PRIMUS
r
1000 Integrated Avionics System
A28--1146--112--00
B--11
PRIMUS
â
660 Weather Radar System
TILT MANAGEMENT
Figures B--4 and B--5 show the relationship between tilt angle, flight
altitude, and selected range. The figures show the distance above and
below aircraft altitude that is illuminated by the flat--plate radiator during
level flight with 0
_
tilt and shows a representative low altitude situation,
with antenna adjusted for 3.95
_
up--tilt.
E
LE
VA
T
IO
N
IN
F
E
E
T
80,000
70,000
60,000
50,000
30,000
20,000
10,000
0
0
25
50
RANGE NAUTICAL MILES
100
AD--35693@
CENTER OF RADAR BEAM
20,000 FT
20,000 FT
41,800 FT
41,800 FT
10,500 FT
10,500 FT
7.9
ZERO TILT
Radar Beam Illumination High Altitude
12--Inch Radiator
Figure B--4
Radar Beam Illumination Low Altitude
12--Inch Radiator
Figure B--5
