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Updated 30 Aug 2012

Orenda PS-13 Iroquois Engine

Sept 1956, PS-13 engine achieves 1,000 hours of run time.

The Iroquois engine was unveiled on 22 July 1957.
While the Iroquois Rollout ceremony was not as grand as the Arrow Rollout ceremony in Oct, there were VIPs in attendance:
George R. Pearkes, V.C., Minister of National Defence; Air Marshall C.R.Sleman, Chief of Air Staff, RCAF; John Tory, QC, Member of the Board, A.V. Roe Canada Ltd.; Fred Syme, Executive Vice President, A,V. Roe Canada Ltd.; Wilf Curtis, Vice Chairman, Board of Directors, A.V. Roe Canada Ltd.; Walter R. McLachan, President, Orenda Engines Ltd.
John Pallett, MP for Peel; Nathan Phillips, Mayor of Toronto; Roland Michener, MP for St. Paul; Ozzie Waffle, Reeve of Etobicoke Township; John B. Hamilton, MP for York West; Reeve Mary Fix of Toronto Township;
A/C B.J.R Roberts, Air Attache UK; Col R.H. Jones, Air Attache USA; Major C. Orhun, Air Attache Turkey; Col F.C. Schlichting, Air Attache Germany; Col A.R. Deperrois, Air Attache France;

Speeches at the Iroquois Rollout were given by:
Walter R. McLachan, President, Orenda Engines Ltd.
Air Marshall C.R.Sleman, Chief of Air Staff, RCAF
George R. Pearkes, V.C., Minister of National Defence, who then unveiled the Iroquois, the cover being lifted by Marg Fry and Dolly Ford.

An Iroquois engine was fitted in a nacelle on the starboard (right) rear of a B-47 Stratojet that was on loan to the RCAF and AVRO from the USAF. This was the first time that foreign non-USAF personnel, especially civilians were trained on an American only bomber.  In flight full thrust had to be set on the port (left) outer engine in order to keep the aircraft flying straight to counteract the thrust from the single Iroquois mounted just off the centreline!

In Sept 1958 Orenda noticed that since the end of 1957 the letters of authorization had been amended to limit the government's liability only to authorized amounts leaving Orenda on the hook for any costs above that amount and termination costs if the programme was scrapped.

To the end of Mar 1959, the financial limitation was $116,976,614 for development, tooling, prototype and pre-production. Orenda's termination costs would amount to $150,646,745.

Engine X-116 on AVRO dolly and test fitted in RL206 for taxi trials.
Engines X-117 and X-118 were the first Iroquois engines that were to fly in an Arrow, RL206 and were being fitted when the programme was scrapped.

After the cancellation of the Arrow Programme:
Who got to scrap the engines and related tooling?
Engine X-104 which had been fitted to the B-47 for engine tests went to the NRC for icing trials.  It is now in the Canadian Warplane Heritage Museum, Mount Hope, Ontario.
Engine X-116 went to Bristol Siddeley, where it helped in evolution of the Olympus for the TSR2 (also cancelled) and the Concord.  X-116 then went to Cranfield College as a teaching aid and then tostorage in pieces at the RAF Hendon Museum, UK.

Orenda sells the manufacturing rights for the Iroquois engine to Curtis-Wright Corp. of the U.S. on 30 Sept 1957. Along with manufacturing rights was permission to sell and further develop the engine.

During the competition to replace the F-86 Sabre in Europe, Republic was offering Canada the F-105 Thunderchief with the Iroquois engine. However, the cost of producing it in Canada with the Canadian Iroquois engine proved to be prohibitive, therefore it was eliminated as a contender.



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