Perhaps an interesting coincidence but today I watched a documentary about the development of the YF-23. The max speed of the MMU is given as mach 1.8, the same number as the YF-23, at least officially. It went much faster than that. I believe the same is for the MMU when it gets the right engines.
I see some similarities of the MMU with the YF-23 and Su-57.
			
			I see some similarities of the MMU with the YF-23 and Su-57.
			
				Last edited: 
			
		
	
								
								
									
	
								
							
							 
				 
 
		 
 
		