Control electronics
Display control unit
DC/DC converter
Propeller blades
»Canopy Open«
safety switch
Using experienced gained during development or the
Certified FES System, LZ Design were able to work with
HPH to determine the best way of adapting the Shark
sailplane to offer the electric “Self-Retrieve” capability.
TAS (km/h)
-0
12V PB battery
Wing span
18 m | 59 ft
Wing area
11,8 m2 | 127 ft2
Aspect ratio
Fuselage length
50
60
70
80
90
100
110
120
130
140
150
60
170
180
190
200
-0,5
-1
Ws (m/s)
Nose vent
Shark 304 ES
SPEED POLAR SHARK 304 ES 18M
GEOMETRY
FES motor
FES SYSTEM COMPONENTS
shark 304 ES 18m
27,43
-1,5
-2
m/s= 31,3 kg/m2
m = 370kg
-2,5
6,79 m | 22.28 ft
m/s=54 kg/m2
m=600 kg
-3
WEIGHTS
Empty weight
340 kg | 750 lb
maximum take-off weight
600 kg | 1323 lb
L/D POLAR SHARK 304 ES 18M
60
Water ballast
200 l | 52 US gal
Min. wing loading
37 kg/m2 | 7.5 lb/ft2
Max. wing loading
51 kg/m | 10.4 lb/ft
Cockpit range
2
40
2
70-110 kg | 154-242 lb
at speed
> 50
0,52 m/s | 104 ft/min
66 km/h | 36 kt
Climb Rate with FES
1,5–2 m/s
VNE
Range with FES
Performance is based on calculation data.
m/s= 31,3 kg/m2
m = 370kg
m/s= 50,8 kg/m2
m = 600kg
0
50
60
70
80
90
100
110
120
130
140
150
60
170
180
190
200
TAS (km/h)
ENGINE SYSTEM
Battery Technology
LIMITATIONS
Stall speed (at max. weight)
20
125 km/h | 67,5 kt
min. sink rate (at min. weight)
at speed
30
10
PERFORMANCE
Best glide ratio
50
L/D (–)
2x GEN2 batteries
T E C H N I C A L D ATA
88 km/h | 47,5 kt
260 km/h | 140 kt
~100 km
Battery Weight
LiPo GEN2 system
15kg | 33 lbs
Maximum Power
23 kW
Maximum RPM
4500
WWW. HPH.CZ
FRONT ELECTRIC SUSTAINER (FES)
© photography: Craig Lowrie, Matthias Fischer; © side view: M8; cross section: Luka Zinardic
• INSTANT START
THE FUTURE IS ELECTRIC
• LOW VIBRATION
• HIGH START RELIABILITY
• NO HEIGHT LOSS
With the introduction of the Shark 304ES, HPH move into
the electric sailplane arena. Its experience with powered
sailplanes and partnership with LZ Design continue the
approach of working with the best companies to bring
the Shark 304 ES to market quickly and with a very high
“out-of-the-box” product maturity.
The LXNAV FES controller is left powered for the duration of
the flight. After take-off, the FES power is enabled via a toggle
switch, whereupon the FES system is ready to offer immediate
thrust by rotating the knob clockwise. This knob controls the
power level. Rotating anti-clockwise stops the motor. The blades
are then parked automatically.
The Shark 304 ES delivers a significant battery-powered
self-retrieve capability of approximately 100km’s which
is more than enough to get you to an airfield or in many
cases back to soaring conditions or to your home base.
• SIMPLE OPERATION
• NO FUEL TO BUY OR MIX
The FES propeller is interlocked to prevent inadvertent
operation on the ground. The FES system automatically parks the blades and nose to ensure optimal
aerodynamic performance.
The system uses 2 GEN2 LiPo batteries which each come with a
dedicated balancing charger. One battery weighs ~15kg and only
looses about 1% of its charge in a month. They still retain 70 – 80%
of their charge after 1500 complete recharge cycles. Installing the
batteries takes about 5 minutes.
The FES propeller blades are protected during transport or when
on the airfield with a removable cover. The Cobra trailer nose
cone incorporates cut-outs for the propeller during transit.
M8 Medien Berlin | [email protected]
September 2015
THE HPH BASIC SYSTEM PRICE INCLUDES
• F ront Electric Sustainer system FES
• Two section wings and 18m Wingtips
• Integrated water tanks in the main wings
• F laperons – full span ailerons mixed with full span
flaps
• Automatic control and water system connections
• F orward hinged canopy with integrated instrument
panel
• Two lever Canopy jettison system
•O
ptimized energy absorbing safety cockpit
•1
4Ah Battery holder – in the front
• Adjustable rudder pedals
• CG Hook from TOST
•5
.00 x 5 wheel with hydraulic brake system,
operated on airbrake handle
• S hock break system on retractable undercarriage
•R
egistration + contest letters (UV-resistant micro tape)
•H
orizontal elevator mini tips
• Three bank air brakes suction side of the wing
•R
adio antenna in the vertical fin
• Total energy tube connections in the vertical fin
• P itot tube in the vertical fin
Specifications subject to change without notice.
HpH Ltd.
Čáslavská 234
28401 Kutná Hora
Czech Republic
tel +420 . 327 . 512 633
[email protected]
60km from Prague/CZ
N 49° 56' 47.9''
E 15° 17' 7.87''
THE 304 FAMILY
304 C WASP
15m FAI Standard Class
304 S SHARK
18m FAI Class
304 JS SHARK
18m FAI Class, with Jet TSS (Turbine Sustainer System)
304 MS SHARK
18m FAI Class, Selflauncher with BSS (Binder Solo System)
304 ES SHARK
18m FAI Class, Front electric sustainer (FES system)
304 TS TWIN SHARK20m FAI Class Two-Seater with BSS or TSS (in development)
MORE THAN 150 CUSTOMERS BELIEVE IN HPH SAILPLANES