CR21 naming for the fuel pressure regulator.
See the Pressure Regulator entry.
No part-specific design process is documented. The Fuel subsystem design process applies: 1. Set tank volume from endurance consumption plus margin, with the HydraMat area and the tank CG as constraints. CR26: 1.4 gal cell, 1.56 gal effective system. 2. Design the sump to the acceleration cases: 1.42 g at 45 deg from vertical under acceleration against a rear wall 30 deg from vertical, and 2.51 g at 66.5 deg from vertical under braking against a vertical front wall. 3. Lay up the sump: 1 layer of Kevlar over 5 layers of stitched carbon twill on HIPS dissolvable molds, bonded with 3M DP420, sealed with Caswell epoxy gas tank sealer. 4. Design the top plate: -4 AN weld bungs instead of fittings, stud bulkhead terminals so no fuel path runs through wire, an aluminium terminal block for proper bulkhead seating. 5. Leak test the assembled system before it goes in the car.
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.
Dimensions called out on the cost report drawings. These are the figures printed on the drawing, not a labelled specification; open the drawing itself for what each one refers to. CR25 Fuel Pressure Regulator Drawing (as drawn): 42.00, 4.20, 12.00, 1.20, 6.00, 0.60, 11.55, 1.15, 2.50, 0.25 Source: Cost report drawings: CR25/Powertrain/Design/Y - Cost Report Drawings/Fuel/CR25 Fuel Pressure Regulator Drawing.pdf; CR26i/Powertrain - IC/Design/Y - Cost Report Drawings/Fuel/CR25 Fuel Pressure Regulator Drawing.pdf; CR27i/.Powertrain/Design/Y - Cost Report Drawings/Fuel/Archive/CR25 Fuel Pressure Regulator Drawing.pdf Quantity per car, as costed: 1
Nothing in CrimsonStorage covers these yet.