# Proposed Starship

#### Aiea-Geoff

proposed starship

10 years ago I proposed a space transport system system. The goal was clear: colonize Alpha Centauri. The result was a possible round-trip in only 7 1/2 years. In our lifetime. I wrote up my proposal and posted it on my website:

http://hicon.us/gpage25.html

Last year, after a decade of additional thought, I updated my proposal and posted it as a YouTube video:

View: https://youtu.be/te05o_hQ_l8

I would appreciate any constructive, and or destructive criticism, on my ideas. Thank you.

#### billslugg

There is insufficient energy released by fusion to provide the power you need.
If you acellerate to .95 c your speed is 285 million meters per second. Square that and divide by half to get kinetic energy per kilogram. This is 4x10^16 joules per kilogram. A klilogram of mass has 9x20^16 joules of energy within. You must have four times that energy to acellerate from Earth, slow down at Alpha Centauri, acellerate back home, stop at Earth. Fission gives but 0.1% of the fuel's mass to energy. Fusion gives but 1.1% conversion. You need 178% conversion of your entire spaceship to energy. You would have to figure out how to obtain energy during your trip.