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exactly we are using mechanical deployment and ejection

thank you so much

Thenk you for your reply Tony actually we are a team for a competition and we calculate the size of parachute with a formule and it must be 180 cm and competititon rule say you cant use under 180 cm and it must be bring down 9 m/s . so if their packing volume is same ı should use the cheap one...

thank you for your answer and advices i will send pm now.

hello everyone we will buy a parachute but we are undecided between two parachutes. first one is this parachute https://www.apogeerockets.com/Building_Supplies/Parachutes_Recovery_Equipment/Parachutes/High_Power/72in_Iris_Ultra_Parachute second one is this...

sorry. we didnt have much time to search site.

oh sorry ı didnt know it was illegal. yes its for competition. actually competition will give motors to us but we want try before the competitions and there is a lot of examples about making motors and its look like easy so we want to make it. thenk u for notice

hello guys we are a rocket team from turkey and we want make a rocket motor and we dont know any thing about motors can you help us? it be like cesaroni l585 high power motor. what is the chemicals? is there any tutorial or like that? thenk you :)