So I know its been asked around before, I ran a search but I have a more specific question. The secondary engines of the VF-4, I know there are no official stats on them; however i am trying to get a ball park of what the true thrust of a VF-4 with all engines burning. I reason its some kind of plasma rocket. In order to impart the VF-4 with a competitive thrust to weight ratio with a standard load you would only need a rocket that pumps out a little over a third the power of the of the rockets they slapped on the back of the VF-1.
Basically each of those behemoths in a fast pack pump out 120,000 kg of thrust but they have to compensate for all the extra weight so they pull a 6:1ish ratio out of the thing. So I figured if competitive is meeting or slightly exceeding the VF-1 w/FAST pack, then that thrust to weight ratio is what i needed to ball park it from. So using Mr.Marches benchmark for take off weight I figure the VF-4 comes in at around 20 mt, well that if my math is right requires 120,000 kg of thrust to get 6:1. The turbines on a VF-4 pump out a total of 28,000 kg, so that means you only need to add 92,000 kg or rather 46,000 kg for each. I'd make it 50,000 just to it could out pace a VF-1S.
So I ask is this a fair assumption as long as I don't quote it as official?