CL_man_dvSma

Description

• Delta-v required to change the semi major axis by one maneuver at the peripasis or apoapsis.

  The output argument dv is the velocity increment in cartesian coordinates in the "qsw" local frame.

  anv is the true anomaly at the position of the maneuver.

  If the argument res is present and is equal to "s", all the output data are returned in a structure.

• Note: The results are set to %nan if the targeted semi major-axis is unreachable.

Parameters

ai :

Initial semi major axis [m] (1xN or 1x1)

ei :

Initial eccentricity (1xN or 1x1)

af :

Final semi major axis [m] (1xN or 1x1)

posman:

(optional) Flag specifying the position of the maneuver: 0 or "per" -> periapsis, 1 or "apo" -> apoapsis. Default is at the periapsis. (1xN or 1x1)

mu :

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

res :

(string, optional) Type of output: "d" or "s" for . Default is "d".

deltav :

Norm of velocity increment. [m/s] (1xN)

dv :

Velocity increment (in cartesian coordinates) in the "qsw" local frame [m/s] (3xN)

anv :

True anomaly at the position of maneuver [rad] (1xN)

man :

Structure containing all the output data.

Authors

• CNES - DCT/SB

See also

• CL_man_dvBiElliptic

• CL_man_dvHohmann

• CL_man_dvHohmannG

Examples

ai = 7200.e3; af = 7000.e3; ei = 0.1; [deltav,dv,anv] = CL_man_dvSma(ai,ei,af) // Check results : kep = [ai ; ei ; %pi/2 ; 0 ; 0 ; anv]; // mean anomaly = true anomaly CL_man_applyDvKep(kep,dv)