Adding weight to nosecone

[rsbhunter]

Not looking for a definitive answer, but if I'm using a F40-7w in a (Madcow DX3 2.6" ) rocket, and I add 1 oz weight , is there a big loss of apogee height? I've tried using roc sim, but guys I'll be honest, I'm 69 years old and it's kicking my butt! Thanks for any replies....rsbhunter

 

[Scott_650]

Not looking for a definitive answer, but if I'm using a F40-7w in a (Madcow DX3 2.6" ) rocket, and I add 1 oz weight , is there a big loss of apogee height? I've tried using roc sim, but guys I'll be honest, I'm 69 years old and it's kicking my butt! Thanks for any replies....rsbhunter

For simple 3/4 FNC style rockets Thrustcurve is surprisingly accurate - I typically get TC results within 10% of what Open Rocket and altimeter readings show for conventional rockets.

 

[rcktnut]

I simmed it for you, with your total weight given in your post 24.3 oz. w/o motor and added 1 oz. nose weight. Simmed a few times getting around 815 ft. with extra oz. and 850ft. without extra oz. If delay is your concern, no problems with the 7 sec. delay.

 

[rsbhunter]

I simmed it for you, with your total weight given in your post 24.3 oz. w/o motor and added 1 oz. nose weight. Simmed a few times getting around 815 ft. with extra oz. and 850ft. without extra oz. If delay is your concern, no problems with the 7 sec. delay.

Thank you rcknut. As I said, I'm trying to understand rocsim, but the options still lose me.. I appreciate the time you took to sim it ....rsbhunter