UL-Jih Evolution
{{short description|Czech ultralight aircraft}}
| {{Infobox Aircraft Begin
| name=Evolution | image= | caption= }}{{Infobox Aircraft Type | type=Two seat ultralight/kitbuilt | national origin=Czech Republic | manufacturer=UL-Jih Sedláĉek Spol s.r.o. | designer=Jaroslav Sedláĉek | first flight=16 February 2002 | introduced= | retired= | status= | primary user= | more users= | produced= | number built=at least six by 2005 | program cost= | unit cost= E80: €62,500 (2010) | developed from= | variants with their own articles= }} |
The UL-Jih Evolution is a conventionally laid out, two-seat, high-wing, single-engine ultralight, designed and built in the Czech Republic. Two variants were available in 2010.
Design and development
The first version of the Evolution, originally designed by Jaroslav Sedláĉek of the Czech company UL-Jih was marketed by WD Flugzeugleichtbau of Germany as the Dallach D.5 Evolution with series production starting in 2002. UL-Jih fabricated both this model and the earlier D.4 Fascination and claimed sole production and marketing rights to both when WD Flugzeugleichtbau ceased trading in 2005, though those rights are challenged by Swiss Light Aircraft AG who build their own versions.
The Evolution is an all-composite aircraft, which uses the same cantilever wings, control surfaces and empennage as the Fascination but has a high-wing configuration, rather than the latter's low wing. The wing is of trapezoidal plan, with ailerons that have external balance trim tabs and sealed nosegaps. Inboard, there are electrically operated Fowler flaps. The fuselage becomes slender towards the tail, where the trapezoidal tailplane is set at mid-height, the elevators having a small cutout for rudder movement. The fin is swept but the rudder has vertical edges; it extends to the bottom of the fuselage. The underwing cabin seats two in side-by-side configuration, with access via glazed side doors. The Evolution has a retractable tricycle undercarriage; all three legs retract rearwards into the fuselage, on which they are mounted. A ballistic recovery parachute is available as an option.
The Evolution may be powered either by a 73.5 kW (98.6 hp) Rotax 912ULS or a 59.6 kW (79.9 hp) Rotax 912UL.
Operational history
At least six Evolutions had been built by the time WD ceased trading in 2005 and 15 appeared on the mid-2010 civil registers of European countries, excluding Russia.
Variants
;E80:
:Rotax 912UL engine.
;E100:
:Rotax 912ULS engine.Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015–16, page 50. Flying Pages Europe SARL, 2015. {{ISSN|1368-485X}}
Specifications (E100)
{{Aircraft specs
|ref=Jane's All the World's Aircraft 2011/12
|prime units?=met
|genhide=
|capacity=two|length m=6.98
|length note=
|span m=9.00
|span note=
|height m=2.10
|height note=
|wing area sqm=10.76
|wing area note=gross
|aspect ratio=
|airfoil=
|empty weight kg=305
|empty weight note=
|gross weight kg=
|gross weight lb=
|gross weight note=
|max takeoff weight kg=472.5
|max takeoff weight note=
|fuel capacity=120 L (31.7 US gal; 26.4 Imp gal)
|more general=
|eng1 number=1
|eng1 name=Rotax 912ULS
|eng1 type=Four cylinder four stroke, air- and water-cooled
|eng1 kw=73.5
|eng1 note=geared down 1.43:1
|power original=
|more power=
|prop blade number=3
|prop name=Rospeller constant speed
|prop dia m=
|prop dia ft=
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|prop dia note=
|perfhide=
|max speed kmh=290
|max speed mph=
|max speed kts=
|max speed note=
|cruise speed kmh=270
|cruise speed note=
|stall speed kmh=65
|stall speed note=flaps extended
|never exceed speed kmh=
|never exceed speed note=
|minimum control speed kmh=
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|minimum control speed note=
|range km=1400
|range note=with maximum fuel
|ferry range km=
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|ferry range note=
|endurance=
|ceiling m=4570
|ceiling note=
|g limits=+4.0/-2.0
|roll rate=
|glide ratio=
|climb rate ms=8.5
|climb rate note=maximum at sea level
|time to altitude=
|lift to drag=
|wing loading kg/m2=
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|wing loading note=
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References
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External links
- {{official website|http://www.uljih.cz/homeeng.php|name=UL-Jih website}}
{{UL-Jih aircraft}}