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  Topic: R-4360 Cam Disc
kmccutcheon

Replies: 3
Views: 1385

PostForum: Technical Discussion   Posted: Tue Mar 12, 2024 07:21   Subject: R-4360 Cam Disc

One reason for the cam drive change, I think, is the slower cam ring speed.
Slower surface speed for the lifter roller cam interface, as well as the ring support bearing.

I agree with this expl ...
  Topic: Popped up on my radar
kmccutcheon

Replies: 1
Views: 61

PostForum: Book, Mags, Films, Recordings, Reference   Posted: Wed Feb 21, 2024 12:12   Subject: Popped up on my radar
How was the Merlin book?
  Topic: Robert Raymond
kmccutcheon

Replies: 0
Views: 170

PostForum: In Memoriam   Posted: Sun Jan 14, 2024 08:47   Subject: Robert Raymond
Robert (Bob) Raymond, a prolific AEHS author, died on 4 Nov 2021. Bob combined the knowledge, experience, curiosity and analytical skills necessary to write a number of articles that investigated aspe ...
  Topic: Axial and centrifugal compressors in the same engine
kmccutcheon

Replies: 9
Views: 4699

PostForum: Gas Turbines   Posted: Fri Dec 01, 2023 22:04   Subject: Re: Axial and centrifugal compressors in the same engine
I have noticed that some turbo shaft and turbo prop engines have both a axial and centrifugal compressor. Any reason for this type of construction? A few examples of this are the P & W PT6 serie ...
  Topic: Video about TC-18
kmccutcheon

Replies: 2
Views: 414

PostForum: Wright Engines   Posted: Sun Nov 19, 2023 05:37   Subject: Video about TC-18
Thanks for posting that.
I like Greg's work; he presents things in context and does a good job of explaining complex topics.
  Topic: Seeking Wright Engine Specifications
kmccutcheon

Replies: 5
Views: 1591

PostForum: Wright Engines   Posted: Tue May 09, 2023 20:27   Subject: Seeking Wright Engine Specifications
Thank you!
  Topic: Wrong ADI fluid causes engine failure
kmccutcheon

Replies: 4
Views: 5035

PostForum: Authors' Corner   Posted: Sun Apr 30, 2023 20:53   Subject: Wrong ADI fluid causes engine failure
One little noticed form of water injection was used on international variants of the DC-8...
Tony,
That is quite a story. Ingenuity knows no limits!
  Topic: Bristol Cherub
kmccutcheon

Replies: 2
Views: 759

PostForum: British Engines   Posted: Sun Mar 12, 2023 16:17   Subject: Re: Bristol Cherub
Thanks for the article on the Bristol Cherub. Seems fitting that Bristol would make such a complicated valve drive mechanism!

Actually, it is quite simple... Think about the parts count. There are ...
  Topic: R-4360 Direct Fuel Injection
kmccutcheon

Replies: 2
Views: 763

PostForum: Pratt & Whitney Engines   Posted: Sun Nov 27, 2022 19:02   Subject: R-4360 Direct Fuel Injection
I've sent a few emails asking about direct-injection experience. It appears that the B-36 was the only user of P&W direct-injection R-4360s. Thus far, no response from anyone who worked on them.
  Topic: Can Anyone Identify This Engine?
kmccutcheon

Replies: 3
Views: 1391

PostForum: Non-Technical Discussion   Posted: Sun Oct 02, 2022 07:31   Subject: Can Anyone Identify This Engine?
Mike,
I identified it as a Lamabert 90, which I believe was a later instantiation of the Velie M-5. How does one tell the difference?
  Topic: Can Anyone Identify This Engine?
kmccutcheon

Replies: 3
Views: 1391

PostForum: Non-Technical Discussion   Posted: Mon Sep 19, 2022 08:26   Subject: Can Anyone Identify This Engine?
From a photo taken at Parks Air College, St. Louis, Missouri c 1930.
https://www.enginehistory.org/BBimages/IMG_2712.jpg
  Topic: Paul Palmgren
kmccutcheon

Replies: 0
Views: 680

PostForum: In Memoriam   Posted: Sat Sep 03, 2022 09:37   Subject: Paul Palmgren
I am saddened to report that Paul Palmgren passed away on 25 July.
Paul was an AEHS Charter Member who assisted the Society in so many ways. He helped locate and plan our first Convention. He wrote a ...
  Topic: Researching at National Archives - Current Status
kmccutcheon

Replies: 1
Views: 658

PostForum: Help with Projects, Research, Finding Information   Posted: Mon Aug 01, 2022 08:14   Subject: Researching at National Archives - Current Status
Thank you, Paul.
Every tip helps navigate this tough time for research.
  Topic: Anyone Work on Pratt & Whitney J57 or JT3C?
kmccutcheon

Replies: 0
Views: 781

PostForum: Gas Turbines   Posted: Thu Jul 14, 2022 06:00   Subject: Anyone Work on Pratt & Whitney J57 or JT3C?
An author researching a book is looking to interview persons who worked on the subject engines. If you care to participate, please contact the AEHS.
  Topic: Seeking Wright Engine Specifications
kmccutcheon

Replies: 5
Views: 1591

PostForum: Wright Engines   Posted: Thu Jul 07, 2022 08:03   Subject: Seeking Wright Engine Specifications
Thank you jriend and sithomas for the suggestions.
Unfortunately, neither source produced anything helpful, as I was looking for Duplex Cyclone 972TC18DA and 988TC18EA performance data.
I was succes ...
 
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