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Wasmer Consulting BaseOps User's Guide Editing Military Training Routes
A military training route (MTR) is a long, relatively narrow volume of airspace that aircraft operate in when traveling between two locations. Horizontally, an MTR is defined by a series of line segments denoting the centerline of the MTR, along with a width that can vary with location along the MTR centerline. Vertically, an MTR is defined by a floor height.
In BaseOps, an MTR is defined by 2 or more segment points. Each adjacent pair of segment points defines one straight segment of the MTR.
MTRs are used by the MRNMap noise model. Unless that model is selected, the parts of the BaseOps user interface dealing with MTRs will be hidden. See Noise Models.
BaseOps can import MTRs from DAFIF. See Importing Information from DAFIF.
MTRs have the following properties.
Name - A short (10 characters maximum) name that uniquely and unambiguously identifies the MTR.
Long Name - A one-line (80 characters maximum) name for the MTR. The long name can be more descriptive than the short name. It is optional: if you do not supply a long name, the short name will be used in its place when necessary.
Notes - Miscellaneous information about the MTR. There is no restriction on the length of notes. Press the Enter key to insert additional lines.
Length - The length of the MTR's centerline. The length is automatically updated as you edit the MTR.
You can change the units used to specify the length: see Setting the Case's Physical Units.
Segment Points - An MTR's segments are specified using a table, where each table row represents a segment point. An MTR must consist of at least one segment, so a minimum of two segment points must be supplied.
The following table columns are defined.
Coordinates - The geographic location of this segment point.
Zero-length segments are not allowed: i.e., adjacent segment points in the table must not have the same coordinates.
You can change the coordinate system used to specify locations: see Setting the Case Coordinate System.
Turn Radius - The radius of the turn to the next segment point. It is not unusual for MTR turn radiuses to be zero, and for an MTR to contain a mixture of both zero-radius and non-zero-radius turns.
The turn begins at the location specified in the Coordinates column. The angle of the turn is automatically calculated based upon the coordinates of the next segment point.
You can change the units used to specify MTR turn radiuses: see Setting the Case's Physical Units.
Right Width - The width of the MTR to the left and right of the MTR's centerline. Left and right are interpreted from the perspective of the pilot of an aircraft that is flying along the MTR from beginning to end. Zero widths are allowed.
You can change the units used to specify MTR widths: see Setting the Case's Physical Units.
The current version of MRNMap does not support segments that have different left and right widths. It is expected that in the future, a version of MRNMap without this limitation will become available.
Width Variation - How the MTR width varies along the segment. If the variation is constant, then the width is constant along the entire segment. If the variation is linear, then the width varies linearly with distance along the segment centerline; at the end of the segment, the width is equal to the width specified by the next segment point.
The width variation is ignored in the last row of the table.
The current version of MRNMap ignores the width variation settings in the MRNMap input file, and treats all segments as if their width variation is constant. It is expected that in the future, a version of MRNMap without this limitation will become available.
Turn Exit Floor - The floor is the minimum allowed flight level for an MTR segment. Type the height, then select whether the height is above ground level (AGL) or above mean sea level (MSL).
For turns with non-zero radius, the floor descends to the turn exit floor linearly through the turn. The turn exit floor is then used for the remainder of this segment, up until the next segment point.
For turns with zero radius, the turn exit floor is not applicable.
You can change the units used to specify heights: see Setting the Case's Physical Units.
Notes - Miscellaneous information about this MTR segment. There is no restriction on the text that can be typed into this box. The notes are not used by the noise models; they are for your use to record any information you believe is relevant.
In the segment points table, the triangle icon indicates the selected segment point. To select another point, either click somewhere on that point's row, or navigate to that point using the Tab key. Alternatively, click on that point on the map using the Select and Edit mouse tool .
To add a new segment point, either press the Add New Point button , or press Ctrl + A. Alternatively, use the Add mouse tool to add new points by clicking on the map. New points are added to the MTR after the selected point.
When editing MTRs on the map, you will often find yourself switching back and forth between using the Select and Edit and the Add mouse tools. As a convenience in such situations, hold down the Ctrl key to make the Add mouse tool temporarily act like the Select and Edit mouse tool, and vice versa.
When you add a new segment point, BaseOps duplicates the selected point. If desired, you can use the quick-add feature, which lets you efficiently add a segment point while simultaneously specifying its properties. To add a point, type a quick-add command into the text box, then press the Add New Point button or the Enter key.
The quick-add commands are somewhat cryptic, but once learned, they allow you to add segment points very quickly. Frequent users will find it worthwhile spending a few minutes learning the quick-add commands. To display a list of the quick-add commands that you can use, either press the Quick-Add Hints button , or press Ctrl + H.
To delete the selected segment point, either press the Delete Point button , or press Ctrl + Del.
To move the selected point up or down in the table, press the Move Up and Move Down buttons and , or press Ctrl + U and Ctrl + D.
Using the Select and Edit map tool, you can graphically edit a MTR's segments. See The Select and Edit Mouse Tool for more information.
When you are editing an MTR, BaseOps marks the segment points on the map. This makes it easier to edit the MTR using the mouse tools.
The upper-right segment point, highlighted in yellow, is the selected point.
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