Difference between revisions of "Template:VT"

Revision as of 05:48, 31 May 2015

This page or section is in need of being brought up to date. Please help Kerbal Space Program Wiki by fixing inaccurate or outdated information. This is almost certainly outdated due to the atmospheric physics changes in 1.0.

{{VT | planet = Kerbin | alt = 0}}

This template calculates terminal velocity of an object given the planet and the altitude from the planet's surface. It uses {{Body data}} with the properties mass, radius, pressure and scale height.

${\displaystyle v_{T}={\sqrt {\frac {250{\frac {\text{kg}}{{\text{m}}^{2}}}\cdot GM}{(a+r)^{2}\cdot \rho \cdot d}}}}$

${\displaystyle \rho =1.2230948554874{\frac {\text{kg}}{{\text{m}}^{3}\cdot {\text{atm}}}}\cdot p_{0}\cdot e^{\frac {-a}{H}}}$

(M is the mass of the body, r is the body's radius, p₀ is pressure at 0 m altitude (“sea level”), a is the altitude above sea level and H is the scale height)

The formula assumes that the coefficient of drag (d) is 0.2 and is used from the atmosphere article.