| S12 Twin Voyager | |
|---|---|
 | |
| Stemme S12 at AERO 2016 | |
| Role | Motor glider |
| National origin | Germany |
| Manufacturer | Stemme |
| First flight | April 2015 |
| Introduction | April 2015 |
| Status | Under development (2015) In production (2017) [1] |
| Number built | >30 [2] |
| Developed from | Stemme S10 |
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. [3]
Based in the Stemme S10, 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 engine with a retractable propeller. [3]
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. [3]
The $8 million Dzyne Unmanned Long-Endurance Tactical Reconnaissance Aircraft (ULTRA) is an uncrewed derivative deployed as part of an affordable ultra-long endurance ISR demonstration, capable of flights up to 80 hours. [4]
Data from Grady [3]
General characteristics
Performance
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