ARINC and Equal Apportionment Methods
The following form is shown in the Allocation pane for an assembly when ARINC, Equal Apportionment Components, or Equal Apportionment is selected for Allocation method under Prediction in the System file properties.
The following table describes the data fields in the Allocation pane for the ARINC and two equal apportionment methods. Field availability depends on selections made in various fields.
Field | Description |
|---|---|
Allocation action | The way in which to allocate the failure rate or MTBF value for the assembly. Choices are: • Specify Goal — When selected, the failure rate or MTBF desired for the assembly is entered. Allocation goal type becomes available so that you choose whether you want to supply a a failure rate or MTBF goal. • Perform Allocation — When selected, a weight factor is assigned to each subassembly and/or part as indicated in Weight Factor Assignments. For the top-most assembly, this choice is invalid. |
Allocation goal type | Indicates whether the goal to enter is a failure rate or MTBF value. This field is available when Specify Goal is selected for Allocation action. • Failure Rate — When selected, Allocation goal, FR becomes available so that you can enter the desired failure rate. • MTBF — When selected, Allocation goal, MTBF is available so that you can enter the desired MTBF. |
Allocation goal, FR | The desired failure rate goal for the assembly. This field is available when Failure Rate is selected for Allocation goal type. |
Allocation goal, MTBF | The desired MTBF goal for the assembly. This field is available when MTBF is selected for Allocation goal type. |