Kippzonen CM 121 B/C Shadow Ring Manuel d'utilisateur télécharger pdf (Page 25)

6. APPENDIX

Instruction manual CM 121

The influence of the sliding bar parts rising above the horizon is neglected.

To compare: the formula for a flat shadow band is

S = 2W . cos3 . D . (U

. sinB . sinD + sinU

. cosB . cosD) / π. R (6.9)

W is the ring width and R is the ring radius. A comparison is shown in figure 6.

figure 6 the view angle of the U-profile shadow ring as a function of the solar declination, in

comparison to a conventional flat shadow band. It is shown that the CM 121B has superior

performance, as a result less seasonally variation of errors.

1 2 ... 20 21 22 23 24 25 26 27

Pas de commentaire

Kippzonen CM 121 B/C Shadow Ring Manuel d'utilisateur Page 25