MIL-DTL-48568D(OS)
l.
Whether any of the following are required and, if so the appropriate DID: test reports,
ammunition data cards, certification data, or product assurance quality program plan.
m.
That the safety precaution requirements of the "Contractor's Safety Manual for
Ammunition, Explosives, and Related Dangerous Material," DOD 4145.26M are
applicable. NOTE: When this specification is used as part of the description of work to be
accomplished by a Government activity, the safety precaution requirements of
"Ammunition and Explosives Ashore" OP 5 are applicable.
6.3 Definitions. (See figure 2.)
6.3.1 Mechanical failure. A mechanical failure is defined as any deformation or breakage of a part, the
occurrence of which is other than a design function.
6.3.2 Catapult ignition delay time. Catapult ignition delay time (CId) is the elapsed time from the first
indication of shearing of the firing pin shear pins (t0) to the beginning of the continuous rise (t1) on the
catapult thrust-time record (see figure 2).
6.3.3 Catapult launch time. Catapult launch time (CLt) is defined as the time between the beginning of the
continuous rise (t1) on the thrust-time curve and separation (t2).
6.3.4 Catapult separation velocity. Catapult separation velocity (CSv) is defined as the average velocity of
the simulated ejected weight propelled horizontally at catapult separation measured over the interval from
separation to 12 inches after separation.
6.3.5 Rate of change of acceleration. Rate of change of acceleration ( A) is defined as the maximum
change in acceleration occurring in any 30 millisecond interval on the continuously rising portion of the
acceleration time record (see figure 2).
6.3.6 Rocket motor ignition delay. Rocket motor ignition time (RId) is the elapsed time from separation
(the point on the catapult thrust trace where the trace begins to drop sharply) to 10 percent of maximum
thrust, as measured on the rising portion of the normal component rocket thrust trace (see figure 2).
6.3.7 Rocket motor action time. Action time (RAt) is determined from the normal thrust-time curve, and is
defined as the time interval from the 10 percent of maximum thrust on the initial rise of the curve to the
corresponding 10 percent of thrust on the declining portion of the curve (see figure 2).
16
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business