Alfa Romeo GTA: the engineers use lightweight materials for weight saving of 100 kg

The new Giulia GTA is inspired by its 1965 namesake, the ‘Gran Turismo Alleggerita’, developed by Autodelta and based on the Giulia Sprint GT.

Available in two versions, the Giulia GTA with four seats and the Giulia GTAm with two race seats, roll-bar and six-point harness, they will both feature the 2.9-litre V6 Bi-Turbo petrol engine producing 540hp along with a raft of weight saving solutions to remain true to the ethos of the original 1965 model.

Specific technical features and functional style

On the Giulia GTA, the Alfa Romeo engineers have worked to improve the aerodynamics and handling but above all to reduce the weight. The active aerodynamics were specifically studied to increase the downforce. These solutions contain technical know-how that comes directly from Formula 1, thanks to the synergy with Sauber Engineering and the use of the Sauber Aerokit. The same task is assigned to the side skirts, the specific rear spoiler and the active front splitter.

The titanium Akrapovič central exhaust system, integrated in the carbon fibre rear diffuser, is also new, as are the 20-inch centre lock wheels. Handling at high speeds has been improved by widening the front and rear wheel tracks by 50mm and developing a new set of springs, shock absorbers and bushings for the suspension systems.

On the GTAm, the aerodynamic front has been optimised by adding a larger front splitter and a real carbon-fibre rear wing, which ensure a perfectly balanced load at high speeds. In terms of performance, the Alfa Romeo 2.9-litre V6 Bi-Turbo engine, made entirely of aluminium and capable of unleashing no less than 510hp in the standard configuration, reaches an output of 540hp in the Giulia GTA thanks to the meticulous development and calibration work of the Alfa Romeo engineers. A new Akrapovič central exhaust system, in titanium and gives the car an unmistakable sound.

 

An excellent power-to-weight ratio

Power on its own is not enough to ensure extraordinary performance. The work done to reduce the vehicle weight has been meticulous, with the total weight reduction amounting to 100 kg. To achieve this the GTA uses lightweight materials such as carbon fibre for the drive shaft, bonnet, roof, front bumper, front wheel arches and rear wheel arch inserts and the shell of the sports seats with six-point Sabelt seat belts in the GTAm. Aluminium has been used in the engine, doors and suspension systems and various other composite materials have been used throughout.

In the GTAm, Lexan – a unique polycarbonate resin which comes straight from the world of motorsport – has been used in the side and rear window frames, further contributing to the weight reduction. The result is a weight of around 1,520kg which, combined with the increase in output to 540hp, brings the power-to-weight ratio to 2.82 kg/hp, making the Giulia GTAm capable of delivering extraordinary performance. Its acceleration from zero to 62mph, with the Launch Control system, is just 3.6 seconds. The Giulia GTAm is a two-seater configuration that is road legal, with front splitter and larger visible rear wing in carbon.

 

Source: JEC Composites – The editorial changes are made by Compositi magazine.

More information: www.alfaromeo.com


Leggi anche

ECOXY Project develops bio-based epoxy resin and fibre-reinforcements

Partito a giugno 2017 con termine previsto per novembre 2020, il progetto europeo ECOXY punta a sviluppare resine epossidiche innovative a base biologica e rinforzi in fibra per produrre nuovi compositi termoindurenti (FRTC) sostenibili e competitivi sia a livello di prestazioni che di costi, con l’obiettivo di raggiungere funzionalità avanzate. Questi nuovi compositi potranno trovare applicazione nel settore automobilistico e nell’edilizia…

Leggi tutto…

Composite camshaft module

Nonostante la ricerca continua di materiali più leggeri per l’automotive, le vetture in commercio hanno ancora gli alberi a camme, componente chiave dei propulsori, in alluminio. Un gruppo di ricerca dell’Istituto Fraunhofer per le tecnologie chimiche ICT, insieme ad alcuni partner, ha prodotto un albero a camme da polimeri termoindurenti fibrorinforzati. Questo componente leggero, al momento disponibile solo come dimostratore, aiuterà a ridurre il peso del motore e i costi di assemblaggio…

Leggi tutto…

BRYSON project

Il Progetto BRYSON che vede coinvolto un consorzio di aziende e istituti di ricerca tedesche, tra cui l’Università tecnica di Dresda, risponde alla sfida della transizione verso l’idrogeno. Si pone infatti l’obiettivo di sviluppare innovativi sistemi di stoccaggio dell’idrogeno per una integrazione ottimizzata nella struttura dei vari tipi di veicoli…

Leggi tutto…

Graphene-reinforced carbon fibre

Un gruppo di ricercatori alla Penn State University in Pennsylvania ha scoperto che l’aggiunta di una piccola percentuale di grafene nel processo produttivo della fibra di carbonio non solo rende la fibra più resistente, ma può anche aiutare ad abbattere i costi di produzione. La scoperta potrebbe avvantaggiare il settore automobilistico, garantendo materiali più sicuri e meno costosi…

Leggi tutto…

La tecnologia CFIP (Continuous Fibre Injection Process) è stata sviluppata e brevettata da Eurecat Centro Tecnológico de Catalunya e consente di rinforzare parti in plastica, metalli o ceramica prodotte con stampa 3D con fibre continue in carbonio, aumentandone la resistenza e riducendo il peso…

Leggi tutto…