Girish Mahajan (Editor)

Stemme S12

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Top speed
  
259 km/h

Length
  
8.42 m

Wingspan
  
25 m

Manufacturer
  
Stemme

Stemme S12 Stemme S12 receives EASA certification FLYER

Stemme s12 motorglider flight trial


The Stemme S12 is a German high-wing, two-seat motor glider produced by Stemme of Strausberg. It was introduced at AERO Friedrichshafen in April 2015, shortly after its first flight.

Contents

Stemme S12 AeroZentrum Europas grter Flugzeugmarkt

Landing stemme s12 in telluride


Design and development

Stemme S12 stemmes12novoavenda Aeronaves a Venda

The Stemme S12 features a cantilever wing, a T-tail, a two-seats-in-side-by-side configuration enclosed cockpit under a bubble canopy and a single retractable engine.

Stemme S12 wwwflyercoukwpcontentuploads201605Stemme

The aircraft is made from composite material. Its 25 m (82.0 ft) span wing employs winglets. The mid-fuselage-mounted engine is the 115 hp (86 kW) Rotax 914 F2/S1 four-stroke turbocharged powerplant driving a retractable, folding, variable-pitch propeller. Its maximum glide ratio is 53:1.

Specifications (S12)

Data from Grady

General characteristics

Stemme S12 Stemme Twin Voyager S12 YouTube

  • Crew: one
  • Capacity: one passenger
  • Length: 8.42 m (27 ft 7 in) (propeller retracted)
  • Wingspan: 25.0 m (82 ft 0 in) - 11.4 m (37.4 ft) span when folded
  • Height: 1.75 m (5 ft 9 in)
  • Wing area: 19.95 m2 (214.7 sq ft)
  • Aspect ratio: 31.33
  • Gross weight: 900 kg (1,984 lb) MTOW
  • Fuel capacity: 120 litres (26 imp gal; 32 US gal)
  • Powerplant: 1 × Rotax 914 F2/S1 four cylinder, liquid and air-cooled, turbocharged, four stroke aircraft engine, 86 kW (115 hp)
  • Propellers: two-bladed retractable, folding, variable-pitch propeller

    • Performance

    Stemme S12 Stemme S12 Wikipedia

  • Maximum speed: 259 km/h (161 mph; 140 kn) at 10,000 feet MSL
  • Cruise speed: 225 km/h; 122 kn (140 mph)
  • Range: 1,759 km (1,093 mi; 950 nmi)
  • Endurance: 9.2 hr @ 55% power
  • Maximum glide ratio: 53:1
  • Rate of climb: 4.21 m/s (829 ft/min)
  • Wing loading: 45.11 kg/m2 (9.24 lb/sq ft) at MTOW

    • Stemme S12 Stemme debuts S12 motor glider AOPA

    References

    Stemme S12 Wikipedia
    (Text) CC BY-SA