What holds the world land speed record

The ThrustSSC, driven by Richard Noble and Andy Green in 1997, holds the official world land speed record at 763.035 miles per hour. It was the first vehicle to break the sound barrier on land. The car is jet-powered, not engine-powered like a street car, and it set the record in the Black Rock Desert in Nevada.

A second record exists for vehicles powered by conventional engines rather than jets. The Bluebird-Proteus CN7, driven by Richard Noble in 1983, holds that record at 633.468 miles per hour. This distinction matters because the two categories use different fuel sources and engineering approaches, so they are tracked separately by Fédération Internationale de l'Automobile (FIA), the international body that certifies land speed records.

Both records require the vehicle to complete two runs in opposite directions within one hour, with the average speed counted as the official record. This rule prevents wind or terrain from giving one direction an unfair advantage.

Key Takeaways

  • ThrustSSC holds the jet-powered land speed record at 763 mph, set in 1997 in the Black Rock Desert.
  • Bluebird-Proteus CN7 holds the conventional engine record at 633 mph, set in 1983.
  • Both records require two runs in opposite directions within one hour, with the average speed as the official mark.
  • The FIA certifies and maintains the official records, and vehicles must meet strict technical and safety standards to be recognized.

How jet-powered land speed cars work

ThrustSSC uses two Rolls-Royce Spey turbofan jet engines, the same type used in military fighter aircraft. These engines produce about 110,000 pounds of thrust combined. The car itself weighs roughly 10 tons and is built from aluminum and steel, shaped like a needle to cut through air resistance.

The driver sits in a narrow cockpit in the middle of the vehicle, between the two engines. At top speed, the car experiences extreme G-forces and vibration. The wheels are solid aluminum discs rather than tires, because rubber would melt or fail at those speeds. Parachutes deploy at the rear to slow the vehicle after the run ends, since conventional brakes cannot handle the energy involved.

Jet engines work by compressing air, mixing it with fuel, igniting it, and expelling the hot gases out the back at high speed. The reaction pushes the vehicle forward. This is fundamentally different from a piston engine, which uses explosions inside cylinders to move pistons connected to wheels. Jet engines produce continuous thrust rather than cyclical power, which is why they can push a vehicle faster than wheel-driven cars.

Engine-powered land speed records and why they differ

The Bluebird-Proteus CN7 uses a Rolls-Royce Avon gas turbine engine—still a jet engine, but a different type than ThrustSSC. However, the FIA recognizes a separate category for vehicles powered by piston engines (the kind in most cars) or electric motors. This category exists because the engineering challenges and design constraints are so different that comparing them to jet-powered vehicles would be misleading.

Within the piston engine category, the record is held by the Sonic Wind No. 1, driven by Art Arfons in 1965, at 576.553 miles per hour. This vehicle used a single Allison V-12 piston engine originally designed for aircraft. The distinction between categories reflects the fact that a jet engine can produce thrust in a way a piston engine straightforward cannot, so records are kept separate to acknowledge that difference.

Electric vehicles are beginning to challenge these records. The Venturi Buckeye Bullet 3 reached 307.666 miles per hour in 2010, and electric land speed attempts continue. As battery technology improves, electric vehicles may eventually close the gap with conventional engine records, though they remain far behind jet-powered vehicles.

Where land speed records are set

The Black Rock Desert in Nevada is the most common location for modern land speed attempts. It is a flat, dry lakebed roughly 140 miles northeast of Reno. The desert floor is hard-packed and relatively smooth, and the space is vast enough to allow vehicles to accelerate over several miles before reaching top speed, then decelerate safely. The FIA recognizes this location as ideal for record attempts.

Bonneville Salt Flats in Utah has also hosted record attempts, though it is smaller than Black Rock. The salt surface is extremely flat and provides good traction. Bonneville is used more often for speed trials and racing events than for official FIA records, though some historical records were set there.

The location matters because the vehicle must travel in a straight line for many miles at extreme speed. Any bump, curve, or obstacle can cause loss of control. The desert locations offer the combination of flatness, length, and isolation needed to attempt these records safely.

