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Shall we do a thread P-39 vs P-47?
You were using the wrong numbers. A few of the instructions do not apply, The P-39 had no WEP rating for 5 minutes at high altitude, the supercharger couldn't supply the boost needed to hit or even exceed military power at these altitudes. The P-47 wouldn't get WEP rating until it got water injection. So I used 20min at military power instead of 15min military and 5min WEP. The numbers are absolutely comparable.
As Tomo has explained, it won't go fast enough with the drop tank attached. One reason for the 210IAS requirement was so that the fighters were running closer to high speed if they had to respond to a group of incoming fighters. If you are running too slow in order to get good gas mileage you might as well not be there. It takes a bit of time to drop the tanks an accelerate from 310-315mph true to somewhere near 400mph even if the T-Bolt never got to top speed. If you are starting from 267-270mph when you drop the tank it takes that many seconds longer just to get up to the 310-315 the T-Bolts started with and then get to what speed the P-39 can manage. please note the P-47 has a much better power to weight ratio at 25,000 ft than the P-39 does. I have read a few of those tests and there is no 210IAS requirement. The tests used the actual speed of the test plane. The tank is dropped before combat and at that point altitude is more important than speed.
If you want the climb rate of the 87 gallon planes you have to take the range problems of the 87 gallon planes. You can't have it both ways. No way to know for sure, but that actual plane tested was a P-39K with the N engine/reduction gear/propeller. The K model all had 120gal internal. Not wanting it both ways, just don't compare the N and the Q. Q got heavier and the external guns created drag.
you want to play games with guns and ammo? I wonder How a P-47 does with only six guns and 200 round per gun?
Excellent work. Did you notice the climb numbers were substantially higher for the P-39N at all altitudes up to 8000meters (26400')?P-39N first entered service with free French in North Africa in April 1943.
P-47C first became operational with the 8th A.F. on 8 April 1943.
I do not have a complete test report on the "C" so for the following
performance comparisons I am using the earliest full test of an Operational
P-47 that I have been able to acquire thanks to www.wwiiaircraftperformanc.org
Quick reference using figures for P-47D-10 42-75035 and (P-39N 42-4400).
Altitude / Speed / Climb
Meters / MPH / FPM
SL.......333/2870 (344/3980)
1000..347/2850 (362/4145)
2000..357/2770 (381/4220)
3000..372/2690 (398/3940)
4000..383/2550 (394/3460)
5000..394/2400 (388/3060)
6000..404/2200 (382/2685)
7000..414/2000 (376/2230)
8000..423/1770 (367/1745)
9000..430/1420 (356/1310)
Range:
Internal fuel: 640 ml. (360 ml./87 gal. - 525 ml./120 gal.)
Max. External: 925-1250 ml. (1075 ml. with 120 gal. internal +175 gal. external)
Note: The P-39N and P-30Q-1 were constructed with the 87 gallon internal tank at
the factory. However there was a kit available to bring the capacity to 120 gallons
if desired. It should also be noted that the above performance of the P-39N would
suffer some with the added fuel.
Take-off weight: 13,234 (7,301) lb.
Minimum turn time: 22.6-26 (19.0) seconds to complete a 360 degree turn.
Maximum roll rate: 85 degrees/sec./250 mph. (75 degrees/sec./235 mph.)
Note: The numbers for roll rate are for P-47D-30 (P-39D-1)
True and agree, but that argument is mute when the Mustang has a catastrophic engine failure after taking flack, double the point if over a vast body of water.
This is a myth.
P38's loss of an engine would not survive any better.
The asymmetry of the remaining engine would flip over the aircraft.
A pilot would have to be lucky and have enough altitude to correct for this.
Another P38 Achilles Heal was combat damage to the rear Elevator.
This is a myth.
P38's loss of an engine would not survive any better.
The asymmetry of the remaining engine would flip over the aircraft.
A pilot would have to be lucky and have enough altitude to correct for this.
you want to play games with guns and ammo? I wonder How a P-47 does with only six guns and 200 round per gun?
This is a myth.
P38's loss of an engine would not survive any better.
The asymmetry of the remaining engine would flip over the aircraft.
A pilot would have to be lucky and have enough altitude to correct for this.
Another P38 Achilles Heal was combat damage to the rear Elevator.
This is a myth.
P38's loss of an engine would not survive any better.
The asymmetry of the remaining engine would flip over the aircraft.
A pilot would have to be lucky and have enough altitude to correct for this.
Another P38 Achilles Heal was combat damage to the rear Elevator.
This was back in the mid 80's and I saw Lefty Gardner shut down an engine at Reno and land safely in his P-38. I have no info on why he had to shut down the engine, but I witnessed this and he definitely did not flip over.
I don't know about the P-38 but not all WW2 twins had complete redundancy on engines, so only had generators/compressors on one.Any dual engined aircraft can fly on a single engine.
Engine Failure After TakeOff - Light Twin Engine Aircraft - SKYbrary Aviation Safety
I don't know about the P-38 but not all WW2 twins had complete redundancy on engines, so only had generators/compressors on one.
As per S/Rs post, they could fly on one engine but not both engines could be that one engine.You still could fly it on a single engine...
This is a myth.
P38's loss of an engine would not survive any better.
The asymmetry of the remaining engine would flip over the aircraft.
A pilot would have to be lucky and have enough altitude to correct for this.
Another P38 Achilles Heal was combat damage to the rear Elevator.
Early P-38s only had one set of accessories (pumps, generator, etc) later ones got two generators but I am not sure about a full duplicate set of pumps. I believe P-38s used electric propellers, having the battery go dead means some pretty tricky work to adjust the pitch on props and you better get it right the first time.
As per S/Rs post, they could fly on one engine but not both engines could be that one engine.