Drawing the Bow
The venerable CF-100 Canuck was the first interceptor of Canadian design, entering
service in 1952. Despite its simplistic design, the Canuck was the workhorse of
Canada’s early NORAD operations, with later marks being equipped with air to air
missiles. The last aircraft was retired in the early 1980s after service as a research
aircraft.
The Avro CF-105 Arrow was the second interceptor of Canadian design to enter production, following the earlier CF-100 Canuck. Much as the earlier CF-100 had shared the avionics of the F-94 Starfire, the CF-105 was originally intended to utilize the Hughes MA-1 fire control radar of the F-106 Delta Dart, as well as the Pratt & Whitney J75. With the cancelation of the F-106 program the Arrow was at risk of becoming a technological orphan before it even entered service, as both the MA-1 and J75 production lines ceased operation. Fortunately, the Orenda Iroquois was always intended for later mark Arrows and development of the engine was accelerated for earlier availability.
The Orenda Iroquois remains the most powerful fighter engine in the world over 50
years after its first run. It is capable of 40,000 lbf wet thrust and was the first aircraft
production engine to make extensive use of titanium and other lightweight materials.
The Iroquois was the most powerful and advanced engine in the world in the late 1950s, achieving 30,000 lbf wet thrust in early versions. The thrust was further increased in later variants, with the Iroquois Mark III reaching 40,000 lbf wet thrust in 1961, a record that stands today for fighter aircraft engines. Despite the engine’s great power it weighed only 4,650 pounds due to Orenda’s pioneering use of titanium and other lightweight metals, giving even Mark I engines a better power to weight ratio than the F-108’s J93 engines.
The Avro Arrow featured Canada’s first domestic radar, the powerful Ferranti-Packard
Blue Owl. The pictured radar set was used in early development and is now displayed
in the Canada Aviation and Space Museum.
Avro had a more difficult time finding a replacement for the MA-1, as American regulators were unwilling to license the system to Canada, fearing the loss of American electronics technologies. Faced with the daunting prospect of developing an advanced radar system independently, the future of the Arrow seemed bleak, even coming close to cancellation by Prime Minister Pearson as cost overruns mounted and threatened planned social programs. Fortunately for the Arrow program, the United Kingdom’s own interceptor program was experiencing greater difficulty, with no aircraft capable of matching the performance of the Soviet Myasishchev M-50 bomber expected in service before 1962. In contrast, the Avro Arrow was already surpassing performance expectations, had excellent short field performance, and possessed significant engine and airframe growth potential. Avro was awarded a major Royal Air Force contract for CF-105 aircraft, but most importantly for the future of the program was granted licenses for radar and electronics systems developed for the BAC TSR-2 program. Combined with Avro’s newly developed fly-by-wire system, the Arrow’s avionics were as innovative as its engines. Within a few short years Canada had gone from largely license producing American and British designs to developing an aircraft superior to anything in the world.
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This is part 1 of Avro’s update. There will likely be at least one additional update for the Arrow, as well as another for Avro’s special projects (lenticular vehicles, SSTs, etc.). My initial round of updates for all the countries is only supposed to run through the early to mid-1960s, but Avro and the Arrow had a lot of potential. Since I’m saving them from bankruptcy in this timeline I figure the company deserves the extra explanation.