41 Votes (4.87 Average) and 5,435 Views  

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John Buckley
...after WWII my Father and I would go over to Brunswick Naval Air Station and park at the end of the East-West runway to watch these F4U Corsair fighters coming and going sometimes. The model we saw had a four bladed prop which I think may have been a result of the aircraft's experience in Korea.
Talbert ReesePhoto Uploader
There were models in the Pacific during WWII that had the 4 blade prop, nothing to do with Korea.
David Apps
Magnificent shot
an old timer once told me that the difference between the three and four bladed was one was called a persuit and the other a fighter. does any one know???
Champdriver
Ronald McCullough, only the U S Army used the P designation for pursuit up until 1947 when the U S Air Force was formed and changed to the F designation.

The Navy and Marines used a different system based on mission and manufacture.
So no, the 3 blade or 4 blade prop has no bearing on it being a P or an F.

All the Corsairs had 3 blades until the F4U-4 model which also had a chin scoop on the cowling.
jthyland
Sweet. Like a 1967 GTO.

P&W R2800, 2000hp, 18 Cyl. Twin Wasp.
skylab72
You really do not want to get into WWII USNAVY acft model designations. F (fighter) 4 (4th type from the manufacturer) U (manufacturer [Vought Aircraft]) dash number of the model within the type. The pic I think is a 2 or a 1. Thus F4U-1

The -4 got the extra blade to absorb more horsepower when they pumped up the ol'R2800 past 2000hp. 21?0 for the about the first 300 and 2450HP! for the rest of the -4s. Probably the first Navy fighter to launch with a throttle setting below fully open.
Dick Hendrickson
It's a FG-1D three blade prop.
Scott Hickman
IIRC, the FG-x models (Goodyear built) did not have folding wings and were land based aircraft.
Dave Canzano
3 bladed props manufactured by Hamilton Standard, 4 bladed props were Curtiss Electric.

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