[GURPS Spaceships] Laser rocket engines

joelbf · 09-22-2007, 01:34 PM

Ok, I really miss the Laser rocket engines. So here's my try at deriving them from THS:

Reaction Engine, Laser Rocket (TL 9) [REAR]

Laser rockets uses a ground based laser battery that evaporates reaction mass producing thrust. Each Laser Rocket engine must be powered by a laser battery, 10 GW for sm+5, 30 GW for sm +6, 100 GW for sm+7, 300 GW for sm+8 etc (the standard 1-3-10 progression). Each engine produces 2G of thrust, and each fuel tank of ablative plastic propellant gives 0,45mps of delta-V.

Cost for the spaceship part of the engine is as a chemical rocket of same size, ablative plastic costs $200/ton.

So what do you all think?

09-22-2007, 01:34 PM	#1
joelbf Join Date: Mar 2005 Location: Stockholm, Sweden	[GURPS Spaceships] Laser rocket engines Ok, I really miss the Laser rocket engines. So here's my try at deriving them from THS: Reaction Engine, Laser Rocket (TL 9) [REAR] Laser rockets uses a ground based laser battery that evaporates reaction mass producing thrust. Each Laser Rocket engine must be powered by a laser battery, 10 GW for sm+5, 30 GW for sm +6, 100 GW for sm+7, 300 GW for sm+8 etc (the standard 1-3-10 progression). Each engine produces 2G of thrust, and each fuel tank of ablative plastic propellant gives 0,45mps of delta-V. Cost for the spaceship part of the engine is as a chemical rocket of same size, ablative plastic costs $200/ton. So what do you all think?