STRUCTURAL & AUTOMOTIVE ENGINEERING

Excalibur: Solar Vehicle

STATUS

Fastest Lap at FSGP 2024

TEAM

UC Berkeley Solar Vehicle (CalSol)

AutomotiveANSYS FEAComposites
Excalibur: Solar Vehicle

SYSTEM OVERVIEW

Excalibur is a road-legal solar vehicle designed for long-duration endurance racing. The chassis and roll cage must meet strict safety, weight, and manufacturability constraints while integrating with suspension, powertrain, and composite body panels. Designed for the American Solar Challenge—a multi-day, 1,500-2,000 mile cross-country endurance rally across North America.

MY CONTRIBUTIONS

  • 01

    Designed a preliminary roll cage for the 10th Gen vehicle using SolidWorks and ANSYS, targeting a 1.4 safety factor under required load cases

  • 02

    Performed structural simulations to evaluate tube sizing, load paths, and joint behavior

  • 03

    Designed roll cage and occupant cell attachment points, including composite panel insert concepts

  • 04

    Conducted hand calculations and simulation validation for panel strength and mounting interfaces

  • 05

    Supported material trade studies for tubing and mounts, evaluating 4130 steel vs. 5052 aluminum

RESULTS

  • Delivered a simulation-validated preliminary roll cage design meeting safety targets

  • Established attachment and load-transfer strategies for composite body integration

  • Modifications to car for race efficiency at FSGP 2024

PROJECT GALLERY

Excalibur cockpit detail showing pilot position and solar panel integration

COCKPIT VIEW

Excalibur top-down view displaying full solar panel array at event

SOLAR ARRAY

Structural frame CAD model showing chassis and roll cage design

FRAME STRUCTURE

CFD aerodynamic simulation showing flow and stress analysis

AERODYNAMIC ANALYSIS

ANSYS FEA structural analysis showing stress distribution on chassis

STRUCTURAL FEA

Team members posing with completed Excalibur vehicle

TEAM PHOTO