JMB VL-3 Sprint

The VL-3 Evolution also called the Aveko VL-3 Sprint is a Czech ultralight aircraft, designed and initially produced by Aveko of Brno. The design is now produced by JMB Aircraft of Choceň. The aircraft was originally supplied by Aveko complete ready-to-fly, but is now owner-completed through a factory assistance program.^[2][3][4][5]

VL-3 Sprint
VL-3 Sprint RG
Role	Ultralight aircraft
National origin	Czech Republic
Manufacturer	Aveko JMB Aircraft
First flight	6 June 2004[1]
Status	In production
Variants	Gobosh 800XP

Design and development

The aircraft was designed to comply with the Fédération Aéronautique Internationale microlight rules. It features a cantilever low-wing a two-seats-in-side-by-side configuration enclosed cockpit, fixed or retractable tricycle landing gear and a single engine in tractor configuration.^[2][3]

The aircraft is made from composites. Its 8.44 m (27.7 ft) span wing has a small wing area of 9.77 m² (105.2 sq ft). The standard engine is the 100 hp (75 kW) Rotax 912ULS four-stroke powerplant.^[2][3]

A fixed gear version with a larger wing span and area as well as a higher gross weight was developed for the US light-sport aircraft category and was marketed from about 2009 to 2016 by Gobosh Aviation as the Gobosh 800XP.^[2][3] By 2016 the Gobosh Aviation company website had been taken down and the company had likely gone out of business.^[6]

Operational history

A VL-3 set a world two-seat ultralight class record of 274.78 km/h (170.74 mph) in 2005.^[2][3]

Variants

Aveko VL-3 FG Sprint

VL-3 FG

Fixed landing gear model^[2]

VL-3 RG

Retractable landing gear model^[2]

VL-3C-1

Model with fixed landing gear and a slower wing and 600 kg (1,323 lb) take-off weight for the light-sport aircraft category.^[3]

Specifications (VL-3 Sprint)

Aveko VL-3 FG Sprint

JMB VL-3 Evolution RG at AERO Friedrichshafen 2019

Data from Bayerl and JMB Aircraft^[2][7][8]

General characteristics

• Crew: one
• Capacity: one passenger
• Length: 6.24 m (20 ft 6 in)
• Wingspan: 8.44 m (27 ft 8 in)
• Height: 2.05 m (6 ft 9 in)
• Wing area: 9.77 m² (105.2 sq ft)
• Empty weight: 290 kg (639 lb)
• Gross weight: 472.514144 kg (1,042 lb)
• Fuel capacity: 90 to 120 litres (20 to 26 imp gal; 24 to 32 US gal)
• Powerplant: 1 × Rotax 912ULS four cylinder, liquid and air-cooled, four stroke aircraft engine, 75 kW (101 hp)

Performance

• Maximum speed: 280 km/h (170 mph, 150 kn)
• Cruise speed: 250 km/h (160 mph, 130 kn)
• Stall speed: 53 km/h (33 mph, 29 kn)
• Never exceed speed: 305 km/h (190 mph, 165 kn)
• Range: 3,333 km (2,071 mi, 1,800 nmi)
• Rate of climb: 6 m/s (1,200 ft/min)