Set the pressure the cooling system operates at, and provide the fill and bleed point.
A pressure cap on the swirl pot. Raising system pressure raises the boiling point of the coolant, which is what gives the margin between the 115 C maximum water temperature and the 126 C boiling point at system pressure.
No part-specific design process is documented. The Cooling, Powertrain subsystem design process applies: 1. Define measured heat rejection from previous-year endurance data. 2. Iterate core parameters in the MATLAB NTU-epsilon analysis until the target is beaten with margin, at the stated assumptions: steady state, single-phase water, constant air mass flow from CFD at 32 mph average endurance speed, 105 C water inlet, 27 C air inlet, constant fluid properties. 3. Give the core geometry to Aerodynamics for duct, shroud and radiator angle design; take back the achieved mass airflow. 4. Lay out the water loop: pump at the lowest point, swirl pot cap at the highest, bleed valve on the top tank, temperature bungs at inlet and outlet. 5. Validate on a mock endurance with inlet and outlet thermistors and back-calculate heat rejection.
Laid up on a 3D printed mold, printed directly, or formed from sheet.
Purchased pressure cap.
None recorded. This part has no entry in Knowledge_Transfer/Issue Logging/Fault Vault.xlsx, in either Issue Log.xlsx, in CR22/Issue Tracking/Shakedown 7-15-23.xlsx, or in any design review issue list found in CrimsonStorage or Box.
Nothing in CrimsonStorage covers these yet.