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General Forums => Wishlist => Topic started by: frank3 on March 03, 2006, 07:44:03 AM

Title: Radiators for heavy bombers
Post by: frank3 on March 03, 2006, 07:44:03 AM
I was flying the B-17 today, and noticed it hadn't got any radiators.
At least, none appeared on the damage list.

Wouldn't it be nice to see destroyable radiators for each engine?
Title: Radiators for heavy bombers
Post by: Wmaker on March 03, 2006, 08:30:48 AM
Eh...

B-17 has Cyclone radials which are...like all radials...air cooled...
Title: Radiators for heavy bombers
Post by: frank3 on March 03, 2006, 08:31:56 AM
Oops you're right! Never knew much about engines :D

Now to find a way to erase this thread-o-shame...
Title: Radiators for heavy bombers
Post by: Airscrew on March 03, 2006, 01:59:56 PM
Quote
Originally posted by frank3
Now to find a way to erase this thread-o-shame...


too bad Frank,  it will be here for all to see for eternity,  mmmmuuuhhhhhaa:t
Title: Radiators for heavy bombers
Post by: Tails on March 03, 2006, 08:47:56 PM
Quote
Originally posted by Wmaker
Eh...

B-17 has Cyclone radials which are...like all radials...air cooled...


Cyclone engines are air cooled, yes. HOWEVER, not all radial recips are air-cooled.
Title: Radiators for heavy bombers
Post by: frank3 on March 04, 2006, 05:14:23 AM
Any examples?
Title: Radiators for heavy bombers
Post by: Lusche on March 04, 2006, 07:18:53 AM
I can remember two radial watercooled engines. One is the BMW 803, a 28 cylinder 4-row engine. Only a few prototypes were built before the end of war. And none was actually flying.
And I have seen once a russian 42 cylinder radial diesel engine for marine use, but i donīt know more about this engine.
Title: Radiators for heavy bombers
Post by: Tails on March 04, 2006, 10:44:59 AM
Quote
Originally posted by Lusche
I can remember two radial watercooled engines. One is the BMW 803, a 28 cylinder 4-row engine. Only a few prototypes were built before the end of war. And none was actually flying.
And I have seen once a russian 42 cylinder radial diesel engine for marine use, but i donīt know more about this engine.


The 803 was one I was thinking of. Another, who's name escapes me, was a multi-row developement of the R-3350 Duplex Cyclone used in the B-29's. Once you get to 4 rows in a radial, airflow becomes a problem for cooling, and any air that does get to the rear rows is already quite hot, and thus bad for cooling. Water then becomes the only really effective choice for cooling, without resorting to some wacky cowl designs anyways.

EDIT: Not the engine I was trying to remember, but a good example of a Gimongous (tm) water cooled radial is found here:
http://en.wikipedia.org/wiki/Lycoming_R-7755
Title: Radiators for heavy bombers
Post by: Wmaker on March 04, 2006, 10:48:41 AM
Quote
Originally posted by Tails
Cyclone engines are air cooled, yes. HOWEVER, not all radial recips are air-cooled.


recips? Sorry, my english fails me...

Ok, there might have been a few...just from an engineering POV what's the point making liquid cooled radial? Why double the drag that's needed for cooling?
Title: Radiators for heavy bombers
Post by: Wmaker on March 04, 2006, 10:49:58 AM
Quote
Originally posted by Tails
The 803 was one I was thinking of. Another, who's name escapes me, was a multi-row developement of the R-3350 Duplex Cyclone used in the B-29's. Once you get to 4 rows in a radial, airflow becomes a problem for cooling, and any air that does get to the rear rows is already quite hot, and thus bad for cooling. Water then becomes the only really effective choice for cooling, without resorting to some wacky cowl designs anyways.


Ok, that's one reason, yes...sorry...too wasted to read all the posts I guess. :) AFAIK B-29 had only two rows, B-50 is another matter of course...you weren't talking about it by any chance?

Here's R-3350: http://www.sternmotoren.at/Wright-R-3350-35A-Cyclone%5B2%5D.jpg
Title: Radiators for heavy bombers
Post by: Tails on March 04, 2006, 10:59:14 AM
Check my edit to see one good example of a big, water-cooled, radial.

Still trying to find the 4-row offshoot of the R-3350. I know I read SOMETHING about it, but that was back in 147 school.

As for the term 'recip', thats short for 'recipricating', as in a piston engine. I forget to not talk like a mechanic at times :D
Title: Radiators for heavy bombers
Post by: SMIDSY on March 04, 2006, 02:06:42 PM
also, not all bombers ingame have radials. the Ju-88 though it does appear to have radials, uses the same inline engines that can be found in the Fw-190D-9.



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