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This picture is from Boeing B-52. A Documentary History by Walter J Boyne. Schiffer.The text is:"Turboprops were seen as a possible powerplant for the B-29; unfortunately, the engines never materialized in time"...."in time" would mean before the end of WW2?Please anybody can give more information about this design?Thanks in advanceAntonioI think US turboprop studies started seriously by 1943 but but first pratical engine came just after the War, the XT-40.I only know two programs to replace the B-29 Wright R-3350 (2200 hp):a) XB-39 with Allison V-3420-11 (3000 hp) which was not purchased because improved performance was not enough to justify it.b) 1943: XB-44 with P&W R-4360-33 (3000 hp) was considered satisfactory to enter production as B-29D. First flight of XB-44 took place in May, 1945. When the first B-29D took the air in June, 1947 designation has changed to B-50A.
This picture is from Boeing B-52. A Documentary History by Walter J Boyne. Schiffer.
The text is:
"Turboprops were seen as a possible powerplant for the B-29; unfortunately, the engines never materialized in time".
..."in time" would mean before the end of WW2?
Please anybody can give more information about this design?
Thanks in advance
Antonio
I think US turboprop studies started seriously by 1943 but but first pratical engine came just after the War, the XT-40.
I only know two programs to replace the B-29 Wright R-3350 (2200 hp):
a) XB-39 with Allison V-3420-11 (3000 hp) which was not purchased because improved performance was not enough to justify it.
b) 1943: XB-44 with P&W R-4360-33 (3000 hp) was considered satisfactory to enter production as B-29D. First flight of XB-44 took place in May, 1945. When the first B-29D took the air in June, 1947 designation has changed to B-50A.
