Avro Canada CF-105 Arrow

Cold War Origins and Strategic Imperative

The development of the Avro Arrow was a direct response to the strategic threats of the early Cold War. Following the Second World War, the Soviet Union rapidly developed a fleet of long-range jet bombers capable of carrying nuclear weapons across the Arctic to targets in North America. The primary defence strategy for Canada and the United States involved intercepting these bombers before they could reach their targets. The Royal Canadian Air Force's existing interceptor, the Avro CF-100 Canuck, was a capable all-weather aircraft but was subsonic and would soon be outclassed by newer Soviet designs. Recognizing this vulnerability, the RCAF began planning for a supersonic successor even before the Canuck entered full service. In March 1952, the RCAF submitted its Final Report of the All-Weather Interceptor Requirements Team to Avro Canada, formally initiating the search for a next-generation aircraft.

A.V. Roe Canada Limited, a subsidiary of the British Hawker Siddeley Group, had been established in 1945 at Malton, Ontario. The company had already designed and built the CF-100, though its development was lengthy and troubled. The RCAF was determined to avoid similar delays with the new interceptor, given the accelerating pace of Soviet bomber development. The geopolitical stakes were dramatically raised in 1953 with the testing of a Soviet hydrogen bomb and the introduction of the jet-powered Myasishchev M-4 Bison bomber. These events transformed the project from a technical study into a national defence priority, creating immense pressure to field a world-class interceptor as quickly as possible to guard North America's northern approaches.

Evolution of the Design

Avro's engineers explored several aerodynamic solutions to achieve supersonic flight. Initial studies focused on modifying the CF-100 with swept wings, a design known as the CF-103. This concept offered improved transonic performance but was ultimately abandoned as the basic CF-100 itself achieved supersonic flight in a dive in late 1952. Attention then turned to the delta wing configuration, which offered significant advantages for the interceptor role. The delta wing provided ample internal volume for fuel and systems, generated substantial lift at high altitudes, and exhibited favourable transonic and supersonic characteristics. Its main drawbacks were higher drag at lower speeds and during manoeuvres, which were considered acceptable for an aircraft designed primarily for high-speed, high-altitude interception runs.

These studies crystallized into the C104 design proposals submitted to the RCAF in June 1952. The favoured C104/2 was a twin-engine delta-wing aircraft. Intensive discussions with the RCAF led to the formal specification AIR 7-3 in April 1953. This demanding specification called for a twin-engine, two-crew aircraft capable of Mach 1.5 at 70,000 feet, with a rapid climb time and quick ground turnaround. An RCAF evaluation team concluded that no existing or planned aircraft from the United States, Britain, or France could meet these requirements. In response, Avro submitted the modified C105 design in May 1953, which became the basis for the CF-105 Arrow. A key innovation was moving the wing to a shoulder-mounted position on the fuselage, which simplified construction and allowed easy access to the internal weapons bay and engines.

Technological Innovations and Development Challenges

The Arrow incorporated several groundbreaking technologies. Its thin delta wing necessitated the first 4,000 psi hydraulic system in aviation to effectively move the control surfaces. The aircraft employed a rudimentary fly-by-wire control system where pilot inputs were transmitted electronically to hydraulic servos. Since this severed the mechanical feedback pilots relied on, engineers developed an innovative 'artificial feel' system that used actuators in the control stick to simulate aerodynamic forces. The airframe construction was conventional but utilized titanium around the engine bays. To accelerate the program, Avro adopted the risky Cook-Craigie production plan, setting up the assembly line first and building initial aircraft as production models rather than hand-built prototypes.

A massive testing program supported this approach. Extensive wind tunnel tests and computer simulations were conducted in Canada and the United States. Between 1954 and 1957, nine instrumented, one-eighth scale models were launched on solid-fuel rockets from Point Petre over Lake Ontario for aerodynamic testing, reaching speeds over Mach 1.7 before crashing into the water. The program faced significant setbacks with its intended armament and engines. The advanced RCA-Victor Astra fire-control system and the US Navy's Sparrow II missile were selected, but both were immature and faced delays. The preferred Rolls-Royce RB.106 engine was cancelled, as was its backup, the Wright J67. This forced the use of the American Pratt & Whitney J75 engine for the initial Mk. 1 aircraft, while Orenda Engines in Canada raced to develop the more powerful Iroquois engine for the production Mk. 2 version.

Rollout and Flight Testing Program

The first complete Arrow, designated RL-201, was unveiled to the public at Avro's Malton plant on 4 October 1957. The company had orchestrated a major event with over 13,000 guests, but media attention was overwhelmingly captured by the Soviet Union's launch of the Sputnik 1 satellite that same day. The Mk. 1 aircraft were equipped with the interim J75 engines and carried ballast in place of the unfinished Astra fire-control system. RL-201 made its maiden flight on 25 March 1958 with Chief Development Test Pilot Janusz Żurakowski at the controls. The flight test program proceeded with four additional Mk. 1 aircraft built over the next eighteen months.

Testing revealed the Arrow to be an exceptional aircraft with excellent handling characteristics. It went supersonic on its third flight and soon demonstrated a top speed of Mach 1.90 in steady level flight, with an indicated Mach 1.95 recorded in a dive. The aircraft's performance was largely attributed to its delta-wing design and effective Stability Augmentation System. The test flights were limited to proving basic airworthiness and flight characteristics, as the planned weapons system was not yet installed. Some minor issues emerged, primarily with the complex, narrow tandem main landing gear designed to fit within the thin wing. Two landing incidents involving gear collapses occurred, one due to a jammed mechanism and another related to a flight control command that reduced weight on the wheels during landing. Despite these, no fundamental design flaws were discovered, and the aircraft was meeting or exceeding performance expectations.

