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Size: 1359
Comment:
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← Revision 4 as of 2013-01-30 21:08:33 ⇥
Size: 1358
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 19: | Line 19: |
| || 3 edge strips area || $ 1.5 * S * D $ || cm^2^ ||<)> 129.90 ||<)> 112.50 || | || 3 edge strips area || $ 1.5 * S * D $ || cm^2^ ||<)> 129.90 ||<)> 112.50 || |
Thinsat Area
Triangular Thinsat area
Assume rounded corners for circular electrochromic thrusters.
Start with two dimensions - thruster diameter D , and thruster-to-thruster spacing S defining the sides of an equilateral triangle within the body of the thinsat. We can decompose the thinsat into three kinds of area:
- the central triangle, between the centers of the thrusters
three outside 120° wedges of thruster
- three outside rectangular strips along the edges of the triangle
thruster to thruster spacing S |
cm |
17.32 |
15.00 |
|
thruster diameter D |
cm |
5.00 |
5.00 |
|
Height |
{ \sqrt{ 3 } \over 2 } S + D |
cm |
20.00 |
17.99 |
Width |
S + D |
cm |
22.32 |
20.00 |
Central Triangle area |
{ \sqrt{ 3 } \over 4 } S^2 |
cm2 |
129.90 |
97.43 |
3 Thruster wedges area |
{ \pi \over 4 } D^2 |
cm2 |
19.63 |
19.63 |
3 edge strips area |
1.5 * S * D |
cm2 |
129.90 |
112.50 |
total area |
cm2 |
279.44 |
229.56 |
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