FES Flight Manual, v1.18 May 2020
Page 34 of 35
unless it is covered with high-quality all-weather covers. It is recommended to remove FES
batteries out of the glider and store them in a dry place!
d) Preparation for road transport
Warning:
If sailplane is parked, stored or transported remove the cable
connecting the FES-battery packs!
e) Transportation of batteries
When carrying the batteries by the carrier strap, care must be taken to prevent the
batteries from getting damaged, e.g. by being dropped or hitting them on edges etc.
Furthermore, the batteries must be protected against moisture.
When you are transporting the batteries (by car, in the trailer, etc.), they must be
protected against mechanical damage and moisture. For the protection against mechanical
damage, a solid box must be used. It is recommended to use original FES transport boxes.
For safety reasons, the transport box should be placed into the luggage
compartment, pushed against the front wall. Transportation box should be additionally
secured by straps so that it cannot move during acceleration or braking.
Warning:
For safety reasons, it is not allowed to transport the battery packs
in the passenger compartment of the car, behind drivers or co-drivers seat
or in front of the co-driver seat for instance. In case of an accident, this
could be very dangerous!
Note:
It is not recommended to transport battery packs in the front area of
glider trailer. In heavy rain, most front hatches leak water, which could spill
over the battery packs.
Caution:
Do not leave battery packs in the parked car or trailer under the
sun in summer, as they might be exposed to high temperatures.
8.5 Sailplane trailer
A sailplane with an FES system should be transported and stored in a high-quality
enclosed trailer constructed of metal or fibreglass reinforced plastics with proper insulation
and ventilation characteristics.
• The forward fuselage support for lighter fuselages can be implemented as a nose
cone support in the shape of the spinner with a recess big enough to clear the
propeller blades in a horizontal position, covered with a soft thick material.
• The forward support for heavier fuselages must hold the fuselage behind the
spinner. Otherwise, the loads on the motor and propeller blades could be too high.
Such a nose is optionally available for Cobra trailers.
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