Heya's
Just trying to take my place in AH as one of the all time whiners.
Anyway I've been doing some testing on the loaded F4U-1D fully loaded takeoff characteristics.
First test.
Auto take off land base no wind full fuel 2K Bombs 8 rockets. Gross weight 15,000LBS.
Observed takeoff runs for speed and distance.
Each notch off flap caused a longer takeoff run proving that the flaps do create drag. This is correct No problem.
The reason Auto take off causes a longer run is because it lifts off at approx the same speed in the F4U which is 120MPH give or take a few MPH. Viewed on external film viewer for exact speed.
Second test.
Same load manual takeoff. It is possible to achieve a much shorter take off run with full flaps.
90MPH appears to be the critical liftoff speed for the F4U-1D fully loaded with full flap.
Third Test.
Move to carrier.
In ten tries I was unable to reach my minimum critical speed by the end of runway for takeoff. Failed each time.
My conclusion based on this was that since the takeoff run for the F4U at 14,415LBS in a 30knot wind should be 509FT then maybe the Carrier deck is just to small for the F4U since HT said the spawn point is exactly 556FT from the end of the deck and the carrier is moving at 35MPH exactly. Granted I am used WEP also which is more power than the F4U would really have so with the extra weight 556FT is about the right distance for a Fully loaded F4U. So based on that alone I would say that the F4U should be able to make it off the deck in Mil power without to much difficutly albeit not much room to spare with manual takeoff.
These points are off.
1. I should not need WEP.
2. The run from the manual is with 30% flap not 100%.
3. a 14,300Lbs bird can do it in 509FT in 30Knots34.5MPH with 30% flap then a 15,000LBS should be able to make it in a 35MPH wind in 556FT with full flaps fairly consistantly from the flight manual which is a rather reliable piece of test data I think.
Here is the Killer.Fourth test.
Grab a P-47D30 100% fuel 2K Eggs and 10 Rockets this is about an 18,000LBS A/C
Manual takeoff full flap, WEP whoosh!! right off the deck!!From the pilots manual
The P-47D has a takeoff run at 15,000LBS of 1200FT. More than twice the run of an F4U-1D at 15,000LBS not 18,000lbs which the test A/C would have weight. WTF??
Next the P-38L full load full flaps full fuel 2K eggs 10 rockets.
Approximately a 21,500LBS A/C.
From the manual again
21,400LBS takeoff run 30Knot headwind 34MPH. takeoff run 930FT (300+ft longer than the F4U-1D with equal load)
Auto takeoff hands off!! full flap WEP. Whoosh.
Not even close. Off the deck before the end.
The P-51D failed would not takeoff with a full load.
The Mossie with full bombs rockets fuel made it first try.
The A-20 not only made it off with Rockets and bombs and fuel but made it easily. This A/C out accelerates the F4U-1 like it is standing still. Even with full flaps it made it to 100MPH + by the end of the deck. The F4U could not reach 90MPH!!!.
The F4U was pupose built for short takeoff runs. I keep saying the accleration is porked maybe this will stir some interest. An A-20 with bombs should not out accelerate an F4U-1D off of a carrier deck!!Here is the F4U data.

P-47D data
