Description of the radar set, tactical-technical characteristics
Figure 1: ORB-31
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ORB-31 is operating in the X-Band modular radar that can be configured to fit a number of helicopters for surface search, target designation, missile fire control, weather monitoring, navigation, anti-surface warfare and anti-submarine warfare missions. The radar used a parabolic antenna in sector mode, providing a fan beam pattern.
The SA 319B Alouette III could be fitted with ORB 31 radar for maritime warfare, accommodated in a bulbous nose fairing attached to the front cockpit glazing.
Development began in the 1970s. The flight test took place in December 1974.