Session 2.3: Mission Profile & Groups

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Session 2.3: Mission Profile & Groups

SESSION 2.3 OUTLINE

2.3.1 Mission Success Metrics: System Flow Properties 2.3.2 Functional Profile 2.3.3 Duty Cycles 2.3.4 Mission Profile Groups 2.3.5 Mission Profile Definition Reports

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Session 2.3: Mission Profile & Groups

DISCUSSION 2.3 MISSION PROFILE & GROUPS

This session will focus on aspects of the Mission Profile that are solution-specific :

1. Functional Profile for each Mission Profile
2. Duty Cycles
3. Mission Groups

Since the system model is now defined the mission profile from Session 1.4 can be further developed and applied to the system

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Session 2.3: Mission Profile & Groups

EXERCISE 2.3.1 MISSION SUCCESS METRICS: SYSTEM FLOW PROPERTIES

Open Mission Profile Definition (Menu: Modeling > Mission Profile Definition) Open Regular Trip in the Mission Profile Manager Navigate to the Mission Success Metrics tab Select check boxes for both Convert Mechanical � rotational Angular velocity functions

Note: Selected flow properties are included in the Functional Profile page

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Session 2.3: Mission Profile & Groups

DISCUSSION 2.3.2 FUNCTIONAL PROFILE

This page associates system functions to mission success metrics � both related to mission phases Acceptable upper/lower limits for each individual function per phase This page is used to determine importance of each success metric is for each mission phase This page is output in the Mission Profile & Mission Effective Functions List (MEFL) reports

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Session 2.3: Mission Profile & Groups

EXERCISE 2.3.2 FUNCTIONAL PROFILE

To set the Functional Profile:

Navigate to the Functional Profile tab Enter the acceptable limit values below Set functional importance for each phase as shown below

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Session 2.3: Mission Profile & Groups

DISCUSSION 2.3.3 DUTY CYCLES

This table defines the time duration each model item is operating for a mission profile Duty cycle is entered based on a percentage of each mission phase Duty cycles inheritance is top-down

   E.g. A subsystem operates for 50% of a mission phase
   One item within the subsystem operating with a 50% duty cycle = 25% of the mission phase duration

Duty cycle % is translated into `duration of operation' used for RAM analyses Duty cycles will lead into residual life estimation

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Session 2.3: Mission Profile & Groups

EXERCISE 2.3.3 DUTY CYCLES

To set duty cycles:

   Select the `Driveline' and in `Ignition' and set it to: 0%
   Select the `Driveline' and in `Acceleration' and set it to: 100%
   Select the `Driveline' and in `Shut-down' and set it to: 0%
   Set the `Power Generation' and in `Ignition' and set it to: 50%
   Set the `Power Generation' and in `Acceleration' and set it to: 100%
   Set the `Power Generation' and in `Shut-down' and set it to: 50%

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Session 2.3: Mission Profile & Groups

DISCUSSION 2.3.4 MISSION PROFILE GROUPS

Mission Profile Group allows aggregation of multiple mission profiles Groups are important for performing trade studies on reliability or maintenance costs for longer timespans Mission profiles can be stored and changed on demand to run new analyses later Mission Profile Groups are also used earlier in design for mission planning

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Session 2.3: Mission Profile & Groups

EXERCISE 2.3.4 MISSION PROFILE GROUPS

To create a new group:

Create a second mission profile using the following steps

  Navigate to the Overview/Management tab
  Copy the Regular Trip mission & rename the copy as Long Trip
  Set Mission Cycles to 4

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Session 2.3: Mission Profile & Groups

EXERCISE 2.3.4 MISSION PROFILE GROUPS (CONTINUED)

Select in the Overview/Management page

Select both Regular Trip and Long Trip missions in the Mission Profile Groups table

Set Group Cycles of the Regular Trip to 50

Set Group Cycles of the Long Trip to 5

Note: Selecting the Use proportional mission durations check box enables user to edit Group Ratio column

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Session 2.3: Mission Profile & Groups

EXERCISE 2.3.4 MISSION PROFILE GROUPS (CONTINUED)

Set this New Group as the Active Mission Profile in the Overview/Management page Right-click on the new group and select Set as Active Mission Profile Verify item duration of operations now reflect currently assigned Mission Group

  Open the Advanced Properties of any item in the model
  View Operational section of Advanced Properties page

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Session 2.3: Mission Profile & Groups

DISCUSSION 2.3.5 MISSION PROFILE DEFINITION REPORTS

There are 2 mission reports & 2 environment reports to output Mission Profile/Group data:

1. Mission Effective Functions List (MEFL)

   This report details the critical components for a capability in a Mission Profile / Mission Group

2. Mission Profile Report

   This report presents general outcomes of a selected Mission Profile / Mission Group (mission details, operating scenarios, defined objectives and capabilities, operating modes, and environmental profile)

3. Operating Environment Report

   This report shows selected environments, environmental factors, ratings & system sensitivity details

4. Operating Environment Comparison Report

   This report provides a comparative analysis of two or more selected Operating environments which compares environmental factors

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Session 2.3: Mission Profile & Groups

SESSION 2.3 SUMMARY

2.3.1 Mission Success Metrics: System Flow Properties 2.3.2 Functional Profile 2.3.3 Duty Cycles 2.3.4 Mission Profile Groups 2.3.5 Mission Profile Definition Reports