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Aerospace blockset >> Blocks > SECULAR_J2

SECULAR_J2

This Xcos block allows for propagation of Keplerian orbital elements from epoch time to the current time including the secular J2 effects only.

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Description

Block allows for propagation of Keplerian orbital elements from epoch time to the current time including the secular J2 effects only. The secular effects of J2 consist in drifts on periapsis argument, right ascension of ascending node and mean anomaly. See CL_op_driftJ2 for more details. Iniitial keplerian elements, epoch time and current time should be provided via block inputs. Event input activates propagation. Classical Keplerian arguments (in order used in block input) are:

  • sma : semi-major axis [m]

  • ecc : eccentricity

  • inc : inclination [rad]

  • pom : periapsis argument [rad]

  • raan : right ascension of ascending node [rad]

  • anm : mean anomaly [m]

  • Data types

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    Interfacing function

    Computational function

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