Dynali H3 EasyFlyer

The Dynali H3 EasyFlyer, now known as the Sport, is a Belgian helicopter designed and produced by the Dynali of the Thines district of Nivelles. The aircraft is supplied complete and ready-to-fly-aircraft or as a kit for amateur construction.^[1]

H3 EasyFlyer
Role	Helicopter
National origin	Belgium
Manufacturer	Dynali Helicopter Company
Status	In production (2017)

Design and development

The H3 was designed for the flight training, utility and personal-use roles. It was designed to comply with the European Class 6 microlight helicopter rules, in particular the French Class 6 Microlight Category, at a gross weight of 450 kg (992 lb). It features a single main rotor and tail rotor, a two-seats-in side-by-side configuration enclosed cockpit with a bubble canopy, skid landing gear and a four-cylinder, liquid and air-cooled, four stroke 100 hp (75 kW) Rotax 912ULS engine, a Dynali-developed fuel-injected 110 hp (82 kW) conversion Rotax 912ULS-1 engine or a 115 hp (86 kW) turbocharged Rotax 914 powerplant.^[1][2]

The aircraft's gross weight varies from 450 kg (992 lb) for the microlight category, with heavier weights available depending on installed power in other national categories, such as light-sport aircraft. With the Rotax 912ULS engine, the gross weight is 500 kg (1,102 lb), 550 kg (1,213 lb) with the Rotax 912ULS-1 and 600 kg (1,323 lb) with the Rotax 914.^[1][2]

The aircraft fuselage frame is made from welded stainless steel tubing. Its two-bladed rotor has a diameter of 7.14 m (23.4 ft) and a chord of 18.5 cm (7.3 in). With the Rotax 914 engine the aircraft has a typical empty weight of 290 kg (639 lb) and a gross weight of 600 kg (1,323 lb), giving a useful load of 310 kg (683 lb). With full fuel of 60 litres (13 imp gal; 16 US gal) the payload for the pilot, passenger and baggage is 267 kg (589 lb).^[1][2]

Specifications (H3)

Data from Tacke and manufacturer^[1][3]

General characteristics

• Crew: one
• Capacity: one passenger
• Empty weight: 285 kg (628 lb)
• Gross weight: 500 kg (1,102 lb) in the LSA category
• Fuel capacity: 60 litres (13 imp gal; 16 US gal)
• Powerplant: 1 × Rotax 912ULS four cylinder, liquid and air-cooled, four stroke aircraft engine, 75 kW (100 hp)
• Main rotor diameter: 7.14 m (23 ft 5 in)
• Main rotor area: 40 m² (430 sq ft)

Performance

• Cruise speed: 130 km/h (81 mph, 70 kn)
• Never exceed speed: 155 km/h (96 mph, 84 kn)
• Endurance: 3 hours
• Service ceiling: 3,000 m (10,000 ft)
• Rate of climb: 4.6 m/s (900 ft/min)
• Disk loading: 12.5 kg/m² (2.6 lb/sq ft)

See also

• List of rotorcraft
• Dynali H2S