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Project DRI

Project Members

Subteam Lead & PM

Interdependencies & Stakeholders

@Name

Form-factor: @Name

Mtl’s/Mfr/Assem: @Name

Testing/Validation: @Name

Aspect: @Name

Lead: @Name Adrian Au

PM: @Name Kristen Emiko Shiozaki (Deactivated)

Mechanical:

Aerobody: @Name

Hardware:

Light Boards: @Name

Firmware:

Lights Driver: @Name

Aero-chassis: Shi Jing Yang (Deactivated)

Seat-belt chassis mounting: Filip Tomic

Problem Breakdown

Background

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Headlights are one of the requirements listed by the American Solar Challenge (however not required for the World Solar Challenge). For MS XIV, the headlight unit will contain two types of lights: Daytime Running Lights (DRL’s) and Front Turn IndicatorsMS XIV is designed to accommodate 4 occupants and consequently will require 4 seats. Seat construction typically involves several components including a structural frame, padding, and additional upholstery. The seats for MS XIV are intended to be rigidly fixed to the vehicle chassis for the sake of simplicity and safety.

The range of occupant sizes and seating positions was previously determined in past terms. The aggressive seating angle (very low and laid back angle) and limited occupant size for rear occupants was chosen in order to meet the aerodynamic form-factor of the vehicle.

Several key considerations that should be made are: designing for minimal seat weight, designing for maximum cooling/ventilation of occupants (since solar cars have no air-conditioning system), and designing around ballast storage compartment (to ensure fairness, all occupants are given a ballast of lead-shot to be placed near the hips to bring their weight to 80kg/176lbs).

Scope

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The scope of this project encompasses the entire design of both front and rear seats. This includes the structural aspect of the seat (typically composite), mounting of seat to chassis, padding, and fabric. An off-the-shelf 5-point safety harness will used for all occupants and will be secured to the chassis via mounting tabs. The safety harness mounting will be handled by the aero-chassis team, however there placement will most likely be a joint effort with the interiors team.

Needs Statement

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i.e A need exists for a headlight unit that meets the DRL (Daytime Running Lights) and front turn signal regulations (ASC) while maintaining good vehicle aerodynamics, minimal energy consumption, and is aesthetically pleasingfor safe, comfortable, and lightweight seats for the front and rear occupants.

Major Goals

i.e
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  1. Have 4 complete and functional headlight unitseats

  2. Meets lighting safety regulations (ASC and WSC)

  3. Mechanically and electrically reliable & robust

  4. Minimally disruptive to vehicle aerodynamics

  5. Minimal power consumptionMeets line-of-sight requirements for driver

  6. Comfortable to sit in for a variety of users

  7. Maximizes lightweight construction

  8. Maximizes practicality

  9. Aesthetically pleasing

Relevant Requirements/Regulations

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Head Restraint Regulations

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Seat Regulations

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Ballast Regulations

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Safety Belt Regulations

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Project Planning Review and Design Kick-off

Link to slides:

References

View file
nameASC2020-Regs-EXTERNAL-RELEASE-C.pdf

https://www.americansolarchallenge.org/regulations/2020-american-solar-challenge-regulations/