Star Drives

The "Star Drives" section of Space Travel chapter has the following breakdown:
*Hyperdrive: Hyperdrive, Hypersails, Tachyon Drive
*Jump Drive: Jump Drive, Wormhole or Keyhole Drive, Probability Drive, Interstellar Teleport Gates
*Warp Drive: Warp Drive, Inertialess Drive, Blink-Warp Drive, Space Highways
GURPS Spaceships adds the concept of an FTL rating which is used in different ways. A parsec is 3.26 light-years or 1191.29 light-days.
*Hyperdrive (parsecs/FTL speed) days duration.
*Jump Drive: (60/FTL rating) minutes of powering up required
*Warp Drive: parsec x FTL speed in a day
==Real world drives==
As Carl Sagan said, relativistic travel opens up the universe only to those who use the ships not the ones who stay home. Two equations are key to this: Time dilation and relativistic mass.
*Time dilation: \sqrt{1 - \frac{v^2}{c^2}}
*Relativistic mass: m_\text{rel} = {m \over \sqrt{1 - \displaystyle{v^2 \over c^2}}} 
==On Faster Than Light Drives==
This is in the development stage.
==References==
*GURPS Space pg 37-42
*"Stardrive Engine" GURPS Spaceships pg 25
Category:Spaceships