Name

CL_cw_meanChaser — Mean chaser

Calling Sequence

   [Zm] = CL_cw_meanChaser(Z0,dX0,alt[,er,mu])
   
   

Description

  • When chaser is in circular orbit, coplanar to target orbit, and an impulsional manoeuver in X axis is performed, resultant relative motion is equal to a cycloid. This kind of motion can be formulated with two parameters: "mean chaser" and "excentrical chaser". This fonction computes the mean chaser. The mean chaser corresponds to the semi-major axis and gives the secular motion. Target frame defined in CL_cw_twoImpulse.
  • Last update : 29/10/2009

Parameters

Z0:

altitude of chaser at t=t0 in target frame[m] (1xN)

dX0:

first component of chaser velocity in target frame at t=t0 [m/s] (1xN)

alt:

target altitude (from planet surface) [m] (1xN)

er:

(optional) equatorial radius [m] (default is %CL_eqRad)

mu:

(optional) geocentric gravitational constant [m^3/s^2] (default value is %CL_mu)

Zm:

mean chaser [m] (1xN)

Authors

CNES - DCT/SB

See also

CL_kp_params, CL_cw_twoImpulse

Bibliography

Mecanique spatiale, CNES - Cepadues 1995, Tome II, 16.3.2.4.2

Examples

Z0 = [30 20 15];
dX0 = [7 8 9];
alt = [260000 180000 300000];
zm = CL_cw_meanChaser(Z0,dX0,alt);
zm = CL_cw_meanChaser(Z0,dX0,alt(1));
zm = CL_cw_meanChaser(Z0,dX0(1),alt(3));