THE CAR

AUSSIE INVADER 5R

OVERVIEW

The work in building Aussie Invader 5R has now come to the completion of phase 1 (a rolling car and systems in place), with phase 2 underway (rocket motor design and propellant assessment). It has taken about 15 years to get to this stage, from concept to a car that looks ready to race. The science and technology behind such a project is staggering, and virtually everything we design and build, has never been done before in this context. Rosco says “Only now is some of this technology and science coming into the reach of people like us, a dedicated and committed small team, driven with a passion to achieve the seemingly impossible”.

Rosco McGlashan OAM leads the team, and is also the driver of Aussie Invader 5R. Rosco has 45 years of experience of racing and working within the Land Speed Record environment, chasing records and becoming the Fastest Aussie on the planet, having driven Aussie Invader III to a one way pass of 638 mph (1,028 km/h) in 1996.

AI5R-front-on-400

Our wheel rating at maximum velocity is a major concern; we do not want to exceed their safety margins and must limit the wheel speed to 10,000 rpm +/- 5%. At these speeds there is a massive force exerted on the wheel rim (50,000 G) and the wheels have been designed to withstand these forces.

The car should exit the mile in well under four seconds and then the fun begins. The driver will have to shut the down the motor in stages, otherwise the car and driver will experience a negative G of such high proportions, that the driver would black out and it would send the wheels into a frenzy searching for traction. For safety, the motor will be reduced to half throttle to maintain driver control and traction and then reduced further as the car slows, allowing air brakes, parachutes and more conventional braking systems to assist the stopping process.

Throttling down our motor in stages adds extra distance to bring this “missile” to a standstill. It then has to be turned around, towed back to the staging point for the mandatory return run. We then need to re-fuel, re-oxidise, recharge our nitrogen tanks, pack chutes and do a total check over before doing it all again within one hour. The combined average speed in both directions hopefully establishes a new World Land Speed Record… simple really!

ANATOMY OF A 1000 MPH CAR

A quick overview of Aussie Invader 5R and some of its major components.