The Hoversurf Formula is an eVTOL that uses fold-out wings to facilitate forward flight, and sixteen vertically mounted ducted fans which swivel to provide either vertical or forward propulsion. The claimed entry level price is $97,000. The company's website names the Formula as a "lift and cruise type design", claiming that this type of aircraft is much more efficient than multi-rotor and much safer than tilt-wing.
Stage of Development
Aircraft Type: Winged VTOL
Powerplant: Free-piston engine (FPE) Venturi engine
Range: 186 miles / 300 km
Top Speed: 155 mph / 250 km/h
Propeller Configuration: Two rows of four fans (16 total) on either side forward and aft of the passenger compartment provide lift. Two larger pusher fans behind the passengers are for forward thrust in cruise mode.
Passenger/Payload Capacity: 4 passengers (plus one partial pilot)
Autonomy Level: Piloted with Autonomous Capability
In addition to the prototype, models of Formula TWO and FOUR are in development, which will transport 2 or 4 passengers respectively.
From the Hoversurf website:
FORMULA is neither a copter nor an airplane. It combines the best aspects from both of them.
Unlike other S/VTOL, these systems work independently of each other. In most S/VTOL’s, the propellers rotate to move from vertical takeoff to airplane mode - this is their main problem. This has caused 90% of the accidents of the famous V-22 Osprey. Our engineers have solved this problem. If the wings break off, FORMULA can still safely land. If 50% of the turbines malfunction, FORMULA can still safely land.
Our Take on the Formula
The Hoversurf Formula has the elements of a successful eVTOL design, but not much news has been made about its progress since 2018 when it flew the first unmanned scale prototype. However, Hoversurf has had great success with its Hoverbike, which is now on sale in several countries. Ideally, progress with the Hoverbike will continue to generate momentum to carry into design and production of the Formula.