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Path: SC/Disturbances
% Calculate the drag force assuming constant area. Uses the scale height atmosphere model (AtmDens2). Assumes the area is pointed along the velocity vector at all times. If a Julian date is entered it will account for the effect of Earth rotation on the relative velocity. This is the simplest drag force model. For a simple model that takes attitude into account, see CubeSatAero. For the full model using the CAD tools see Disturbances. -------------------------------------------------------------------------- Form: force = AeroDragForce( x, area, cD, jD ) -------------------------------------------------------------------------- Inputs ------ x (6,1) State [r;v] area (1,1) Area (m2), default 1.0 cD (1,1) Coefficient of drag, default 2.2 jD (1,1) Julian date Outputs ------- force (N) Force in the ECI frame -------------------------------------------------------------------------- See also: AeroF, AtmDens2, Disturbances --------------------------------------------------------------------------
AerospaceUtils: AtmosphericCalculations/AtmDens2 AerospaceUtils: Coord/ECIToEF Common: Graphics/Plot2D Common: Graphics/TimeLabl Common: Time/Date2JD Common: Time/JD2Array Common: Time/JD2T Math: Linear/Mag Math: Linear/Skew Math: Linear/Unit SC: BasicOrbit/RVFromKepler SC: Disturbances/AeroF
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