[Spaceships] Black powder Rockets?

Marasmusine · 04-17-2018, 03:38 AM

Here's what I think I've worked out for the Estes E9-6.
From their chart, it has 25 N of thrust, an initial weight of 56.7 g and a propellant weight of 35.8 g. Wikipedia says its Isp is 85.51

Its acceleration is 25 / (0.0567 * 9.8) = 45 G

If the whole rocket was a GURPS spaceship, it would have 13 chemical rocket components and 7 fuel tank components. So the acceleration of one chemical rocket is 45 / 13 = 3.46 G

The delta-v per tank is 85.51 / 3000 = 0.03 mps

Does this seem cromulent?

04-17-2018, 03:38 AM	#11
Marasmusine Join Date: Feb 2005 Location: Doncaster, UK	Re: [Spaceships] Black powder Rockets? Here's what I think I've worked out for the Estes E9-6. From their chart, it has 25 N of thrust, an initial weight of 56.7 g and a propellant weight of 35.8 g. Wikipedia says its Isp is 85.51 Its acceleration is 25 / (0.0567 * 9.8) = 45 G If the whole rocket was a GURPS spaceship, it would have 13 chemical rocket components and 7 fuel tank components. So the acceleration of one chemical rocket is 45 / 13 = 3.46 G The delta-v per tank is 85.51 / 3000 = 0.03 mps Does this seem cromulent?