Simon Bridge said:
You also want to bear in mind that the counter-torque is also telling you the stress and strain the airframe has to cope with. Realistically reinforcing it would require (a) super-materials, or, (b) massively increasing the weight involved.
Increasing the weight, that can be done... no problem from his end. He's Silver-Age-Superman powerful. Most of the weight forward of the wings is in the nose, so the monocoque construction is sufficient already for that purpose. May need a few tweaks easily done.
He'd need heavy steel I-beams boxing in the sheet and running the length of the air-frame at least to stop the whole passenger section from breaking off by the cockpit door. Airframes are designed to be lifted from the wing attachments.That's a bad guess - and you need to quantify "too many g's": how many?
Yeah, the wing area has the most stress. Because of slower speeds at takeoff and landing, the lift stresses are at their max, and that’s why the wings are so large and why everything is suitably reinforced. No problem--they're gone in my scenario. Yes, some reinforcing by tubular beams may be warranted at various locations around the lift-seat, but heavy steel I-beams?
He not going to be doing any loop-de-loops, just flying like your average passenger hop, exactly what the Sabreliner was designed for, g-wise.
... he'd have to do something about power and amenities too.
Yep, though the ship does have batteries located near the aft chop-off end. Maybe a small diesel generator vented to the outside? To power the pressurization system and VHF Command radios--which BTW, are included. Might need some refurbishing
Any bright ideas on that front?
Why not just carry a railcar instead?
Practically anything will be better than the plane.
A railcar? At 600 mph? His lady friend and pals are aboard. He doesn't want to chance something that will break up in the lower atmosphere(which an un-pressurized car would have to fly) and turn them into chunky salsa. Don't see how that would work.
The CT-39 Sabreliner is pressurized, has a ceiling of 40,000 feet and speeds of around 600 mph. It's aerodynamic. Speaking of torque and counter-torque, it would be hellacious on a railcar moving at high subsonic speeds a mile up.
I chose the Sabreliner for several reasons. They built 800 of them for one. They're older, 1950s era aircraft; at the time of my story, ca 1990, there were dozens sitting in outside storage in the facility near Tucson, Arizona. Ideal to swipe, er, borrow with no one the wiser. As of 2012, almost all are gone, but their database says what happened to them is "unknown"!
Or maybe a Lear 23. Some of them are scattered around the globe in boneyards. I first toyed with the
T-33 training jet. They build 6500 of them, somewhere there's one which could be borrowed with little fuss, and they're built for those types of speed. But only a couple seats...
Hmm. Pressurization would be ideal. The guy could use the same frame to carry passengers into orbit. It would be most handy if it could be used for transport throughout the solar system. Although it would probably be asking too much

; a custom spaceship would be best.
But hey - it's your story - it's fiction too: you can ignore as much of physics and engineering as you like. Maybe he also has the power to blow really big soap-bubbles and reinforce them with a thought and carry people like that?
See above--the concept of a superhero is insane enough. My protag is like Supes, but the basics are it. No super-ventriloquism, X-ray vision, etc, just the standard flying brick FISS. He's the only super around, and naturally is looked upon a a freak. Many are suspicious of him, and I can't blame them. A young man barely out of high school with mind-boggling capabilities.
You don't want to get me going on that later section of the book, where he hires on with the DOD, doing inserts and extracts of spec-ops teams, with flight parameters of Mach 5+

.