ULPower UL520i

UL520i
UL520i
Type	Aircraft engine
National origin	Belgium
Manufacturer	ULPower

The ULPower UL520i is a Belgian aircraft engine, designed and produced by ULPower Aero Engines of Geluveld for use in homebuilt aircraft.

Design and development

The engine is a six-cylinder four-stroke, horizontally-opposed, 5,254 cc (320.6 cu in) displacement, air-cooled, direct-drive, gasoline engine design. It employs dual electronic ignition and produces 180 to 200 hp (134 to 149 kW) at 3300 rpm.

Variants

UL520i: Base model with fuel injection and a compression ratio of 8:1, producing 180 hp (134 kW) at 3300 rpm
UL520iS: Model with 8.7:1 compression ratio, fuel injection, producing 200 hp (149 kW) at 3300 rpm
UL520iST: Model under development, fuel injection, turbo-normalizer, producing 220 hp (164 kW) at 2700 rpm sea level
UL520iSA: Inverted oil system version of the UL520iS, producing 200 hp (149 kW) at 3300 rpm
UL520iHPS: Model under development
UL520iSRR: Model with reversed rotation, 8.7:1 compression ratio, fuel injection, producing 200 hp (149 kW) at 3300 rpm

Applications

Specifications (UL520i)

Data from Tacke and manufacturer

General characteristics

Type: Six-cylinder, four-stroke aircraft engine
Bore: 105.6 mm (4.2 in)
Stroke: 100 mm (3.9 in)
Displacement: 5,254 cc (320.6 cu in)
Length: 723 mm (28.5 in)
Width: 736 mm (29.0 in)
Height: 472 mm (18.6 in)
Dry weight: 108 kg (238.1 lb), ready to fly

Components

Fuel system: fuel injection
Fuel type: gasoline
Cooling system: air
Reduction gear: none

Performance

Power output: 180 hp (134 kW) at 3300
Compression ratio: 8:1

References

1 2 3 4 Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015-16, pages 262-263. Flying Pages Europe SARL, 2015. ISSN 1368-485X
1 2 ULPower Aero Engines. "UL520i". ulpower.com. Retrieved 21 April 2018.
↑ ULPower Aero Engines. "UL520iS". ulpower.com. Retrieved 21 April 2018.
↑ Eddy (26 February 2020). "ULPower Aero Engines presents prototype UL520iSTurbo at Sun n Fun and Aero Friedrichshafen". ulpower.news. Archived from the original on 4 March 2020. Retrieved 4 March 2020.
↑ ULPower Aero Engines. "UL520iSA". ulpower.com. Retrieved 21 April 2018.
↑ ULPower Aero Engines. "UL520iHPS". ulpower.com. Retrieved 21 April 2018.
↑ ULPower Aero Engines. "UL520iSRR". ulpower.com. Retrieved 21 April 2018.
↑ "Aircraft". www.darkaero.com. Retrieved 9 June 2020.{{cite web}}: CS1 maint: deprecated archival service (link)

External links

Official website

[WDLA15-1] 1 2 3 4 Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015-16, pages 262-263. Flying Pages Europe SARL, 2015. ISSN 1368-485X

[ul-2] 1 2 ULPower Aero Engines. "UL520i". ulpower.com. Retrieved 21 April 2018.

[3] ULPower Aero Engines. "UL520iS". ulpower.com. Retrieved 21 April 2018.

[4] Eddy (26 February 2020). "ULPower Aero Engines presents prototype UL520iSTurbo at Sun n Fun and Aero Friedrichshafen". ulpower.news. Archived from the original on 4 March 2020. Retrieved 4 March 2020.

[5] ULPower Aero Engines. "UL520iSA". ulpower.com. Retrieved 21 April 2018.

[6] ULPower Aero Engines. "UL520iHPS". ulpower.com. Retrieved 21 April 2018.

[7] ULPower Aero Engines. "UL520iSRR". ulpower.com. Retrieved 21 April 2018.

[8] "Aircraft". www.darkaero.com. Retrieved 9 June 2020.{{cite web}}: CS1 maint: deprecated archival service (link)