Talk:Townend ring

Ring adding 10 - 15 mph speed

The article doesn't specify at what speed this speed increase occurs so it's quite meaningless a statement. Quite how the tiny ring is supposed to develop 12 - 30% more thrust (which is what a 10 mph increase suggests over a range of air speeds) needs explaining. Increases in top speed are more than likely due to less power loss to drag than increased thrust due to more or less free expansion in an open, short metal ring which has no forward facing reaction surfaces on which engine-heated air could exert pressure. Waerloeg (talk) 13:36, 6 August 2014 (UTC)

The article does currently say it's a drag effect. GraemeLeggett (talk) 09:36, 8 August 2014 (UTC)

Your reply has very little to do with what I wrote. The article says:

It was also said to generate forward thrust from the expansion of the air as it passed over the engine, adding 10 to 15 mph to the aircraft's top speed.

That's the dubious part. Waerloeg (talk) 19:26, 8 August 2014 (UTC)

"It was also said..." is a phrasing that implies doubt about the claim. GraemeLeggett (talk) 18:55, 9 August 2014 (UTC)

External links modified (January 2018)

Hello fellow Wikipedians,

I have just modified one external link on Townend ring. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:

• Added {{dead link}} tag to http://patents.ic.gc.ca/cipo/cpd/en/patent/304755/summary.html
• Added archive https://web.archive.org/web/20070319035020/http://www.aeroplanemonthly.com/glossary/T_news_70050.html to http://www.aeroplanemonthly.com/glossary/T_news_70050.html

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 18 January 2022).

• If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
• If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—InternetArchiveBot (Report bug) 21:25, 25 January 2018 (UTC)