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SUPPORT SITE |
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Path: SCPro/Landers
% Bilinear tangent law in vector form for orbit insertion or landing. Generates a vector given an orbit's r and v vector. r and v are used to determine the orbit plane. Type BilinearTangentVector for a demo of a lunar takeoff. Units may be of any type as long as they are consistent. Since Version 11 -------------------------------------------------------------------------- Form: [w, t, q] = BilinearTangentVector( r, v, g, a, h, n, opt, type ) -------------------------------------------------------------------------- ------ Inputs ------ r (3,1) Orbit vector ECI v (3,1) Orbit velocity ECI g (1,1) Surface acceleration a (1,1) Engine acceleration h (1,1) Final or initial altitude n (1,1) Number of steps opt (1,:) fminsearch options type (1,1) 0 = takeoff, 1 = landing ------- Outputs ------- w (3,n) Thrust vector ECI t (1,n) Corresponding time vector q (4,n) Quaternion from ECI to the thrust vector --------------------------------------------------------------------------
AerospaceUtils: Coord/QLVLH Common: Database/Constant Common: Graphics/Plot2D Common: Graphics/TimeLabl Common: Quaternion/QTForm Math: Linear/Mag SCPro: Landers/BilinearTangentLaw
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