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Just to be clear what combat configuration are we talking about for the P-51?
- Short/Medium Range: No drop-tanks, fuel only in the wings. Percentage of available fuel is lower than any other configuration, weight is lowest
I thought the P-47 didn't have turning ability that was all that remarkable? From what I remember the Silverplate B-29's could turn inside a P-47 (they had 7200 pounds reduced over a regular B-29, sure...)
This is at least one source for the turning circle thing... Wendover's Atomic Secret | Military Aviation | Air & Space MagazineThink you could come up with source for that???????
60-degrees of bank correlates to 2g...Please remember that at 30,000ft the air is about 37% as dense as it is at sea level so even level fight stall speeds are higher than sea level. Now try banking at over 60 degrees (really like to see B-29 doing over a 60% degree bank at 30,000ft) and pulling 4 or more "G"s.
Does it? How does that work?60-degrees of bank correlates to 2g...
This is at least one source for the turning circle thing... Wendover's Atomic Secret | Military Aviation | Air & Space Magazine
(then) Colonel Tibbets had claimed the plane's weight was 7200 pounds lighter than a traditional B-29: Weight figures seemed based around the Silverplate carrying around a 10,000 pound bomb (Fat Man: 10300; Littleboy: 8900).
60-degrees of bank correlates to 2g...
As would I...I would certainly like to see something a bit more detailed than that.
Is this with the center tank loaded?You do realize that P-47D-25 had a wing loading of about 48lbs per square ft when FULLY loaded clean( 370 gallons of fuel, extra oil, 425 rounds per gun).
I figured one would assume the followingWhile a B-29 even with 7000lbs stripped out of it is going to weigh 64,500lbs empty. Standard empty weight is 71,500lbs for the early ones. Wing loading is 37.2lbs except you have no crew, no oil, no guns even in the tail, no oxygen and maybe not even radios. Basic weight of a standard B-29 was 74,050 lbs so 7000lbs from that is 67,000lbs or wing loading of 38.9lbs/sq/ft. Now if we add just 17,000lbs of fuel (2840 gallons out of the the max internal 6803 gallons not including bombbay tanks) we get a plane weight of 84,000lbs and a wing loading of.....................48.8lbs/sq/ft. Please note there are no bombs on board. Also note the P-47 will be hundreds of pounds lighter by the time it climbs to 34,000ft.
Just search for level-flight g-load bank angleDoes it?
In level flight, in a balanced turn the G loading is the the reciprocal of the cosine of the bank angle (or the secant, if you prefer).Does it? How does that work?
As would I...
Is this with the center tank loaded?
I figured one would assume the following
The figures were most likely on the inbound flight as Tibbets said if he encountered a fighter, he figured he could just outmaneuver him
- B-29 with fuel load used for a high altitude flight to Hiroshima & Nagasaki with the specified crew, and 8,900 to 10,300 pound payload, minus 7200 pounds due to the removal of turrets, guns, and ammunition
- Fuel status of P-47 would be either shortly after reaching altitude and/or normal combat weight with with or without the center tank filled.
I thought the P-47's had tanks in the wings, then as time went on a ferry tank was replaced with a drop tank, then wing & centerline drop-tanksWhat center tank?
65 more gallons regardless of tank configuration sounds okay enoughThe weight given was for the internal tanks, which on a late model P-47 was enlarged to hold 370 gallons instead of the 305 gallons of the early version
But with 7200 pounds of turrets, guns, ammo, and other stuff removed would be down to 94050, and takeoff would be 132800 lbsI would note that the "combat" weight of a normal B-29 was given as 101,250lbs at which point the plane had a load factor of 3.10. 'Combat' weight is after a fair amount of fuel is burned off and bombs dropped. For instance a plane that took off at 140,000lbs with 10,000lbs of bombs and 47,196lbs of fuel has a "combat" weight of 101,250lbs.
I don't know, I'm just going on what I was told..The Silverplate aircraft will be a little lighter but enough to really out maneuver a P-47?
I never had the formula before, but I really like it... I can actually do the computations on my own...g = 1 /cosine (bank angle).
I thought the P-47's had tanks in the wings, then as time went on a ferry tank was replaced with a drop tank, then wing & centerline drop-tanks
Nope - started off with zero external fuel capability and no internal fuel in wings, 305 gallons in Main+Auxilliary in fuselage fwd and under cockpit, then C/L rack, then wing pylons for combat tanks, then increase fuselage fuel, then internal wing tanks for P-47N.
65 more gallons regardless of tank configuration sounds okay enough
It was 'barely OK' and too late to participate in Long Range Escort in ETO.
But with 7200 pounds of turrets, guns, ammo, and other stuff removed would be down to 94050, and takeoff would be 132800 lbs
I don't know, I'm just going on what I was told..
I never had the formula before, but I really like it... I can actually do the computations on my own...
...then internal wing tanks for P-47D.
I know Tomo - just a typo. It was an entirely new wing.Bill - internal wing tanks were installed on the P-47N only.
I know Tomo - just a typo. It was an entirely new wing.
Okay, I know what I'm looking at, the rear tank of the two was the one I thought was the 'center tank'.[/quote]305 gallons in Main+Auxilliary in fuselage fwd and under cockpit