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Concept Cars 5 Oct 2018
Time Attack Concept Racer shows GM Holden design potential

The Time Attack Concept Racer is an extreme virtual racer developed in-house at GM Holden’s Melbourne Design Studio using sophisticated simulation technology.


The concept, which also celebrates? the 50th anniversary of Holden’s first win at Bathurst in 1968, was developed entirely by GM Holden’s Design Team to showcase the studio’s capabilities and explores the a technological potential for extreme future races.

Holden Time Attack Concept Racer

“Unlike the conventional format of the current endurance race cars, the Holden Time Attack Concept racer is envisioned as a single-lap tearaway, pitted against the clock. This type of racing is commonly known as Time Attack in motorsport circles.”

Holden Time Attack Concept Racer

The Holden Time Attack Concept racer was developed entirely virtually, using sophisticated simulation technology.

Holden Time Attack Concept Racer

Equipped with a 1000 kW electric drivetrain with 4 in-wheel motors, and featuring a structure made in carbon fiber composite with a cellulose Honeycomb Core, the car features stunning estimated performances, with a top speed of 480 km/h and a 0-100 km/h sprint in less than 1.3 seconds – you can check the complete specifications in the press release reported at the bottom.

Holden Time Attack Concept Racer

Holden Time Attack Concept Racer Chassis Structure

Above: the complex?carbon fiber / composite chassis and crash structure

GM Holden’s Design Director, Richard Ferlazzo explains: “The technology we employ today has transformed the way we design cars. We have the ability to simulate a car’s appearance, technology and dynamics in convincing animations, which enables us to deliver better designs in a shorter time. A large part of our work is Advanced Design and we use this technology to develop concept designs for our parent company, General Motors. This concept is a digital advertisement for the advanced skills, capability and technology of the GM Holden team”.

Holden Time Attack Concept Racer Exploded View

Holden has a long and storied history of creating crowd-pleasing concept vehicles dating back to the iconic Holden Hurricane concept of 1969, with traditional motor shows the typical platform for debuting them to Australia. As times have changed, so has Holden’s approach to developing concept vehicles.

Holden Time Attack Concept Racer Suspensions

Above:?The Time Attack Concept Racer uses carbon fiber double wishbone suspension with carbon/carbon hydraulic disc brake

“The cessation of Motor Shows in Australia left a hole in our automotive culture in some ways and we lost a forum to showcase our passion and creativity to the Australian public with physical concept cars. However, with the realism and detail achievable through modern technology, I felt we could still deliver uniquely Holden concepts via virtual technology and digital media,” said Ferlazzo.

Holden Time Attack Concept Racer Interior Cockpit

Ferlazzo set a challenge for his talented design team to explore a futuristic race car using the latest emerging technologies around the world and was impressed with the proposal from Lead Designer, Ewan Kingsbury.

Holden Time Attack Concept Racer Virtual reality Design Review

Above: GM Holden Design Director Richard Ferlazzo (L) with Lead Designer Ewan Kingbury (R)

“Ewan perfectly captured the essence of what we wanted to achieve; an expressive, futuristic design which also displays innovative engineering solutions. Concepts are always meant to push the boundaries but are even more impactful when they are feasible and this concept is plausible as an advanced racer of the future,” said Ferlazzo.

Holden Time Attack Concept Racer Virtual reality Design Review

Above Richard Ferlazzo and Ewan Kingsbury using GM Virtual Reality and Design Visualization technology to finetune the design of the Holden Time Attack Concept Racer

The concept was developed with technical input from GM Holden’s Engineering team and the final design was validated with a digitally-printed 3D model.

The finishing touch was a photorealistic video, created by GM Holden’s in-house Design Visualisation team, and showing the Time Attack Concept racer lapping the iconic Mount Panorama circuit.

“Automotive Design and Engineering remains a core strength and competitive advantage for Holden and for Australia. The Time Attack Concept racer is an illustration of how we can utilise cutting-edge technology to develop transportation solutions for the future. You can see from the extremely detailed approach to incorporating the advanced technology in our Time Attack Concept racer that this is more than just a visual exercise. Holden’s recent announcement of the expansion of 150 new engineers to our Advanced Vehicle Development team means we have the talent, resources and technology to continue delivering to that charter,” concluded Ferlazzo.

