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  Topic: Jumo211a 4 spark plugs /cylinder ?
admin02

Replies: 1
Views: 253

PostForum: DB, Junkers, Other German Engines   Posted: Fri Aug 16, 2024 05:57   Subject: Jumo211a 4 spark plugs /cylinder ?
I don't think so. Please see the [url=https://www.enginehistory.org/BBimages/JunkersJumo211Ign.jpg]schematic
  Topic: Axial and centrifugal compressors in the same engine
admin02

Replies: 9
Views: 5884

PostForum: Gas Turbines   Posted: Fri Dec 01, 2023 22:01   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: Oil Skate?
admin02

Replies: 8
Views: 2857

PostForum: Pratt & Whitney Engines   Posted: Sun Dec 06, 2020 17:04   Subject: Oil Skate?
Kim, did you get the pictures I emailed? Not sure if it worked..

Yes, I got the drawing. Click on "Figure 6-129"

Also notice the manual says (modification of magneto planetary gear)
T ...
  Topic: why is that forum so hard to find???
admin02

Replies: 1
Views: 2721

PostForum: Help With Using This Bulletin Board   Posted: Wed Mar 11, 2020 12:51   Subject: Re: why is that forum so hard to find???
I think it would be great, if there would be a link from the front page to the forum section

There IS a link from the front page to the forum; it is called BULLETIN BOARD
  Topic: Wright Aircraft engine manufacture
admin02

Replies: 5
Views: 4275

PostForum: Wright Engines   Posted: Wed Aug 14, 2019 15:56   Subject: Wright Aircraft engine manufacture
You are correct about the Permatex, but you must realize that the Grand Canyon resulted from a Wright Aeronautical manager thinking he'd lost a quarter...
They COULD have used a sealant, but that wou ...
  Topic: How supersonic inlets work
admin02

Replies: 9
Views: 6472

PostForum: Technical Discussion   Posted: Tue Dec 04, 2018 15:32   Subject: Re: How supersonic inlets work
Q. Do you have a more detailed explanation for what happens?

Please see [url=http://www.enginehistory.org/members/Convention/2014/Presentations/SR-71InletDesign.pdf]http://www.enginehistory.org/mem ...
  Topic: R-1830 for Hump duty
admin02

Replies: 3
Views: 6404

PostForum: Pratt & Whitney Engines   Posted: Tue Nov 27, 2018 10:14   Subject: R-1830 for Hump duty
According to Wikipedia, C-47Bs, powered by R-1830-90 engines with two-speed superchargers with better altitude performance, were used to cover the China-Burma-India routes; 3,364 were built
  Topic: How supersonic inlets work
admin02

Replies: 9
Views: 6472

PostForum: Technical Discussion   Posted: Tue Nov 27, 2018 10:08   Subject: Re: How supersonic inlets work
Q. In what way did the increased engine flow help the inlet?

More air through the engine meant more air through the inlet and a corresponding increase in the inlet's thrust contribution.
  Topic: This bulletin board is difficult to find
admin02

Replies: 1
Views: 6333

PostForum: Help With Using This Bulletin Board   Posted: Tue Sep 10, 2013 19:07   Subject: This bulletin board is difficult to find
Done!
 
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