Advances for Radiation Modeling for Earth Re-entry in PARADE: Application to the STARDUST Atmospheric Entry

2012 ◽  
Author(s):  
Heiko Liebhart ◽  
Georg Herdrich ◽  
S. Fasoulas ◽  
H. Roser ◽  
Jim Merrifield ◽  
...  
Keyword(s):  
Atmospheric Entry ◽  
Radiation Modeling

Deceleration system sizing for Martian atmospheric entry

1994 ◽  
Author(s):  
A. Tribble ◽  
J. McKinney ◽  
M. Collier
Keyword(s):  
Atmospheric Entry

Analysis of Nonequilibrium CN Radiation Encountered During Titan Atmospheric Entry

2011 ◽  
Vol 25 (4) ◽  
pp. 493-499 ◽  
Author(s):  
Aaron M. Brandis ◽  
Richard G. Morgan ◽  
Timothy J. McIntyre
Keyword(s):  
Atmospheric Entry

scholarly journals Solar Extreme and Far Ultraviolet Radiation Modeling for Aeronomic Calculations

2021 ◽  
Vol 13 (8) ◽  
pp. 1454
Author(s):  
Anatoliy A. Nusinov ◽  
Tamara V. Kazachevskaya ◽  
Valeriya V. Katyushina
Keyword(s):  
Ultraviolet Radiation ◽  
Input Parameter ◽  
Solar Spectrum ◽  
Upper Atmosphere ◽  
Model Calculations ◽  
Radiation Fluxes ◽  
Main Components ◽  
Comparison Of The Results ◽  
Far Ultraviolet ◽  
Radiation Modeling

Modeling the upper atmosphere and ionospheres on the basis of a mathematical description of physical processes requires knowledge of ultraviolet radiation fluxes from the Sun as an integral part of the model. Aeronomic models of variations in the radiation flux in the region of extreme (EUV) and far (FUV) radiation, based mainly on the data of the last TIMED mission measurements of the solar spectrum, are proposed. The EUVT model describes variations in the 5–105 nm spectral region, which are responsible for the ionization of the main components of the earth’s atmosphere. The FUVT model describes the flux changes in the 115–242 nm region, which determines heating of the upper atmosphere and the dissociation of molecular oxygen. Both models use the intensity of the hydrogen Lyman-alpha line as an input parameter, which can currently be considered as one of the main indices of solar activity and can be measured with relatively simpler photometers. A comparison of the results of model calculations with observations shows that the model error does not exceed 1–2% for the FUVT model, and 5.5% for EUVT, which is sufficient for calculating the parameters of the ionosphere and thermosphere.

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