Inline vs radialMarch 11 2012 at 11:58 AM
|Chris Cowx (Login ccowx)|
from IP address 184.108.40.206
Response to Question about engines in WWII-era A/C
Basically, as has been said here, inlines are more delicate and heavier than radials. The flip side is that inlines are better aerodynamically.
The Japanese had three aircraft with inlines, the Tony, Judy and Seiran. Due to a lack of experience with inlines and lack of materials for making seals they did not do well operationally, though it is worth noting that both Tonys and Judys were outfitted with radials later on. A slightly slower plane in the air is better than a fast one in the shop!
In Europe, the very strong trend was to inlines. Longer experience with them and less over water flying I guess. The only radials were the Fw190 and some Russian aircraft such as Lavochkins.
The US Army Air Corps seems to have gone with almost exclusively inlines for fighters and radials for bombers. I am going to guess that lightness for bombers to allow more load and to give fighters more speed. Funnily enough, they did not want superchargers on their inlines which is why the P40 and P39 were sluggish at high altitudes.
The reasons for any particular engine being used is partly tradition in the service in question, availability and in some cases, performance!
Joking aside, you can make all the general rules you like and there are exceptions to all. The 190, Sturmovik, P47, La5/7, etc are all exceptions to conventional wisdom regarding engine choice. Yet all were extremely successful.
None of this gives you a definitive answer but I am sure you are getting that there are no hard and fast rules and that such decisions were made on a case by case basis, often not for purely aerodynamic reasons.
I hope that helps,
|This message has been edited by ccowx from IP address 220.127.116.11 on Mar 11, 2012 12:02 PM|
Posting or replying to messages on Plane Talking requires visitors to register:
- First you will need to register with Network 54, the Forum provider. Click here to register with Network 54. (If you already have a Network 54 Login you can go straight to the next step)
- Then, while signed in to Network 54, you can sign up for HyperScale's forums. Click here to sign up for HyperScale's forums.
Your user name and password will give you full posting privileges to all of HyperScale Forums.
Please note the following conditions of posting:
All contributions are welcome but please refrain from political or abusive comments, racially or religiously offensive remarks, swearing (including the thin disguising of swear words with asterisks and other characters), insulting language and crude metaphors. Please do not use Plane Talking as a public platform to complain about retailers or manufacturers (about issues such as broken or missing parts) before you have followed all normal channels to resolve any greivance. Plane Talking is not the place to conduct personal feuds or for posting personal attacks. Please do not post in capital letters only, as this is considered to be shouting and therefore impolite. Also, please do not post in 'texting message' word format. Any posts breaching these guidelines will promptly be removed from the server and the offender may be excluded from further posting to the HyperScale Forums. Off-topic posts may also be removed from the server.
In addition, Plane Talking is not a forum for the public criticism of the models that appear as Galleries or Articles. Please make any suggestions for improvements or criticism direct to the author via the email link at the bottom of the Article.
Finally, please note that this Discussion Group is privately operated and that I reserve the right to delete any post or cancel any registration for any reason whatsoever.