SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK
Arcus M
FLIGHT MANUAL
Water ballast in (optional) fin tank
Important Note:
When determining the maximum usable load in the fuselage, the quantity
of water ballast in the fin does not need to be taken in account because of
flight mechanic reasons.
In order to avoid exceeding the maximum permitted all-up weight (mass), the
ballast in the fin tank must also be taken into account when determining the
maximum allowable ballast quantity for the wing tanks.
Example:
Assumed ballast load in wing tanks:
40 kg/Litres
(88 lb/10.6 US Gal)
Assumed load on aft seat:
75 kg (165 lb)
According to the diagrams on page 6.2.8 the following loads in the fin tank are
permissible (fill only full Litres):
For ballast in wing tank :
m
FT
=
2
kg/Litre
(4.4 lb/0.53 US Gal)
For load on aft seat :
F
m
FT
= 8
kg/Litres
(17.6 lb/2.11 US Gal)
Total ballast in fin tank :
m
FT
+
F
m
FT
= 10 kg/Litres
(22.1 lb/2.64 US Gal)
October 2011
Revision --
6.2.7
