Site preparation
3-8
Chapter 3: Installation
98-146706-A
3.2.6
Mast foundation and height
The ADU mast must be designed to carry the weight of the ADU (126 kg), plus 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.
Follow the guidelines in the sections:
•
•
ADU mast flange
To prepare the mast flange do as follows:
1. 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.
2. Make sure that the recommended flatness on the mast mount plateau is below 3,0 mm.
Figure 3-6: 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
SAILOR900Ka-IM-98-146706.book Page 8 Thursday, July 16, 2015 11:07 AM
