Orenda and the Computer - John Duggan, Flight-Lieutenant Ba Peng (ret'd)
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- čas přidán 20. 04. 2011
- "Voices from the Canada Aviation and Space Museum", a new documentary film series produced by the Canada Aviation and Space Museum, in collaboration with Outsiders Films Inc., focuses the spotlight on men who have left their mark on Canada's aviation history.
John Duggan shares his experiences of working with an electronic calculator, now commonly known as a computer, on the infamous Orenda engine for A.V.Roe Canada Limited, and how the use of this new technology greatly influenced the effectiveness and power of the Canadair Sabres. - Věda a technologie
Right now an Orenda 10 and an Orenda 14 are in my shop. We have noticed the difference in compressor airfoil shapes mentioned in this video. Very interesting!
Please keep us posted on getting these engines operational!
Hey man! whats the update on the Orenda Iroquois engine!
Didn’t the Iroquois become Whitney and Pratt sr 71
Over 70% of all R&D in Canada in the late fifties, was being done at the corner of Airport & Derry Rd. at A.V.Roe Canada Ltd. They led the world in many tech developments at that time. The Orenda 11-14 series had the highest thrust to weight ratio of any jet engine, after the development described above. Eight of them are still in use today at the Pickering Nuclear Generating Station to provide standby power in case of increased demand. At the Darlington Nuclear Generating Station, the standby generators are Bristol Olympus 593s....pretty much Orenda Iroquois engines. An Iroquois was found in pieces in one of Bristol's shops about 17 years ago, by a Canadian who knew where to look, It had been shipped to England in the late fifties for an air show. When the CF-105 Avro Arrow was cancelled , and scrapping was about to begin, the British called Avro Canada and informed them that they had an Iroquois in England. They were asked to keep quiet about it. The Iroquois was 30,000 lbs of thrust with burners lit, as tested by Canada's National Research Council.
Didn't this Iroquois find its' way back to (I think) Brampton. and it isn't being presently restored? I do believe that there is another more recent chapter to this story. Anyone able to furnish more information?
@@ZeldaZiplock one engine sits in the Ottawa Military aero space museum and the second engine is in British Columbia in private storage.
The one in the museum is mostly complete if I am not mistaken and the one in private hands is/was being restored. But nothing has happened in a few years with it.
The guy actually has a CZcams that chronicles some of the restoration.
@@ZeldaZiplock if you are interested, this is the private owner of the other Iroquois
czcams.com/users/AgentJayZ
Like I said though, it's been years since he's worked on it. Mainly because he's doing it for free and can't devote his shop time to it exclusively. It also has missing parts that either need to be bought and or machined from scratch
Encredible info Mf...just jumping over to reference the Bristol 593's...
I still will never understand the politics....why not, at least put Iroquois' in CF-100s or the 101's
Cheers.
@@rpm1796 The French wanted Iroquois Engine for the fighter they were then designing. The Government said no. Pratt & Whitney, in Hartford Connecticut, had a signed contract with A.V. Roe Canada, to build the Iroquois under license. The Government said no to that as well. See "Storms of Controversy" by Paul Campagna.....The Soviets had a spy ring operating inside Avro and Orenda from 1953-1955, run by a double agent who went by the name "David Sobloff" they had 11 people supplying top secret information to "Sobolff (real name Evgeny Brik) funneled through a guy at Avro Canada who was a member of the Canadian Communist Party. (see "Shattered Illusions" by ex RCMP & CSIS Operative Donald G. Mahar, published in 2017 and also "For Services Rendered" by Journalist John Sawatsky, published in 1982) The Soviets also likely had people well placed in positions of influence within the Canadian Government, and Military and research circles as has been documented to have occurred in Britain and the United States. In his book "This Was My Choice" (1948) Igor Gouzenko lists the aims of Soviet espionage in Canada and one of those aims was to place people under their control in positions where they could influence policy decisions.
Well the idea for the ICL 1900 series was Canadian :)
Made In Canada by our BFFs.
fyi 5k thrust to 7k thrust is only a 40% increase ... 8k thrust would be a 60% increase
each compressor stage is essentially a recursive calculation taking one answer to create the next one and so on ... you can do each sperately but then have to adjust each equation with the answer from the previous equation
5000lbs to 7000lbs is not 60% more thrust. More like 40% more. So really 140% total from the original 100%.
They obviously don't teach math in Canadian schools
John Lagas I'm thinking more alongs the line of he's older and been retired now and his mind is letting go of critical thinking, You'll see when you'll get to be his age how you'll learn to let go and when faced with critical thinking it's going to aggravate you. Especially when you start to forget information that you once knew really well. I'm more amazed that the person interviewing him didn't tell him or edit that part out.
My calc comes out at 40% more. And for John, no, they don't teach arithmatic anymore, but they did when Mr. Duggan was a kid.
@@artjohnLagas-gk6mg and he called it a 'turban' like an illiterate Murican. It is correctly pronounced Turb-eye-n.
@@stevenarseneault1972 Isn't the beast behind beautiful, even though only a few percent of her remains. I'm old too. Unfurtunately, just a little to young to have ever seen her.