London-based company AltoVolo is breaking the mold of air mobility with “Sigma”. This is a hybrid eVTOL featuring a thermo-electric propulsion system designed for vertical take-off from private, compact spaces like driveways, rooftops, or yacht decks. While it may be presented as yet another “flying car,” it actually departs from that label and isn’t aimed at short urban connections. Instead, it sets out to redefine the concept of personal flight
With a width of 4.8 meters, a total weight under one ton, and a compact, aerodynamic design that resembles a supercar more than a traditional aircraft, Sigma is engineered for high performance. Underneath the sleek exterior lies the core innovation: a hybrid propulsion system combining tiltable electric jet motors with a total output of 1,600 horsepower. This setup blends instant electric power—via compact batteries optimized for take-off, landing, and part of the flight range (418 kilometers)—with the extended range provided by liquid fuel, resulting in a total maximum range of 820 kilometers.
Sigma offers a cruise speed of 355 km/h and can reach a top speed of 465 km/h. Its tilt-jet configuration enables smooth vertical take-off with a stable transition to horizontal flight, aided by thrust-vectoring strategies and a triple-redundant control system.
Tilt-Jet Revolution by Altovolo
Given that safety is paramount, Sigma is designed to stay airborne even in the event of an engine failure, and it includes a ballistic parachute that can be deployed from as low as 15 meters. Capable of carrying up to three passengers and a payload of 270 kilograms. it targets users who seek independence and speed for local and regional travel.
Noise emissions are kept relatively low, with take-off sound levels between 65 and 70 decibels at 100 meters, making it suitable for use in residential and noise-sensitive areas—where helicopters are often prohibited.
For reliability and autonomous flight development, AltoVolo leverages Embention systems—also used by Amazon Prime Air—and Ansys engineering simulations. A scaled prototype has already completed initial flight tests, and the next step is the construction of a full-scale demonstrator. The waiting list for first customers is expected to open in the second half of this year.
Titolo: Tilt-Jet Revolution by Altovolo
Translation with ChatGPT
