Crimson Racing Wiki

Rear Wing Mounting Brackets

Subteam: AerodynamicsSubsystem: Rear WingAssembly: Rear WingCars: CR26E

Purpose

Brackets in the CR26E rear wing mounting.

Function

A machined or waterjet part transferring load from one component into another, in double shear where the packaging allows it.

Design Process

No part-specific design process is documented. The Rear Wing subsystem design process applies: 1. 2D ANSYS sweeps to optimise element positions and angles of attack for each candidate element count. 2. Verify positions in 3D and increase stack angle of attack where 2D over-predicted. 3. Run integrated half-car runs with the current undertray iteration so element interaction is captured rather than assumed. 4. Full-car yaw runs to check performance when the front stack is reduced. 5. On-track validation with tufting on both surfaces and Flo-Vis oil during constant speed and skid pad.

Manufacturing Process

Milled. Mounting parts moved from waterjet to milled because the waterjet cut surface leaves stress raisers that can propagate.

Full Material List

Aluminium. From the cost report drawings and CAD: From the cost report drawings: 6061- T6 (Mounting Brackets).

Reoccuring issues

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.

Properties

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. Mounting Brackets (mm): 19.05, 26.92, 22.86, 4.45, 6061- T6 Source: Cost report drawings: CR26E/Aerodynamics/Cost Report & Drawings/Rear Wing/pdfs/Mounting Brackets.PDF Quantity per car, as costed: 2

Still to document

Nothing in CrimsonStorage covers these yet.