The Sudden Cancellation and Destruction

On 20 February 1959, the government of Prime Minister John Diefenbaker abruptly announced the termination of the entire Arrow program. The cancellation halted development of both the aircraft and the Orenda Iroquois engine, just as the first Mk. 2 Arrow equipped with the Canadian engine was nearing completion for taxi tests. The official reasons cited were soaring project costs, which had reached hundreds of millions of dollars, and a shifting defence philosophy. The government argued that the threat from manned bombers was diminishing in favour of intercontinental ballistic missiles, against which interceptors like the Arrow were useless. There was also frustration over the inability to secure international sales to the United States or Britain to help defray costs.

The cancellation order was followed by a directive to destroy all existing aircraft, tooling, plans, and technical data. In April 1959, the five flying Arrows and the nearly complete sixth airframe were cut apart and scrapped. Jigs, blueprints, and even engine cores for the Iroquois were similarly destroyed. This action was unprecedented in its thoroughness and remains deeply controversial. It effectively ended Avro Canada as an aircraft manufacturer, leading to the layoff of thousands of highly skilled engineers and technicians, many of whom subsequently moved to the United States to work on the NASA space program. The destruction ensured that no complete Arrow would survive, transforming the aircraft into a physical void around which myth and speculation could grow.

Search for Remnants and Cultural Legacy

The literal erasure of the Arrow has fueled decades of speculation and searches for surviving pieces. A persistent myth suggests that complete aircraft were secretly hidden or sunk in Lake Ontario. This notion is partly rooted in the known fact that the nine rocket-launched scale models from the development phase did crash into the lake. Authentic artifacts are rare and highly prized. Small components, documents, blueprints, and memorabilia are held in museums like the Canada Aviation and Space Museum in Ottawa and the Canadian Warplane Heritage Museum in Hamilton.

The Avro Arrow occupies a unique place in Canadian national consciousness. It is remembered not merely as an aircraft, but as a symbol of a lost pinnacle of Canadian engineering and technological ambition. Its story is a frequent subject of documentaries, books, and political debates about industrial policy and national sovereignty. The narrative often contrasts the brilliance of its design with the tragedy of its cancellation, framing it as a moment when Canada voluntarily relinquished a leading role in aerospace. The Arrow endures as a powerful cultural icon, representing both national pride in achievement and lingering regret over opportunities perceived to have been lost.

Questions about Avro Canada CF-105 Arrow

Why was the Avro Arrow cancelled?

The Avro Arrow program was cancelled by Prime Minister John Diefenbaker's government on 20 February 1959. The primary reasons were escalating costs, which had reached hundreds of millions of dollars, and a strategic shift in defence thinking. The government believed the threat from Soviet intercontinental ballistic missiles was surpassing the threat from manned bombers, which the Arrow was designed to intercept. Additionally, attempts to sell the aircraft to the United States or Britain to share development costs had failed, making the project a significant financial burden for Canada alone.

How fast could the Avro Arrow fly?

During flight testing, the Arrow demonstrated impressive speed capabilities. The highest confirmed speed was Mach 1.90 achieved in steady, level flight. An indicated airspeed of Mach 1.95 was recorded during a dive. While some estimates suggested a potential maximum speed of Mach 1.98, the Avro report clarifies this was likely an extrapolation to compensate for instrument lag. The aircraft was designed to cruise at Mach 1.5 at high altitude, which it achieved. The planned Mk. 2 version with the more powerful Orenda Iroquois engines was expected to enhance this performance further.

Are there any full Avro Arrows left?

No complete Avro Arrow aircraft exist today. As part of the cancellation order in 1959, the Canadian government mandated the destruction of all airframes, tooling, and plans. The five completed Mk. 1 aircraft and the nearly finished Mk. 2 were all cut apart and scrapped. While some small components, documents, and models survived in archives and private collections, every full-sized Arrow was physically destroyed. This comprehensive eradication is a key reason the aircraft maintains such a legendary and mysterious status in Canadian history.

Were Arrows sunk in Lake Ontario?

There is no evidence that full-sized Arrow aircraft were sunk in Lake Ontario. The origin of this myth likely stems from the known use of the lake for testing scale models during development. Between 1954 and 1957, nine one-eighth scale models were launched on rockets over the lake for aerodynamic tests and subsequently crashed into the water. Private recovery groups have located fragments of these models. However, historical records confirm the completed Arrows were dismantled at the Avro plant in Malton, Ontario, and their scrap metal was sold to local foundries.

What made the Avro Arrow technologically advanced?

The Avro Arrow incorporated several pioneering technologies for its time. It was one of the first aircraft to use a fly-by-wire flight control system, where electronic signals from the pilot's stick operated the hydraulic controls. It also featured an innovative 'artificial feel' system to simulate control forces for the pilot. Its thin delta wing required the first 4,000 psi hydraulic system to power the control surfaces. The aircraft was designed from the outset to carry its weapons in a large internal bay to reduce drag, and it utilized advanced materials like titanium in critical areas. Its design promised Mach 2 performance at altitudes over 50,000 feet.

What happened to the Avro workers after the cancellation?

This sudden dissolution of Canada's premier aerospace engineering team had a profound 'brain drain' effect. Many of the highly skilled engineers, technicians, and designers emigrated, primarily to the United States. A significant number found work with the National Aeronautics and Space Administration (NASA) and its contractors, contributing directly to the Mercury, Gemini, and Apollo space programs. Their expertise thus flowed into the American space race, a poignant footnote to the end of Canada's own ambitious aerospace project.

Sources: Wikipedia and current public reporting, checked by the Nosy Mag desk. Last updated 2026-10-19.