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ENTD412 - Systems Engineering > Chapter 3 > Flashcards

Chapter 3 Flashcards

1
Q

Conceptual design

A

The first and most important phase of the system design and development process.

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2
Q

systems engineering

A

The __________ process generally commences with the identification of “want” or “desire” for something based one some “real” deficiency.

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3
Q

problem

A

It is important to commence by the _____ and then defining the need for a specific system capability that (hopefully) is responsive.

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4
Q

statement of the problem

A

To ensure a good start, a comprehensive _________ should be presented in specific qualitative and quantitative terms and in enough detail to justify progressing to the next step.

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5
Q

quantitatively

A

A complete description of the need, expressed in _______ related criteria whenever possible, is essential.

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6
Q

needs analysis

A

Having defined the problem completely and thoroughly, a _______ should be performed with the objective of translating a broadly defined “want” into a more specific system-level requirement.

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7
Q

functional manner

A

There are many basic questions of this nature, making it important to describe the customer requirements in a ______ to avoid a premature commitment to a specific design concept of configuration.

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8
Q

hows

A

The ultimate objective is to define the WHATs first, deferring the _____ until later.

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9
Q

effective communications

A

The objective is to ensure that proper and ______ exist between all parties involved in the process.

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10
Q

architecting

A

Planning and ______ are essential and coequal activities for bringing a new or improved capability into being.

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11
Q

program management plan (PMP)

A

The overall “program requirements” for bringing the capability into being initiate an advanced system planning activity and the development of a ________.

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12
Q

management-level

A

While the specific nomenclature for this top-level plan may differ with each program, the objective is to prepare a _______ plan providing the necessary guidance for all subsequent managerial and technical activities.

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13
Q

systems engineering management plan (SEMP)

A

The PMP guides the development of requirements for implementation of a systems engineering program and the preparation of a ___________, or systems engineering plan (SEP).

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14
Q

concurrently

A

The preparation of the SEMP and the system specification should be accomplished ______ in a coordinated manner.

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15
Q

system specification

A

The ___________ (Type A) contains the highest-level architecture and forms the basis for the preparation of all lower-level specifications in a top-down manner.

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16
Q

technology applications

A

In considering alternative system design approaches, different technology applications are investigated.

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17
Q

evaluated

A

Technology applications are evaluated and, in some instances where there is not enough information available (or a good solution is not readily evident), research may be initiated with the objective of developing new knowledge to enable other approaches.

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18
Q

operational characteristics

A

The identification of alternatives and feasibility considerations will significantly impact the ________ of the system and it design for constructability, producibility, supportability, sustainability, disposability, and other design characteristics.

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19
Q

operational scenario

A

Once the need and technical approach have been defined, it is necessary to translate this into some form of an _________, or a set of operational requirements.

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20
Q

system

A

_______ operational requirements should be identified and defined early, carefully, and as completely as possible, based on an established need and selected technical approach.

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21
Q

Mission Definition

A

Identification of the prime and alternate or secondary missions of the system.

22
Q

dynamics

A

It is important that the ______ of system operating conditions be identified to the extent possible.

23
Q

Performance and physical parameters

A

Definition of the operating characteristics or functions of the system (e.g., size, weight, speed, range, accuracy, flow rate, capacity, transmit, receive, throughput, etc.)

24
Q

Operational deployment or distribution

A

Identification of the quantity of equipment, software, personnel, facilities, and so on and the expected geographical location to include transportation and mobility requirements.

25
Q

Operational life cycle (horizon)

A

Anticipated time that the system will be in operational use (expected period of sustainment).

26
Q

Utilization requirements

A

Anticipated usage of the system and its elements (e.g., hours of operation per day, percentage of total capacity, operational cycles per month, facility loading).

27
Q

Effectiveness factors

A

System requirements specified as figures-of-merit (FOMs) such as cost/system effectiveness, operational availability (A0), readiness rate, dependability, logistic support effectiveness, mean time between maintenance (MTBM), failure rate, maintenance downtime (MDT), facility utilization (in percent), operator skill levels and task accomplishment requirements, and personnel efficiency.

