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Springtail EFV-4B Preliminary Specifications and
Performance
Overview
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.
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Springtail Exoskeleton Flying Vehicle
(EFV-4B)
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Engine: |
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Type |
One
118 hp Rotary Engine |
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Specifications: |
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Height |
8.3
feet (2.5 meters) |
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Width (duct assembly) |
9.7
feet (3.0 meters) |
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Width (landing gear) |
3.5
feet (1.1 meters) |
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Depth (front to rear) |
5.3 feet
(1.6 meters) |
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Empty Weight |
375 pounds
(170 kilograms) |
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Normal Loaded Weight |
622 pounds
(282 kilograms) |
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Maximum Takeoff Weight |
834 pounds
(378 kilograms) |
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Maximum Payload (with full fuel) |
358
pounds (162 kilograms) |
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Fuel
Capacity |
12.3 gallons
(46.6 liters) |
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Performance: |
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Maximum Speed |
113 mph
(182
km/h) |
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Cruising Speed |
94 mph
(151 km/h) |
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Loiter Speed |
64 mph
(103 km/h) |
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Hover Ceiling |
11,400 feet (3,475 meters) |
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Range |
184 miles
(296 kilometers) |
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Endurance |
2.2+
hours |
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Rate
of Climb |
5,500 feet/minute (1,524 meters/minute) |
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