After reading https://www.g2mil.com/skyramp.htm, if we had an aircraft that I sketched out that has:
Total about 60 tons (56431 Kg) including:
1. engine mass
2. payload fraction (humans, seats, instruments)
3. fuel fraction
4. fuselage fraction
5. fuel tanks
6. cockpit fraction etc.
Is an idealized 600 kN engine sufficient to accelerate it into a parabolic flight for zero-g experience at some altitude?
Are 600 kN class thrust engines common (I tried finding engine thrust levels list, but can't find a handy one). let's assume we have some wings for flight control in that mass to be used mainly for short landing purposes. The "launch" will be from a rocket stand in inclined position- and ideally fuel will be carried on board.. A long duration flight is not necessary (in my paper sketch conops).
Regards.
BOACVC10