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markmywords
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Horizontal water rocket thrust calculations - HELP!
Hi All,
I want to accelerate a 90kg body at a rate of 2 m/s2 for a period of 1 second using thrust developed from a number of water bottle rocket jets. Based on the drag coeff calculated I believe I need to develop 190N of force.
A water bottle rocket uses a quantity of water as the working fluid which is propelled through a nozzle by a volume of pressurized air.
Where do I begin? Ideally I would like to use 3 or 4 separate rockets. How do I calculate the pressures, nozzle sizes, water volume, vessel volume/sizes required?
I have taken a look at http://www.sciencebits.com/RocketEqs but afraid my physics a bit rusty. Need some help negotiating these equations!
Many thanks
markmywords
Hi All,
I want to accelerate a 90kg body at a rate of 2 m/s2 for a period of 1 second using thrust developed from a number of water bottle rocket jets. Based on the drag coeff calculated I believe I need to develop 190N of force.
A water bottle rocket uses a quantity of water as the working fluid which is propelled through a nozzle by a volume of pressurized air.
Where do I begin? Ideally I would like to use 3 or 4 separate rockets. How do I calculate the pressures, nozzle sizes, water volume, vessel volume/sizes required?
I have taken a look at http://www.sciencebits.com/RocketEqs but afraid my physics a bit rusty. Need some help negotiating these equations!
Many thanks
markmywords