Any anti-icing system on USAAF twin-engined bombers?

[KRK4m]

You might think I'm fooling myself, but it wasn't until today (after 50 years of interest in aviation and modeling), that I discovered that the three basic World War II American light and medium bombers (A-20, B-25 and B-26) most likely have no anti-icing installation whatsoever on the wings. I know that high-altitude flying heavy bombers (B-17, B-24 and B-29) and airliner-derived designs (C-47, A-29) have black rubber boots integrated with the wing leading edge. PBY and British Blenheim are similar. And here what's going on?

Was it assumed that a twin-engine bomber would never have to get through the clouds of a stormy weather front? Shed some light on this at least, please.

Cheers

Michael

 

PS. Although Wikipedia mentions the anti-icing installation as the basic change introduced in the B-25C, but the B-25H/J cutaways by Mike Badrocke/Aviagraphica are completely silent on this subject

Edited September 10, 2022 by KRK4m

[dov]

You may stretch the question to RAF early  twins too.

Blenheim, Anson, Whittley, Hampdon..

I worked on these subject a decade ago. I came across of de-icing paste.

But devenitly  the ops under icing condition I remember on late Wellington from Italy after 1943.

Happy modelling 

[Black Knight]

Aircraft such as the Lockheed Hudson used the pulsating rubber boot on the wings and tail fins

[Junchan]

Both the B-25 and B-26 have the De-Icing system as illustrated in the manuals, but the A-20 didn't.

https://rara.jp/image_view/2fa79dffb88b86ae02e8836fd5119673/1005596944

https://rara.jp/image_view/0433e840fd02abb485c00d295af04de5/1005596945

 

Jun in Tokyo

https://www.flickr.com/photos/horaburo/albums

[brewerjerry]

Hi

    did they use something like tbe raf a/c,

    a yellow paint type substance called i think kilfrost ?

maybe there was an american made version ?

    cheers

       jerry 

Edited September 14, 2022 by brewerjerry

[Lusitanian]

To be specific:

 

Anti-ice systems prevent ice from accumulating.  Most often this system heats the leading edge of the flying surfaces.

 

De-ice systems remove accumulation of ice already present.  Most often this system consists of rubber ‘boots’ which inflate slightly with air to physically remove the ice.

 

Anti-ice systems were not generally in use in WWII era. Most large American aircraft had (from their factory) rubber ‘boot’ de-ice systems fitted.  They were often removed by squadrons because they require some maintenance and were not considered essential.  

 

Best wishes!

 

 

Edited September 14, 2022 by Lusitanian