FES Flight Manual, v1.18 May 2020
Page 18 of 35
4.4 Pre-flight inspection
• Check the sailplane itself before a flight.
• Perform a short preflight FES test run as described below.
4.4.1 Preflight test run
After recharging the battery packs, you must perform a short motor run, so that the
FCU can detect the new charge level and store it to the FCU memory.
It is advisable to conduct a test run before the first flight on a flying day.
1. Remove propeller covers and tail dolly.
2. Open the battery compartment cover.
3. Check: Power switch OFF.
4. Switch ON the BMS on each battery pack and wait until the initial check is
completed.
5. Connect the battery packs using the connecting cable.
6. Close the battery compartment cover and seal it with tape.
7. Sit into the glider and close the canopy.
8. Check that no one is around propeller zone, in front of the glider or in line of the
propeller.
9. Switch ON the FCU instrument.
10. Switch ON the power switch.
11. Wait about 5 seconds for the FCU to show battery capacity.
12. Start the motor but use only low power to check proper operation.
Caution
: If you want to test the system at maximum power, somebody
must hold the fuselage, so that glider cannot lift the tail, which could damage
the propeller.
Warning
: Do not run the motor for a longer time on the ground, especially
not at high power! When the motor is not running, it does not cool itself. The
motor temperature can rise very quickly, leading to a damaged motor!
13. Stop the motor and check if automatic positioning is working fine.
14. Switch OFF the power switch.
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