I'm working on a team to build a liquid sounding rocket as a school project. We need to present our plumbing and instrumentation diagram, but we are butting heads on what program and standards we should utilize to make the PID more readable.
Is there any strategies we can use to improve readability and represent different 'flow states' that the plumbing system can provide? Are there any good examples of P&ID diagrams that we should reference for rocketry specifically? Is there an industry standard tool we can buy for relativity cheap?