Hamza Oza

Pressure Vessel Design

To design and analyse a pressure vessel as a team that will be part of a two stage rocket. The rocket could only be powered by a mixture of air and water, with the aim of reaching a height of 1000ft.

Discovery

Before any design work could be undertaken, a discovery phase was required to determine the scope and fundamental requirements. It also raised key issues of consideration to factor into the design process. This included but was not limited to:

  • Suitable materials
  • The geometry of the tank
  • How the fuel will be delivered into the tank?
  • How it will be fixed to the exit nozzle?
  • Minimising the weight of the fuel container
  • How will it be isolated to prevent leaking into any on board electronics?

Design Phase

The discovery phase highlighted the tanks would be the largest component in the rocket. This emphasised the need for them to be strong, but lightweight. Designs were created with the assumption that the final product would be made from either aluminium or carbon fibre. These were turned into drawings for manufacture.

Stress Simulation

The design underwent stress simulation under required pressure conditions to determine if the material choices would fail under the applied conditions. The simulation highlighted the stress concentrations on the tank, and emulated the pattern expected.

pressure-vessel-stress

Result

Due to unforeseen circumstances, the rocket could not be manufactured in its entirety. This meant that it could not be tested to determine if it would have achieved the desired 1000ft.