Testing
Wind tunnel tests demonstrated the engine's successful operation under sustained high inlet temperatures, and the ability to make normal relights up to 60,000 ft (18,290 m), the limit of the wind tunnel in which the tests were conducted. By 1958, the Iroquois had completed more than 5,000 hours of ground running, and many thousands of hours had also been spent testing the engines' principal components, at the Orenda testing facilities at Nobel, near Parry Sound, Ontario.
In 1956, a U.S. Boeing B-47 Stratojet was loaned to the Royal Canadian Air Force to flight test the Iroquois for use in the CF-105. Canadair, the sub-contractor, attached an Iroquois to the right side of the bomber's rear fuselage, near the tail, simply because there was no other place to mount it. Designated CL-52 by Canadair, it was a nightmare to fly, since the thrust was asymmetrical; this created great problems for flight control. After the Arrow project was cancelled, the B-47B/CL-52, which had logged about 35 hours of engine flight tests, was returned to the U.S and subsequently scrapped. The CL-52 was the only B-47 used by any foreign service.
After some 7,000 hours of development testing, including tests up to a simulated altitude of 70,000 feet (21,300 m) and a forward speed of Mach 2.3, the program was cancelled, along with the Arrow, on 20 February 1959.
Read more about this topic: Orenda Iroquois
Famous quotes containing the word testing:
“Traditional scientific method has always been at the very best 20-20 hindsight. It’s good for seeing where you’ve been. It’s good for testing the truth of what you think you know, but it can’t tell you where you ought to go.”
—Robert M. Pirsig (b. 1928)
“No testing has overtaken you that is not common to everyone. God is faithful, and he will not let you be tested beyond your strength, but with the testing he will also provide the way out so that you may be able to endure it.”
—Bible: New Testament, 1 Corinthians 10:13.
“Today so much rebellion is aimless and demoralizing precisely because children have no values to challenge. Teenage rebellion is a testing process in which young people try out various values in order to make them their own. But during those years of trial, error, embarrassment, a child needs family standards to fall back on, reliable habits of thought and feeling that provide security and protection.”
—Neil Kurshan (20th century)