The $190K ‘Flying Car’ That Doesn’t Require a Pilot’s License | WSJ Tech Behind

Key Concepts

• eVTOL (electric Vertical Takeoff and Landing): Aircraft that use electric power for vertical takeoff and landing.
• Ultralight Aircraft: A category of aircraft with strict weight limitations, generally not requiring a pilot's license.
• FAA (Federal Aviation Administration): The U.S. agency responsible for regulating aviation.
• Control Surfaces: Parts of an aircraft that allow a pilot to control its flight (e.g., elevons, propellers).
• Elevons: Control surfaces that combine the functions of elevators and ailerons, used for pitch, roll, and altitude control.
• Autonomous Flight: Aircraft operation controlled by software rather than a human pilot.
• Type Certification: The process by which the FAA approves an aircraft design for commercial use.
• Contested Logistics: Military operations involving the transport of goods in potentially hostile environments.

Pivotal's eVTOL: Design and Regulatory Strategy

Pivotal's electric Vertical Takeoff and Landing (eVTOL) aircraft distinguishes itself through its compact, single-seat design, weighing less than some motorcycles. This design choice is deliberate, aiming for the "ultralight" aircraft classification.

Advantages of the Ultralight Path

• Reduced Regulation: The ultralight category is less regulated, allowing for faster iteration cycles of design, testing, and building. This accelerates development and innovation.
• Simplified Design: The company emphasizes fewer moving parts compared to most eVTOL constructions, which reduces cost, weight, and potential failure points. Pivotal's aircraft has 12 control surfaces: eight propellers and four elevons for pitch, roll, and altitude control.

Trade-offs of the Ultralight Classification

• Limited Power and Range: The ultralight classification imposes significant weight restrictions, which in turn limits the aircraft's power, range, and potential commercial applications.
• Weight Restrictions: To qualify as an ultralight, the aircraft (excluding certain safety devices) must weigh under 254 pounds. Pivotal's aircraft, with a parachute and flotation devices, reaches 348 pounds. This necessitates compromises, such as omitting non-essential equipment like radios, beacon lights, or navigational lights.
• Flight Time and Range Limitations: The current battery capacity supports only about a 20-mile or 20-minute flight, significantly limiting its mission capabilities.

eVTOL Technology and Design Features

Vertical Takeoff and Landing Mechanism

Unlike traditional planes that require long runways for lift generated by wings, eVTOLs utilize propellers for vertical lift.

• Propeller Redundancy: Pivotal's eVTOL features eight propellers, providing redundancy. The loss of a single propeller would not prevent the aircraft from flying, a significant safety advantage over helicopters, where the loss of the main rotor would be catastrophic.

Electric Propulsion and Maintenance

• Electric Power: The aircraft is powered by eight large batteries, eliminating the maintenance complexities associated with gasoline, diesel, or jet engines.
• Fewer Moving Parts: The design philosophy prioritizes minimizing moving parts, contributing to reliability and reduced cost.

Innovative Flight Control: Tilting Aircraft

A key design innovation is the tilting mechanism.

• Integrated Lift and Cruise: Instead of separate propellers for vertical lift and cruise flight, or tilting wings, Pivotal's aircraft tilts the entire airframe. This allows the same propellers to provide both vertical takeoff/landing thrust and forward cruise propulsion.
• Pilot Transition: During takeoff, the aircraft tilts backward, transitioning the pilot from an upright to a reclined position. In cruise mode, the aircraft tilts forward for horizontal flight at speeds up to 63 miles per hour.

Pilot Training and Autonomous Control

Simplified Pilot Requirements

• No Pilot's License Required: Due to its FAA ultralight classification, a traditional pilot's license is not necessary.
• Company-Provided Training: Prospective pilots undergo a two-week training program provided by Pivotal, including simulator time.
• Testimonial: Dan Neil, auto columnist for The Wall Street Journal, described his training experience, noting initial motion sickness but ultimately gaining confidence and enjoyment.

Software-Driven Flight

• Autonomous Takeoff and Landing: Takeoff and landing procedures are largely autonomous, managed by the company's software.
• Pilot Control: Once airborne, the pilot controls speed, direction, and altitude using joysticks.
  • Thumb Stick: Controls elevation (up/down).
  • Joystick: Controls aircraft tilt (forward/backward for pitch).

Sensor-Based Stability

Pivotal's software relies on a network of sensors for stability and navigation:

• Pitot Tubes: Measure air speed and pressure.
• Flight Controllers (Three): Process sensor data and manage aircraft operations.
• GPS Sensors: Determine the aircraft's position in space.
• Environmental Sensors: Provide data on wind speed, air pressure, and surrounding conditions.

The software uses this data to adjust propeller speed and elevon positions, maintaining a stable position even in varying wind conditions.

Market Entry, Challenges, and Future Prospects

Early Access and Sales

• Price: Pivotal's eVTOL starts at $190,000.
• Deliveries: The company has sold and delivered five aircraft in an early access program, positioning them ahead of many US competitors due to the regulatory advantages of the ultralight category.

Regulatory Hurdles and Compromises

• FAA Ultralight Classification: The primary driver for Pivotal's current market position.
• Weight Limitations: The strict weight limit necessitates significant compromises in safety features and operational capabilities.
• Uncontrolled Airspace and Congested Areas: Ultralight aircraft are permitted to fly in uncontrolled airspace but are banned from flying over congested areas, severely limiting their practical use in urban environments.

Future Certification and Expansion

• Larger eVTOL Certification: Pivotal anticipates a path to FAA certification for a larger eVTOL within the next one to two years.
• Military Applications: The company is exploring military uses, which would likely require hybrid powertrains to increase range and significant design modifications.
• Contested Logistics Vision: Pivotal's long-term goal for military applications involves a fleet of aircraft capable of carrying 2,000 pounds or more over 300 miles, with options for internal or slung cargo.

Market Reception and Scalability

• Skepticism from Aviators: Recreational pilots express concerns about the limited range, questioning its utility for travel.
• Scalable Platform: Pivotal aims to perfect a platform with inherent scalability. Future implementations, likely using similar flight computers, sensors, and motor architectures, could lead to larger, type-certified aircraft.

Conclusion

Pivotal's eVTOL represents an innovative approach to personal aviation, leveraging the regulatory advantages of the ultralight category to accelerate development. While its current design offers unique benefits like simplified operation and reduced maintenance, it faces significant limitations in range and commercial applicability due to strict weight restrictions. The company's strategy hinges on its ability to scale this platform and achieve FAA certification for larger, more capable aircraft in the future, with a long-term vision for military logistics.