hey guys
well... im building a rocket that is very long and has a very small semi span
the rocket is about 2.6m (8' 6") long and only has a semi span on it's fins is only 76mm (3") and a root cord of only 110mm (4.5").
so really small fins... having the smal fins even though rocsim says the rocket is stable (barrowman equations) static margin1.2
is this rocket actually stable..
it looks like if the nosecone disturbs the airflow over the fins it could distrupt the stability and having the small fins makes the static margin move quite dramatically with small changes in fin size
do you think I'll have any problems?
well... im building a rocket that is very long and has a very small semi span
the rocket is about 2.6m (8' 6") long and only has a semi span on it's fins is only 76mm (3") and a root cord of only 110mm (4.5").
so really small fins... having the smal fins even though rocsim says the rocket is stable (barrowman equations) static margin1.2
is this rocket actually stable..
it looks like if the nosecone disturbs the airflow over the fins it could distrupt the stability and having the small fins makes the static margin move quite dramatically with small changes in fin size
do you think I'll have any problems?