Tom,
The big difference between the XP-72 and the XP47H was weight.
The "H" was basically a P-47B with the nose severed at the firewall and rebuilt to house the Chrysler V-16. So the aircraft was quite heavy at gross weight over 14,000 lbs.
The XP-72 was built to be light weight, more streamlined, and run two props. Performance testing was done with the single prop as the counter-rotating prop setup was not ready at the time of flight testing.
Added to the mix of testing, the GE turbo-supercharger was not yet fully functional at the time of testing either the 72, 47J, or the 47H as I understand it.
The big difference between the XP-72 and the XP47H was weight.
The "H" was basically a P-47B with the nose severed at the firewall and rebuilt to house the Chrysler V-16. So the aircraft was quite heavy at gross weight over 14,000 lbs.
The XP-72 was built to be light weight, more streamlined, and run two props. Performance testing was done with the single prop as the counter-rotating prop setup was not ready at the time of flight testing.
Added to the mix of testing, the GE turbo-supercharger was not yet fully functional at the time of testing either the 72, 47J, or the 47H as I understand it.
Now that's impressive for what the plane had at the time. None the less, I get white knuckles sitting here just thinking about the "H" and the "J" for FS.
Hopefully you will enjoy the oncoming Harpoon and Lodestar family of aircraft coming in the June-July time frame.