S4

Specifications:

Aircraft type

Passenger eVTOL aircraft

Piloting

1 pilot

Capacity

4 passengers

Maximum cruise speed

200 mph (322 km/h)

Range

100 miles (161 km), including energy reserves

Empty weight (approximately)

4,300 lb (1,950 kg)

Maximum payload (approximately)

1,000 lb (453 kg)

Maximum takeoff weight (approximately)

5,300 lb (2,404 kg)

Propellers

6 tilt-prop, 4 propellers tilt vertically including the entire electric motor nacelle, 2 propellers tilt vertically with a linkage mechanism

Electric motors

6 high performance dual wound electric motors

Power source

Batteries

Noise Footprint

45 dBA in cruise

Peak Power

236 kW per electric motor

Weight of Dual-Wound Motor Plus Inverter

28 kg

Peak Torque

1,237 lb•ft (pound-feet) 1,800 N•m (newton-meters)

Continuous Torque

1,027 lb•ft (1,380 N•m)

Cell-Level Specific Energy

288 W•h/kg (watt-hour per kilogram)

Flight Cycles

10,000 plus

Pack-Level Specific Energy

235 W•h/kg

Fuselage

Carbon fiber composite

Windows

Large windows for the entire cabin for spectacular views for the passengers

Wing

1 high main gull wing

Tail

1 V tail

Landing gear

Tricycle wheeled landing gear

Safety features

Distributed Electric Propulsion (DEP), provides safety through redundancy for its passengers and/or cargo. DEP means having multiple propellers (or ducted fans) and motors on the aircraft so if one or more propellers (ducted fans) or motors fail, the other working propellers (or ducted fans) and motors can safely land the aircraft. There are also redundancies of critical components in the sub-systems of the aircraft.