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VUT100 Cobra
Role	Light aircraft
National origin	Czech Republic
Manufacturer	Evektor-Aerotechnik
Status	Under development (2017)

The Evektor VUT100 Cobra (also called the VUT 100 and VUT-100) is a Czech light aircraft under development by Evektor-Aerotechnik, of Kunovice. The aircraft is intended to be supplied as a complete ready-to-fly-aircraft.^[1]

As of 2017 the manufacturer lists the aircraft as "in development".^[2]

Design and development

Around 1990, Czech company Moravan Otrokovice started a project to modernise its Zlín Z 42/Z 43 family of light aircraft.^[3] The redesign proved so complete that the company treated it as a new project with the designation Z 90 and displayed a mockup of it at the 1991 Paris Air Show.^[3]^[4] However, market conditions at the time were unfavourable, and work on the Z 90 halted without the aircraft entering production.^[4] Some work that had been done on the Z 90 was used in the Kappa 77 KP 2U-SOVA ultralight design, which allowed aspects of the design to be proven in practice.^[4]

By 2001, the market for general aviation aircraft had recovered sufficiently for the Czech Ministry of Industry and Trade to sponsor a new project to continue development of the Z 90 under the name VUT100.^[4]^[5] This project would be a collaboration between different Czech aviation manufacturing companies and the Institute of Aerospace Engineering at the Brno University of Technology.^[3]^[4]

The aircraft features a cantilever low-wing, a four-seat enclosed cabin, retractable tricycle landing gear and a single engine in tractor configuration.^[1]

The VUT100 is a hybrid construction of metallic and composite materials. Its 10.2 m (33.5 ft) span wing has an area of 13.11 m² (141.1 sq ft) and mounts flaps. The engines fitted vary, depending on the model and the cabin is 1.22 m (48 in) in width. The VUT100 is stressed for +3.8/-1.52g in the normal category and +4.4/-1.76g in the utility category.^[1]^[6]

Although designed to European CS-23 and American FAR-23 certification standards, the VUT100 does not currently have a type certificate issued by the European Aviation Safety Agency or the Federal Aviation Administration.^[7]^[8]

Variants

Zlín Z 90: Original design from 1990; not built
Evektor VUT100-120i Cobra: Base model with a 200 hp (149 kW) Lycoming IO-360-A1B6 four-stroke powerplant, an empty weight of 830 kg (1,830 lb) and a gross weight of 1,330 kg (2,930 lb), giving a useful load of 500 kg (1,100 lb).^[1]^[6]
Evektor VUT100-131i SuperCobra: Higher powered model with a 315 hp (235 kW) Lycoming IO-580-B1A four-stroke powerplant, an empty weight of 880 kg (1,940 lb) and a gross weight of 1,450 kg (3,200 lb), giving a useful load of 570 kg (1,260 lb).^[1]^[6]

Specifications (VUT100-131i SuperCobra)

Data from Bayerl and Evektor^[1]^[6]

General characteristics

Crew: one
Capacity: three passengers
Length: 8.0 m (26 ft 3 in)
Wingspan: 10.2 m (33 ft 6 in)
Wing area: 13.11 m² (141.1 sq ft)
Empty weight: 880 kg (1,940 lb)
Gross weight: 1,450 kg (3,197 lb)
Fuel capacity: 340 litres (75 imp gal; 90 US gal)
Powerplant: 1 × Lycoming IO-580-B1A six cylinder, air-cooled, four stroke aircraft engine, 235 kW (315 hp)
Propellers: 3-bladed Hartzell Propeller HC-F3YR-1RF constant speed, 1.93 m (6 ft 4 in) diameter

Performance

Maximum speed: 324 km/h (201 mph, 175 kn)
Stall speed: 103 km/h (64 mph, 56 kn)
Never exceed speed: 375 km/h (233 mph, 202 kn)
Range: 1,830 km (1,140 mi, 990 nmi)
Endurance: 6 hours
g limits: +3.8/-1.52g (normal category), +4.4/-1.76g (utility category)
Rate of climb: 7.6 m/s (1,500 ft/min)
Wing loading: 110.6 kg/m² (22.7 lb/sq ft)

References

^ ^a ^b ^c ^d ^e ^f Bayerl, Robby; Martin Berkemeier; et al: World Directory of Leisure Aviation 2011–12, page 163. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X
^ Evektor (2017). "VUT100 Cobra". evektoraircraft.com. Retrieved 21 April 2017.
^ ^a ^b ^c Sittek, Daniel (18 November 2009). "Síň slávy strojařů: Radost z práce pro letectví" [Machinist Hall of Fame: The Joy of Work for Aviation]. MM Průmyslové spektrum. MM publishing. Retrieved 2 June 2024.
^ ^a ^b ^c ^d ^e Píštěk, Antonín; Popela, Robert (1 February 2007). "The VUT 100/200 general aviation aircraft family: project and realization" (PDF). Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering. 221 (2). New York: Sage Journals: 193.
^ Baltus, Jan (28 November 2023). "Z praxe na akademickou dráhu" [From practice to academic career]. Technický týdeník. Prague: Business Media CZ. Retrieved 2 June 2024.
^ ^a ^b ^c ^d Evektor-Aerotechnik (n.d.). "Technical Data". Retrieved 19 December 2012.
^ European Aviation Safety Agency (18 December 2012). "EASA Aircraft Type Certificates – No matching records found". Retrieved 18 December 2012.
^ Federal Aviation Administration (18 December 2012). "Type Certificate Data Sheets – No results found". Retrieved 18 December 2012.