118
120
8) Many of the goals and objectives pertaining to the design for supportability, design for
reliability, design for maintainability, and the design for human factors (usability) are
mutually complementary. For “supportability,” the objective is to design a system that can
9) The consideration of logistics and the design for supportability must be inherent within the
systems engineering process commencing in conceptual design from and beginning and
121
11) Spare/repair part demand rates, criticality of spare/repair part, location of inventories,
inventory levels and economical order quantities, sources of supply, and total cost are
factors that need to be considered in determining supply support requirements. Type of
items requiring maintenance, frequency of anticipated maintenance, maintenance
123
17) Referring to Equation 9.42 (page 264), the EOQ or Q* is:
Q* =
2(2)(25)(200)
(0.25)(100)
p
h
CD
C
=
= 20 units
18) Referring to Equation 9.42 (page 264),
Referring to Equation 9.40 (page 264),
19) The EOQ model is generally applicable in instances where there are relatively large
quantities of common and standard spares and repair parts. The objective is to determine
the proper balance between the costs of procurement and the costs of inventory
126
28) The logistics and maintenance support infrastructure, as a total entity, can actually be
“validated” only after the system is delivered and in operational use by the customer (user),
29) In recent years, the field of logistics and maintenance support has expanded tremendously
with the advent and utilization of many relatively new “technologies” to include the
implementation of electronic commerce (EC) methods, information technology (IT) and