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)
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));