ok im studing the jets and there engine, if we combined SR 71 blackbird mach 3.3 top speed 4750 to 6570 with the X-43 ( worlds fastest jet ) mach 9.8 top speed 7000, togther wouldnt the 2 jets beable to travel faster then the speed of sound thus being able to travel through space??
You can travel through space with a gentle shove. And adding two jets will only get you to the stronger jet's top speed faster. Neither would be enhanced by the other. That's like thinking that since one person can run 15mph, two people side by side can run 30mph. Yes, they could pull a cart of bricks and accelerate better, but not any faster at top speed.