The engineering challenges of extreme speed

At 700+ miles per hour, air resistance becomes the dominant force working against the vehicle. The shape of the car must be extremely aerodynamic to minimize drag. ThrustSSC is designed to slip through air like a bullet, with a pointed nose and tapered body. Every curve and angle is calculated to reduce turbulence.

Heat is another major challenge. Friction between the wheels and the ground, air friction against the body, and the engines themselves all generate extreme heat. The vehicle must be cooled or insulated to prevent failure. Tires cannot be used because they would melt or explode. Solid wheels or special materials must be used instead.

Stability and control become harder as speed increases. A small gust of wind or a tiny bump can cause the vehicle to veer off course. The driver must make very small steering adjustments, and the vehicle's suspension and weight distribution must be precisely tuned. At these speeds, a crash is likely to be fatal, so safety systems like parachutes and roll cages are essential.

Fuel consumption is also extreme. ThrustSSC burns through its fuel supply in just a few minutes at top speed, which is why the runs are relatively short. The vehicle must carry enough fuel to accelerate, reach top speed, and complete the required distance, but not so much that the extra weight slows it down.

How records are verified and certified

The FIA maintains official records for land speed attempts. To be recognized, a vehicle must meet specific technical standards, be inspected before and after the run, and have independent observers and timing equipment present. The timing is done with radar or laser systems that measure the vehicle's speed over a measured distance, usually one kilometer.

The vehicle must complete two runs in opposite directions within one hour. This rule ensures that the record is not straightforward the result of a favorable wind or slope. The average of the two speeds becomes the official record. If the two runs differ by more than 10 percent, the attempt is not recognized.

Photographs, video, and data from onboard instruments are all reviewed as part of the certification process. The FIA publishes the official records and the details of each attempt, including the vehicle specifications, the location, the date, and the names of the driver and team.

Attempts to break the current record

Several teams have attempted to break ThrustSSC's record since 1997. The Bloodhound LSR (Land Speed Record) project began in 2008 with the goal of reaching 1,000 miles per hour. The vehicle uses a jet engine combined with a rocket engine to produce even more thrust. The project has faced funding challenges and technical delays, and as of recent years, the attempt has not yet been completed.

Other teams have pursued records in specific categories, such as electric vehicles or vehicles powered by alternative fuels. These attempts are less well-known but represent ongoing efforts to push the boundaries of what is possible with different technologies.

Breaking the current record requires not only engineering excellence but also funding, access to a suitable location, and favorable weather conditions. The combination of these factors makes record attempts rare events, which is why ThrustSSC's record has stood for over 25 years.

Frequently Asked Questions

Is ThrustSSC faster than the speed of sound?

Yes. The speed of sound at sea level is approximately 761 miles per hour. ThrustSSC exceeded this at 763 miles per hour, making it the first land vehicle to break the sound barrier. The shock waves created by the vehicle were visible and audible during the run.

Why do land speed cars need parachutes?

At extreme speeds, conventional brakes cannot dissipate enough heat to slow the vehicle safely. Parachutes create drag that slows the car without generating the intense friction that would damage the brakes or wheels. Multiple parachutes are often deployed in stages to bring the vehicle to a stop gradually.

Could a regular car break the land speed record?

No. A street car engine produces far less power than a jet engine. The fastest piston-engine land speed record is 576 miles per hour, set in 1965. Modern street cars rarely exceed 200 miles per hour, and the engineering required to reach even 400 miles per hour is far beyond standard automotive design.

How long does it take to set a land speed record?

The actual runs take only a few minutes each, but the entire process takes much longer. Teams spend years designing and building the vehicle, months preparing the location and equipment, and days conducting safety checks and practice runs before the official attempt. Weather delays can push the timeline back further.

What happens if a land speed record attempt fails?

If the vehicle breaks down, crashes, or fails to complete both runs within the required time, the attempt is not recognized and no record is set. The team must repair the vehicle and try again, which can take weeks or months. Some attempts are abandoned if the damage is too severe or funding runs out.