Airmak J4

The Airmak J4 is an Italian ultralight and light-sport aircraft designed and produced by Airmak S.r.l. of Capua. The design's first flight was in early 2011. The aircraft is supplied complete and ready-to-fly.[1]

J4
Role Ultralight aircraft and Light-sport aircraft
National origin Italy
Manufacturer Airmak S.r.l.
First flight early 2011
Status In production (2015)
Produced 2012-present

Design and development

The aircraft is produced by Airmak S.r.l., a joint venture between Rafaelle Violetti and Valter Proietti of OMA Sud. It is manufactured at OMA Sud's Italian facility. Production commenced in the middle of 2012.[1][2]

The J4 was designed to comply with the Fédération Aéronautique Internationale microlight rules and US light-sport aircraft rules. It features a strut-braced high-wing, a two-seats-in-side-by-side configuration enclosed cabin accessed by doors, fixed tricycle landing gear and a single engine in tractor configuration.[1]

The aircraft fuselage is made from welded steel tubing, with riveted aluminum tail and wings. Its 9.44 m (31.0 ft) span wing has an area of 11.6 m2 (125 sq ft), employs a custom Iannotta airfoil and mounts flaps. The standard engine used is the 100 hp (75 kW) Rotax 912ULS four-stroke powerplant.[1][3]

As of January 2017 the design does not appear on the Federal Aviation Administration's list of approved special light-sport aircraft.[4]

Operational history

Reviewer Marino Boric described the design in a 2015 review as "elegant".[1]

Specifications (J4)

Data from Tacke and manufacturer[1][3]

General characteristics

  • Crew: one
  • Capacity: one passenger
  • Length: 7.40 m (24 ft 3 in)
  • Wingspan: 9.44 m (31 ft 0 in)
  • Height: 2.49 m (8 ft 2 in)
  • Wing area: 11.6 m2 (125 sq ft)
  • Airfoil: Iannotta
  • Empty weight: 330 kg (728 lb)
  • Gross weight: 600 kg (1,323 lb)
  • Fuel capacity: 108 litres (24 imp gal; 29 US gal)
  • Powerplant: 1 × Rotax 912ULS four cylinder, liquid and air-cooled, four stroke aircraft engine, 75 kW (101 hp)
  • Propellers: 3-bladed composite

Performance

  • Cruise speed: 200 km/h (120 mph, 110 kn)
  • Stall speed: 60 km/h (37 mph, 32 kn) flaps down
  • Never exceed speed: 280 km/h (170 mph, 150 kn)
  • Range: 1,070 km (660 mi, 580 nmi)
  • Service ceiling: 6,100 m (20,000 ft)
  • g limits: +3.8/-2,2
  • Rate of climb: 4.5 m/s (890 ft/min)
  • Wing loading: 51.7 kg/m2 (10.6 lb/sq ft)

Avionics

References
  1. Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015-16, page 24. Flying Pages Europe SARL, 2015. ISSN 1368-485X
  2. Airmak. "Chi Siamo". Archived from the original on 10 January 2017. Retrieved 9 January 2017.
  3. Airmak. "J4". Archived from the original on 9 January 2017. Retrieved 8 January 2017.
  4. Federal Aviation Administration (26 September 2016). "SLSA Make/Model Directory". Retrieved 8 January 2017.
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