ESA Document - Emits - ESA

s
Cd, Cl
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
0 10 20 30 40 50 60 70 80 90
4.4.2.3.1 Heat flux compilation
Angle of Attack
Figure 4-81: Aerodynamic coefficients vs Angle of Attack for Mach 7
CD
CL
L/D
4
3.5
3
2.5
2
1.5
1
0.5
HMM
Assessment Study
Report: CDF-20(A)
February 2004
page 340 of 422
An aerothermodynamic computation was performed looking at two extreme cases with the
following parameters:
Initial velocity: 3369 m/s
Entry angle: -4.9 d and -25 d
L/D: 0.3
The computations have been made using the MarsGramm 2001 atmospheric model.
Figure 4-82 and Figure 4-83 show the collective heat fluxes and the heat loads for the two cases:
Figure 4-82: Total Heat flux versus time
L/D