiated.
to the point where the unit may
h. Firing Mechanism Evaluation.
malfunction, the design must be modified
and a new series of tests initiated. If the
(1) Mechanical firing mechanisms generally
two units pass the test, they are
are required to function when the sear
reassembled and all six units are fired at -
(initiator pin) is pulled with a specific
65F.
force. The sear actuation force may be
determined by placing the device in a vise
(3) Five of the cartridges subjected to
and pulling the sear with a spring scale.
temperature, altitude, and humidity tests
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