Fundamental Technologies

Cassini MIMI Pages

MIMI/LEMMS Simplified 180 Degree End Geometry

MIMI/LEMMS Geometrical Factor Summary

Dir ID First Area Name Area
mm2
Rad.
mm
ID

Second Area
Name

Area
mm2
Rad.
mm
Sep
mm
K
mm2
G
mm2-sr
Logic Active Passive Cone
Deg.
Edge
Deg.
180 1 Aperture Plane 2376 27.5 2 Inner Shield 153.9 7.0 71 5846. 62.63     62.63 21. 26
180 1 Aperture Plane 2376 27.5 3 D1(150) 100 5.6 75 6413. 37.07 D1   37.07 20. 24
180 1 Aperture Plane 2376 27.5 4 D2(700) 150 6.9 78.5 6966. 51.20 D2   51.20 19. 24
180 1 Aperture Plane 2376 27.5 5 D3a(700) 150 6.9 84 7860. 45.37 D3a   45.37 18. 22
180 1 Aperture Plane 2376 27.5 6 D3b(700) 150 6.9 86 8200. 43.48 D3b   43.48 18. 22
180 1 Aperture Plane 2376 27.5 7 D4(700) 150 6.9 90 8904. 40.04 D4   40.04 17. 21
0 10 Inner Collim. 572.6 13.5 8 B(700) 35 3.3 116 13649. 1.47 B   1.47 7.  
0 10 Inner Collim. 572.6 13.5 9 A(150) 25 2.8 112 12734. 1.12 A   1.12 7.  
0 9 A(150) 25 2.8 8 B(700) 35 3.3 4 35. 27.04 AB 27.04 1.12 7. 35.
0 9 A(150) 25 2.8 11 Throat 78.54 5.0 18 357. 5.51 AB(D4) 27.04 1.12 7.  
0 9 A(150) 25 2.8 7 D4(700) 150 6.9 22 540. 6.96 ABD4 6.96 1.12 7.  
180 1 Aperture Plane 2376 27.5 3 D1(150) 100 5.6 75 6413. 37.07 D1(D2)   37.07 20. 24.
180 3 D1(150) 100 5.6 4 D2(700) 150 6.9 3 89. 229.69 D1D2 229.69 37.07 19. 77.
180 3 D1(150) 100 5.6 6 D3b(700) 150 6.9 10 180. 87.89 D1D2D3 87.89 37.07 18. 51.
180 3 D1(150) 100 5.6 4 D2(700) 150 6.9 3 89. 229.69 D1D2(D3) 229.69 37.07 19. 77.
180 4 D2(700) 150 6.9 6 D3b(700) 150 6.9 7 144. 177.91 D2D3 177.91 51.20 18. 63.
180 4 D2(700) 150 6.9 7 D4(700) 150 6.9 10 195. 122.93 D2D3(D4) 177.91 51.20 18. 54.
180 4 D2(700) 150 6.9 7 D4(700) 150 6.9 10 195. 122.93 D2D3D4 122.93 51.20 17.. 54.
180 4 D2(700) 150 6.9 8 B(700) 35 3.3 29 900. 5.84 D2D3D4(B) 122.93 51.20 17. 19.
            (D1)D2(D3) 150                  
180 4 D2(700) 150 6.9 6 D3b(700) 150 6.9 7 144. 177.91 (D1)D2D3(D4) 177.91 51.20 18. 63.
180 5 D3a(700) 150 6.9 8 B(700) 35 3.3 25 684. 7.69 D3D4B 7.69   17. 22.
180 7 D4(700) 150 6.9 8 B(700) 35 3.3 19 420. 12.54 D4B 12.54   17. 28.
             E1(300)                    
             F1(700)                    
             E1(E2)                    
             F1(F2)                    

Notes:

1. K = R1^2 + R2^2 + L^2 appears in the expression for G=0.5*PI^2*(A-SQRT(A-4.*R1^2*R2^2))
2. Bold Geometrical Factors are recommended for adoption as nominal based on a combination of active and passive definitions.

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Updated 6/19/08, T. Hunt-Ward
tizby@ftecs.com