• Summary of changes
• Highlighted features by module
• Change List

Summary of changes in v2018.1

Over 70 new functions were added in Version 2018.1 and updates to dozens of existing functions were made to improve their performance and expand their applications. We expanded our support for spacecraft thermal system design. This includes functions for heat exchangers, Brayton cycle heat engines and internal flow. MLI models were added. Several new component models were added for use with the CAD modeling functions. These included rings, tubes, cones, parabolic reflectors and delta wings.

We have added all new star identification functions. These are based on a pyramid star identification algorithm using four stars for a definitive match during lost-in-sky conditions. An improved centroiding algorithm has been added. In addition we have added new star catalog functions.

Several new mission plannings tools are in 2018.1. These include straight line functions that are very useful for moderate thrust continuous thrust missions. These include constant acceleration and constant thrust models.

New Feature Highlights by Module

• AerospaceUtils
• Five new CAD component models
• Common
• Graphics helper function TextInBox
• Missions
• New AlphaCentauriMissionDesign for interstellar mission design
• Orbit
• The straight line functions for rapid misison design:
  • InterstellarAsteroid.m
  • MassFuelElectricConstantPower
  • MassFuelElectricConstantUE
  • MassFuelElectricConstantThrust
  • StraightLineConstantAccel
  • SwitchTime
• Propulsion
• SpecificPower calculates the specific power for an electrical propulsion system with separate engines and power sources
• SC
• RMoonECI and RSunECIhelper functions
• SCPro
• A new sun pointing attitude target generator SunVectorPointing
• SpacecraftEstimation
• New function for Doris MeasDoris and a demo UKFOrbitEstimationDoris
• New star catalog functions including AssessCatalog,DisplayCatalog,RearrangeCatalog and others
• New centroiding algorithms, CentroidCOM,Blobify, used in functions StellarAttDetUKF and StellarAttDetEKF and demos AttDetUKFSim and AttDetEKFSim
• Thermal
• New BraytonWithRecuperator function
• New RadiationShapeFactor function
• New fluid flow functions AbsoluteViscosity,FrictionLaminar,KinematicViscosity
• New thermal analysis functions RadiationShapeFactor,HeatExchanger,HeatExchangerWithLosses,PressureDropChannel