The VB-1 Azon was a WW2 radio-controlled bomb which was commanded in the azimuth direction; hence its name. In other words, it was controllable in azimuth. This type of bomb was fitted with a tail assembly which housed the radio receiver, gyros, and electric motor to actuate the aerodynamic controls. This assembly replaced the ordinary tail.
The gyro assembly was composed of two gyros; the directional gyro, which provided a reference for directional control; and a rate gyro, which provided a rate control about this reference. It used ailerons, which was selenoid-operated, giving an oscillation of about -/+5 degrees. The control would be greater during the latter part of the trajectory as the bomb picked up speed and moved into atmosphere of a greater density.
A pyrotechnic flare at the rear of the bomb, which was ignited approximately 6 seconds after release, gave a high intensity light. This marked the bomb position relative to its target as it fell so that the bombardier could see it. The usual procedure was to guide the bomb along a road, or imaginary line that would intersect the target. Thus, some experience on the part of the controller would prove most valuable.
Below, the tail assembly of the radio-controlled bomb.
VB-1 Azon (historical video)
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