| 
The electric self-launch Silent
2 sailplane excels over its groundbreaking predecessor,
the electric version of the Silent Club which laid claim to
the title of world’s first series production electric-powered
aircraft. The combination of proven aerodynamic efficiency,
the latest in battery and charging technology,
advanced composites, and affordability make the lithium electric
Silent 2 a winner in every regard. The electric Silent 2 is
the most environmentally friendly solution
available and is able to satisfy the mutually exclusive objectives
of minimum noise, 42dB max, and an exceptional climb rate.
The 13kW Air Energy DC motor and the folding two-blade large
diameter propeller provide maximum efficiency. The high
performance lithium batteries assure a maximum altitude
gain of over 2000 meters (6500 feet) or maximum cruise range
of around 100 km (60 miles). This previously unheard of performance
allows for initial launch, in-flight save, and return-home
cruise flight, all on a single charge. Once the climb is complete,
retraction of the propeller pylon is simple and rapid, allowing
soaring flight to begin with minimal altitude loss. Thanks
to its incomparable handling (45° to
45° roll rate of 2.5 seconds), effective air brakes, and
full span flaperons that permit slow landings, the electric
Silent 2 promises lasting satisfaction for the pilot in search
of a truly unique sailplane. The Silent 2 has been subjected
to numerous tests including the controlled destructive testing
of two airframes. The airframe integrity
is also fully proven with a well documented history and numerous
flying aircraft. Electric propulsion is incredibly quiet,
clean, safe, reliable, and virtually maintenance-free.
There are no fuels to mix and, thanks to the computer controlled
charging system, your main focus can be exclusively on planning
the next flight.
| Silent
2 Brochure |
| |
|
|
|
| |
|
|
| Performance
|
| Stall
speed (VS): |
<
65 km/h |
| Maneuvering
speed (VA):
|
150
km/h |
| Maximum
speed (VNE):
|
220
km/h |
| Maximum
L/D: |
39
at 90
km/h |
| Minimum
sink rate: |
0.60
m/s at 85
km/h |
| Take-off
distance: |
150
m |
| Landing
distance: |
100
m |
| Climb
rate with engine: |
> 2.5
m/s |
| Maximum
altitude gain: |
2000
m |
Technical Data |
| Wing
span: |
13
m |
| Length: |
6.35
m |
| Height: |
1.25
m |
| Aspect
ratio: |
19.2 |
| Wing
area: |
8.8
m2 |
| Planform: |
Elliptical
(w/winglets)
|
| Profile: |
IMD
050 (16%) |
| Empty
weight: |
200
kg |
| Maximum
payload: |
100
kg |
| Maximum
take-off weight: |
300
kg |
| Wing
load factors: |
+4.6
g / -2.65 g
(at 150 Km/h)
+4.0 g / -1.5 g
(at 220 Km/h) |
| Wing
loading at 300 kg: |
34
kg/m2 |
| Flaperons: |
L
+4° 0° -4° S |
| Conventional
air brakes
|
| Fully
automatic control connections |
| Engine
power: |
13
kW |
| Engine
weight: |
8.5
kg |
| Engine
speed: |
3400
rpm |
| Propeller
speed: |
1300
rpm |
| Propeller
diameter: |
1.92
m |
| Weight
of batteries: |
36
kg |
| Battery
capacity: |
4.1
kWh |
| Standard
charge time: |
140
min at 220V |
Return
to Silent 2 home page
|
 Videogallery
 Photogallery
Efficiency
Curve
Speed
Polar
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