Ehroflug Coach II S

The Ehroflug Coach II S is a Swiss ultralight aircraft, designed by Egon Scheibe and produced by Ehroflug of Altnau. It was introduced in 1989. The aircraft is supplied as plans, as a kit for amateur construction or as a complete ready-to-fly-aircraft.[1][2][3]

Coach II S
Role Ultralight aircraft
National origin Switzerland
Manufacturer Ehroflug
Designer Egon Scheibe
Introduction 1989
Status In production
Produced 1989-present
Number built 15 (1998)
Unit cost
€36,000 (assembled, 2015)

Design and development

The aircraft was designed to comply with the Fédération Aéronautique Internationale microlight rules. It features a strut-braced parasol wing a two-seats-in-side-by-side configuration open cockpit, fixed conventional landing gear and a single engine in tractor configuration.[1][2][3]

The aircraft fuselage is made from welded steel tubing, with the wing built from aluminium tubing with wooden ribs. The airframe is covered in doped aircraft fabric. Its 11.34 m (37.2 ft) span wing has an area of 15 m2 (160 sq ft) and is supported by cabane struts, V-struts and jury struts. The wings are quickly detachable for storage. Standard engines available are the 70 hp (52 kW) Sauer 2.1 four-stroke Volkswagen air-cooled engine and the 64 hp (48 kW) Rotax 582 two-stroke powerplant.[1][2][3]

While still in production in 2015, the aircraft was only built on request.[2]

Specifications (Coach II S)

Data from Bayerl and Purdy[1][3]

General characteristics

  • Crew: one
  • Capacity: one passenger
  • Wingspan: 11.34 m (37 ft 2 in)
  • Wing area: 15 m2 (160 sq ft)
  • Empty weight: 230 kg (507 lb)
  • Gross weight: 450 kg (992 lb)
  • Fuel capacity: 45 litres (9.9 imp gal; 12 US gal)
  • Powerplant: 1 × Sauer 2.1 four cylinder, air-cooled, four stroke aircraft engine, 70 kW (94 hp)
  • Propellers: 2-bladed wooden

Performance

  • Maximum speed: 125 km/h (78 mph, 67 kn)
  • Cruise speed: 100 km/h (62 mph, 54 kn)
  • Stall speed: 50 km/h (31 mph, 27 kn)
  • g limits: +5/-3
  • Rate of climb: 2 m/s (390 ft/min)
  • Wing loading: 30 kg/m2 (6.1 lb/sq ft)
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References
  1. Bayerl, Robby; Martin Berkemeier; et al: World Directory of Leisure Aviation 2011-12, page 44. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X
  2. Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015-16, page 44. Flying Pages Europe SARL, 2015. ISSN 1368-485X
  3. Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, Fifth Edition, page 149. BAI Communications, 15 July 1998. ISBN 0-9636409-4-1
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