SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK
Ventus-3T „Sport“
FLIGHT MANUAL
April 2018
CS 22
Revision –
4.5.7.1
4.5.7
Flight with water ballast
To reach maximum permitted all up mass, it is necessary to carry water ballast.
Wing ballast tanks
The water tanks are integral compartments in the nose section of the wing
panels. Three water tanks are integrated in each wing.
The outboard tank (in the outboard wing panel) is linked to the next middle
tank (in the inboard wing panel). Connection is automatically done when
rigging the outboard wing panel.
These tanks are to be filled with clear water only, through 6 round openings in
the upper wing surface.
The openings are closed with filler caps provided with thread. The filler caps
have a slit and may be opened with the help of the rigging tool or a coin.
A hole in the filler cap serves for venting the tank. The hole features a valve
preventing the loss of a bigger amount of water when the wings are i.e. placed
on the ground.
Warning:
The hole in the filler caps must always be kept open and not taped!
Keep the valve and the plastic ball in it always clean. No grease or
oiling.
The capacity of each tank of both wings is:
-
inboard wing tank
46 Liter (12.15 US Gal., 10.12 IMP Gal.)
-
inboard middle tank
106 Liter (28.00 US Gal., 23.32 IMP Gal.)
-
outboard wing tank
26 Liter ( 6.87 US Gal., 5.72 IMP Gal.)
The water ballast is dumped in two steps. In the first step only the inboard tanks
are dumped, additionally in the second step the middle tanks, the outboard tanks
and the fin tank will be dumped.
