Drone Sets World Speed Record at 453 mph with Custom Sawtooth Propellers

At a glance:

• Drone achieves 453 mph (730 kph) using custom sawtooth carbon fiber propellers
• Record surpasses previous 441-mph mark set by Bell father-and-son team
• Test involved high-pitch blades and wind-assisted downwind flight

The Record-Breaking Achievement

Aidan and Ben, a drone-loving duo, officially broke the world speed record for drones when their 'Blackbird' reached 453 mph (730 kph or 394 kts) during a test run. This surpasses the previous record of 441 mph (700 kph or 377 kts) held by the Bell father-and-son team with their Peregreen V4. The duo had previously set a 388 mph (626 kph or 338 kts) record in December 2025 but were soon overtaken. Their goal was to reclaim their crown, prompting the development of custom propeller technology.

The test wasn’t without challenges. During the downwind flight, the drone exceeded expectations but lost connection due to antenna geometry and signal overload at high speeds. The team avoided recovery attempts, knowing the drone would crash miles away. They later conducted a second test run the next day, averaging speeds from downwind and upwind flights to account for a 34-mph tailwind. The final average of 425 mph (685 kph or 369 kts) still beat the existing record, though they aimed for over 434 mph.

Engineering the Sawtooth Propellers

The key to the record lies in the custom carbon fiber propellers. These featured high-pitch blades angled more toward the flight direction, optimizing airflow efficiency at high speeds. The sawtooth leading edges on the blades generated vortices that stabilized the boundary layer, reducing drag and preventing stalling. While this design excelled at high speeds, it sacrificed low-speed performance, requiring more battery power during takeoff and hovering.

The sawtooth design also addressed a critical aerodynamic issue. By creating vortices, the blades prevented air from sliding sideways, ensuring a more direct thrust vector. This allowed the propellers to operate at steeper angles without losing efficiency—a crucial factor in achieving the record speed. The team’s focus on blade geometry over traditional designs marked a significant departure from prior attempts.

Challenges During Testing

The duo faced multiple obstacles during their record attempt. Adverse weather conditions, including strong winds, forced them to conduct both downwind and upwind flights. They averaged the results to mitigate wind interference. Additionally, battery limitations restricted them to just two test runs, adding pressure to complete the task before weather worsened.

Signal loss at high speeds was another critical challenge. At 453 mph, the drone’s antenna geometry and the Doppler effect caused a complete loss of controller connection. The team accepted this risk, prioritizing speed over recovery. They also had to act quickly due to the approaching weather, which limited their testing window.

Damage and Future Attempts

Despite the success, the drone sustained damage during landing, with batteries draining completely just feet off the ground. The team plans to repair the drone for an official record attempt. Meanwhile, the first drone that crashed was found mangled on the testing site, as expected. The team remains optimistic about their next attempt, leveraging lessons from the failed test.

Implications for Drone Technology

This record highlights advancements in drone aerodynamics and materials science. The sawtooth propeller design could influence future high-speed drones, particularly in applications requiring rapid response or long-range travel. However, the trade-off between high-speed efficiency and low-speed performance remains a challenge. The success also underscores the importance of iterative testing and risk management in pushing technological boundaries.

The duo’s achievement may inspire DIY enthusiasts. Tom’s Hardware notes that while the propellers were custom-made, the drone’s body and other components could be 3D printed at home. This democratizes access to high-performance drone technology, though safety and regulatory considerations will be critical for amateur attempts.

The Role of Community and Collaboration

Aidan and Ben’s project reflects the growing community around drone innovation. Their collaboration with Drone Pro Hub, which shared the test run on YouTube, highlights how platforms can amplify grassroots tech achievements. The project also draws attention to the need for standardized testing protocols to validate records, ensuring credibility in an era of rapid technological experimentation.