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Avro Newsletter:Roll Out of the Avro Arrow

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Rollout, Pg2

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Pays Tribute
To All Arrow
Contributors

Fred T. Smye, President
And General Manager,
Addresses Big Gathering

The supersonic era of powered flight in Canada was ushered in today at Malton, with the first public viewing of the supersonic Avro Arrow.
 
Termed by President Fred T. Smye, "one of the most advanced combat aircraft in the world", the big delta winged aircraft rolled out of Bay I on a signal from the Honourable George R. Pearkes, V.C., Minister of National Defence, in the presence of a representative gathering of Military,Government, and Industry, together with as many Avroites as could possibly be spared from their work for the period of the ceremony.
  
In his address, Mr. Smye said: "The Avro Arrow is a twin engine, long range, day and night supersonic interceptor. It has a crew of two. It is a big, versatile aircraft. The loaded weight of the Arrow is in the order of 30 tons.
  
"Primary armament of the aircraft is to be air-to-air guided missiles, installed in a detachable armament bay in the fuselage. The versatility provided by this armament bay will enable the aircraft to perform other roles.
  
"The aircraft will be equipped with one of the most advanced integrated electronics systems, which will combine the navigation and operation of the aircraft with its fire control system.
  
"The Arrow is designed to operate from existing runways.
  
"I believe it can be said that the Arrow is one of the most advanced combat aircraft in the world. It has been designed to meet the particular requirements of the RCAF for the defence of Canada.
  
"I wish to emphasize that this aircraft is by no means a hand-made prototype. On the contrary, it has been produced from very complete production tooling. This policy has been followed so that when the aircraft development has been completed, we will be able to move into the production phase without undue delay. Furthermore, an aircraft of the complexity and preciseness of the Arrow requires extensive tooling to ensure accuracy of manufacture.
  
"This ceremony today is one of great significance to all of us at Avro and, we would like to think, to the Canadian aviation industry. The Arrow represents years of extremely hard work by our engineers, technicians, and craftsmen.
  
"It is the result of constant probing into new and unknown technical areas to meet the ever advancing requirements.
  
"We feel that this airplane represents a substantial technical achievement - that it demonstrates the capability of Canadian technology, and represents a substantial Canadian contribution to the western world.
  
"I cannot help but say how proud I am of the employees of Avro who have created what I think will become known as a great airplane.
(Continued on Page 12, Col. 1)

Avro

Aircraft

Engineering

And

Production

Teams

Turn Out

Canada's

First

Supersonic

Jet

Intercepter

From...

  Large-scale Free-Flight Models were used in early development stages of the Arrow, to gather aerodynamic data. A model is seen here being readied on its launching rig with a Nike rocket booster in firing position.

 

Proposal To Product

In Record Four Years

By Harry Wilby

    CANADA'S first supersonic jet aircraft rolled from the end of Avro Aircraft's assembly line today-a little more than four years after the CF-105 proposal was first submitted to the Royal Canadian Air Force.
     In addition to rolling out in much better than average time, this Canadian designed, twin-engine, delta-wing interceptor was completely fabricated and assembled with production tooling and methods-the first time that such a prototype has appeared in the history of Canadian aviation.
     The unveiling ceremonies today culminate what began some six years ago as the germ of an idea in the minds of a small group of creative engineers headed by J. C. Floyd, now Vice-President Engineering. Although the supersonic delta concept was not new, these people felt it was possible for Canada, through the engineer and production facilities of Avro Aircraft, to design and produce in quantity, an advanced aircraft type to meet the threat of future developments of potential enemy bombers.

All-Weather Interceptor
    
The initial step in the undertaking which produced the first Arrow took place in September 1951. At that time the company submitted to the RCAF a brochure containing three proposals for an advanced supersonic fighter.

    One of these was a delta wing design for an all-weather interceptor, powered by two Sapphire 4 engines, and manned by a crew of two. As a result of these proposals, an operational requirement for an "All-Weather Interceptor" was received from the RCAF the following March. Basically, this requirement was for an internally-armed aircraft capable of intercepting and destroying a supersonic, enemy bomber at very high altitudes.

Delta Planform Chosen
    
The delta planform version was chosen for further development. This was because it offered the best compromise between a thin wing section-required for supersonic fligbt and sufficient physical depth in the wing root section to house the undercarriage plus the large amount of fuel that was required for such a mission. The engineers calculated that the delta also gave an efficient and relatively light structure with good general control at transonic speeds.
     Both single and twin engine aircraft were considered in the design studies that followed. Company engineers felt that the twin engine version would have a marked increase in performance because it had twice the thrust, but did not need double the fuselage frontal area to accommodate the engines. Two engines would also give increased reliability.

 

Economic considerations led to the inclusion of "flexibility of tactical use" in the design to give it a long and useful life through continued development. In doing this it was necessary to ensure that this flexibility did not jeopardize the calculated performance of the aircraft, or its ability to meet the RCAF's specification requirements.
     In June 1952 Avro issued brochures to the RCAF on "Designs to Interceptor Requirements" under the designation of C104/1 and C104/2. Both proposals were of delta planform, the C104/1 with single engine, and the larger, heavier, C104/2 with twin engines. Each aircraft carried a crew of two, with provision for missiles and rockets.
     Engines under consideration for both proposals were the Curtiss-Wright J67, the Bristol Olympus 3, and the Avro TR 9. Electronic fire control systems were included in the designs.
     National Aeronautical Establishment analysis of the C104/1 and C104/2 proposals
Early Wind Tunnel models produced data which led to refinements in the external shape.
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