SINGAPORE - A Singapore firm has unveiled a one-seater flying vehicle that it hopes could be used for door-to-door transportation in urban areas when it is launched in the United States.

The personal aerial vehicle, named Crimson S8, is earmarked to launch in California from late next year, Neo Aeronautics said on Thursday (April 25). It will not be launched in Singapore due to regulations.

The vehicle is currently undergoing indoor trials without an operator on board in Loyang. Neo Aeronautics is looking to fine-tune the model and conduct outdoor trials soon. It may approach the Civil Aviation Authority of Singapore (CAAS) to explore if it is possible to do so here.

The firm is aiming to start flight tests in the US by March next year.

Founder and chief executive Neo Kok Beng said the vehicle is designed for low-level urban aerial mobility and facilitates door-to-door urban transportation.

It can fit into a standard American carpark lot measuring around 15 sq m and can fly at a height of 15m with a payload of 100kg.

It will have a maximum speed of 100kmh. The current development model can stay airborne for about 20 minutes, but the company plans to improve the limit up to at least 60 minutes.

The vehicle has the capability to fly on autopilot, or be manually controlled by the pilot.

Associate Professor (Adjunct) Neo, who teaches innovation and technology commercialisation at the National University of Singapore, said the Crimson S8 is designed to fit into the ultralight category set by the US Federal Aviation Administration. This means that any potential operator will not require a pilot licence to fly the vehicle.

"Flying the Crimson S8 fulfils our aspiration that everyone can fly as it is as simple as operating a drone," he said.

Prof Neo said the company plans to launch the vehicle in 25 cities in the US by 2025, with 1,000 units in each city.

He started the company in August last year and built the Crimson S8 with three other engineers. He has invested more than $200,000 of his own money into the project.

In the long term, he plans to offer the Crimson S8 on a membership-based scheme.

"If we sell unit by unit, not many people can afford it. We are going for the masses so we go by membership services, and we will take care of maintenance and upgrading," said Prof Neo.

Members will need to go through a two-hour training session before they can fly the vehicle.

Prof Neo hopes that regulations will evolve over time to allow the Crimson S8 to launch in Singapore and in other cities, and he will explore opportunities to work with the authorities.

"We are now focused on human flight, but we can adapt the vehicle for logistics flights," he said, adding that it is possible for the vehicle to be a "heavy lifter from sea to shore".

Mr Tan Kah Han, Senior Director (Safety Regulation Group) and Director (Airworthiness Certification & Unmanned Aircraft Systems) at the CAAS, which oversees all commercial flying activities in Singapore, said the agency adopts a proactive, collaborative, risk-based, and customised approach to address technological and regulatory challenges.

"Unlike many countries where UAS (unmanned aircraft system) operations are generally confined to the rural and less populated areas, the Singapore context means that regulators and operators must from the onset deal with the challenges of operating within a complex and dense urban landscape," he said.

"Neo Aeronautics has not approached CAAS to operate in Singapore. To facilitate trials, CAAS needs to ensure that the risks associated with such trials are adequately mitigated so that public and aviation safety are not compromised."

He added: "That is why we require prototypes to undergo stringent safety evaluations and satisfy strict technical requirements before they can be allowed to fly. CAAS has also designated 'Regulatory Sandboxes' and 'Drone-Estates' to facilitate the conduct of proof-concept trials for innovative drone use-cases within a controlled environment."

Development of flying vehicles that could be used for personal air transport with autonomous navigation has been picking up speed worldwide.

One example is German aviation start-up Volocopter, which is aiming to perform a series of urban flight tests of its air taxis in Singapore in the third quarter of this year.

The firm's air taxi resembles a helicopter, but is based on drone technology and can fly two people for about 30km. It is designed specifically for inner city missions and can carry 160kg.

Meanwhile, aviation giant Boeing said in January that its prototype "flying car" had completed its first successful test flight.

The test for the electric vertical take-off and landing (eVTOL) aircraft was carried out outside Washington. It was designed for fully autonomous flight from take-off to landing, with a range of up to 80km.