28
Q

Environmental factors

A

Definition of the environment in which the system is expected to operate (e.g., temperature, humidity, arctic or tropics, mountainous or flat terrain, airborne, ground, or shipboard).

29
Q

interoperability requirements

A

In addition to defining operational requirements that are system specific, the system being developed may be imbedded within an overall higher-level structure making it necessary to give consideration to ___________.

30
Q

integrated basis

A

To realize the overall benefits of systems engineering, it is essential that all elements of the system be considered on an ______ from the beginning.

31
Q

support concept

A

The maintenance and __________ developed during the conceptual design phase evolves from the definition of system operational requirements.

32
Q

levels of maintenance

A

Corrective and preventative maintenance may be performed on the system itself (or an element thereof) at the site where the system is operating and used by the customer, in an intermediate shop near the customer’s operational site, and/or at a depot or manufacturer’s facility.

33
Q

Repair Policies

A

This may dictate that an item should be designed such that, in the event of failure, it should be nonrepairable, partially repairable, or fully repairable. This should be designed during the conceptual design phase.

34
Q

organizational responsibilities

A

Decisions pertaining to _____________ may affect system design from a diagnostic and packaging standpoint, as well as dictate repair policies, product warranty provisions, and the like.

35
Q

maintenance support elements

A

These include supply support (spares and repair parts, associated inventories, and provisioning data), test and support equipment, personnel and training, transportation and handling equipment, facilities, data, and computer resources.

36
Q

effectiveness requirements

A

These constitute the effectiveness factors associated with the supply capability.

37
Q

environment

A

This includes the impact of external factors such as temperature, shock and vibration, humidity, noise, arctic versus tropical applications, operating in mountainous versus flat terrain country, shipboard versus ground conditions, and so on, on the design of the maintenance and support infrastructure.

38
Q

maintenance concept

A

The __________ provides the foundation that leads to the design and development of the maintenance and support infrastructure and defines the specific design-to-requirements for the various elements of support.

39
Q

interfaces

A

When defining the maintenance concept, it is important that consideration be given to the _______ that may exist between the support requirements and infrastructure for the new system being developed and those comparable requirements for other systems that may be contained within the same overall system-of-systems configuration.

40
Q

technical performance measures (TPMs)

A

These are quantitative values (estimated, predicted, and/or measured) that describe system performance.

41
Q

design-dependent parameters (DDPs)

A

These are quantified and are the basis for the determination of TPMs. During conceptual design, these values are best determined by parametric methods.

42
Q

quality function deployment (QFD)

A

This is a tool that can be applied to aid in the establishment and prioritization of TPMs.

43
Q

attributes

A

Customer requirements are defined and classified as _______, which are then weighted based on the degree of importance.

44
Q

house of quality (HOQ)

A

The QFD process involves constructing one or more matrices, the first of which is often referred as the __________.

45
Q

translation

A

The QFD method is used to facilitate the _______ of a prioritized set of subjective customer requirements into a set of system-level requirements during conceptual design.

46
Q

risk

A

One of the largest contributors to ____ is the lack of a good set of requirements and an adequate system specification.

47
Q

functional description

A

An essential activity in early conceptual and preliminary design is the development of a ________ of the system to serve as a basis for identification of the resources necessary for the system to accomplish its mission.

48
Q

function

A

A ________ refers to a specific or discrete action (or series of actions) that is necessary to achieve a given objective; that is, an operation that the system must perform, or a maintenance action that is necessary to restore a faulty system to operational use.

49
Q

functional analysis

A

The _________ is an iterative process of translating system requirements into detailed criteria and the subsequent identification of the resources required for system operation and support.

50
Q

system architecture

A

The purpose of the functional analysis is to develop the top-level ________, which deals with both “requirements” and “structure”.

ENTD412 - Systems Engineering (1 decks)

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