AP Racing brakes the Land Speed Record attempt with BLOODHOUND SSC
Drawing on its vast experience in brake technology, AP Racing is helping put a stop to the vehicle aiming to reach 1000mph in 2016, by providing bespoke brake systems.
Breaking the Land Speed Record is a major challenge, but bringing the vehicle safely to a stop afterwards is another and the team behind BLOODHOUND SSC turned to AP Racing when figuring out how to stop the jet and rocket-powered vehicle. AP Racing’s experience with other world record attempts, and its history of innovation, proved valuable in tackling this unique challenge.
Providing the last link in the chain, AP Racing’s contribution will handle the final stage of braking BLOODHOUND SSC after the vehicle’s air brakes have been deployed.
Initially the team looked at using off-the-shelf brake components for the record attempt but, due to the huge forces at work, they quickly realised that a unique solution would be required. Drawing on the engineering behind aircraft brake systems and data from RTO (Rejected Take Off) scenarios, the team carefully mapped out the requirements with the BLOODHOUND team.
Providing different brake systems for both the initial runway testing in the UK and the high-speed runs in the South African desert, AP Racing have selected the materials best suited to each run: taking into account speed, centrifugal force and operating temperature. Cooling was one prime consideration: the vehicle cannot afford air cooling as this would increase aerodynamic drag.
“The two scenarios under which BLOODHOUND SSC will run present very different operating parameters,” explained Richard Bass, AP Racing. “The trial runs will actually require the braking system to slow the vehicle from a higher speed, but for the record attempts the brake components have to withstand far harsher conditions.”
For the trial runs in the UK, braking will be provided by two AP Racing systems, on the front and rear, both employing carbon/carbon disc brakes. These will slow the vehicle from a maximum 235mph as the car completes its assessment and shakedown runs.
However, for the high-speed runs only the front brakes will be employed, using specially constructed steel brake discs. Designed to withstand the high centrifugal forces generated, they can rotate at 10,000rpm without disintegrating and will take over once BLOODHOUND SSC’s air brakes have been deployed. These friction brakes handle the last stage of the vehicle’s deceleration, from 160mph to a complete stop.
An extra complexity was that, as part of the rules covering an LSR attempt, the vehicle has to make the two timed runs within 60 minutes. This meant that all components had to work flawlessly for the two runs, as there would be no time to affect repairs. The engineers also had to allow for an emergency situation, where the brake system could be engaged, at a higher speed, if the other braking systems malfunctioned for any reason.
As part of its work on BLOODHOUND SSC, AP Racing also produced the two front suspension uprights for the vehicle. In order to keep the frontal area of the car as small as possible, and so more aerodynamic, each front brake caliper is half built into the front upright. This unique solution allows the suspension and brake package to be as narrow as possible and help deliver the car’s narrow front track. Despite the condensed design each upright, made from solid aluminium, weighs over 21kg, and together both can withstand 30 tonnes of peak suspension load, as the car breaks its 1000mph target.
BLOODHOUND SSC – Flock London
BLOODHOUND front suspension upright – Stefan Marjoram
For more information please contact Matt Sanger at Automotive PR 020 7952 1079 or firstname.lastname@example.org.
About AP Racing
AP Racing is the leading manufacturer of performance brake and clutch systems for road and race cars. The core product range includes clutches, calipers, discs, pads, master cylinders, pedal boxes and air jacks, as well as road and competition brake systems for motorcycles.
The Coventry, UK-based company has achieved more international sporting success than any of its rivals, establishing itself as a key supplier at all levels of international motorsport formulae, including single seat racing, rallying, sportscar racing, stock car racing and touring cars.
AP Racing’s success has been underlined by the fact that every Formula One Championship since 1967 has been won using the company’s equipment. All of the organisation’s products are developed in close co-operation with leading car and motorcycle manufacturers using state-of-the-art, three-dimensional solid modelling/design and Finite Element Analysis CAD facilities, and dynamometers that simulate true racing speeds.
For further information, call 44 (0) 24 7663 9595, or visit www.apracing.com