Segment Configuration Profiles

A segment configuration profile changes a segment within the target sequence. There are seven types of segment configuration profiles that you can use in a target sequence:

Change Maneuver Type

The Change Maneuver Type profile changes a maneuver from impulsive to finite or from finite to impulsive. This action does not copy parameters from the previous type to the new type.

Field Description
Segment Select the segment to be changed.
Type to change to Select the type of maneuver that you want the segment to become.

Change Propagator

The Change Propagator profile changes the propagator used by a segment.

Field Description
Segment Select the segment to be changed.
New Propagator Select the propagator that you want the segment to use.

Change Return Segment

The Change Return Segment profile sets the state of a Return segment.

Field Description
Mode Select whether the profile is active or not active.
Segment Select the segment to be modified.
State Specify the state of the segment:
  • Enable
  • Disable
  • Enable (except Profiles bypass)

Change Stop Segment

The Change Stop Segment profile sets the state of a Stop segment.

Field Description
Mode Select whether the profile is active or not active.
Segment Select the segment to be modified.
State Specify the state of the segment:
  • Enable
  • Disable

Change Stopping Condition State

The Change Stopping Condition State profile sets the state of a stopping condition.

Field Description
Mode Select whether the profile is active or not active.
Segment Select the segment to be modified.
State Specify whether the stopping condition is enabled or disabled.
Trigger Select the stopping condition to be modified.

Run Target Sequence Once

The Run Target Sequence Once profile executes a nominal run of the Target Sequence. This run initializes the values for each of the segments, which enables the Scripting Tool to use them. This profile does not have a properties window. Select Active or Not Active in the Mode field in the profiles table.

Seed Finite Maneuver

The Seed Finite Maneuver profile converts an impulsive maneuver to a finite maneuver.

How To...Define a finite maneuver from an impulsive maneuver with Astrogator

Astrogator applies the results of the last run of the impulsive maneuver to each corresponding parameter of the finite maneuver. The results are based on the parameters (including the engine model and thruster set) that you specified for the impulsive maneuver. If you did not specify a duration stopping condition for the finite maneuver, then Astrogator creates one based on the estimated burn duration of the impulsive maneuver. Astrogator adds this new duration stopping condition to the list of stopping conditions. In either case, Astrogator makes all other stopping conditions inactive unless you enable the option to leave other stopping conditions active.

The following is a description of the finite maneuver seeding process and data.Closed

When a finite maneuver is seeded from an impulsive maneuver, Astrogator executes the follow process:

  1. It copies the impulsive maneuver data into the finite maneuver. If you used actual values to define the impulsive maneuver, Astrogator copies those values to the finite maneuver. Otherwise, it copies default values. This data comprises the following:
    • Engine model(s)
    • Thruster set
    • Impulsive Delta-V vector (Cartesian and spherical values)
    • Delta-V vector representation choice (Cartesian or spherical)
    • Quaternion values
    • Euler angle values
    • Attitude type
    • Attitude 'override' choice (from the More Options... window)
    • Attitude lead and trail durations
    • Body Constraint Vector (BCV) values, BCV (selected VGT vector), and BCV sign
    • Engine direction
    • Attitude file path, time offset, and interpolation order
  2. If you did not specify a duration stopping condition for the finite maneuver, then Astrogator creates one using the estimated burn duration based on the impulsive maneuver. Astrogator adds this new duration stopping condition to the list of stopping conditions. In either case, Astrogator makes all other stopping conditions inactive unless you enabled the option to leave other stopping conditions active.
  3. Astrogator normalizes the thrust vector.