Bloodhound, the land speed record car bidding to set a new supersonic land speed record of around 800mph in South Africa next year, will leave the UK in the next two weeks for a series of shakedown runs.
The long promised high-speed testing will take place on a specially prepared 12.4 mile track at Hakskeen Pan in the Kalahari Desert, near the Namibian border.
To test the installation of its Rolls-Royce EJ200 Eurofighter gas turbine engine, the car was this week successfully given a “dry crank” at its Gloucestershire HQ which involved having the exhaust output of a smaller jet engine blown into its intake to rotate the moving parts of the main motor. “It involves turning the engine without activating the ignition,” says engineering director Mark Chapman. “It’s like a last look under the hood”
Once in South Africa, the Bloodhound team plan a series of 13 runs to test high-speed aerodynamics and stability, especially a 400mph-plus transition phase when steering authority delivered by the front wheels’ grip on the track surface changes, and the front wheels become rudder-like aero devices.
Engineering Director Mark Chapman expects the car to exceed 500mph in these initial tests, though he says high speed is not the biggest issue this time. “The 200mph testing we did at Newquay Airport in October 2017 was all about accelerating the car, about checking that we could generate thrust from standstill. The car was only at full power for about two seconds.”
“In South Africa this time our EJ200 engine will develop its full 54,000 horsepower for nearly a minute, but the main emphasis will be on stopping — the biggest engineering challenge of all is stopping a car as fast as this without running out of desert.
“We’ll be testing a two-parachute braking system, and of course we have friction brakes that work best below about 200mph. On top of that we’ll do handling tests and investigate stability changes. And, of course, we have to see how well the team can perform under pressure in heat that might hit 104 degrees fahrenheit.
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