Difference between revisions of "Template:VT"
From Kerbal Space Program Wiki
m (Fix constants.) |
m (Moho no longer has an atmopshere, and Jool's scale height is 10 km, not 9.) |
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| Line 1: | Line 1: | ||
<includeonly>{{#</includeonly>expr: <!-- | <includeonly>{{#</includeonly>expr: <!-- | ||
--> ( <!-- | --> ( <!-- | ||
| − | --> 2 * {{G}} * | + | --> 2 * {{G}} * {{#ifeq: {{{planet}}} | Eve | 1.2244127E+23 | <!-- mass |
| − | |||
--> {{#ifeq: {{{planet}}} | Kerbin | 5.2915793E+22 | <!-- | --> {{#ifeq: {{{planet}}} | Kerbin | 5.2915793E+22 | <!-- | ||
--> {{#ifeq: {{{planet}}} | Duna | 4.5154812E+21 | <!-- | --> {{#ifeq: {{{planet}}} | Duna | 4.5154812E+21 | <!-- | ||
| Line 9: | Line 8: | ||
--> }} }} }} }} }} }} <!-- | --> }} }} }} }} }} }} <!-- | ||
--> / ( <!-- | --> / ( <!-- | ||
| − | --> ({{{alt}}} + | + | --> ({{{alt}}} + {{#ifeq: {{{planet}}} | Eve | 700000 | <!--planet radius |
| − | |||
--> {{#ifeq: {{{planet}}} | Kerbin | 600000 | <!-- | --> {{#ifeq: {{{planet}}} | Kerbin | 600000 | <!-- | ||
--> {{#ifeq: {{{planet}}} | Duna | 320000 | <!-- | --> {{#ifeq: {{{planet}}} | Duna | 320000 | <!-- | ||
| Line 17: | Line 15: | ||
--> }} }} }} }} }} }} <!-- | --> }} }} }} }} }} }} <!-- | ||
--> )^2 * <!-- | --> )^2 * <!-- | ||
| − | --> ( | + | --> ( {{#ifeq: {{{planet}}} | Eve | 5 * e^(-{{{alt}}} / 7000) | <!-- atmospheric pressure |
| − | + | --> {{#ifeq: {{{planet}}} | Kerbin | 1 * e^(-{{{alt}}} / 5000) | <!-- | |
| − | --> {{#ifeq: {{{planet}}} | Kerbin | 1 * e^(-{{{alt}}} / 5000) | <!-- | + | --> {{#ifeq: {{{planet}}} | Duna | 0.2 * e^(-{{{alt}}} / 3000) | <!-- |
| − | --> {{#ifeq: {{{planet}}} | Duna | 0.2 * e^(-{{{alt}}} / 3000) | <!-- | + | --> {{#ifeq: {{{planet}}} | Jool | 15 * e^(-{{{alt}}} / 10000) | <!-- |
| − | --> {{#ifeq: {{{planet}}} | Jool | 15 * e^(-{{{alt}}} / | + | --> {{#ifeq: {{{planet}}} | Laythe | 0.8 * e^(-{{{alt}}} / 4000) | <!-- |
| − | --> {{#ifeq: {{{planet}}} | Laythe | 0.8 * e^(-{{{alt}}} / 4000) | <!-- | ||
--> }} }} }} }} }} }} <!-- | --> }} }} }} }} }} }} <!-- | ||
--> ) * (1.2230948554874 * 0.008) * 0.2 * 1 <!-- | --> ) * (1.2230948554874 * 0.008) * 0.2 * 1 <!-- | ||
Revision as of 00:40, 13 January 2013
expr: ( 2 * 6.67408e-11 * }} / ( ({{{alt}}} + }} )^2 * ( }} ) * (1.2230948554874 * 0.008) * 0.2 * 1 ) ) ^ 0.5
| Usage | Produces |
|---|---|
{{VT | planet = Kerbin | alt = 0}} |
100.1288989294 |
This template calculates terminal velocity of an object given the planet and the altitude from the planet's surface. It assumes that the coefficient of drag is 0.2 and that the cross-sectional area is 1 m2. It also assumes that atmospheric density is equal to the atmospheric pressure multiplied by 1.2230948554874 * 0.008.[1]
Notes
- ↑ See the Atmosphere article.