(Source: Holden)

Technical Specifications

Performance:

  • Simulated Mount Panorama Lap Time: 1:29.30
  • 0-100km/h: 1.25 sec
  • Top Speed: 480km/h
  • Maximum Lateral G-Force: 6.5G
  • Maximum Braking G-Force: 6G

Powertrain:

Motors:

  • 250kW Axial Flux Permanent Magnet Electric Motor Drives x 4 (Inboard mounted)
  • Total output – 1000kW (1Megawatt) / 1340HP
  • 3240Nm Total Motor Torque
  • 5000RPM Maximum Revolutions
  • Enables full programmable Torque Vectoring Traction Control at each corner

Gearboxes:

  • 3-Speed Planetary Automatic Shift Gearboxes x 4
  • Ratios 1st?2.97:1, 2nd?1.7:1, 3rd?1:1
  • First gear ratio enables 9620Nm total axle torque at launch
  • Gearbox casing integrated into Chassis structure

?

Power Source:

Reconfigurable Graphene Hybrid Power Pack

1MW power output, 90MJ Usable Charge Capacity

Fast Recharge: Fully recharged in 90 seconds (1000kW, 800V, 1250A)

Motor Cooling:

Longitudinal Heat Exchangers x 2

Liquid-to-Gas Phase Change Cooling, low drag, full pass-through

Brakes:

Carbon/Carbon Hydraulic Discs x 4

Electrical Heating of pad and rotor in pits and on out-lap to conserve energy

Full Regenerative capability on all axles, can provide up to 2.0G braking force

Structure:

Chassis:

Carbon Fibre composite with cellulose Honeycomb Core

Full Integrated safety cell and crash structure, utilising stressed powertrain components

Suspension:

Carbon Fibre Double Wishbone all-round, aerodynamically engineered profiles

Titanium CNC’d Uprights with bushed underbody mounts

Pushrod / bellcrank activated Hydraulic Active Suspension Actuators. Computer controlled programmable ride height adjustment, anti-dive, anti-squat, anti-roll

Electric Power Steering

Body:

Carbon-Fibre/Kevlar Composite panels with Polycarbonate Graphene Coated Upper

Underbody:

Full Carbon Fibre / Kevlar Composite quad-venturi underbody, with flexible co-moulded membranes at Body and Chassis junctions

Underbody is structurally mounted to Suspension uprights at all 4 corners, enabling full aero load to be applied directly to each wheel

Torsional twist capability enables underbody to maintain consistent relationship to ground even with extreme road camber change

Wheels:

310/700 R18 Slick tires all round

Carbon Fibre Composite Rims

Active Wheel Fairings support low drag or brake cooling positions

Wheel Fairing supported by a Kevlar/Elastane woven skin enabling consistent low drag performance whilst supporting full wheel steering and suspension movement

?

Aerodynamics:

Low Frontal Area with all powertrain components on centre-line in Driver’s frontal area ‘shadow’

Full Active Downforce Generation via Ground Effects technology

Ultra-high Downforce levels achieved via electrically powered Cyclo-gyro fans

Rubber Skirts control air-bleed and enhance Ground Effect

4 Individually controllable Fans accelerate airflow through 4 venturi tunnels to enhance downforce at lower speeds

Fans enable programmable and constantly tuneable centre-of-pressure

Cyclo-gyro fans with actuated blades enabling variable thrust direction and force

Fans powered by 4 Switch Reluctance Motors (SRM), each up to 50kW, 50,000rpm, 92% efficient

Hydraulically actuated variable-position rear wing with air-braking capability

Lift-drag Ratio of underbody aero components in excess of 90:1

Miscellaneous:

Front Lighting:

Active Matrix Laser Units with yellow ‘Endurance’ Tint

Rear Lighting:

LED Matrix display – programmable pixels

Driver Assistance:

Augmented Reality Helmet: 3D graphics projected onto helmet visor to enable graphics overlay in real-time. Essential technical information provided in addition to racing line and braking zone benchmarks.

Integrated full steering wheel inputs to control all mechanical and aerodynamic systems via presets.

Six Point safety harness.

Telemetry and Camera mast to enable constant uplink and data transmission and in-car filming

Image Gallery

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Time Attack Concept Racer shows GM Holden design potential - Image 1
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Time Attack Concept Racer shows GM Holden design potential - Image 11
Time Attack Concept Racer shows GM Holden design potential - Image 6
Time Attack Concept Racer shows GM Holden design potential - Image 2

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