Site preparation
3-8
Chapter 3: Installation
98-150471-A02
3.2.6
ADU mast design: Foundation and height
The ADU mast must be designed to carry the weight of the ADU unit, which is 126,5 kg (+
the weight of the mast flange). The mast must also be able to withstand on-board
vibrations and wind speeds up to 110 knots on the radome, even in icing conditions.
ADU mast flange
Fit the top of the ADU mast with a flange with clearance holes matching the bushings in the
radome and with minimum 4 gusset plates. No center hole is necessary in the flange.
•
Flange thickness
: Minimum 15 mm.
•
4 gusset plates
: Minimum 15 mm thick, must be placed close to the holes in the
mounting plate and evenly distributed.
Recommended flatness on the mast mount plateau is below 3,0 mm.
Figure 3-6:
SAILOR 900: ADU
mast flange, top and side view
Figure 3-7: ADU mast flange, recommended flatness on the mast mount
plateau
Gusset plates
(15 mm thick)
15 mm
Max. 440 mm
SAILOR900HP.book Page 8 Monday, July 18, 2016 12:44 PM
