I'm from Germany and I made a lot of smaller rockets the last 10 years.
But now I wanna built a bigger one
The plan is a rocket engine with a ID of 45mm(1,77inch) and a length of 400mm(15,748").
I wanna use Rocket Candy with Sorbitol instead of regular sugar due to the higher viscosity of the Kno3/Sorbitol mixture.
Which ratio do you reccomend? 65:35 or better 60:40?
And how much fuel do I need? Do you think that one kg(2,2lbs) is enough?
I will cast it straight into the tube in one solid block. No separate grains.
And the most important question: Which nozzle size do you think will make the job well? I would say a diameter of 15mm(0,590inch), because that is 1/3 of the internal diameter.
The nozzle itself is casted out of plaster(gypsum) and is screwed in the tube.
Thank you for your support!