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Springtail EFV-4B Preliminary Specifications and Performance


Our next model for flight testing, the Springtail EFV-4B is a fourth generation single engine powered-lift (VTOL) personal air vehicle (PAV), which uses the core technology developed on earlier models.   EFV-4B has significant enhancements over the "A" model, including redesigned fans and variable pitch blades.  Upon future funding, this aircraft will be employed for flight envelope expansion and capabilities testing.

Springtail Exoskeleton Flying Vehicle (EFV-4B)

    Type One 118 hp Rotary Engine
    Height 8.3 feet (2.5 meters)
    Width (duct assembly) 9.7 feet (3.0 meters)
    Width (landing gear) 3.5 feet (1.1 meters)
    Depth (front to rear) 5.3 feet (1.6 meters)
    Empty Weight 375 pounds (170 kilograms)
    Normal Loaded Weight 622 pounds (282 kilograms)
    Maximum Takeoff Weight 834 pounds (378 kilograms)
    Maximum Payload (with full fuel) 358 pounds (162 kilograms)
    Fuel Capacity 12.3 gallons (46.6 liters)
    Maximum Speed 113 mph (182 km/h)
    Cruising Speed 94 mph (151 km/h)
    Loiter Speed 64 mph (103 km/h)
    Hover Ceiling 11,400 feet (3,475 meters)
    Range 184 miles (296 kilometers)
    Endurance 2.2+ hours
    Rate of Climb 5,500 feet/minute (1,524 meters/minute)


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