Before I get into this, let me say what a great forum this is. Good to see so many other people with a similar interest sharing useful information.
I have a question regarding large, solid fuel motors.
I have a design for a large rocket, specifics being 4m high, 110mm OD body with an esitmated weight of 100KG, excluding the motor. The whole design is based around the principle of using a single use solid fuel motor to power the rocket, with an OD of the motor casing not exceeding 100mm. The motor can be up to 3m in length, but there is considerable room for design tweaking if it needs to be longer, however there is no room for extended width.
The motor needs to be long burning, 30 seconds minimum, which produces in excess of 500Kg thrust for the entire duration of the burn time.
Has anyone built a motor, from scratch, this large before?
Can it be done?
I estimate that heavy guage spiral wound cardboard tubing could be used for the motor casing - I have obtained samples of 15mm wall 100mm OD tubing which is very robust, and a 65/35 mix of KN/Sorbitol could be used for the fuel, due to it's uniform flat thrust curve characteristics.
Any information appreciated.
Thanks,
Dutch
I have a question regarding large, solid fuel motors.
I have a design for a large rocket, specifics being 4m high, 110mm OD body with an esitmated weight of 100KG, excluding the motor. The whole design is based around the principle of using a single use solid fuel motor to power the rocket, with an OD of the motor casing not exceeding 100mm. The motor can be up to 3m in length, but there is considerable room for design tweaking if it needs to be longer, however there is no room for extended width.
The motor needs to be long burning, 30 seconds minimum, which produces in excess of 500Kg thrust for the entire duration of the burn time.
Has anyone built a motor, from scratch, this large before?
Can it be done?
I estimate that heavy guage spiral wound cardboard tubing could be used for the motor casing - I have obtained samples of 15mm wall 100mm OD tubing which is very robust, and a 65/35 mix of KN/Sorbitol could be used for the fuel, due to it's uniform flat thrust curve characteristics.
Any information appreciated.
Thanks,
Dutch