SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK
Arcus M
FLIGHT MANUAL
Water ballast in (optional) fin tank
In order to shift the centre of gravity close to its aft limit (favourable in terms of
performance), water ballast may be carried in the fin tank (m
FT
) to compensate
for the nose-heavy moment of:
„
water ballast in main wing panels (m
WT
)
and/or
„
loads on the aft seat (m
P2
)
Compensating water ballast in main wing panels
The determination of the ballast quantity in the fin tank (m
FT
) is done with the aid of
the diagram shown on page 6.2.8.
Compensating loads on the aft seat
Pilots wishing to fly with the centre of gravity close to the aft limit may
compensate the nose-heavy moment of loads on the aft seat with the aid of the
diagram shown on page 6.2.8.
Note: When using fin ballast to compensate for the nose - heavy moment of wing
ballast and loads on the aft seat, then both values resulting from the
diagrams on page 6.2.8 must be taken into account.
The maximum amount of water ballast, available for compensating the
above mentioned nose-heavy moments, is 11 Litres (2.91 US Gal., 2.42
IMP Gal.), which is the maximum capacity of the fin tank.
WARNING:
Compensation for masses exceeding the placarded minimum front
seat load by the use of water ballast in fin tank is n o t allowed!
If the influence of the load on the rear seat is taken into account for the
minimum load on the front seat, the nose-heavy moment of the load
on the rear seat may not be compensated with water ballast in the fin tank.
October 2010
Revision --
6.2.6
