CL_man_dvHohmann

Description

• Computes the maneuvers of a Hohmann transfer from an initial circular orbit with semi major axis ai to a final circular orbit with semi major axis af.

  The output argument deltav is the sum of the norms of the velocity increments (|dv1| + |dv2|).

  Velocity increments are expressed in the "qsw" frame.

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

  

Parameters

ai :

Semi-major axis of initial circular orbit. [m] (1xN or 1x1)

af :

Semi-major axis of final circular orbit. [m] (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 :

Som of norms of velocity increments [m/s] (1xN)

dv1:

First velocity increment in cartesian coordnates in the "qsw" local orbital frame [m/s]. (3xN)

dv2:

Second velocity increment in cartesian coordnates in the "qsw" local orbital frame. [m/s] (3xN)

anv1:

True anomaly at the location of the first velocity increment (in the initial orbit): as the initial orbit is circular, anv1 is arbitrarily set to 0. (1xN)

anv2:

True anomaly at the location of the second velocity increment (in the intermediate orbit). [rad] (1xN)

man:

Structure containing all the output data.

Authors

• CNES - DCT/SB

See also

• CL_man_dvHohmannG

• CL_man_dvBiElliptic

• CL_man_dvSma

Examples

// 7200km to 7000km : ai = 7200.e3; af = 7000.e3; [deltav,dv1,dv2,anv1,anv2] = CL_man_dvHohmann(ai,af); // Check results: kep = [ai ; 0 ; %pi/2 ; 0 ; 0 ; anv1]; kep1 = CL_man_applyDvKep(kep,dv1); kep1(6) = anv2; kep2 = CL_man_applyDvKep(kep1,dv2)