RFZ-3&4

RFZ-3 was built in 1937 and was used primarily as a testing bed sort of craft, where it was used to test SM-Levitator units and Mag-Field Impulsers.

Later, in 1938 a larger craft was built known as RFZ-4. This craft was used just as well to test more flight equipment for flying saucers.

The RFZ-3 was also constructed in 1937 followed by the larger RFZ-4 in 1938. Both were used for continued flight testing which involved improving both the flight characteristics of the disc aircraft as well as the SM-Levitator units and Mag-Field Impulsers.
RFZ-4