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  Topic: R-2600 and R-3350
rinkol

Replies: 6
Views: 331

PostForum: Wright Engines   Posted: Thu Apr 25, 2019 09:05   Subject: R-2600 and R-3350
It seems that there is a big step involved in going from 14 to 18 cylinders due to problems involving:
- mechanical resonances
- mixture distribution
- cooling.

Perhaps the initial success of th ...
  Topic: Sunbeam-Coatalen Engine Catalogue
rinkol

Replies: 3
Views: 1206

PostForum: WWI Engines   Posted: Sun Jun 03, 2018 15:14   Subject: Sunbeam-Coatalen Engine Catalogue
There is some interesting information at http://www.historywebsite.co.uk/Museum/Transport/planes/SunbeamEngines7.htm

While describing the engine as "one of the worst engines produced during th ...
  Topic: Sunbeam-Coatalen Engine Catalogue
rinkol

Replies: 3
Views: 1206

PostForum: WWI Engines   Posted: Wed May 09, 2018 12:15   Subject: Sunbeam-Coatalen Engine Catalogue
I noticed the scanned catalog of Sunbeam aero engines that was recently posted on the AEHS web site. What caught my attention was that the Arab V8 was prominently featured at a time (January 1920) whe ...
  Topic: P&W Hornet B Problems
rinkol

Replies: 3
Views: 6582

PostForum: Pratt & Whitney Engines   Posted: Fri Jul 20, 2012 11:41   Subject: P&W Hornet B Problems
Todd

Thanks. I have the question of what the definition of "piston dishing" is. One sees the use of the word "dish" in the context of pistons having concave tops. In this case i ...
  Topic: HP Rating German vs British
rinkol

Replies: 1
Views: 4630

PostForum: Technical Discussion   Posted: Sun Apr 25, 2010 21:04   Subject: HP Rating German vs British
The BMW IIIa was a special case due to the optimization of the engine for high altitude performance. The main idea was to use an exceptionally high (for the time) compression ratio and throttle the e ...
  Topic: Flight Magazine Archives
rinkol

Replies: 1
Views: 3533

PostForum: Book, Mags, Films, Recordings, Reference   Posted: Wed Mar 05, 2008 11:21   Subject: Flight Magazine Archives
These are accessible at http://www.flightglobal.com/PDFArchive/

Robert
  Topic: Jumo 222 - Postwar Soviet Development?
rinkol

Replies: 5
Views: 10734

PostForum: DB, Junkers, Other German Engines   Posted: Fri Aug 24, 2007 16:41   Subject: Jumo 222 - Postwar Soviet Development?
The motivation for the increases in cylinder size would seem to be to squeeze out more power. The primary application, at least to start out with, was the Ju 288, and this in turn went though increase ...
  Topic: Jumo 222 - Postwar Soviet Development?
rinkol

Replies: 5
Views: 10734

PostForum: DB, Junkers, Other German Engines   Posted: Sun Aug 19, 2007 07:23   Subject: Jumo 222 - Postwar Soviet Development?
I noted with interest the recent article on the Jumo 222. I recall a report that the Soviets continued the development under a team of interned German personnel. However, AFAIK, there does not appear ...
  Topic: R-4360 and its intolerance of "abuse"
rinkol

Replies: 10
Views: 11615

PostForum: Pratt & Whitney Engines   Posted: Fri Aug 10, 2007 13:35   Subject: R-4360 and its intolerance of "abuse"
During the late 1930s, the permissible operating temperatures of liguid cooled engines were increased by two measures: the use of ethylene glycol based coolants, and the pressurization of the cooling ...
  Topic: Supercharger efficiency 100 srs Merlin vs G-series V-1710
rinkol

Replies: 1
Views: 3801

PostForum: Technical Discussion   Posted: Wed Aug 01, 2007 19:47   Subject: Supercharger efficiency 100 srs Merlin vs G-series V-1710
Not sure if this helps, but there is a paper by Lovesy, "Development of the Rolls-Royce Merlin from 1939 to 1945," that gives the following for the performance of the two stage supercharger ...
  Topic: Recent additions to NASA archives
rinkol

Replies: 3
Views: 4440

PostForum: Book, Mags, Films, Recordings, Reference   Posted: Sun Apr 01, 2007 15:53   Subject: Recent additions to NASA archives
Another interesting report is available at:

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930094473_1993094473.pdf

This is a translation of an Italian paper on their engines developed f ...
  Topic: Recent additions to NASA archives
rinkol

Replies: 3
Views: 4440

PostForum: Book, Mags, Films, Recordings, Reference   Posted: Fri Mar 02, 2007 19:54   Subject: Recent additions to NASA archives
I've noticed some papers of potential interest have been recently added to the NASA web site at http://ntrs.nasa.gov/search.jsp . Many of these are translations of German or other European reports.
...
  Topic: Use of Port Injection in DB 603
rinkol

Replies: 3
Views: 6813

PostForum: DB, Junkers, Other German Engines   Posted: Thu Mar 01, 2007 20:44   Subject: Use of Port Injection in DB 603
szielinski


Good questions. i was hoping someone could shed some light on this subject.

I think it was Heron who claimed that direct fuel injection had the drawback of not proving as much cooli ...
  Topic: Use of Port Injection in DB 603
rinkol

Replies: 3
Views: 6813

PostForum: DB, Junkers, Other German Engines   Posted: Sun Feb 25, 2007 09:47   Subject: Use of Port Injection in DB 603
The SAE paper SP-841 is an account written by Hans List of his life's work on engines. He states that during WWII "we succeeded in increasing the power of the DB603 engine by optimising the intak ...
  Topic: Early WW2 engines with two stage superchargers - DB 601C/D
rinkol

Replies: 6
Views: 8692

PostForum: DB, Junkers, Other German Engines   Posted: Tue Feb 20, 2007 19:47   Subject: Early WW2 engines with two stage superchargers - DB 601C/D
There is a curious photograph of a "twin supercharger prototype ... DB 601" at

http://www.warbirdsresourcegroup.org/LRG/db601.html

The layout resembles the later DB 628 and I was wonde ...
 
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