Name

CL_mod_expDensity — Exponential density model

Calling Sequence

   [ro]=CL_mod_expDensity(altitude[,prctl,h_ro])
   
   

Parameters

altitude:

altitude [m]

prctl:

(optional) percentile level. Possible values are 1,5,33,67,95,99 and 100 (default is 100)

h_ro:

(optional, exponential model parameter) inverse of scale height (beta) [km^-1] (default is 0.0153)

ro :

air density [kg/m^3]

Description

  • This function returns density value (ro) corresponding to a given altitude according exponential model and with a confidence index given by input percentile (prctl). Other parameters of the exponential model (reference density and altitude) are function of the input altitude and prctl values.
  • Last update : 14/11/2007

Authors

CNES - DCT/SB

See also

CL_mod_atmUS76, CL_mod_expDensityDrag, CL_cw_diffDrag

Bibliography

1 ATV-CC, Technical Note, Mission analysis input data ANNEX (Time, reference frames, conventions and models for mission analysis) [DCT/SB/MS 2004-543]

2 Space Station Program Natural Environment Definition for Desing, International Space Station, Alpha (Revision B, February 8, 1994) [SSP 30425 Revision B]

Examples

altitude=[350000;360000]
[ro]=CL_mod_expDensity(altitude)
[ro]=CL_mod_expDensity(altitude,3.5e-11,405,0.0153)
[ro]=CL_mod_expDensity(altitude,z_zero=406)

See 'CelestLab > Demos > GEOPHYSICS > density_exponential_model' for more examples