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## Main Question or Discussion Point

Hi, I am currently working on a Hybrid Rocket which uses fuel grain as 3-D printed ABS and oxidizer as N2O, but i need to calculate some basic parts such as required thrust to reach specific altitude. I want to calculate the required thrust to reach 1.5km for 10kg rocket with 7cm radius. It will launched 85 degrees vectircally. I want you to guys who is interseting model rockets, tell me which procedure should I follow, such that the given information about this rocket is enough to calculate the required thrust or not, do i need to calculate any other quantities to obtain required thrust or any other ideas to approach to this problem ?

Thank You,

Thank You,