AAWSAP DIRD, Aneutronic Fusion Propulsion I, November 2010

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Appendix D: Relativistic Rocket Worksheet
Estimate of the Performance of an
lntersteller Relativistic Space Vehicle
1. Define the Specifi cations for the Rocket
a. Rocket mass
3
°payload:= 370-10 -kg
Assume the same mass as the ISS with a crew of 6.
~ngine := 14-ton
~ngine = 1.27 x
4
LO kg
11\-ocket := °payload + mengine
11\-ocket = 3.827 x
5
10 kg
b. Specific impulse for the engine
Tsp := 0.119-c
I
~
C
= 0.119
2. Define the Requirements for the Mission to Alpha Centauri
a. Assume that the rocket will accelerate halfway to Alpha Centauri at 1 g (earth
gralAtational acceleration), and will decelerate during the last half of the trip at the same
rate.
a:=-g­
1000
a = 9.807 X
- 3m
lQ
-
2
s
ly := c-365-24-3600-s
D := 4.22-ly
Distance to Proxima Centauri in lightyears.
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