Plenty of air to breathe for the first 100,000 feet. One of the great inefficiencies of traditional staged-rocket to orbit is the need to drag a lot of heavy oxidiser through the atmosphere.
Can it just soar into orbit from 100,000 feet if it has enough inertia from the powered phase of the flight?
Interesting. Thanks for the info. Love stuff like that, but have little real knowledge of it.
Gotta remember to make a reservation at a Holiday Inn Express. I’ve got several areas of expertise that need honing.