Thrust2 | |
---|---|
Overview | |
Manufacturer | SSC Programme Limited |
Designer | John Ackroyd [1] |
Body and chassis | |
Class | Land Speed Record vehicle |
Powertrain | |
Engine | Rolls-Royce Avon |
Dimensions | |
Curb weight | 10.6 tonnes |
Chronology | |
Predecessor | Blue Flame |
Successor | ThrustSSC |
Thrust2 is a British-designed and -built jet-propelled car, which held the world land speed record from 4 October 1983 to 25 September 1997. [lower-alpha 1]
The Thrust2 is powered by a single Rolls-Royce Avon jet engine sourced from an English Electric Lightning, and has a configuration somewhat resembling that of the mid-1960s-era J79 turbojet-powered land speed record cars of Art Arfons, collectively known as the "Green Monster" cars.
The “Land Speed Record” (LSR), which was valid for 12 years, 11 months and 11 days at that time, was 622.407 mph (1,001.667 km/h) over one mile (with a flying start). [2] [3] The record was set on October 23, 1970, by the American Gary Gabelich with Blue Flame, a rocket car on the Bonneville Salt Flats. Richard Noble stepped up to "bring back this record for Britain". [4]
The time it took Richard Noble from the idea to the first concept to the successful record attempt was nine years. [5] In 1977, the Thrust2 project was officially presented at the Motorfair 1977 at London's Earls Court.
In 1978, the design and construction of Thrust2 began. The hired designer John Ackroyd, who initially trained in Saunders Roe and also worked on the Enfield 8000 electric car, retired to an abandoned cottage on the Isle of Wight for the design studies, [6] Construction was undertaken at Ranelagh Works in Fishbourne. [7]
Noble's plan was to build three vehicles: The first vehicle (Thrust1) was intended as a pure "test platform" for parts development and turbine tests, and was not intended for the record attempt. [8]
Then a "demonstration car" should be built with the second vehicle (Thrust2), with which the interest of potential sponsors should be aroused. As a special highlight, this car was designed as a two-seater with an additional cabin on the left-hand side of the vehicle. Noble wanted to impress passengers / sponsors with runs up to 200 miles per hour (approx. 320 km / h) and win them over to his project. [9] The last thing that was planned was the actual record-breaking vehicle (Thrust3). [10]
Thrust1 completed its first high-speed run on March 7, 1977. The first run was performed with a standing start at idle thrust and gradual acceleration and had an estimated top speed of about 180 mph (about 290 km / h). The second run was a so-called drag start, in which the thrust against the brakes is built up and then released. At approximately 140 mph, a rear wheel bearing stuck, the vehicle slewed sideways and overturned several times. Since this "triple roll" mostly took place in the air and the car landed on its side, the damage to the vehicle itself was relatively minor and Noble was also uninjured. The Rolls-Royce Derwent engine with its protruding combustion chambers had sustained the large portion of the damage. The jet pipe was torn off and at least one combustion chamber was destroyed. [11]
Thrust1 was never used again and the wreck was sold to a scrap dealer for £175. Despite this setback, Noble was not discouraged and saw this as completing the first step in his original plan. After a new calculation of the financial situation, Noble came to the decision to streamline the project. The levels Thrust2 (as a marketing tool) and Thrust3 (as an emergency vehicle) were merged, and the further development work was placed in the hands of John Ackroyd. [12]
On 4 October 1983, the car reached a top speed of 650.88 mph (1,047.49 km/h) and broke the record at 633.468 mph (1,019.468 km/h) (average speed of two runs within one hour).
KTVN TV (Reno, Nevada) reporter/photographers Michael Hagerty and Gary Martin covered the record setting attempt in the days leading up to the record. The car was unceremoniously stored under a tarpaulin in the only automotive garage at Black Rock desert when it wasn't being worked on by the team. A propane torch was used to burn the line straight down the hard cracked dirt of the desert for the driver to follow. No other cars were allowed to approach the race track except on the perpendicular lest the driver accidentally follow those car tracks as a different path through the measured mile.
In the record attempt on October 3, the following results were achieved in detail: [13] [14] [15]
Year | Date | Location | Driver | Vehicle | mph | km/h | Footnotes |
---|---|---|---|---|---|---|---|
1983 | October 4 | Black Rock Desert | Richard Noble | Thrust2 | 633.468 | 1019.468 | the recognized record, averaged from the two runs over the measured mile |
624.241 | 1004.619 | The result of the first run | |||||
642.971 | 1034.762 | The result of the second run | |||||
650.88 | 1047.490 | the fastest individual run that the vehicle has ever completed (without "back-up" within an hour) |
When the car was offered for sale at £90,000 in 1991, an extensive fundraising campaign was organised without government assistance to keep the car in Britain. The bid was successful, and today Thrust2 and its successor, ThrustSSC, are displayed at the Coventry Transport Museum in Coventry, England. [18]
In 1997, Thrust2's record was broken by Richard Noble's follow up car, ThrustSSC, with a top speed of 1,228 km/h (763 mph).[ citation needed ]
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