After some 7,000 hours of development testing, up to a simulated altitude of 70,000 feet (21,300 m) and a forward speed of Mach 2.3, the Orenda Iroquois program was canceled, along with the Arrow in February 1959.
The Orenda Iroquois program was canceled. This was along with the Arrow in February 1959. This was up to a simulated altitude of 70,000 feet (21,300 m). This was after some 7,000 hours of development testing. This was after a forward speed of Mach 2.3.