Jonker Sailplanes JS-MD 3, Руководство по эксплуатации самолета

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JS-MD 3
Aircraft Flight Manual
MD10-AFM-00-001
Issue: 01
Rev. 00 Rev. Date: 14-Feb-20 Page 3
–10
Flight with asymmetric water ballast load
Asymmetric water ballast load may develop during flight if:
1. A main tank dump valve leaks.
2. One main tank dumps water faster than that the other, due to a
partial opening valve, or dumping during prolonged unbalanced
flight.
3. Only one main tank valve opens during water dumping.
A developing asymmetry is easily recognizable due to the increased roll
tendency towards the heavy wing. At low airspeed a considerable
amount of aileron deflection is necessary to keep the wings level.
When a developing asymmetry is observed, perform the following to
prevent full asymmetry developing:
1. If a lateral asymmetry is detected but no water was dumped
during the flight, there may have been a leak from one tank. The
procedure to follow is:
•
Start to dump water.
•
Monitor the change in roll tendency: If the roll tendency
reduces, keep dumping until symmetry is restored. Stop
dumping immediately if the roll tendency worsens.
If a lateral asymmetry develops while dumping water, one valve might
not have opened or opened partially. The procedure to follow is:
•
Visually check if water is dumping from both wings (the water
trails can be seen below the wings near the fuselage, and at
the tips in the 18 m configuration).
•
If both valves are dumping, keep dumping until both wings
empty.