The Stemme S12 is a German
high-wing
A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplanes, which have multiple planes.
A monoplane has inherently the highest efficiency and lowest drag of any wing co ...
, two-seat
motor glider
A motor glider is a fixed-wing aircraft that can be flown with or without engine power. The FAI Gliding Commission Sporting Code definition is: a fixed-wing aerodyne equipped with a means of propulsion (MoP), capable of sustained soaring flight ...
produced by
Stemme of
Strausberg. It was introduced at
AERO Friedrichshafen
AERO Friedrichshafen is a trade show dedicated to European general aviation. It is held yearly in April on the shores of Lake Constance at the exhibition center of Friedrichshafen, Germany right next to Friedrichshafen Airport
Friedrichshaf ...
in April 2015, shortly after its first flight.
Design and development
Based in the
Stemme S10, the Stemme S12 features a cantilever wing, a
T-tail
A T-tail is an empennage configuration in which the tailplane is mounted to the top of the fin. The arrangement looks like the capital letter T, hence the name. The T-tail differs from the standard configuration in which the tailplane ...
, a two-seats-in-
side-by-side configuration
Tandem, or in tandem, is an arrangement in which a team of machines, animals or people are lined up one behind another, all facing in the same direction.
The original use of the term in English was in ''tandem harness'', which is used for two ...
enclosed cockpit under a
bubble canopy
A bubble canopy is an aircraft canopy constructed without bracing, for the purpose of providing a wider unobstructed field of view to the pilot, often providing 360° all-round visibility.
The designs of bubble canopies can drastically vary; s ...
and a single engine with a retractable propeller.
The aircraft is made from
composite material
A composite material (also called a composition material or shortened to composite, which is the common name) is a material which is produced from two or more constituent materials. These constituent materials have notably dissimilar chemical or ...
. Its span wing employs
winglets
Wingtip devices are intended to improve the efficiency of fixed-wing aircraft by reducing drag. Although there are several types of wing tip devices which function in different manners, their intended effect is always to reduce an aircraft' ...
. The mid-fuselage-mounted engine is the
Rotax 914 F2/S1 four-stroke turbocharged powerplant driving a retractable, folding, variable-pitch propeller. Its maximum
glide ratio
In aerodynamics, the lift-to-drag ratio (or L/D ratio) is the lift generated by an aerodynamic body such as an aerofoil or aircraft, divided by the aerodynamic drag caused by moving through air. It describes the aerodynamic efficiency under giv ...
is 53:1.
Specifications (S12)
See also
*
List of gliders
This is a list of gliders/ sailplanes of the world, (this reference lists all gliders with references, where available)
Note: Any aircraft can glide for a short time, but gliders are designed to glide for longer.
By nationality
* List of Amer ...
References
External links
*
{{Stemme aircraft
2010s German sailplanes
Single-engined tractor aircraft
High-wing aircraft
Motor gliders
Glider aircraft
T-tail aircraft
Mid-engined aircraft
Aircraft first flown in 2015