Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Townend(sp?) Engine Cowling  
User currently offlineLZ-TLT From Germany, joined Apr 2001, 431 posts, RR: 0
Posted (12 years 4 months 1 week 9 hours ago) and read 1929 times:

Doing some research on 20's and 30's aircraft I noticed a variety of aircraft with radial engines being fitted with the so-called Townend(or Townsend) engine cowling. Could somebody explain what the reason and the benefits of using such a cowling were?

5 replies: All unread, jump to last
 
User currently offlineL-188 From United States of America, joined Jul 1999, 29832 posts, RR: 58
Reply 1, posted (12 years 4 months 1 week 9 hours ago) and read 1903 times:

Wasn't that the equivlent to the NACA cowling?

Just shooting from the hip here folks.



OBAMA-WORST PRESIDENT EVER....Even SKOORB would be better.
User currently offlineFBU 4EVER! From Norway, joined Jan 2001, 998 posts, RR: 7
Reply 2, posted (12 years 4 months 1 week 6 hours ago) and read 1849 times:

The Townend Ring was a British design that appeared just after the First World War and was extensively used on British A/c until the early -30's.I'm not sure but I think NACA developed this design into the NACA Cowling which had a somewhat longer chord and better airflow characteristics on the inside to aid cylinder cooling.


"Luck and superstition wins all the time"!
User currently offlineLZ-TLT From Germany, joined Apr 2001, 431 posts, RR: 0
Reply 3, posted (12 years 4 months 1 week 6 hours ago) and read 1830 times:

FBU 4EVER,

So the benefits of the Townend Ring were better airflow for engine cooling?


User currently offlineLapa_saab340 From Spain, joined Aug 2001, 390 posts, RR: 4
Reply 4, posted (12 years 4 months 5 days 23 hours ago) and read 1730 times:

The Junkers Ju-52 is a good example with both Townend and NACA cowlings (Center engine had the Townend ring, and the two wing engines the NACA cowls)

Cheers


User currently offlineFBU 4EVER! From Norway, joined Jan 2001, 998 posts, RR: 7
Reply 5, posted (12 years 4 months 4 days 22 hours ago) and read 1707 times:

Yes,LZ-TLT,the result was better cooling.By tapering the aft opening,the air that was heated and expanded around the engine had to accellerate through the cowling,thus increasing cooling efficiency.
The P-51 Mustang received a 15 mph speed increase by the radiator cooling air.Sort of jet effect,really.Whether this was the case with Townend/NACA cowlings too,I don't know.



"Luck and superstition wins all the time"!
Top Of Page
Forum Index

Reply To This Topic Townend(sp?) Engine Cowling
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
Engine Cowling Sizes? posted Thu May 19 2005 14:32:59 by JumboJim747
A320 Engine Cowling Question posted Fri May 2 2003 06:23:05 by UALPHLCS
UA 744 W/ Large Hole In Engine Nacelle/Cowling... posted Sun Mar 7 2004 06:17:08 by USAFHummer
Single Engine Airliners Of The Future? posted Wed Nov 29 2006 15:59:29 by DHHornet
Engine In Tri-jets. posted Tue Nov 28 2006 00:52:14 by AerLingus747
737 Shutting Down Engine Before Stopping posted Mon Nov 27 2006 20:48:18 by Coolpilot
Engine Panels Open? posted Mon Nov 27 2006 02:25:27 by Dmanmtl
Engine Removal: Ballast Needed? posted Sat Nov 25 2006 03:41:00 by Bobster2
Starting A Multi Engine Seaplane posted Fri Nov 17 2006 00:17:07 by ElpinDAB
747 SP A Waste? posted Mon Nov 13 2006 18:34:58 by AirForceOne

Sponsor Message:
Printer friendly format