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We intend on performing multiple water flow tests across different injector dP's to properly characterize Cd. This should be easy for the fuel manifold of the injector; for the nitrous pintle, however, we need to figure out how to fit a pressure transducer to the nitrous. Nitrous is also problematic because of its two phase flow, but we should be able to calculate its Cd based on the homogenous + spi equations we found for it in our literature review
For our nitrous Cd tests, we will manufacture a simplified center body made out of aluminum (it will literally just be a cylinder with holes). This will allow us to quickly iterate on orifice count so we can rapidly converge on the massflows that we want.
Our P&ID for this test is under development. We are thinking to reuse the Polaris tank because it will allow us to have pressurized gas on one side of the tank and water on the other.
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