Nine Mini Rockets
The nine Avro Arrow prototypes were each around 10 feet (ca. 3 m) long. Their wingspan was around 6.5 feet (ca. 2 m). They weren’t quite carbon copies of their big sister, though. These mini-arrows ran on solid fuel.
They were mounted on rocket boosters in order to reach the speed needed to test the wings for drag and stability issues. Then they were launched, from Point Petre, Lake Ontario.