Salute!
Hope the pressure oxy system doesn't become an excuse for some future accidents, The new systens for the F-22 and F-35 seem to be overkill to this old fart.
Ask about A-4 and F-101B and F-106 and other jets.. We had constant pressure with the nose hose, and no big deal. The planes were supposed to fly way high, and pressure suits were on the kit,. Tink the F-104 was same, and maybe the Lightning.
Only thing my bride and I suffered was the delay ear block and we soon learned to val salva in our sleep!
I only ran into the pressure breathing is another plane besides the VooDoo, and it was the A-37. It had the diluter-demand regulator like the trainer. We routinely came home at 25K on one engine and the system had positive pressure from about 22k on up. If we went up to 30k for optimum single engine cruise, the pressure was very constant and no big deal.
Gums sends...